• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention is to provide a gas insulated switchgear that can reduce the installation area while keeping the installation height low, the present invention is to connect between the main pair of opposingly arranged main bus and at the same time orthogonal to the main bus The busbar communication line arranged between busbars is composed of three parallel connection of three breaker units of horizontal installation along the main busbar, and each of the main busbars extends vertically from the end of the busbar communication line. It consists of three busbar units in parallel.
    公开号:KR20020088059A
    申请号:KR1020027003086
    申请日:2000-03-31
    公开日:2002-11-25
    发明作者:와타나베히로야스；헨미레이；시노하라료이치；미츠기료이치；이토순지
    申请人:가부시끼가이샤 히다치 세이사꾸쇼；
    IPC主号:
    专利说明:

    Gas Insulated Switchgear {GAS INSULATED SWITCHGEAR}
    [2] As a conventional gas insulation switchgear, what is described, for example in Unexamined-Japanese-Patent No. 3-39310 is known. The gas insulated switchgear described in the above publication is a 1 + 1/2 breaker type arranged between main buses so that bus bar connection lines connecting main buses arranged in parallel to each other are orthogonal to the main buses, and constitute a main bus. The three-phase busbar unit is arranged almost horizontally outward from the end of the busbar communication line. Therefore, the installation area of the gas insulation switchgear in an electric plant becomes large.
    [3] In order to reduce the installation area of the gas insulated switchgear, as described in, for example, Japanese Unexamined Patent Application Publication No. 8-47125, the circuit breaker unit constituting the busbar communication line has a vertical installation from a horizontal installation. I think. However, in the above thinking method, since the installation height of the gas insulated switchgear increases, the earthquake resistance falls. In addition, installation in indoor substations or underground substations with limited heights may be difficult.
    [1] The present invention relates to a gas insulated switchgear installed in an electric station such as a substation or switchgear.
    [14] 1 is a plan view showing the arrangement of a gas insulated switchgear according to the first embodiment of the present invention;
    [15] 2 is a plan view during the II-II arrow of FIG.
    [16] 3 is a plan view of the arrow III-III of FIG.
    [17] 4 is a plan view at the time of the IV-IV arrow of FIG.
    [18] 5 is a unit diagram showing a circuit configuration of the gas insulated switchgear of FIG. 1;
    [19] 6 is a plan view showing the arrangement of a gas insulated switchgear according to the second embodiment of the present invention;
    [20] 7 is a plan view taken by the Vll-VII arrow of FIG.
    [21] FIG. 8 is a plan view illustrating the VllI-VI1I arrow in FIG. 6.
    [4] A representative object of the present invention is to reduce the installation area while keeping the installation height of the gas insulated switchgear low.
    [5] The basic feature of the present invention is that the bus bar connection lines arranged between the main bus bar so as to be connected to the pair of main bus bar arranged opposite to each other and orthogonal to the main bus bar connect the three breaker units of the horizontal installation in series, It consists of three phases parallel to a main bus bar, and each of a main bus bar is comprised by three phases parallel to a bus unit along the part which was erected from the edge part of a bus bar connection line.
    [6] In the present invention, the end of the bus bar communication line refers to the main bus side end of the breaker unit of the breaker unit located at both ends of the bus bar communication line. More specifically, it means the main busbar side end of the sealed container peripheral wall constituting the blocking portion. In addition, the breaker unit of horizontal installation means that the sealed container which comprises the breaker part of a breaker unit is installed horizontally, ie, the center axis of the sealed container is horizontal with respect to the ground, and the electrical contact accommodated in the sealed container is opened horizontally. Point.
    [7] The part standing up from the edge part of a bus bar connection line is comprised by the bus bar connection unit, and is connected to the main bus side side end part of the circumferential wall of the sealed container which comprises the break part of a breaker unit. The bus bar unit constituting the main bus bar is disposed on either of the main bus bar opposing side or the main bus bar opposing side of the bus bar connecting unit. There may be multiple busbars along the main busbar.
    [8] According to the present invention, since the busbar connecting line is formed by the breaker unit in the horizontal installation, the installation height of the gas insulated switchgear can be reduced to a low level. In addition, since the busbar unit is provided along the upright portion of the busbar contact line, the dimension of the main bus bar facing direction of the gas insulated switchgear can be shortened, and the installation area of the gas insulated switchgear can be reduced.
    [9] The connection between adjacent breaker units is made upright from the end of the breaker unit. That is, it is connected by the circuit breaker connection unit which consists of two upright parts which stood up from the edge part of the adjacent breaker unit, and the horizontal part which connects between upright parts. Here, the end of the breaker unit refers to the end of the circumferential wall of the sealed container constituting the breaker of the breaker unit. In addition, between adjoining interruption | blocking units refers between the adjoining circuit breaker units in the direction where 3 circuit breaker units were connected in series.
    [10] According to the present invention, since the connection between adjacent breaker units is made upright from the end of the breaker unit, that is, by the breaker connection unit constituted by the upright portion and the horizontal portion, the dimensions between adjacent breaker units This can shorten the installation area of the gas insulated switchgear.
    [11] A line lead-out line is connected between adjacent breaker units, that is, a breaker connection unit, and is drawn out in the vertical direction. One line lead-out line is connected to one circuit breaker connection unit, but two line lead-out lines may be connected. In other words, the line drawing line is composed of the main line and the reserve line. In such a case, in the present invention, one of the two line drawing lines drawn out in the vertical direction is drawn horizontally to the side of the other side of the line drawing line. Alternatively, one of the two line lead-out lines is drawn out horizontally between each phase of the busbar communication line, for example, between the first phase and the second phase, and one of the two line lead-out lines 35 of the first phase. Between the 2nd phase and 3rd phase, one of the two track lead-out lines of a 2nd phase and a 3rd phase is taken out horizontally. As a method of drawing one line drawing line to the side of the other line drawing line, the drawing is made obliquely along the main bus line, the drawing is made parallel to the main bus line, and then drawn in the opposite direction of the main bus line There is a way).
    [12] According to the present invention, when two line lead-out lines are simultaneously drawn out between adjacent breaker units, that is, from a circuit breaker connection unit, one of the two line lead-out lines drawn in the vertical direction is horizontally sideways to the other side of the line lead-out line. Since the wires are pulled out horizontally between each phase of the drawing or busbar communication line, two line lead-out lines can be taken out simultaneously between adjacent breaker units without increasing the size between adjacent breaker units. Therefore, the dimension of the bus bar opposing direction of a gas insulation switchgear does not become large.
    [13] In addition, a transformer unit is connected between adjacent breaker units, that is, an upright portion of the breaker connection unit. In the present invention, the transformer unit is arranged in a space sandwiched by the upright portions of both ends of the circumferential wall of the sealed container constituting the breaker of the breaker unit so that the height of the gas insulation switchgear is not increased by the transformer unit.
    [22] (Example 1)
    [23] A first embodiment of the present invention will be described with reference to Figs. 5 shows a circuit configuration of the gas insulated switchgear of this embodiment. The gas insulated switchgear of this embodiment is of a 1 + 1/2 breaker type. The main buses 1 and 2 constituting the double bus bar are connected by bus bar communication lines 3a to 3c. The busbar communication lines 3a to 3c are constituted by the unit lines 4a to 4c connected in series.
    [24] The unit circuit 4a is a circuit breaker 5a, a current transformer 6a connected to one side of the circuit breaker 5a, a disconnector 8a, a ground breaker 9a, and a current transformer connected to the other side of the circuit breaker 5a. 7a, the disconnecting device 10a, and the grounding switch 11a. The unit circuit 4b is a circuit breaker 5b, a current transformer 6b connected to one side of the circuit breaker 5b, a disconnector 8b, a ground switch 9b, and a current transformer connected to the other side of the circuit breaker 5b. 7b, the disconnecting device 10b, and the grounding switch 11b. The unit circuit 4c is a circuit breaker 5c, a current transformer 6c connected to one side of the circuit breaker 5c, a disconnector 8c, a ground breaker 9c, and a current transformer connected to the other side of the circuit breaker 5c. 7c, the disconnecting device 10c, and the grounding switch 11c.
    [25] The line lead-out line 12 and the transformer 15 are connected between the unit lines 4a and 4b. The line lead-out line 13 and the transformer 16 are connected between the unit lines 4b and 4c. The line lead-out line 14 is again connected between the unit lines 4b and 4c of the bus bar communication line 3b. The line lead-out lines 13 and 14 connected between the unit lines 4b and 4c constituting the busbar linking line 3b constitute a main line and a preliminary line.
    [26] The line lead-out line 12 is constituted by a circuit breaker 17a, a ground switch 18a, a current transformer 19a, and a cable head 20a. The line lead-out line 13 is composed of a disconnector 17b, a ground switch 18b, a current transformer 19b and a cable head 20b. The line lead-out line 14 is constituted by a disconnector 17c, a ground switch 18c, a current transformer 19c, and a cable head 20c.
    [27] The main bus line 1 is connected to the power receiving line 21a and the bus bar division line 29a. The power receiving circuit 21a is a circuit breaker 22a and a current transformer 23a connected to one side of the circuit breaker 22a, a disconnector 25a, a ground breaker 26a and a current transformer connected to the other side of the circuit breaker 22a. 24a, the disconnecting device 27a, and the grounding switch 28a. The busbar division line 29a includes a circuit breaker 30a, a current transformer 31a connected to one side of the circuit breaker 30a, a disconnector 33a, a ground switch 34a, a ground switch 37a, a transformer 38a, And a current transformer 32a, a disconnector 35a, and a ground switch 36a connected to the other side of the breaker 30a.
    [28] The main bus line 2 is connected to the power receiving line 21b and the bus bar division line 29b. The power receiving circuit 21b is a circuit breaker 22b, a current transformer 23b connected to one side of the circuit breaker 22b, a disconnector 25b, a ground breaker 26b, and a current transformer connected to the other side of the circuit breaker 22b. 24b, the disconnecting device 27b, and the grounding switch 28b. The busbar division line 29b includes a circuit breaker 30b, a current transformer 31b, a disconnector 33b, a ground breaker 34b, a ground breaker 37b, a transformer 38b, connected to one side of the breaker 30b. And a current transformer 32b, a disconnector 35b, and a ground switch 36b connected to the other side of the breaker 30b.
    [29] The electric power supplied from the upstream power system or the adjacent gas insulated switchgear is received by the power receiving circuits 21a and 21b, and is transmitted to the busbar communication lines 3a to 3c via the main bus lines 1 and 2, It is supplied to the downstream power system via the line lead-out lines 12a to 12c. The main buses 1 and 2 are also supplied to the bus division circuits 29a and 29b and supplied to the adjacent gas insulated switchgear.
    [30] 1 to 4 show the arrangement of the actual gas insulated switchgear applying the circuit configuration of FIG. The gas insulated switchgear of this embodiment is installed in an indoor substation, and is configured to draw electric power to a downstream power system. The indoor substation is divided into a ground part and an underground part. In the ground part, main equipment constituting the gas insulated switchgear is disposed, and in the underground part, a cable part for drawing power to the downstream power system is disposed. .
    [31] The main buses 1 and 2 are arranged in parallel to each other. The busbar communication lines 3a to 3c connecting the main buses 1 and 2 are disposed between the main buses 1 and 2 so as to be orthogonal to the main buses 1 and 2, and the main buses 1 and 2 are connected to each other. It is parallel to 2). The busbar communication lines 3a to 3c are constituted by single-phase circuits 50a to 50c arranged parallel to the main bus lines 1 and 2. The single phase lines 50a to 50c are constituted by the breaker units 51a to 51c.
    [32] The breaker units 51a and 51b are connected via the breaker connection unit 52a, and the breaker units 51b and 51c are connected via the breaker connection unit 52b. That is, the breaker units 51a to 51c are connected in series via the breaker connection units 52a and 52b. The breaker unit 52a is a breaker 5a, and is comprised by the breaker 53a and the manipulator 54a. The breaker unit 52b is a breaker 5b and is comprised by the breaker 53b and the manipulator 54a. The breaker unit 52c is a breaker 5c and is comprised by the breaker 53c and the manipulator 54c.
    [33] The blocking parts 53a to 53c store electrical contacts in a cylindrical tank filled with SF 6 (sulfur hexafluoride) gas, which is an insulating medium. This electrical contact is mechanically connected to the corresponding manipulators 54a to 54c via a link mechanism, and is opened and operated in the horizontal direction by the corresponding manipulators 54a to 54c. Manipulators 54a to 54c are disposed below the left end of the corresponding blocking portions 53a to 53c. Each of the cylindrical tanks of the blocking portions 53a to 53c is a hermetically sealed container made of metal, and a horizontal container whose horizontal axis is horizontal to the ground. Moreover, each tank of the interruption | blocking part 53a-53c is arrange | positioned on the same plane so that the center axis | shaft may be connected in a straight line. In this embodiment, the height of the breaker unit is kept low by the horizontally mounted tank. In addition, the tank described after this is a metal sealed container similarly to the tank mentioned above, and is grounded and SF 6 gas is enclosed in it.
    [34] The breaker connection units 52a and 52b are lifted upright from adjacent breaker units and connect between adjacent breaker units. The circuit breaker connection unit 52a is comprised by the upright parts 55a and 56a which comprise an upright part, and the horizontal part 57a which connects the upright parts 55a and 56a in the same height. The circuit breaker connection unit 52b is comprised by the upright part 55b, 56b which comprises an upright part, and the horizontal part 57b which connects the upright part 55b, 56b in the same height.
    [35] The upright part 55a is comprised by the cross-shaped branch tank in which the disconnecting device 10a and the grounding switch 11a were accommodated, and the opposite side to the main busbar 1a side of the tank circumference wall of the breaking part 53a. It is provided to the end via the current transformer unit 59. The current transformer unit 59 houses the current transformer 7a in a cylindrical tank. The transformer unit 64 is connected to the main bus line 1a side of the upright part 55a. The transformer unit 64 houses the transformer 15 in a cylindrical tank and is disposed in a space fitted by the upright portion 55a and the bus bar connection units 66a to 66c described later. The upright part 56a is comprised by the T branch type tank in which the disconnector 8b and the grounding switch 9b were accommodated, and the current transformer unit is provided in the end part of the interruption part 53a of the tank circumference wall of the interruption part 53b. It is installed via (60). The current transformer unit 60 accommodates the current transformer 6b in a cylindrical tank. The horizontal part 57a is comprised by the cross-shaped tank in which the disconnector 17a and the grounding switch 18a were accommodated, and the cylindrical tank which accommodated the connection bus bar.
    [36] The upright part 55b is comprised by the cross-shaped branch tank in which the disconnector 8c and the grounding switch 9c were accommodated, and it is the opposite side to the main busbar 1b side of the tank circumference wall of the interruption | blocking part 53c. It is provided to the end via the current transformer unit 62. The current transformer unit 62 houses the current transformer 6c in a cylindrical tank. The transformer unit 65 is connected to the main bus bar 1b side of the upright part 55b. The transformer unit 65 houses the transformer 16 in a cylindrical tank and is disposed in a space fitted by the upright portion 55b and the bus bar connection units 67a to 67c described later. The upright part 56b is comprised by the T branch type tank in which the disconnector 10b and the grounding switch 11b were accommodated, and the current transformer unit is provided in the end part of the interruption part 53c side of the tank circumference wall of the interruption part 53b. It is installed via 61. The current transformer unit 61 houses the current transformer 7b in a cylindrical tank.
    [37] The horizontal portion 57b is constituted by a cross-shaped tank in which the disconnector 17b and the ground switch 18b are accommodated in the case of the busbar communication lines 3a and 3c, and a cylindrical tank in which the connection busbar is accommodated. have. In the case of the busbar communication line 3b, the cross-shaped tank in which the disconnector 17b and the ground switch 18b are housed, and the cross-branched tank in which the disconnector 17c and the ground switch 18c are housed. It is composed by. The horizontal portions 57a and 57b are disposed on the same plane.
    [38] The bus bar connection unit 66a is provided at the end of the main bus line 1a side of the tank circumference wall of the breaker 53a constituting the breaker unit 51a of the single phase line 50a via the current transformer unit 58. The current transformer unit 58 houses the current transformer 6a in a cylindrical tank. The bus bar connection unit 66b is provided at the end of the main bus line 1a side of the tank circumference wall of the breaker 53a constituting the breaker unit 51c of the single-phase line 50b via the current transformer unit 58. The bus bar connection unit 66c is provided at the end of the main bus line 1a side of the tank circumference wall of the breaker 53a constituting the breaker unit 51a of the single phase line 50c via the current transformer unit 58. The bus bar connection units 66a to 66c house a disconnecting device 8a, a grounding switch 9a and a connecting bus in a cylindrical tank standing upright from the tank peripheral wall end.
    [39] The bus bar connection unit 67a is provided in the end part of the main bus line 1b side of the tank circumference wall of the breaker part 53c which comprises the breaker unit 51c of the single phase line 50a via the current transformer unit 63. As shown in FIG. The current transformer unit 63 houses the current transformer 7c in a cylindrical tank. The bus bar connection unit 67b is provided in the end part of the main bus line 1b side of the tank circumference wall of the breaker part 53c which comprises the breaker unit 51c of the single phase line 50b via the current transformer unit 63. The bus bar connection unit 67c is provided in the end part of the main bus line 1b side of the tank circumference wall of the breaker part 53c which comprises the breaker unit 51c of the single phase line 50c via the current transformer unit 63. The bus bar connection units 67a to 67c accommodate the disconnector 10c, the grounding switch 11c, and the connecting busbar in a cylindrical tank standing upright from the tank peripheral wall end.
    [40] The main bus bar 1 is composed of bus bar units 68a to 68c. The busbar units 68a to 68c accommodate busbar conductors in a cylindrical tank and are arranged on the opposite side to the opposite sides of the main busbars 1 and 2 of the busbar connection units 66a to 66c. The busbar units 68a to 68c are vertically arranged along the busbar connection units 66a to 66c. The bus bar unit 68a is connected to the bus bar connection unit 66a, the bus bar unit 68b is connected to the bus bar connection unit 66b, and the bus bar unit 68c is connected to the bus bar connection unit 66c.
    [41] The main bus bar 2 is comprised by bus bar units 69a-69c. The busbar units 69a to 69c accommodate busbar conductors in a cylindrical tank and are arranged on the opposite side to the opposing sides of the main busbars 1 and 2 of the busbar connection units 67a to 67c. The busbar units 69a to 69c are vertically arranged along the busbar connection units 67a to 67c. The bus bar unit 69a is connected to the bus bar connection unit 67a, the bus bar unit 69b is connected to the bus bar connection unit 67b, and the bus bar unit 69c is connected to the bus bar connection unit 67c.
    [42] In the present embodiment, bus units 68a to 68c are arranged on the opposite side of the main buses 1 and 2 of the bus bar connection units 66a to 66c, and the main busbars of the bus bar connection units 67a to 67c ( Although the case where bus unit units 69a-69c were arrange | positioned on the opposite side to the opposing side of 1, 2 was demonstrated, you may arrange | position on the opposing side of main busbars 1 and 2. As shown in FIG.
    [43] The line lead-out line 12 is constituted by a connection bus unit 70a, a current transformer unit 71a, and a cable head unit 72a. The connecting bus unit 70a houses the connecting bus in a cylindrical tank, and is connected to a cross-shaped tank constituting the horizontal portion 57a of the circuit breaker connecting unit 52a so as to vertically hang down. The current transformer unit 71a houses the current transformer 19a in a cylindrical tank. The cable head unit 72a houses the cable head 20a connected to the cable 73a in a cylindrical tank.
    [44] The line lead-out line 13 is constituted by a connection bus unit 70b, a current transformer unit 71b, and a cable head unit 72b. The connecting bus unit 70b accommodates the connecting bus in a cylindrical tank, and is connected to a cross-branched tank constituting the horizontal portion 57b of the breaker connecting unit 52b so as to vertically hang down. The current transformer unit 71b houses the current transformer 19b in a cylindrical tank. The cable head unit 72b houses the cable head 20b connected to the cable 73b in a cylindrical tank.
    [45] The line lead-out line 14 is constituted by a connection bus unit 70c, a current transformer unit 71c, and a cable head unit 72c. The connecting bus unit 70c houses a current transformer 19c in a cylindrical tank, and forms a horizontal cross-section tank constituting the horizontal portion 57b of the breaker connecting unit 52b of the bus bar connection line 3b. A tank different from the cross-shaped tank connected to the bus bar unit 70b). The current transformer unit 71c houses the current transformer 19c in a cylindrical tank. The cable head unit 72c houses the cable head 20c connected to the cable 73c in a cylindrical tank.
    [46] The connecting bus unit 70c is not vertically stretched by the manipulator 54b of the breaker unit 51b constituting the bus bar contact line 3b. Moreover, even if it hangs vertically, the cable lead-out line 13 may block and the cable 73c cannot be pulled out. Therefore, in the present embodiment, the connecting bus unit 70c is drawn out horizontally to the side of the connecting bus unit 70b at an angle along the main bus 2, and then vertically hangs along the connecting bus unit 70b. .
    [47] If the cable head unit 72c of the line lead-out line 14 is disposed adjacent to the cable head unit 72b of the line lead-out line 13, the insulation distance between the cable heads 72b and 72c is secured. In order to do this, it is necessary to increase the distance between the respective phases of the single-phase circuits 50a to 50c constituting the busbar communication line 3b. However, this increases the installation area of the gas insulated switchgear.
    [48] Therefore, the present embodiment is vertical so as to secure the insulation distance between the cable head units 72b and 72c without increasing the distance between the respective phases of the single-phase lines 50a to 50c constituting the busbar communication line 3b. The sagging connection bus unit 70c is pulled out horizontally to the side opposite to the line take-out line 12 side on the way, and the cable head unit 72c is disposed at a position higher than the cable head unit 72b. Moreover, it arrange | positions so that it may protrude on the opposite side to the line lead-out circuit 12 side rather than the cable head unit 72b so that it may not adjoin the cable head unit 72b.
    [49] The power receiving circuit 21a is constituted by breaker units 74a to 74c arranged between the main buses 1 and 2 so as to be orthogonal to the main bus bar 1 and arranged in parallel in the horizontal direction along the main bus bar 1. The breaker units 74a to 74c are arranged in parallel with the breaker unit 51a of the bus bar connection line 3a and are arranged in parallel with the breaker unit 51a. The breaker units 74a to 74c are constituted by the breaker 76a and the manipulator 77a. The breaker 76a and the manipulator 77a are configured similarly to those of the breaker units 51a to 51c.
    [50] At one end of the cylindrical tank circumferential wall constituting the blocking portion 76a of the breaker unit 74a, a bus bar connecting unit 78a is installed via the current transformer unit 80, and the other end is passed through the current transformer unit 81. The bus bar connection unit 79a is provided. The current transformer unit 80 houses the current transformer 23a in a cylindrical tank, and the current transformer unit 81 houses the current transformer 24a in a cylindrical tank.
    [51] At one end of the cylindrical tank circumferential wall constituting the blocking portion 76a of the breaker unit 74b, a bus bar connecting unit 78b is installed via the current transformer unit 80, and the other end is passed through the current transformer unit 81. The bus bar connection unit 79b is provided. At one end of the cylindrical tank circumferential wall constituting the blocking portion 76a of the breaker unit 74c, a bus bar connecting unit 78c is installed via the current transformer unit 80, and the other end is passed through the current transformer unit 81. The bus bar connection unit 79c is provided.
    [52] The bus bar connection units 78a to 78c store the disconnecting device 25a, the grounding switch 26a, and the connecting bus bar in a cylindrical tank, and are standing upright at one end of the tank circumferential wall. The busbar units 68a to 68c constituting the main busbar 1 are arranged on the side opposite to the busbar connection units 79a to 79c side of the busbar connection units 78a to 78c. The busbar units 68a to 68c are vertically arranged along the busbar connection units 78a to 78c. The bus bar connection unit 78a is connected to the bus bar unit 68a, the bus bar connection unit 78b is connected to the bus bar unit 68b, and the bus bar connection unit 78c is connected to the bus bar unit 68c.
    [53] The bus bar connection units 79a to 79c store the disconnecting device 27a, the grounding switch 28a, and the connecting busbar in a cylindrical tank, and are standing upright at the other end of the tank circumferential wall. The busbar units 68a to 68c constituting the main bus bar 1 are arranged on the side opposite to the busbar connection units 78a to 78c side of the busbar connection units 79a to 79c. The busbar units 68a to 68c are vertically arranged along the busbar connection units 79a to 79c. The bus bar connection unit 79a is connected to the bus bar unit 68a, the bus bar connection unit 79b is connected to the bus bar unit 68b, and the bus bar connection unit 79c is connected to the bus bar unit 68c.
    [54] The power receiving circuit 21b is constituted by breaker units 75a to 75c disposed between the main buses 1 and 2 so as to be orthogonal to the main bus 2 and arranged in parallel in the horizontal direction along the main bus 2. . The breaker units 75a to 75c are arranged in parallel with the breaker unit 51c of the bus bar communication line 3a, and are parallel to the breaker unit 51c. The breaker units 75a to 75c are constituted by the breaker 76b and the manipulator 77b. The breaker 76b and the manipulator 77b are configured similarly to those of the breaker units 51a to 51c.
    [55] At one end of the cylindrical tank circumferential wall constituting the blocking portion 76b of the circuit breaker unit 75a, a bus bar connecting unit 82a is installed via the current transformer unit 84, and the other end is passed through the current transformer unit 85. The bus bar connection unit 83a is provided. The current transformer unit 84 houses the current transformer 23b in a cylindrical tank, and the current transformer unit 85 houses the current transformer 24b in a cylindrical tank.
    [56] At one end of the cylindrical tank circumferential wall constituting the breaker unit 76b of the breaker unit 75b, a busbar connecting unit 82b is installed via the current transformer unit 84, and the other end is passed through the current transformer unit 85. The bus bar connection unit 83b is provided. At one end of the cylindrical tank circumferential wall constituting the blocking portion 76b of the circuit breaker unit 75c, a bus bar connecting unit 82c is installed via the current transformer unit 84, and the other end is passed through the current transformer unit 85. The bus bar connection unit 83c is provided.
    [57] The bus bar connection units 82a to 82c accommodate the disconnecting device 25b, the grounding switch 26b, and the connecting bus bar in a cylindrical tank, and are standing upright at one end of the tank circumferential wall. The busbar units 69a to 69c constituting the main busbar 2 are arranged on the side opposite to the busbar connection units 83a to 83c side of the busbar connection units 82a to 82c. The busbar units 69a to 69c are vertically arranged along the busbar connection units 82a to 82c. The bus bar connection unit 82a is connected to the bus bar unit 69a, the bus bar connection unit 82b is connected to the bus bar unit 69b, and the bus bar connection unit 82c is connected to the bus bar unit 69c.
    [58] The bus bar connection units 83a to 83c store the disconnecting device 27b, the grounding switch 28b, and the connecting bus bar in a cylindrical tank, and are standing upright at the other end of the tank circumferential wall. The busbar units 69a to 69c constituting the main bus bar 2 are arranged on the side opposite to the busbar connection units 82a to 82c side of the busbar connection units 83a to 83c. The busbar units 69a to 69c are vertically arranged along the busbar connection units 83a to 83c. The bus bar connection unit 83a is connected to the bus bar unit 69a, the bus bar connection unit 83b is connected to the bus bar unit 69b, and the bus bar connection unit 83c is connected to the bus bar unit 69c.
    [59] The bus line division lines 29a and 29b are connected to the main bus lines of the adjacent gas insulated switchgear, and are configured in almost the same way as the power receiving lines 21a and 21b. Therefore, the units constituting the bus bar division lines 29a and 29b are denoted by the same reference numerals as the units constituting the power receiving lines 21a and 21b, and the description thereof is partially omitted.
    [60] A disconnecting unit 35a, a grounding switch 36a, and a connecting bus are housed in a cylindrical tank constituting the connecting bus units 78a to 78c of the bus bar division line 29a. The current transformer 32a is housed in a cylindrical tank constituting the current transformer unit 80 of the bus bar division line 29a. A disconnector 33a, a grounding switch 34a, a grounding switch 37a, and a connection bus are housed in a cross-shaped tank constituting the current transformer units 79a to 79c of the bus bar division line 29a. Transformer unit in which a transformer 38a is housed in a cylindrical tank on the side opposite to the connection bus unit 78a to 78c side of a cross branch type tank constituting the busbar division lines 29a to the connection bus unit 79a to 79c. 86 is connected. The current transformer unit 81 of the bus line division line 29a houses the current transformer 32a in a cylindrical tank.
    [61] The disconnecting unit 35b, the grounding switch 36b, and the connecting bus bar are housed in the cylindrical tank constituting the bus bar units 82a to 82c of the bus bar division line 29b. The current transformer 32b is housed in a cylindrical tank constituting the current transformer unit 84 of the bus bar division line 29b. A disconnecting unit 33b, a grounding switch 34b, a grounding switch 37b, and a connecting bus are housed in a cross-shaped tank constituting the connecting busbar units 83a to 83c of the bus bar division line 29b. Transformer unit in which the transformer 38b is housed in a cylindrical tank on the side opposite to the connection bus unit units 82a to 82c side of the cross-branched tanks constituting the connection busbar units 83a to 83c of the busbar division line 29b. (87) is connected. The current transformer unit 85 of the bus line division line 29b houses the current transformer 31b in a cylindrical tank.
    [62] According to the present embodiment described above, since the busbar contact lines 3a to 3c are formed by the breaker units 51a to 51c of the horizontal installation, the installation height of the gas insulated switchgear can be reduced. In addition, busbar units 68a to 68c constituting the main busbar 1 are vertically arranged along busbar connection units 66a to 66c, and busbar units 69a to 69c constituting the main busbar 2 are busbar connected. Since they are arranged vertically along the units 67a to 67c, the dimensions of the main buses 1 and 2 opposite to the gas insulated switchgear can be shortened. Therefore, the installation area can be reduced while suppressing the installation height of the gas insulated switchgear.
    [63] According to this embodiment, the circuit breaker connecting unit 52a having the uprights 55a and 56a is connected between the breaker units 51a and 51b, and the breaker connecting unit having the uprights 55b and 56b ( Since the circuit breaker unit 51b, 51c is connected by 52b, the dimension of the horizontal parts 57a, 57b which comprise the circuit breaker connection unit 52a, 52b can be shortened, and the circuit breaker unit 51a, 51b can be shortened. ) And between the breaker units 51b and 51c can be shortened. Therefore, the dimension of the main buses 1 and 2 opposing directions of the gas insulated switchgear can be shortened, and the installation area of the gas insulated switchgear can be further reduced.
    [64] According to the present embodiment, the line lead-out lines 13 and 14 are simultaneously drawn out from one of the horizontal portions 57b of the breaker connecting unit 52b. In this embodiment, since the connection bus unit 70c of the line lead-out line 14 is drawn out horizontally to the side of the connection bus unit 70b of the line lead-out line 13 obliquely along the main bus line 2, The line lead-out lines 13 and 14 from one position of the horizontal portion 57b of the circuit breaker connection unit 52b without increasing the size of the horizontal portion 57b constituting the circuit breaker connection unit 52b than those of other lines. Can be withdrawn at the same time. Therefore, even if two line lead-out lines are drawn out simultaneously from the horizontal portion of the circuit breaker connection unit, the dimensions of the main bus lines 1 and 2 of the gas insulated switchgear are increased so that the installation area of the gas insulated switchgear does not increase.
    [65] In addition, in the present embodiment, when the connection bus unit 70c of the line lead-out line 14 is drawn out horizontally to the side of the connection bus unit 70b of the line lead-out line 13 obliquely along the main bus line 2. As described above, the connection bus unit 70c may be drawn out parallel to the main busbar 2 and horizontally, and then drawn out at right angles in the opposite direction of the main busbars 1 and 2. However, the diagonally drawn out side can shorten the connection bus length. Moreover, of the line lead-out circuit 14 connected to the single-phase circuits 50a to 50c between each phase of the busbar communication lines 3a to 3c, that is, between the single-phase circuits 50a and 50b and between the single-phase circuits 50b and 50c. The connection bus unit 70c may be taken out. For example, the connection bus unit 70c of the line lead-out line 14 connected to the single-phase line 50a is drawn out between the single-phase lines 50a and 50b, and the line lead-out line connected to the single-phase lines 50b and 50c. The connection bus unit 70c of 14 may be drawn out between the single phase lines 50b and 50c.
    [66] According to the present embodiment, the transformer unit 64 connected to the upright portion 55a of the breaker connection unit 52a is disposed in a space fitted by the upright portion 55a and the bus bar connection units 66a to 66c, Since the transformer unit 65 connected to the upright portion 55b of the connection unit 52b is disposed in the space fitted by the upright portion 55b and the bus bar connection units 67a to 67c, the transformer units 64 and 65 are provided. The installation height of the gas insulated switchgear does not appear to increase.
    [67] (Example 2)
    [68] A second embodiment of the present invention will be described with reference to Figs. 6 to 8 show the arrangement of the gas insulated switchgear of this embodiment. In the gas insulated switchgear according to the present embodiment, the main buses 1 and 2, the bus bar connection lines 3a to 3c, the power receiving circuits 21a and 21b, and the bus bar division lines 29a and 29b are improved. Since it is comprised like the previous example, the part attaches | subjects the same code | symbol and abbreviate | omits description of the part. The gas insulated switchgear of this embodiment is installed in an outdoor substation and is configured to draw electric power to a downstream power system via a bushing. For this reason, the structure of the track drawing lines 12-14 is different from the previous example.
    [69] The line lead-out line 12 is constituted by a connecting bus unit 70a, a current transformer unit 71a, and a bushing 88a. The connecting bus unit 70a is connected to a cross-shaped tank constituting the horizontal portion 57a of the circuit breaker connecting unit 52a via the current transformer unit 71a, and is lifted upright to the main bus line 1. It is bent at right angles to the side and extended horizontally, and is connected with the bushing 88a provided in the steel tower 89 on the main bus bar 1 side.
    [70] The line lead-out line 13 is constituted by a connecting bus unit 70b, a current transformer unit 71b, and a bushing 88b. The connecting bus unit 70b is connected to a cross-shaped tank constituting the horizontal portion 57b of the circuit breaker connecting unit 52b via the current transformer unit 71b, and is raised upright to hold the main bus 2 It is bent at right angles to the) side, extends horizontally, and is connected to a bushing 88b provided on the steel tower 89 on the main busbar 20 side.
    [71] The line lead-out line 14 is constituted by a connecting bus unit 70c, a current transformer unit 71c, and a bushing 88c. The connection bus unit 70c is a cross-shaped tank (connection bus unit 70b) constituting the horizontal portion 57b of the circuit breaker connection unit 52b of the bus communication line 3b via the current transformer unit 71c. A tank different from the crosswise branch tank connected via the current transformer unit 71b. In addition, the connection bus unit 70c is drawn out horizontally to the side of the connection bus unit 70b at an angle along the main bus bar 2, and is then raised upright along the connection bus unit 70b. At this time, the connection bus unit 70c is raised to a position higher than the connection bus unit 70b. Next, the connecting bus unit 70c is bent at a right angle to the main busbar 2 side, extends horizontally, and is connected to a bushing 88c provided in the steel tower 89 on the main busbar 2 side.
    [72] According to the present embodiment described above, the connecting bus unit 70c is drawn out horizontally to the side of the connecting bus unit 70b at an angle along the main bus line 2, and is then erected along the connecting bus unit 70b. Since it is raised on the side, the line lead-out lines 13 and 14 can be pulled out in the same direction even when the line lead-out lines 13 and 14 are simultaneously drawn out from one of the horizontal portions 57b of the circuit breaker connection unit 52b. . In addition, after connecting the bus bar unit 70c in parallel with the main bus bar 2 and horizontally, the connection bus unit 70c may be drawn out at right angles and horizontally in the opposite direction of the main bus bars 1 and 2.
    [73] According to the present embodiment, the connection bus unit 70c is raised to a position higher than the connection bus unit 70b, and is bent at a right angle to the main bus bar 2 side to extend horizontally. When the connecting bus units 70b and 70c are horizontally adjacent to each other, the respective phases of the single-phase circuits 50a to 50c constituting the bus bar connecting line 3b in order to secure the insulation distance between the connecting bus units 70b and 70c. You need to widen the distance. This increases the installation area of the gas insulated switchgear. However, in this embodiment in which the connection bus unit 70c is raised to a position higher than the connection bus unit 70b, the distance between each phase of the single-phase circuits 50a to 50c constituting the busbar communication line 3b is not increased. The insulation distance between the connection bus unit 70b, 70c can be ensured without doing so.
    [74] In addition, the same parts as in the previous example have the same effect as the previous example.
    [75] The present invention can be used for a gas insulated switchgear which must reduce the installation height while reducing the installation height, and in particular, gas insulation installed in an electric substation such as an indoor substation or an underground substation, which is limited by the installation height and the installation area. It is useful for switchgear.
    权利要求:
    Claims (9)
    [1" claim-type="Currently amended] A pair of main buses arranged oppositely;
    A bus bar communication line arranged between the main bus bars while being connected between the main bus bars and perpendicular to the main bus buses;
    A line lead-out line connected to the bus bar connection line,
    The busbar communication line is formed by connecting three circuit breaker units in a horizontal installation in parallel with three phases along the main busbar,
    Each of the main buses is a gas insulated switchgear, characterized in that the bus unit is arranged in three phases along a portion standing upright from the end of the bus communication line.
    [2" claim-type="Currently amended] A pair of main buses arranged oppositely;
    A bus bar communication line arranged between the main bus bars while being connected between the main bus bars and perpendicular to the main bus buses;
    A line lead-out line connected to the bus bar connection line,
    The busbar communication line is formed by connecting three circuit breaker units in a horizontal installation in parallel with three phases along the main busbar,
    Each of the main buses is a gas insulated switchgear comprising three phases of busbars arranged along a portion standing up from the main bus side end of the breaker unit located at both ends of the bus bar communication line.
    [3" claim-type="Currently amended] The method according to claim 1 or 2,
    And a plurality of bus line contact lines are arranged along the main bus line.
    [4" claim-type="Currently amended] The method according to claim 1 or 2,
    And the connection between the breaker units is made upright from the end of the breaker unit.
    [5" claim-type="Currently amended] The method of claim 1,
    And the main bus line is disposed on either one of the main bus counter side or the opposite side of the main bus counter side of a portion standing up from the end of the bus bar contact line.
    [6" claim-type="Currently amended] The method of claim 2,
    The main bus is disposed on either of the main bus opposing side or the opposite side of the main bus opposing side of a portion standing up from the main bus side end of the breaker unit located at both ends of the main bus communication line. Insulation switchgear.
    [7" claim-type="Currently amended] The method according to claim 1 or 2,
    The line drawing line is drawn out in a vertical direction from between the breaker units and at the same time when two line drawing lines are drawn out between one breaker unit, one side of the line drawing line is to the side of the other side of the line drawing line. Gas insulated switchgear, characterized in that drawn out horizontally.
    [8" claim-type="Currently amended] The method according to claim 1 or 2,
    The line drawing line is drawn out in a vertical direction from between the breaker units and at the same time, when two line drawing lines are drawn out between one breaker unit, one side of the line drawing line is horizontal between each phase of the bus line connecting line. Gas insulation switchgear characterized in that it is drawn out.
    [9" claim-type="Currently amended] The method according to claim 1 or 2,
    And a transformer unit connected between the breaker units adjacent to the space sandwiched by the upright portions from both ends of the breaker unit.
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    同族专利:
    公开号 | 公开日
    US6646861B1|2003-11-11|
    HK1049070B|2006-02-24|
    CN1372711A|2002-10-02|
    JP4099992B2|2008-06-11|
    CN1225069C|2005-10-26|
    KR100471360B1|2005-02-21|
    WO2001076032A1|2001-10-11|
    HK1049070A1|2006-02-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-03-31|Application filed by 가부시끼가이샤 히다치 세이사꾸쇼
    2000-03-31|Priority to PCT/JP2000/002086
    2002-11-25|Publication of KR20020088059A
    2005-02-21|Application granted
    2005-02-21|Publication of KR100471360B1
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/JP2000/002086|WO2001076032A1|2000-03-31|2000-03-31|Gas insulated switchgear|
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