• 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:
    An overvoltage protection device for metal-encased, gas-insulated high-voltage lines is disclosed. The device includes a low pass filter which comprises an inductance connected in series with the inner conductor of the high voltage line, and a capacitance connected between the inner conductor and the grounded casing. The inductance and capacitance form the low-pass filter which serves as a trap for high-frequency traveling waves. The invention is especially suited for protection of metal-encased and gas-insulated high-voltage lines and installations in conjunction with a conventional overvoltage arrester.
    公开号:SU1025341A3
    申请号:SU792814246
    申请日:1979-09-14
    公开日:1983-06-23
    发明作者:Бич Райнер；Дисснер Армин；Мюллер Бруно
    申请人:Сименс Аг (Фирма)；
    IPC主号:
    专利说明:

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    Fig. 1 The invention relates to an overvoltage protection device for gas-insulated high-voltage lines with a metal casing, an internal wire and between it and the ground potential of a discharge surge. A device for protecting cable lines containing overvoltage arresters C is known. However, this device protects a line insufficiently reliably. It is also known to have a similar device for protection in the form of an overvoltage arrester {2j. Known overvoltage arresters, which consist of a series of switching-on spark gaps and voltage-dependent resistances, become effective when the voltage on the wire to be protected for any reason exceeds a certain amount. In this case, they provide with a low resistance to discharge to the ground. As soon as the voltage reaches the so-called arc extinction voltage, the overvoltage arrester again goes into a state of rest, in which it has very high resistance to earth. . Despite the use of overvoltage arresters, the insulation of high voltage lines enclosed in a metal casing should have a significantly larger value than the highest possible operating voltage, since, on the one hand, the overvoltage and overvoltage voltage cannot be to any degree close to the highest operating voltage, and, on the other hand, overvoltage arresters cannot completely prevent the propagation of wandering overvoltage waves. The aim of the invention is to increase the effectiveness of protection by providing additional protection against stray waves in the high-voltage line. . The goal is achieved by the fact that a device for protection against overvoltages of gas-insulated high-voltage lines with a metal casing, internal wire and connected between it and the ground potential of an overvoltage arrester, is additionally equipped with a capacitor and an inductance connected — in series with the internal wire and made of the internal wire of the coil of the ferromagnetic core in the form of a ring with an internal diameter, corresponds to the width of the high-voltage line, and capacitor is in the form of one or more capacitors and connected between the inner conductor and the metal casing, in which the place of installation of the inductor and the capacitor is configured with an enlarged diameter and is provided with a flange. FIG. 1 is a schematic block diagram of a protection device in conjunction with an overvoltage arrester; in fig. 2 - the proposed device, the cut. The voltage-carrying internal wire 1 is enclosed in a metal casing of a gas-insulated high-voltage line. The line also has a grounded casing 2. An overvoltage surge 3 connects the inner wire 1 and the casing 2. The protection device 4 forms a low pass transmission filter consisting of coils 5 and b of inductance and capacitors 7 and 8. Coils 5 and 6 of inductance connected to the internal wire 1, and the capacitors 7 and 8 are connected between the internal wire 1 and the protective casing 2 with the copy 9. As the casing of the protection device (Fig. 2) is the end with a larger diameter end 10 of the section of the casing 11, whose internal wire 1 2 is made in the form of a pipe. A flange 13 is provided at the end 10 for connection with the next section of the casing. Between this and the adjacent flange 14 of the next section of the casing 15, a ring 16 is laid down. In the inner space of the end section 10, inductance coils 17 and capacitors 18 are installed in the axial direction, one after another, as well as capacitors 18. Inductance coil 17 is made as installed on the extension of the internal wire 19 of the enclosed section 15 of coil 20 consisting of a casing from. an insulating material 21 and a wire 22 placed on it. In order to ensure sufficient strength against short-circuiting, the wire 22 can be fixed to the housing 21 by means of a bond and a cured synthetic material. The coil 20 is surrounded by a sheet iron core 23, whose inner diameter approximately corresponds to the inner diameter of the enclosed section 15. Due to this, the iron core 23 is insulated in the same way / as the casing using insulated gas contained in the construction. Instead of a sheet iron ring 23, a ferrite ring can be used. The leaf rings of the iron core 23 are pressed against the pressure ring 24 against the flange 14.
    The coil 20, with its end facing the condenser 18, is coaxially connected to the inner wire 12 of the enclosed housing section 11. Similarly, at the junction 25, the ring 26 serves to secure the capacitor structure consisting of individual ceramic capacitors or masses; capacitors 27. Several columns of capacitors 27 or the surface of ring 26 may be provided, depending on the —f6 13
    my capacitor values are 18. At the same time, these capacitors can receive a support for the inner wire 12 relative to the housing.
    The protection device can also be made as a stand-alone coig structural unit. For this, the part corresponding to the end section 10 is flanged at both ends and can be embedded between the enclosed sections of the high-voltage line.
     //
    Ix
    fig 2
    权利要求:
    Claims (2)
    [1]
    DEVICE FOR PROTECTION AGAINST VOLTAGE OF GAS ISOLATED HIGH VOLTAGE LINES with a metal casing, an inner wire and an overvoltage arrestor connected between it and the earth potential, characterized in that, in order to increase efficiency by providing additional protection against stray waves in the high voltage line, it is additionally equipped with an inductor connected in series with the inner wire and made of a ferromagnetic core installed along the inner wire of the coil and in the form of a ring with an inner diameter corresponding to the light width of the high-voltage line, and the capacitor is made in the form of one or more capacitors and is connected between the inner wire and the metal casing, which is made with an increased diameter and is equipped with a flange at the installation site of the inductor and capacitor.
    SU „1025341 FIG. 1
    [2]
    2P
    类似技术:
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    SU985886A1|1982-12-30|High-voltage winding of ac electric machine stator
    SU855832A1|1981-08-15|Device for overvoltage protection of electric installation
    同族专利:
    公开号 | 公开日
    FR2436520B1|1984-03-30|
    GB2030390B|1983-06-15|
    DE2840900B1|1979-08-02|
    DE2840900C2|1985-03-14|
    BR7905923A|1980-05-27|
    US4314303A|1982-02-02|
    MX146235A|1982-05-31|
    CH642786A5|1984-04-30|
    GB2030390A|1980-04-02|
    CA1122267A|1982-04-20|
    FR2436520A1|1980-04-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB430017A|1932-12-09|1935-06-11|Merlin Gerin|Improvements in protecting means for electric supply mains|
    US3456215A|1964-09-02|1969-07-15|Peter A Denes|High frequency low pass filter|
    US3378731A|1965-07-26|1968-04-16|Westinghouse Electric Corp|High voltage substation for metropolitan areas|
    BE786785A|1971-07-28|1973-01-26|Amp Inc|ELECTRICAL FILTERING ELEMENT|
    US3733521A|1971-09-27|1973-05-15|Ohio Brass Co|Lightning arrester|
    DE2247999B2|1972-09-27|1978-03-02|Siemens Ag, 1000 Berlin Und 8000 Muenchen|Metal-enclosed, gas-insulated high-voltage system with a surge arrester|FR2535918B1|1982-11-10|1985-10-18|Hamelin Joel|OVERVOLTAGE PROTECTION DEVICE|
    DE3615236A1|1986-05-06|1987-11-12|Licentia Gmbh|Overvoltage protection arrangement for fuzing and detonating means|
    FR2721765B1|1994-06-24|1996-07-26|Alcatel Cable|Protection device against high transient disturbances.|
    US7123463B2|2002-04-15|2006-10-17|Andrew Corporation|Surge lightning protection device|
    US20090323245A1|2005-04-27|2009-12-31|Abb Technology Ltd.|Device for Reduction of Voltage Derivative|
    EP2194540A1|2008-12-08|2010-06-09|ABB Research Ltd.|High voltage bushing|
    EP2287990A1|2009-08-18|2011-02-23|ABB Research Ltd.|A device protecting against high frequency overvoltage|
    EP2747094A1|2012-12-21|2014-06-25|ABB Technology AG|Very fast transient overvoltage attenuator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2840900A|DE2840900C2|1978-09-18|1978-09-18|Protection device against overvoltages for gas-insulated high-voltage lines with metal encapsulation|
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