• 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 provides a short-circuit breaking test system for a marine electric appliance, simulates three degrees of freedom motion of horizontal swing, longitudinal swing and bow swing of the body of a ship by a swing test device, which provides an offshore swing environment for the marine electric appliance to be tested; meanwhile, a power supply device supplies required electric power to the marine electrical appliance to be tested, to perform a short-circuit breaking performance test. The short-circuit breaking test of the marine electrical appliance in the offshore swing environment is realized, and thus the accuracy of the test results is improved.
    公开号:NL2023854A
    申请号:NL2023854
    申请日:2019-09-19
    公开日:2020-04-30
    发明作者:Gao Fei；Xu Fan；Liu Yong；Liang Guobin
    申请人:Xian High Voltage Apparatus Res Institute Co Ltd；China Xd Electric Co Ltd；
    IPC主号:
    专利说明:

    Deze publicatie komt overeen met de oorspronkelijk ingediende stukken.
    Short-Circuit Breaking Test System for Marine Electrical Appliance
    Technical Field
    The present invention relates to the field of electrical testing, and more particularly to a short-circuit breaking test system for marine electrical appliance.
    Background of the Invention
    Marine electrical appliance is an electrical product that works in an offshore swing environment. Marine electrical appliance needs to be able to break short-circuit current in time in case of short-circuit fault on the line, so as to ensure safety of equipment and personnel on board. At present, the short-circuit breaking test for marine products cannot simulate the special environment of offshore swing, resulting in inaccurate test results.
    Summary of the Invention
    In view of the above, the present invention provides a short-circuit breaking test system for marine electrical appliances, in order to achieve the purpose of performing short-circuit breaking test for the marine electrical appliances in the offshore swing environment, so as to improve the accuracy of the test results.
    In order to achieve the above purpose, the proposed solution is as follows:
    a short-circuit breaking test system for marine electrical appliance, comprising a power supply device and a swing test device.
    the swing test device being used for simulating three degrees of freedom motion of horizontal swing, longitudinal swing and bow swing of the body of a ship, and providing an offshore swing environment for the marine electric appliance to be tested;
    the power supply device being used for connecting through a cable to an input end of a power supply of the marine electric appliance to be tested, to provide electric energy for the marine electrical appliance to be tested;
    a current sensor of the marine electrical appliance to be tested being used for collecting current provided by the power supply device;
    a controller of the marine electrical appliance to be tested, being configured to perform a breaking action after determining a short circuit according to the current.
    Alternatively, the short-circuit breaking test system further comprises a clamp, springs and insulating ropes.
    The clamp is fastened to the cable.
    The clamp includes two fixing structures, each of which is fixedly connected to one end of one of the springs, the other end of the spring is connected to one end of one of the insulating ropes, and the other end of the insulating rope is fixed to the ground or the wall.
    Alternatively, the power supply device specifically includes a high voltage bus, a variable frequency speed regulation system, a drag motor, an excitation system, an impact generator, a first switch, a second switch, a third switch, a fourth switch, a first current regulation circuit, a first voltage regulation circuit, a first high voltage power supply bus, a transformer, a second current regulation circuit, a second voltage regulation circuit, and a second high voltage power supply bus.
    The high voltage bus is connected to the variable frequency speed regulation system, the drag motor, and the impact generator in sequence.
    The high voltage bus is also connected to the excitation system, the impact generator, the first switch, the second switch, the transformer, the second current regulation circuit, and the second high voltage power supply bus in sequence.
    The second voltage regulation circuit is connected to the second high voltage power supply bus.
    The high voltage bus is further connected to the third switch, the fourth switch, the first current regulation circuit, and the first high voltage power supply bus in sequence.
    The first voltage regulation circuit is connected to the first high voltage power supply bus.
    A connection between the first switch and the second switch is connected to a connection between the third switch and the fourth switch.
    The first voltage regulation circuit and the second voltage regulation circuit are both configured to regulate waveform parameters of voltage.
    The first current regulation circuit and the second current regulation circuit are both configured to regulate waveform parameters of current.
    Alternatively, the swing test device specifically includes: an oil source system, a control system and a swing test bench.
    The control system is used for controlling the oil source system to supply hydraulic oil to a hydraulic servo system of the swing test bench.
    The control system is also used for controlling the swing test bench to simulate three degrees of freedom motion of horizontal swing, longitudinal swing and bow swing of the body of a ship.
    The swing test bench is used for placing the marine electrical appliance to be tested.
    Alternatively, the swing test device further includes: a pedestal fixed to the ground.
    The swing test device is fixed on the pedestal.
    Alternatively, the oil source system specifically includes: an oil tank, a hydraulic pump, a first servo valve, a second servo valve and a third servo valve.
    An input port of the hydraulic pump is connected to the oil tank through a pipe.
    An output port of the hydraulic pump is connected to the first servo valve, the second servo valve, and the third servo valve through pipes, respectively.
    A servo interface connected to the first servo valve, and a hydraulic servo system for simulating degrees of freedom of motion of horizontal swing of the body of a ship provide hydraulic oil.
    A servo interface connected to the second servo valve, and a hydraulic servo system for simulating degrees of freedom of motion of longitudinal swing of the body of a ship provide hydraulic oil.
    A servo interface connected to the third servo valve, and a hydraulic servo system for simulating degrees of freedom of motion of bow swing of the body of a ship provide hydraulic oil.
    Alternatively, the oil source system and the control system are disposed in a first electromagnetic shielding chamber, and the swing test bench is disposed in a second electromagnetic shielding chamber.
    A signal acquired by a sensor included in the swing test bench is transmitted to the control system through a fiber optic isolator.
    Alternatively, the sensor included in the swing test bench is provided with a shielding layer outside, and the shielding layer is grounded.
    Compared with the prior art, the technical solution of the present invention has the following advantages:
    in the short-circuit breaking test system of the marine electric appliance provide by the technical solution, the swing test bench simulates three degrees of freedom motion of horizontal swing, longitudinal swing and bow swing of the body of a ship, which provides an offshore swing environment for the marine electric appliance to be tested; meanwhile, a power supply device supplies required electric power to the marine electrical appliance to be tested, to perform a short-circuit breaking performance test. The short-circuit breaking test of the marine electrical appliance in the offshore swing environment is realized, and thus the accuracy of the test results is improved.
    Brief Description of the Drawings
    In order to more clearly explain the embodiments of the invention or the technical solution in the prior art, drawings that need to be used in the description in embodiments or the prior art will be simply introduced below, obviously the drawings in the following description are merely some examples of the invention, for persons ordinarily skilled in the art, it is also possible to obtain other drawings according to the provided drawings without making creative efforts.
    FIG. 1 is a structural schematic diagram of a short-circuit breaking test system for a marine electrical appliance according to an embodiment of the present invention.
    FIG. 2 is a schematic diagram of a fixture for fixing a cable according to an embodiment of the present invention.
    FIG. 3 is a schematic diagram of an electrical structure of a power supply device according to an embodiment of the present invention.
    FIG. 4 is a structural diagram of a first voltage regulation circuit according to an embodiment of the present invention.
    FIG. 5 is a structural diagram of a first current regulation circuit according to an embodiment of the present invention.
    FIG. 6 is a structural schematic diagram of a swing test device according to an embodiment of the present invention.
    FIG. 7 is a structural schematic diagram of an oil source system according to an embodiment of the present invention.
    Detailed Description of the Preferred Embodiments
    Hereinafter the technical solution in the embodiments of the present invention will be described clearly and integrally in combination with the accompanying drawings in the embodiments of the present invention, and obviously the described embodiments are merely part of the embodiments, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that are obtained by persons skilled in the art without making creative efforts fall within the protection scope of the present invention.
    The embodiment provides a short-circuit breaking test system for a marine electrical appliance, and referring to FIG. I, the short-circuit breaking test system includes a power supply device 11 and a swing test device 12. The swing test device 12 is used for simulating three degrees of freedom motion of horizontal swing, longitudinal swing and bow swing of the body of a ship, and providing an offshore swing environment for a marine electrical appliance 13 to be tested. Horizontal swing refers to swing in a left-right direction, longitudinal swing refers to swing in a front-back direction, and bow swing refers to that a ship bow swings in a left-right direction. The power supply device is connected through a cable to an input end of a power supply of the marine electrical appliance 13 to be tested, to provide the required electric energy for the marine electrical appliance to be tested.
    The short-circuit breaking test system for a marine electrical appliance according to the present embodiment has such a working principle that the swing test device 12 provides an offshore swing environment for the marine electrical appliance 13 to be tested, while the power supply device supplies the required electric power to the marine electrical appliance 13 to be tested; a current sensor of the marine electrical appliance 13 to be tested collects the current supplied by the power supply device 12 in real time, and a controller of the marine electrical appliance 13 to be tested acquires the current collected by the current sensor, and after determining occurrence of the short circuit according to the current, performs the breaking action to carry out the short-circuit breaking test. The short-circuit breaking test of the marine electrical appliance in the offshore swing environment is realized, and thus the accuracy of the test results is improved.
    In a specific embodiment, the cable is fixed by a fixture as shown in FIG. 2, preferably the cable is a flexible cable. The clamp 21 is fixed on the cable 14. The clamp 21 includes two fixing structures 211, each of which is fixedly connected to one end of one spring 22, and the other end of the spring 22 is connected to one end of one insulating rope 23, and the other end of the insulating rope 23 is fixed to the ground or the wall. The cable is fixed by the fixture as shown in FIG. 2, w'hich eliminates damages to the cable, high voltage bus and other devices during swing.
    In a specific embodiment, that power supply device 11 is shown in FIG. 3. The pow'er supply device 11 specifically includes a high voltage bus 111, a variable frequency speed regulation system 112, a drag motor 113, an excitation system 114, an impact generator 115, a first switch 116, a second switch 117, a third switch 118, a fourth sw'itch 119, a first current regulation circuit 120, a first voltage regulation circuit 121, a first high voltage power supply bus 122, a transformer 123, a second current regulation circuit 124, a second voltage regulation circuit 125, and a second high voltage power supply bus 126. The high voltage bus 111 is specifically a 10 kV high voltage bus, the first high voltage bus 122 is a specifically a 10 kV high voltage bus, and the second high voltage bus 126 is specifically a 35 kV high voltage bus.
    The high voltage bus 111 is connected to the variable frequency speed regulation system 112, the drag motor 113, and the impact generator 115 in sequence. The variable frequency speed regulation system 112 is used for controlling variable frequency, speed regulation, start-up, and the like of the drag motor 113. The drag motor 113 is used for dragging the impact generator 115 to operate.
    The high voltage bus 111 is further connected to the excitation system 114, the impact generator 115, the first switch 116, the second switch 117, the transformer 123, the second current regulation circuit 124, and the second high voltage pow'er supply bus 126 in sequence. The excitation system 114 provides excitation current to a stator of the impact generator 115, and the second voltage regulation circuit 125 is connected to the second high voltage power supply bus 126.
    The high voltage bus 111 is further connected to the third switch 118, the fourth switch 119, the first current regulation circuit 120 and the first high voltage power supply bus 122 in sequence; the first voltage regulation circuit 121 is connected to the first high voltage power supply bus 122.
    A connection between the first switch 116 and the second switch 117 is connected to a connection between the third switch 118 and the fourth switch 119. By switching off and on the first switch 116, the second switch 117, the third switch 118 and the fourth switch 119, different power supply schemes are provided for the marine electrical appliance 13 to be tested. In scheme 1, the first switch 116 and the second switch 117 are switched on, the third switch 118 and the fourth switch 119 are switched off, and the impact generator 115 is started to provide a 35 kV high voltage. In scheme II, the first switch 116 and the fourth switch 119 are switched on, the second switch 117 and the third switch 118 are switched off, the impact generator 115 is started to provide a 10 kV high voltage. In scheme III, the third switch 118 and the fourth switch 119 are switched on, the first switch 116 and the second switch 117 are switched off, the 10 kV high voltage supplied by the high voltage bus 111 is used directly. In scheme IV, the third switch 118 and the second switch 117 are switched on, the first switch 116 and the fourth switch 119 are switched off, and the 10 kV high voltage supplied from the high voltage bus 111 is boosted to 35 kV high voltage and is supplied to the marine electrical appliance 13 to be tested. Compared with the high voltage electricity directly supplied by a DC bus 111, the impact generator 115 has a large power and can provide a large current, which is suitable for large capacity test.
    The first voltage regulation circuit 121 and the second voltage regulation circuit 125 are both configured to regulate waveform parameters of voltage. The first voltage regulation circuit 121 and the second voltage regulation circuit 125 are, in particular, a TRV (transient recovery voltage) regulation device. FIG. 4 shows a first voltage regulation circuit 121 comprising 10 resistors and 10 capacitors, the resistors being used in parallel or in series, the capacitors being used in parallel, the resistors being in series with the capacitors. Through combination of different resistors and capacitors, the voltage waveform can be adjusted, which can meet the requirements on a frequency modulation branch of the power supply of the marine electrical appliance to be tested.
    The first current regulation circuit 120 and the second current regulation circuit 124 are both configured to regulate waveform parameters of current. FIG. 5 shows a first current regulation circuit 120 varying a reactance value of the current regulation circuit.
    Referring to FIG. 6, the swing test device 12 specifically includes: an oil source system 131, a control system 132 and a swing test bench 133. The control system 132 is used for controlling the oil source system 131 to supply hydraulic oil to a hydraulic servo system of the swing test bench 133, and is also used for controlling the swing test bench 133 to simulate three degrees of freedom motion of horizontal swing, longitudinal swing and bow swing of the body of a ship. The swing test bench 133 is used for placing the marine electrical appliance 13 to be tested.
    A pedestal fixed on the ground may also be provided, the swing test bench 133 is fixed on the pedestal, thereby ensuring stability of the swing test bench 133 during swing, and grounding of the pedestal ensures electrical safety of the marine electrical appliance 13 to be tested.
    Referring to FIG. 7, the oil source system 131 specifically includes: an oil tank 17-1, a hydraulic pump 17-2, a high-pressure oil filter 17-3, a pressure sensor 17-4, a pressure gauge 17-5, an accumulator 17-6, a first servo valve 17-7, a second servo valve 17-8, A third servo valve 17-9, a servo interface 17-10, a pressure reducing valve 17-11, an electromagnetic reversing valve 17-12, an unloading valve 17-13, a proportional relief valve 17-14, a proportional relief valve amplifying plate 17-15, a water cooling cooler 17-16, a water pipe joint 17-18, a return oil filter 17-19, an electric-contact thermometer 17-20, a hydraulic control one-way valve 17-21.
    An input port of the hydraulic pump 17-2 is connected to the oil tank 17-1 through a pipe, an output port of the hydraulic pump 17-2 is connected to the first servo valve 17-7, the second servo valve 17-8 and the third servo valve 17-9 through a pipe, respectively, to provide hydraulic oil for the servo valves, respectively. The servo interface 17-10 connected to the first servo valve 17-7, and a hydraulic servo system for simulating degrees of freedom of motion of horizontal swing of the body of a ship provide hydraulic oil. The servo interface 17-10 connected to the second servo valve 17-8, and a hydraulic servo system for simulating degrees of freedom of motion of longitudinal swing of the body of a ship provide hydraulic oil. The servo interface 17-10 connected to the third servo valve 17-9, and a hydraulic servo system for simulating degrees of freedom of motion of bow swing of the body of a ship provide hydraulic oil.
    The high-pressure oil filter 17-3, the pressure sensor 17-4, and the accumulator 17-6 are sequentially connected between the output port of the hydraulic pump 17-2 and the first servo valve 17-7. The pressure gauge 17-5 is connected to the pressure sensor 17-4, The proportional relief valve 17-14 is connected to the proportional relief valve amplifying plate 17-15. The unloading valve 17-13 is connected to the proportional relief valve 17-14 and the water cooling cooler 17-16. The water cooling cooler 17-16 is connected to the return oil filter 17-19. The return oil filter 17-19 is connected to the oil tank 17-1, and the water cooling cooler 17-16 is connected to the water pipe joint 17-18. The electromagnetic reversing valve 17-12 is connected to the pressure reducing valve 17-11, and the pressure reducing valve 17-11 is connected to the hydraulic control one-way valve 17-21.
    The first servo valve 17-7, the second servo valve 17-8 and the third servo valve 17-9 are connected to the hydraulic control one-way valve 17-21. The hydraulic control one-way valve 17-21 is connected to the water cooling cooler 17-16 and further connected to the oil tank 17-1. The oil tank 17-1 can also be connected to devices such as an electric-contact thermometer 17-20.
    In order to solve electromagnetic interference problem during the test, the oil source system 131 and the control system 132 are disposed in a first electromagnetic shielding chamber, the swing test bench 133 is disposed in a second electromagnetic shielding chamber; the power supply device 11 is disposed in a power supply chamber, which provides isolation between the power supply device 11 and the swing test device 12, as well as isolation between the control system 132 and the swing test bench 133, avoiding electromagnetic interference to the sensors in the swing test bench. A signal acquired by a sensor included in the swing test bench 133 is transmitted to the control system 132 through a fiber optic isolator. The sensor included in the swing test bench 133 is provided with a shielding layer outside, and the shielding layer is grounded. The second electromagnetic shielding chamber is provided with a first high-voltage copper row and a second high-voltage cop row. The first high-voltage power supply bus 122 is connected to the first high-voltage copper row, and the second high-voltage power supply bus 126 is connected to the second high-voltage copper row. An input end of the power supply of the marine electrical appliance 13 to be tested is connected to a corresponding high-voltage copper row via a cable.
    The sensor included in the swing test bench 133 may specifically be an angular displacement sensor that captures signals of a horizontal swing angle, a longitudinal swing angle and a bow swing angle, and transmits them to the control system 132.
    The apparatus embodiments described above are merely illustrative, and some or all of the modules therein may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. Those ordinarily skilled in the art will understand and implement this embodiment without creative effort.
    In this text, relational terms such as first and second and the like are only used to distinguish one entity or operation from another entity or operation, and the existence of any such actual relationship or order between these entities or operations is not necessarily required or implied. Moreover, the term “comprise”, “include” or any other variant intends to cover the non-exclusive inclusions, so that a process, a method, a commodity or a device comprising a series of elements comprise not only those elements, but also other elements not explicitly listed, or further comprise inherent elements of such process, method, commodity or device. An element that is defined by the phrase comprising a ... does not exclude the presence of additional elements in the process, method, product, or equipment that comprises the element.
    In this specification, the various embodiments are described in a progressive manner, and each embodiment focuses on differences from the other embodiments, and the same or similar parts between the various embodiments may be referred to each other.
    The above description of the disclosed embodiments of the present invention enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Accordingly, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
    权利要求:
    Claims (8)
    [1]
    Conclusions
    A short circuit breaker test system for a marine electrical appliance, characterized by comprising a power supply device and a swing motion tester;
    the yaw motion tester being used to simulate three degrees of freedom of horizontal yaw, longitudinal yaw and bow yaw of a ship's body, and providing an offshore yaw motion environment for the marine electrical device to be tested;
    the power supply device being used for connection via a cable to an input end of a power supply of the maritime electrical appliance to be tested, to provide the required electrical energy for the maritime electrical appliance to be tested;
    wherein a current sensor of the marine electrical device under test is used to collect current supplied by the power supply device;
    wherein a control device of the maritime electrical device to be tested is arranged to perform an interrupt action after determining a short circuit according to the current.
    [2]
    The short circuit breaker test system according to claim 1, characterized by further comprising: an Idem, springs and insulating ropes;
    the clamp being attached to the cable;
    the clamp comprising two fastening structures, each fixedly connected to one end of one of the springs, the other end of the spring connected to one end of one of the insulating ropes, and the other end of the insulating rope is attached to the ground or to a wall.
    [3]
    The short-circuit interruption test system according to claim 1, characterized in that the power supply device is specifically a high voltage bus, a variable frequency speed control system, a drag motor, a generating system, an impact generator, a first switch, a second switch, a third switch, a fourth switch, a first current control circuit comprising a first voltage control circuit, a first high voltage power supply bus, an inverter, a second current control circuit, a second voltage control circuit, and a second high voltage power supply bus;
    wherein the high voltage bus is sequentially connected to the variable frequency speed control system, the drag motor, and the impact generator;
    the high voltage bus also being successively connected to the generating system, the impact generator, the first switch, the second switch, the inverter, the second current control circuit, and the second high voltage power supply bus;
    wherein the second voltage control circuit is connected to the second high voltage power supply bus;
    wherein the high voltage bus is further successively connected to the third switch, the fourth switch, the first current control circuit, and the first high voltage power supply bus;
    wherein the first voltage control circuit is connected to the first high voltage power supply bus;
    wherein a connection between the first switch and the second switch is connected with a connection between the third switch and the fourth switch;
    wherein the first voltage control circuit and the second voltage control circuit are both arranged to control voltage waveform parameters;
    wherein the first current control circuit and the second current control circuit are both arranged to control waveform parameters of current.
    [4]
    The short circuit interruption test system according to claim 3, characterized in that the oscillation tester specifically comprises: an oil well system, a control system and an oscillation tester;
    wherein the control system is used to control the oil source system to supply hydraulic oil to a pendulum swing dynamometer servo system;
    the control system also being used to control the swing test bench to simulate three degrees of freedom of horizontal swing, longitudinal swing and bow swing of a ship's body;
    the pendulum motion dynamometer being used to position the marine electrical equipment under test.
    [5]
    The short circuit interruption test system according to claim 4, characterized in that the swing motion tester further comprises: a foot bounce attached to the ground;
    wherein the swing motion tester is mounted on the base.
    [6]
    The short circuit breaker test system according to claim 4, characterized in that the oil well system specifically comprises: an oil tank, a hydraulic pump, a first servo valve, a second servo valve and a third servo valve;
    wherein an input port of the hydraulic pump is connected to the oil tank via a conduit;
    wherein an output port of the hydraulic pump is respectively connected to the first servo valve, the second servo valve, and the third servo valve via lines;
    wherein a servo interface connected to the first servo valve, and a hydraulic servo system for simulating degrees of freedom of horizontal swinging of the body of a ship provide hydraulic oil;
    wherein a servo interface connected to the second servo valve, and a hydraulic servo system for simulating degrees of freedom of longitudinal pendulum movement of the ship provide hydraulic oil;
    wherein a servo interface connected to the third servo valve, and a hydraulic servo system to simulate degrees of freedom of bow swing of the body of a ship provide hydraulic oil.
    [7]
    The short circuit interruption test system according to claim 4, characterized in that the oil source system and the control system are housed in a first electromagnetic shielding chamber, and the oscillation test bench is housed in a second electromagnetic shielding chamber;
    wherein a signal obtained by a sensor included in the pendulum motion test bench is sent to the control system via a fiber optic insulator.
    [8]
    The short-circuit interruption test system according to claim 4, characterized in that the sensor included in the pendulum motion test bench is provided with a shield layer exterior, and the shield layer is grounded.
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    CN206558966U|2017-03-24|2017-10-13|东众电气股份有限公司|Multi-functional messenger wire anchor ear|
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    法律状态:
    优先权:
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    CN201811092131.1A|CN110927619B|2018-09-19|2018-09-19|Short circuit on-off test system of marine electrical appliance|
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