Double-break interlock fast switch for integrated series compensation current limiting device
A technology of current limiting device and fast switching, applied in high-voltage/high-current switches, electrical switches, high-voltage air circuit breakers, etc., can solve the problem of large operating loss and difficulty in improving the short-circuit current limiting rate of saturable reactor type series compensation current-limiting devices , The series resonance type series compensation current limiting device has the problem of high resonance overvoltage, and achieves the effect of efficient utilization, convenient large-scale manufacturing and large-scale promotion.
Active Publication Date: 2021-10-19
XI AN JIAOTONG UNIV
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Problems solved by technology
[0006] In response to the above problems, the present invention proposes a double-break interlocking fast switch for an integrated series compensation current limiting device. High resonant overvoltage, and the short-circuit current limiting rate of the saturated reactor type series compensation current limiting device is difficult to increase. Efficiently utilize the electromagnetic driving force of the fast repulsion mechanism to realize the electrical and structural interlocking of the two vacuum breaks
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[0026] Taking the specific implementation scheme of the 31.5kV double-break interlocking fast switch as an example, the double-break interlocking fast switch for the integrated series compensation current limiting device of the present invention is further introduced in conjunction with the accompanying drawings.
[0027] figure 1Shown is the 31.5kV double-break interlocking fast vacuum switch used in the integrated series compensation current limiting device of the present invention, including the mechanism box 105, the first coil 101 of the repulsion mechanism and the second coil 102 of the repulsion mechanism placed in the mechanism box 105 And the repulsion disc 103, the transmission rod 104 fixedly connected with the repulsion disc, the first insulating pull rod 201 fixedly connected with one side of the transmission rod 104, the second insulating pull rod 301 fixedly connected with the other side of the transmission rod 104, and the first insulating rod 301 fixedly connec...
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The invention proposes a double-break interlocking fast switch for an integrated series compensation current limiting device and its working method, which is characterized in that it includes the first coil of the repulsion mechanism, the second coil of the repulsion mechanism, the repulsion disk, and the repulsion disk is fixedly connected The transmission rod, the first insulating rod fixedly connected to one side of the transmission rod, the second insulating rod fixedly connected to the other side of the transmission rod, the first fracture vacuum interrupter fixedly connected to the first insulating rod, and the second The second fractured vacuum interrupter is fixedly connected with the insulating tie rod. Under the action of the first coil or the second coil, the repulsive disk drives the first fracture vacuum interrupter to realize the opening operation, and at the same time drives the second fracture vacuum interrupter to close to realize the interlocking of the electrical structure. The double-break interlocking fast switch can be connected in series or in parallel with the series compensation branch and the current limiting branch formed by the fractures of each vacuum interrupter, economically and flexibly realize the development of a compact integrated series compensation current limiting device.
Description
technical field [0001] The invention relates to the technical field of fast vacuum switches, in particular to a double-break interlock fast vacuum switch for an integrated series compensation current limiting device. Background technique [0002] With the rapid development of my country's power system scale, the short-circuit current of power grids at various voltage levels is increasing year by year, which seriously affects the safe and stable operation of power systems and equipment. The voltage drop at the end of the line is too large, which seriously affects the power supply quality of the power system. The development of fast switching current limiter technology provides an economical and effective solution for the limitation of short-circuit current in the power grid; at the same time, the development of line series compensation technology or flexible controllable series compensation technology will increase the voltage at the end of the power grid line and improve the ...
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IPC IPC(8): H01H33/666H01H33/50
CPCH01H33/50H01H33/666
Inventor 姚晓飞耿云管臣丁健刚荣毅耿英三艾绍贵刘志远王建华
Owner XI AN JIAOTONG UNIV