Emergency operation circuit for permanent magnet vacuum circuit breaker
A permanent magnet vacuum and emergency operation technology, applied in high-voltage air circuit breakers, emergency power supply arrangements, circuits, etc., can solve the problems of circuit breaker opening and closing refusal to operate, lack of permanent magnet vacuum circuit breaker opening and closing emergency operation circuits, etc. , to achieve the effect of improving work efficiency, reducing power outage time, and excellent versatility
Pending Publication Date: 2018-02-16
SHENZHEN POWER SUPPLY BUREAU
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Problems solved by technology
Once the controller fails, it will lead to the protection action of the permanent magnet vacuum circuit breaker or the refusal of the circuit breaker to open and close after manual opening, which will have a great impact on the length of power outage of electricity customers and the reliability of power supply of power supply enterprises. negative impact
[0003] However, there is currently no emergency operation circuit on the market that can operate the opening and closing of permanent magnet vacuum circuit breakers in a short period of time
Method used
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] Such as Figure 1 to Figure 5 As shown, in the embodiment of the present invention, an emergency operation circuit for a permanent magnet vacuum circuit breaker is proposed, including:
[0030] a hand-cranked alternator 1;
[0031] At least one rectifier circuit 2 for converting alternating current into direct current, the output end of each rectifier circuit 2 is respectively connected with the opening coil or closing coil of the permanent magnet vacu...
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The present invention provides an emergency operation circuit for a permanent magnet vacuum circuit breaker. The circuit includes a hand-cranking type alternating-current generator, at least one rectification circuit, and a change-over switch; the rectification circuits are used for converting alternating current to direct current; the change-over switch is used for controlling the hand-cranking type alternating-current generator to be connected with or disconnected from one or more rectification circuits; the output end of each rectification circuit is connected with the switching-off coil orswitching-on coil of the permanent magnet vacuum circuit breaker; the input end of the change-over switch is connected with the hand-cranking type alternating-current generator; and the output end ofthe change-over switch is connected with the input end of each rectification circuit. With the emergency operation circuit for the permanent magnet vacuum circuit breaker provided by the invention adopted, external power sources are not required, and the emergency switching off or switching on action of the permanent magnet vacuum circuit breaker can be realized in a short time just through a hand-cranking power generation mode.
Description
technical field [0001] The invention relates to the technical field of permanent magnet vacuum circuit breakers, in particular to an emergency operation circuit for permanent magnet vacuum circuit breakers. Background technique [0002] With the rapid development of power system technology, permanent magnet vacuum circuit breakers have become the circuit breaker equipment with a large market share, and play a pivotal role in the power system. Due to the long-term operation of the permanent magnet vacuum circuit breaker in the harsh outdoor environment, problems such as the aging of the controller battery and the burning of parts have occurred from time to time. Once the controller fails, it will lead to the protection action of the permanent magnet vacuum circuit breaker or the refusal of the circuit breaker to open and close after manual opening, which will have a great impact on the length of power outage of electricity customers and the reliability of power supply of powe...
Claims
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IPC IPC(8): H01H33/666H02J9/04
CPCH02J9/04H01H33/666
Inventor宋泽均袁汉凯梁鹏翼何盛阳王周韩立海赵法强
OwnerSHENZHEN POWER SUPPLY BUREAU