Device for interlocking electronic high-voltage circuit breaker and high-voltage isolating switch

Abstract

The invention relates to a device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch, which comprises a high-voltage circuit breaker body, a high-voltage isolating switch body, a control unit and an interlocking unit, wherein the high-voltage circuit breaker body is provided with a leading-out terminal of a phase line and is used for switching off and switching on the phase line; the high-voltage isolating switch body is connected with the high-voltage circuit breaker body and is provided with a leading-in connecting block of the phase line; the control unit is used for detecting whether current passes through the circuit of the high-voltage circuit breaker body and / or the high-voltage isolating switch body and sending a control signal with a marking state; and the interlocking unit receives the control signal and interferes the state change of the high-voltage isolating switch body. Thus, when the high-voltage circuit breaker is in a switching-on state, the high-voltage isolating switch body can not perform switching-on and switching-off actions.

Description

technical field [0001] The invention relates to a high-voltage electric safety device, in particular to a device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch. Background technique [0002] Among the high-voltage power equipment used on high-voltage lines, the high-voltage isolation switch is a relatively important device with obvious segmental gaps. Therefore, it is mainly used to isolate high-voltage power supplies, ensure safe maintenance, and can switch certain small currents. It does not have a special arc extinguishing device, so it is not allowed to cut off the normal composite power supply, let alone cut off the short-circuit current. Because the disconnector has a clear section gap, it is usually used in conjunction with a high voltage circuit breaker. [0003] According to the place where the high-voltage isolating switch is used, the high-voltage isolating switch can be divided into two categories: indoor and outd...

AI Technical Summary

Problems solved by technology

[0004] However, during the configuration and operation of some equipment, the staff of the electric power department may sometimes fail to adopt a safe operation sequence for some reason, resulting in danger, that is, when the high-voltage circuit breaker is not in the disconnected state, it will be The high-voltage isolating switch is disconnected, thereby generating high-voltage arc light, which has caused great harm to the personal safety of power equipment and operators

[0005] At the same time, the existing high-voltage circuit breaker cannot handle the state of short-circuit fault in the power line from a functional point of view, so it is easy to burn out the corresponding electric equipment; Electrical equipment and high-voltage circuit breakers themselves cause great damage, and also affect the safety of electricity

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