Emergency opening system of 10-kV switch cabinet and operation method thereof

Abstract

The invention provides an emergency opening system of 10-kV switch cabinet and an operation method thereof. According to the system, the operator can complete isolation work of a fault circuit breaker in a safety region far away from the circuit breaker, so that the personal risk can be greatly reduced. Emergency opening of a fault circuit breaker is realized by using the system and thus the fault circuit breaker can be isolated rapidly; and compared with the previous way of isolating a fault circuit breaker by stopping a bus, the provided system enables lots of manpower and time to be saved. Because of emergency opening of a fault circuit breaker by using the system, the failure outage range is minimized and the power supply reliability is enhanced. Moreover, the equipment size is small, the weight is light, installation and usage become simple and convenient, the work efficiency is improved, and the time and labor costs are reduced. The air pump used for gas compression can be driven by a portable power supply, so that field external connection of a power supply can be saved and thus the usage efficiency can be improved. The system with high adaptability is suitable for all types of 10-kV switch cabinets in an area under jurisdiction.

Description

technical field [0001] The invention relates to the field of high-voltage switching equipment, and more specifically, to an emergency switching system for a 10kV switchgear and an operating method thereof. Background technique [0002] The disconnection of the 10kV circuit breaker control circuit is an emergency defect, which directly causes the circuit breaker to fail to perform normal opening and closing operations. When the power grid fails, the fault circuit breaker cannot normally cut off the fault, which will cause the scope of the accident to expand and affect the safety of the power grid and the power supply of users. [0003] At present, there are mainly two methods for dealing with disconnection of the control circuit of the circuit breaker. The first is that the operator manually operates the emergency release button of the circuit breaker on site. This method is extremely risky. If the operator explodes in the switchgear during the operation, it will directly ca...

AI Technical Summary

Problems solved by technology

The first is that the operator manually operates the emergency release button of the circuit breaker on site. This method is extremely risky. If the operator explodes in the switchgear during the operation, it will directly cause personal injury. This method It is not advisable; the second is to stop the superior busbar isolation fault circuit breaker. Although this method controls the operation risk, it affects the normal power supply of the substation, causing tens of thousands of users to be forced to cut off power, and this method involves load transfer and operation problems, on-site operation risks are transferred to other operational risks, and at the same time affect the reliability of power supply

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