Distributed arc light protection method and system

Abstract

The invention discloses a distributed arc light protection method and a distributed arc light protection system in the technical field of power system protection, which do not need to configure an additional arc light protection device, reduce the use amount of arc light acquisition optical fibers and the laying workload, reduce the construction difficulty and save the space and the cost. The system comprises incoming line comprehensive protection devices, feeder comprehensive protection devices and a segmented comprehensive protection device, wherein the segmented comprehensive protection device, the incoming line comprehensive protection devices and the feeder comprehensive protection devices communicate through an annular communication network; the feeder comprehensive protection devices and the segment comprehensive protection device respectively collect arc light signals generated at different positions of the interval, convert the collected arc light signals into switching values and then transmit the switching values to the incoming line comprehensive protection devices through the annular communication network. The incoming line comprehensive protection devices collect incoming line currents and generate tripping instructions according to the incoming line currents and the generation positions of the arc light signals, the tripping instructions are transmitted to the corresponding comprehensive protection devices, and the comprehensive protection devices receive and execute the tripping instructions.

Description

technical field [0001] The invention belongs to the technical field of power system protection, and in particular relates to a distributed arc protection method and system. Background technique [0002] The realization of load switching in 10~35kV medium and low voltage switchgear is closely related to the power consumption of industrial enterprises and civil power supply, and its importance is self-evident. Complete sets of switch cabinets are widely used in substations and factories and mines. Medium and low-voltage switchgears are compact in structure, and their insulation performance is worse than that of high-voltage electrical equipment. In addition to frequent operations and other external reasons, short-circuit faults in switchgears occur from time to time, and even serious accidents such as "burning and burning" may occur. The strong light, strong heat and explosion caused by the fault arc will cause great harm to the staff and equipment. [0003] The existing arc...

AI Technical Summary

Problems solved by technology

The strong light, strong heat and explosion caused by the fault arc will cause great harm to the staff and equipment

[0003] The existing arc light protection device collects the arc signal of each interval through the arc light collection fiber. The arc light collection fiber often needs to be wired between the cabinet and the cabinet body. , section switch and feeder interval switch, there are many tripping circuits, and the amount of cables and laying workload is very large

Moreover, the existing arc protection device may also need to be installed in groups of screens, occupying the space of the power distribution room

Images