Power supply module fault monitoring device, monitoring system and monitoring method of secondary system of switch equipment

Abstract

The invention discloses a power supply module fault monitoring device of a secondary system of switch equipment. The device includes a signal collection module, a decision module and a communication module. An output of the signal collection module is electrically connected with an input end of the decision module. An output end of the decision module is electrically connected with an input end ofthe communication module. The signal collection module is disposed on a power supply module of the secondary system to collect a voltage signal of the power supply module, and transmit the voltage signal to the decision module. The decision module generates a real-time voltage value according to the voltage signal. The decision module also provided with a low-voltage threshold, compares the real-time voltage value with the low-voltage threshold, When the fact that the real-time voltage value is lower than the low-voltage threshold is obtained by comparison, the decision module generates an abnormal warning signal, and transmits the abnormal warning signal to a remote receiving module through the communication module to remind monitoring personnel of viewing an abnormal situation. The invention also provides a power supply module fault monitoring system of the secondary system of the switch equipment.

Description

technical field [0001] The invention relates to the technical field of electric power equipment, in particular to a power supply module fault monitoring device and system of a secondary system of a switchgear. Background technique [0002] The primary system is the circuit through which the current passes when the power is transmitted from the power source to the load. The various electrical equipment in the primary system are called primary equipment, which include various switchgear, circuit breakers, contactors, fuses and electrical equipment. The auxiliary system is also called the secondary system, which is a circuit that controls, protects, monitors, and measures the primary system. Switchgear in the primary system also requires protection in the secondary system. The secondary system is powered by the power module. [0003] Switchgear is mainly used to break and close the electrical appliances of the conductive circuit. It is a general term for high-voltage switche...

AI Technical Summary

Problems solved by technology

With the replacement or addition of on-column switches and the extension of the running time of the ring main unit, many secondary system power failures have occurred

If the secondary system loses power, the secondary setting and operating data cannot be viewed, and it will also cause the circuit breaker to refuse to operate

According to statistics, the failure of the switch on the column and the power module of the ring network cabinet is an important reason for the power failure of the secondary system

The traditional inspection period of each ring network cabinet and switch distribution equipment on the column is one month, which makes it impossible for the operation management unit to know the failure of the power module of each switch on the column and ring network cabinet at the first time, which makes many operating equipment There is a possibility of sick operation, which cannot meet the requirements of safe operation

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