24KV high-voltage vacuum breaker mechanical features on-line monitoring method and monitoring device

Abstract

The invention provides a 24kV high-voltage vacuum circuit breaker mechanical characteristic online monitoring method in which the mechanical characteristic parameters of the vacuum circuit breaker are gained by monitoring the closing and opening switch coil current characteristic curve and the stroke characteristic curve of a moving contact when the vacuum circuit breaker acts; a corresponding monitoring device comprises a DSP single chip microprocessor, a circuit breaker coil current monitoring module, a circuit breaker movable contact stroke monitoring module, a circuit breaker main circuit current monitoring module, and a GPRS communication module. Compared with the existing circuit breaker mechanical characteristic online monitoring method and the device, the online monitoring method and the device of the invention adopt advanced sensing technique, signal processing technique, wireless communication technique, and computer technique, etc., realizes outdoor high voltage vacuum circuit breaker online monitoring; the online monitoring method and the device also display the real-time opening and closing coil current characteristic curve and the stroke characteristic curve of the moving contact by monitoring data when the vacuum circuit breaker acts, and calculates the mechanical characteristic parameters such as the closing and opening switch time of the vacuum circuit breaker, action speed, stroke of movable contact, and opening distance, etc., and can conveniently analyze the monitoring results.

Description

technical field [0001] The invention relates to power protection equipment, in particular to an online monitoring method and a monitoring device for the mechanical characteristics of a 24kV high-voltage vacuum circuit breaker used in conjunction with a 24kV vacuum circuit breaker. Background technique [0002] With the rapid development of social economy and science and technology, urban and rural power grids have put forward higher and higher requirements for high-quality, high-reliability power supply, and gradually realize the distribution automation, electrification, and intelligence of urban and rural power grids to improve the entire distribution system. The social and economic benefits of the electrical energy and power supply reliability of the electrical system are very obvious. To this end, my country is currently investing huge sums of money in the construction and transformation of urban and rural power grids. With the sharp increase of power load in large and m...

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is that the existing monitoring methods and devices for the mechanical characteristics of high-voltage vacuum circuit breakers have disadvantages such as low degree of automation, large measurement errors, and weak functions, and most of them can only monitor one or several mechanical characteristics of the circuit breaker. parameters are monitored, the applicability of monitoring results and monitoring methods are still far from ideal

Images