Prediction device and method for remaining life of operating mechanism of circuit breaker

Abstract

The invention relates to a prediction device and a prediction method for the remaining life of an operating mechanism of a circuit breaker. The device comprises the circuit breaker, a signal collection device, a data collection module, a central processing unit, an industrial personal computer and a wireless communication module. Signals collected by the signal collection device are output to an input end of the data collection module, an output end of the data collection module is connected with a universal I / O (Input / Output) interface of the central processing unit, and an output end of the central processing unit is connected with an input end of the industrial personal computer and an input end of the wireless communication module. According to the method, the closing time of the circuit breaker, the coil voltage of an electromagnetic valve, the coil current of the electromagnetic valve, the number of use, the mechanical noise, the ambient pressure, the ambient temperature and the ambient humidity are directly measured to predict the service life of the circuit breaker by using the device, so as to avoid error caused by modeling and parameter selection by conventional methods. The time sequence generated by collection quantity is used as an input of the model so that the input quantity is simple and accurate to extract and the prediction efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, in particular to a device and method for predicting the remaining life of an operating mechanism of a circuit breaker. Background technique [0002] Relevant statistics show that more than half of the substation maintenance costs are spent on switches, and 60% of them are used for minor repairs and routine maintenance of circuit breakers; in addition, according to statistics, 10% of circuit breaker failures are due to incorrect maintenance. As a result, the overhaul of the circuit breaker is completely disassembled, which is time-consuming and expensive, up to 1 / 3-1 / 2 of the entire circuit breaker, and the disassembly and reassembly will cause many defects, and the resulting accident examples are even more The list goes on and on. It is still a controversial issue for which parts (or important components) of the circuit breaker and how long they need to be replaced. In fact, in the curr...

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Problems solved by technology

[0002] Relevant statistics show that more than half of the substation maintenance costs are spent on switches, and 60% of them are used for minor repairs and routine maintenance of circuit breakers; in addition, according to statistics, 10% of circuit breaker failures are due to incorrect maintenance. As a result, the overhaul of the circuit breaker is completely disassembled, which is time-consuming and expensive, up to 1 / 3-1 / 2 of the entire circuit breaker, and the disassembly and reassembly will cause many defects, and the resulting accident examples are even more Too many to list

Which parts (or important components) of the circuit breaker and how long they need to be replaced are still a controversial issue. In fact, in the current relatively conservative planned maintenance, it often happens that many parts still perform well when they are updated after many years of operation. , and due to failure to find out in time, a defect in a certain component will lead to power grid accidents from time to time

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