Capacitor monitoring system

Abstract

The invention discloses a capacitor monitoring system, which includes a monitoring center, a controller, a circuit breaker, a pressure sensor, a buzzer, and a capacitor. The monitoring center includes a computer and a data receiver. The pressure sensor is arranged inside the capacitor. The sensor is connected to the controller, the controller is connected to the circuit breaker and the buzzer respectively, the circuit breaker and the capacitor are connected in series to the main circuit, and a current sensor is connected in series on the circuit between the circuit breaker and the capacitor. The current sensor is connected with the signal collector, the signal collector is connected with the data receiver of the monitoring center through data transmission, and the data receiver is connected with the computer. The invention not only has the explosion-proof function, but also sends out an alarm at the monitoring center and the location of the damaged capacitor when the capacitor fails, so as to accurately locate and improve the maintenance efficiency.

Description

technical field [0001] The invention relates to the field of capacitors, in particular to a capacitor monitoring system. Background technique [0002] Due to the advantages of high power density, long cycle life and fast charging speed, metallized film capacitors have broad application prospects in various fields such as mobile communications, electric tools, solar power generation, wind power generation, information technology and electric vehicles. [0003] Metallized film capacitors, especially large-capacity capacitors, are in high-current charging and discharging operations, especially in high-temperature working environments. Due to the chemical reaction, electrochemical reaction and high-temperature evaporation inside the capacitor, gas will be generated inside the supercapacitor. There will be more and more gas in the sealed state, which will gradually increase the pressure inside the capacitor, and eventually cause the explosion-proof groove on the capacitor shell t...

AI Technical Summary

Problems solved by technology

[0003] Metallized film capacitors, especially large-capacity capacitors, are in high-current charging and discharging operations, especially in high-temperature working environments. Due to the chemical reaction, electrochemical reaction and high-temperature evaporation inside the capacitor, gas will be generated inside the supercapacitor. There will be more and more gas in the sealed state, which will gradually increase the pressure inside the capacitor, and eventually cause the explosion-proof groove on the capacitor shell to rupture, which will not only damage the capacitor, but also increase potential safety hazards, which may easily cause fire or explosion major safety accidents

[0004] In addition, when the capacitor is damaged and a power failure occurs, maintenance personnel cannot quickly and timely locate the damaged capacitor, reducing the efficiency of maintenance and replacement, and virtually prolonging the power failure time

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