Handling of faulty power capacitors should be performed after disconnecting the capacitor's circuit breaker, opening the two disconnectors of the circuit breaker, and discharging the capacitor bank through the discharge resistor. After the capacitor bank is discharged by the discharge resistor (discharge transformer or discharge voltage transformer), because some of the residual charge can not be discharged for a while, an artificial discharge should still be performed. When discharging, first connect the ground terminal of the ground wire, and then discharge the capacitor with the ground rod for several times until there is no discharge spark or sound, and then fix the ground terminal. Because the fault capacitor may have poor lead contact, internal disconnection or fuse blowout, etc., some of the charge may not be exhausted. Therefore, before touching the fault capacitor, the maintenance personnel should also wear insulating gloves and use short-circuit wires to connect the fault power. The two poles of the capacitor are shorted, and then they are manually removed and replaced. Discharge should also be performed separately on the neutral line of a double star-connected capacitor bank and on the series connection of multiple capacitors. Summary: Capacitors are relatively weak electrical appliances in various equipment of substations and substations. They have weaker insulation than other equipment of the same voltage, internal components generate more heat, and the heat dissipation is poor. The chance of internal failure is relatively low. There are many flammable materials in the internal materials of the power capacitors, so it is easy to catch fire during operation. Therefore, the operation of power capacitors should create good low temperature and ventilation conditions as much as possible.

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The basic principle of an electrical fire monitoring system is that when the parameters such as current and temperature in electrical equipment are abnormal or abrupt, the terminal probes (such as residual current transformers, temperature sensors, etc.) use the electromagnetic field induction principle and changes in temperature effects to this information. Collect and send it to the monitoring detector. After amplification, A / D conversion, CPU analyzes and judges the amplitude of the change, and compares it with the alarm set value. Once it exceeds the set value, it sends an alarm signal, and at the same time It is also sent to the monitoring equipment, which is further identified and judged by the monitoring equipment. When it is confirmed that a fire may occur, the monitoring host sends out a fire alarm signal, lights up the alarm indicator, sounds an alarm, and displays a fire alarm on the LCD screen. And other information. The staff on duty will quickly go to the accident site for inspection and processing based on the information displayed above, and send the alarm information to the centralized console.