Research of Monitoring System of Ultra - high Voltage Shunt Capacitor

摘要

Shunt capacitor bank on the 110kV side of ultra-high voltage (UHV) substation is mainly used for reactive power compensation and is an important part of UHV transmission system. Its normal and abnormal operation directly affects the safe operation of UHV substation. Therefore, it is of great practical significance to monitor the shunt capacitor bank on the 110kV side of UHV substation and obtain its running status in time. A real-time monitoring system of shunt capacitor bank on the 110kV side of UHV substation is developed based on the deep analysis of various operating conditions of shunt capacitor bank on the 110kV side of UHV substation. A monitoring system is developed to monitor the operation status of the shunt capacitors on the 110kV side of UHV substation in real time. The system provides the basis for further analyzing the operation status of the capacitor by measuring the current signal of single capacitor and detecting and analyzing the power frequency current and harmonic components in the current signal and recording current waveform.