基于套管CCS的高压并联电抗器绕组故障检测方法研究

针对高压并联电抗器绕组故障检测的必要性和现有方法的不便捷性,提出一种基于套管电容耦合传感器的绕组故障检测方法。该方法依据脉冲频率响应法的基本原理,充分考虑了高压并联电抗器的结构特点,采取了套管耦合的方式实现信号的注入与测量。并联电抗器绕组故障的电路仿真,初步证实了检测方法的可行性。现场750 kV健康电抗器实验与故障模拟实验的测试分析,进一步证实了检测方法的可行性和有效性,为后续该方法的现场应用及在线应用推广奠定基础。

Study on winding fault detection method of high voltage shunt reactor based on bushing ccs

In the light of the necessity of detecting winding fault of HV shunt reactor, this paper proposes a winding fault detection method based on bushing capacitive coupling sensor. This method is based on the basic principle of impulse frequency response method, relies on the structural characteristic of HV shunt reactor, and adopts the coupling approach to realize the injection and measurement of signals. The electrical simulations of HV shunt reactor winding faults preliminary demonstrate the feasibility of detection method. The test analysis of field 750 kV healthy reactor experiment and fault emulation experiment, further indicate the feasibility and effectiveness of proposed detection method, laying the foundation for the field application of this method and the promotion of online application in the future.