基于H_∞滤波器的故障诊断滤波器在HVDC系统中的应用

Fault Diagnosis Filter for HVDC System Based on H_∞ Filter

主要研究和探讨基于H∞滤波器的故障诊断理论及其在超高压直流输电系统(HVDC)中的应用.首先介绍了H∞滤波器及其HVDC系统模型,并将其应用到HVDC系统中,分析了残差信号及其范数,对传输过程中一些常见故障进行诊断,通过仿真证明本文所设计的故障观测器不但对于故障信号比较敏感,并且对于干扰有较强的抑制能力,保持了一定的鲁棒性,提高了故障检测效果.

This article mainly investigates fault diagnosis filter for HVDC system based on H∞ filter. Firstly, it introduces H∞ filter and HVDC model. Then, by putting the filter into HVDC, we analysis the remnant signal and its pattern. Last, to some ordinary fault, we do some diagnosis. The simulation shows that this method can not only be sensitive to the fault signal, but also, can restrain the strong disturbance which keeps the robust and improves the diagnosis effect.