基于无功补偿设备的谐振过电压检测和抑制控制方法研究

为降低谐振引起的铁磁谐振过电压对电气设备的绝缘的损害程度，本文提出了一种基于配电网无功补偿设备的具有无功补偿和消谐功能一体化的新型配网装置及控制方法，通过MATLAB/Simulink仿真，验证该新型控制方法可以抑制谐振过电压，并通过搭建简易的配电网模拟线路和无功补偿设备，进一步分析得到在原本的无功补偿设备的基础上增加零序控制通路，即可向配电网注入一定频率和幅值的共模电压或共模电流，从而实现谐振过电压抑制功能。

Research on resonance overvoltage detection and suppression control method based on reactive power compensation equipment

In order to reduce the damage of the ferromagnetic resonance overvoltage caused by resonance to the insulation of electrical equipment, this paper proposes a new type of distribution network device and control based on the reactive power compensation device and the reactive power compensation and harmonic elimination function integration. The method, through MATLAB/Simulink simulation software, verifies that the new control method can suppress the resonant overvoltage, and further analyzes and draws the conclusion based on the original reactive power compensation equipment by constructing a simple distribution network analog line and reactive power compensation equipment. By adding a zero sequence control path, a common mode voltage or a common mode current of a certain frequency and amplitude can be injected into the distribution network, thereby realizing the resonance overvoltage suppression function.