110kV变电站并联电容器装置谐波谐振分析与对策

Analysis and Solutions for the Harmonic Resonance Caused by Parallel Capacitor Devices in the 110kV Substation

并联电容器装置串联电抗率配置不合理,容易造成电网的谐波放大甚至谐振,对电网安全经济运行造成了威胁。通过对某110k V变电站投运过程中发生的谐波放大及谐振现象的机理分析,同时结合现场测试数据验证,提出了改进的措施与方案,并对方案的可行性进行了校核,提出了设计阶段应开展并联电容器装置串联电抗率校核的建议。

Unreasonable parallel capacitor device series reactance rate configuration, can easily cause harmonic amplification or even resonance of the power grid, influencing the safety and economic operation of the grid. Based on the analysis of the harmonic amplification and resonance phenomena occurring during the operation of a 110kV substation and the verification of the field test data, improved measures and schemes are put forward, and the feasibility of the scheme is checked. The suggestion of checking the series reactance rate of shunt capacitor during design stage is put forward.