研究了直流输电工程中交流滤波器的避雷器参数选择。依据滤波器各元件上的谐波频谱，使用带一定裕度的谐波叠加算法计算了最大持续运行电压，确定保护滤波器的避雷器参考电压。利用PSCAD建立滤波器暂态模型，研究了操作过电压和接地故障下避雷器的保护水平。最终确定了避雷器的技术参数要求。%The parameters configuration of AC filter’s arrester in HVDC project is studied. According to the harmonic frequency of each elements of filter, the paper calculates the maximum continuous operating voltage by harmonic superposition algorithm with a certain margin to determine the filter arresters’ reference voltage. And by establishing the filter’s transient model with PSCAD, the lightning impulse protective level and switching impulse protective level of arresters under switching over-voltage and grounding fault are studied.The technical parameters of arresters can be finally determined.
展开▼
