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主要对交流滤波器不平衡保护进行展开研究,分析计算电容过电压水平和不平衡电流的计算方法,详细对比不同厂家不平衡保护的基本原理以及差异,对提高不平衡保护的可靠性入手,提出应从完善保护的原理、优化保护算法和数字滤波方法的合理性、增强自适应补偿功能入手的观点与建议。
The paper mainly studies unbalance protection of AC filter, analyzes and calculates the calculation method of overvoltage and unbalanced current of capacitor, compares the basic principle and difference of imbalance protection of different manufacturers in detail, and starts with improving the reliability of unbalance protection We should improve the protection principle, optimize the protection algorithm and the rationality of the digital filtering method, enhance the adaptive compensation function to start with the views and suggestions.