Gaoya dianqi电网中光伏风电等新能源的接入比例不断提高，由于新能源的间歇性和宽量程负荷变化特性，使得并网点处呈现出电流宽范围的特性。传统的电磁式电流互感器对宽范围电流的测量将产生较大的误差。针对励磁电流是影响电流互感器传变精度的主要因素，文中提出一种基于复合铁心的零磁通电流互感器结构。该电流互感器以复合铁心作为主铁心，设置辅助铁心和补偿绕组对电流互感器进行无源补偿，使主铁心工作在近似零磁通状态，减小电流互感器的传变误差，拓宽电流互感器的量程。通过分析该电流互感器的误差传递函数，并利用有限元仿真软件进行仿真 ...
张鼎衢 +7 more
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