【摘要】 变压器纵差保护作为变压器保护的主保护，要求它具有很高的可靠性、速动性、灵敏性和选择性，历年来纵差保护误动，总有电流互感器二次端子极性接反的事故教训．介绍一种非常实用的变压器纵差保护接线正确性的检查方法──六角图方法，给出实验原理及测试实例．该方法无论对常规变压器差动保护，还是对微机变压器差动保护的接线正确性检查均具有普遍意义．更多还原

【Abstract】 The main protection of transformer differential protection should have higher reliability, fastness, sensitivity and selectivity. For many years, one of causes of the differential protection maloperation is the current transformer’s secondary polarity’s wrong wiring. This paper introduces a very practical testing method of wiring correctness of transformer differential protection--the sixangle diagram method, the testing scheme and testing example are given in the paper. The method is valuable in applicability and popularity to the wiring correctness checking of general transformer differential protection or microprocessor-based protection.更多还原