Method for detecting half-wave current transformation error of current transformer

The invention discloses a method for detecting a half-wave current transformation error of a current transformer. The method is characterized in that based on a detecting circuit of the traditional current transformer, two diodes, namely a positive diode and a negative diode, with a forward on circuit greater than a rated current of the current transformer are respectively serially connected with two sample current transformers to form a positive half-wave current transformation and a negative half-wave current transformation, the two half-wave current transformers which are symmetric are serially connected to form a full-wave current transformer for measuring the error, and the measured error is the error of the half-wave current transformers. According to the method for detecting the half-wave current transformation error of the current transformer, the transformation error of the current transformer under a half-wave current can be detected by utilizing traditional current transformer verification devices such as an alternating current booster, a standard current transformer, a mutual inductor calibrator, a load box and the like. The method has the advantages of simpleness, low cost, scientificalness, practicability, high maneuverability, low cost and the like, and is suitable for the technical field of measurement accuracy of a direct-current resisting component of the current transformer.