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新疆某水电站装有4台单机容量为80 MW的立轴混流式水轮发电机组。采用发电机与变压器组成带有发电机断路器的单元接线,装置2台容量为100 MVA的220 kV双卷主变压器和2台容量为100 MVA的220 kV三卷主变压器。电流互感器是利用变压器原理进行变换电流的一次电气设备,它的主要作用是将高压小电流和低压大电流变成低压小电流,因而在电力系统中得到了广泛的应用。重点阐述了电流互感器基本原理,电流互感器二次回路现场试验原则及使用注意事项。
A hydropower station in Xinjiang is equipped with 4 vertical shaft Francis turbine units with a single unit capacity of 80MW. The unit wiring with generator breaker is composed of generator and transformer. The installation consists of two 220kV double-winding main transformers with capacity of 100 MVA and two 220kV three-coil main transformers with capacity of 100 MVA. Current transformer is the use of transformer principle of the current transformation of the primary electrical equipment, its main role is to convert high-voltage low-current and low-voltage high-current small current, which in the power system has been widely used. Focus on the basic principles of current transformer, current transformer secondary circuit field test principles and precautions.