电力系统互感器的安全运行及故障处理中英文浅谈.docVIP

电力系统互感器的安全运行及故障处理中英文浅谈 　　电力系统中，电流、电压互感器安全运行十分重要。它们如同是电力系统中的眼睛和耳朵，电力系统运行是否正常运行，电量的计量都可以通过互感器的转换而显示出来。 In power system, is very important for safe operation of current, voltage transformer. They like is the power system of the eyes and ears, whether the normal operation of electric power system, electric energy measurement can be displayed through the conversion transformer. 　　一、互感器的正确使用　 The correct use of a, transformer 　1.1电流互感器使用（1）电流互感器的接线应遵守串联的原则，即一次绕组应与被测电路电路串联，二次绕组应与测量仪表或继电器的电流线圈串联。（2）电流互感器在工作时其二次侧严禁开路，一旦开路，一次电流全部化成为磁化电流，引起磁通和二次侧电压聚增，危及人身和设备安全：同时磁通磁路过度饱和磁化后，产生剩磁，降低准确度，使误差增大。因此电流互感器在安装时，二次接线要求牢靠，且不允许接入熔断器和开关。同时二次侧要备有短路开关，一旦开路，马上撤掉电路负载，然后再停电处理，一切处理完后，方可再用。（3）电流互感器的二次侧必须有一端可靠接地，防止一、二次绕组间绝缘击穿时，一次侧高压串入二次侧，危及人身和设备安全。（4）电流互感器在连接时，采用“减极性”即P1与S1、P2与S2为对应同名端，否则二次仪表、继电器中流过的电流就不是预想的电流甚至可能引起事故。（5）对大电流接地系统，一般按三相配置。对小电流接地系统，依具体要求按两相或三相配置。 1.1 use current transformer (1) wiring of current transformer shall comply with the principle of series, namely a winding should be connected in series with the measured circuit, two secondary windings should be current of coil and the measuring instrument or the relay series. (2) the current transformer in operation on the second side is open, once open circuit, a current all become the magnetization current, flux and two secondary side voltage caused by the increasing, endanger the personal safety and equipment: magnetic circuit saturation magnetization and magnetic flux of excessive, the remanence, reducing accuracy, the error increases. The current transformer is installed, the two wiring is firm, and does not allow access to the fuse and switch. At the same time, the two side to have a short, once open, immediately pulled the circuit load, and then cut processing, all after processing, can use. (3) the two side of the current transformer must end with reliable grounding, prevent the one or two winding insulation breakdown, one side high on two side, endanger the personal safety and equipment. (4) the current transformer in the connec