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一、电容补偿的类型与容量确定近十几年来,厂矿电力系统中的电容补偿,强调采用以分散性的终端补偿为主,其次考虑以集中复式补偿为辅的方式。对于终端补偿,又有两种形式:一是并列在配电变压器二次母线上的复式补偿,一是并列在异步电动机端子上的简式补偿。至于集中补偿,是指并列在地而变电所主变压器二次母线(6000V)上的复式补偿。并列在异步电动机端子上的复式补偿没有必要,并列在变压器二次母线上的简式补偿缺点较多,不宜采用。电容补偿的类型如表1所示。并列在变压器二次母线上的电容补偿,如作简式接线,虽然可以与变压器同开关、共线路,但由于负载变动,容量不能合理地确定。在空载时变压器的补偿容量很小,参考西德VDEW规范,介绍如表2。
First, the type of capacitor compensation and capacity to determine the past decade, the plant power system capacitance compensation, emphasizing the use of decentralized terminal compensation based, followed by consideration of the way to focus on complex compensation. For terminal compensation, there are two forms: First, side by side in the distribution transformer secondary bus compensation, one is tied to the asynchronous motor terminals on the simple compensation. As for the centralized compensation, refers to the parallel and substation main transformer secondary bus (6000V) on the complex compensation. Tied together in the asynchronous motor terminal duplex compensation is not necessary, parallel to the secondary bus transformer shortcomings more disadvantages, should not be used. The type of capacitor compensation is shown in Table 1. Side by side in the transformer secondary bus capacitance compensation, such as for simple wiring, although with the transformer with the switch, a total of lines, but due to load changes, the capacity can not be reasonably determined. At no-load transformer compensation capacity is small, refer to the West Germany VDEW specification, introduced in Table 2.