发电厂和变电站中短路电流的限制措施

How to Restrain Short-circuit in Electric Power Plant and Sub-station

通过一个工程实例揭示出具有限流作用的配电网络(配电系统)与短路电流大小的关系,从而找出限制短路电流的规律。文章指出,限制短路电流的措施必须与所选择的配电网络相适应,短路电流大的应选择大的配电网络,短路电流小的应选择小的配电网络。如果配电网络选择得不当,就会给电力系统带来电压质量和潮流问题,满足不了规程规范对电压质量和潮流的要求。

The relationship between distribution system and value of short-circuit current is revealed by a engineering examples, and the way to restrain short-circuit current is found.The paper points out that the measurements must be adapted with value of short-circuit current.If improper distribution networks is selected, voltage quality and tide problem will cany on power system, then which don't meet the requirements of regulations.