工业中使用的中、低电压电网中的无功电流补偿具有一定的技术地位。在电力传输中如何考虑最小的损耗、最低的电压降和在导线截面一定时获得最大的有功功率都是很重要的,另外还需要考虑用电设备所产生的无功功率。 大多数电能用户,例如矿山井下广泛使用的异步电动机,除了有功功率外还附加了感应无功功率。这个感应无功功率可以由可调节的同步电动机或者电容器组提供补偿。只在少数情况下,感应无功功率才能直接由用电设备提供补偿。在通常情况下,应该尽量避免无功功率的远距离传 Industrial use of low voltage power grid reactive current compensation has a certain technical status. It is important to consider the minimum loss, the lowest voltage drop, and the maximum active power at a given cross section of the power transmission, as well as the reactive power generated by the powered device. Most power consumers, such as the widely used asynchronous motors in mine shafts, have an inductive reactive power added in addition to the active power. This inductive reactive power can be compensated by an adjustable synchronous motor or capacitor bank. Only in a few cases can inductive reactive power be compensated directly by consumers. Under normal circumstances, should try to avoid long-distance transmission of reactive power