中低压配电网的无功补偿

Reactive Power Compensation in Low and Medium Voltage Distribution Grid

随着社会的发展,我国工农业生产用电结构和规模都发生了显著变化,电力用户需要消耗大量无功,同时对供电质量的要求也越来越高。大量无功负荷直接从输电网络获得,不仅会造成配电网的损耗大大增加和功率因数过低,也会对电压质量产生严重影响,所以对中低压配电网进行无功补偿意义重大。笔者主要研究了中低压配电网无功补偿的原理、无功补偿装置在配电网中的应用及无功补偿应注意的问题。

With the development of society, the electricity consumption structure and scale for industry and agriculture in our country has significant changes. Power users need to consume a lot of reactive power and, at the same time, request more and more strict demands in the quality of power supply. To obtain bulk of reactive load directly from the power transmission grid not only causes significant increasement of loss and over low power factor of distribution grid, but also a serious effect on the quality of voltage, it is necessary to conduct reactive power compensation in low and medium voltage distribution grid. This paper mainly studies the principle of reactive power compensation, the application of the reactive power compensation equipment in low and medium voltage distribution grid, and some cautions in the reactive power compensation.