无功补偿装置在提升功率因数和解决三相负荷不平衡方面的应用研究

Application of Reactive Power Compensation Device in Improving Power Factor and Solving Three-Phase Load Imbalance

随着电网的快速发展,三相不平衡度及功率因数偏低问题愈发严重。以补偿后系统不平衡度最小为优化目标,提出了智能低压电容器进行动态无功补偿的补偿策略,有效降低了配变三相不平衡度、提升了低压台区功率因数水平,降低了电网线路损耗。以湖北随州电网为实例,对两个低压台区进行了补偿及验证,三相不平衡度有了明显的降低,功率因数得到显著提升,验证了策略的正确性、有效性。

With the rapid development of power grid,the problems of three-phase load imbalance and low power factor are becoming more and more serious.This paper takes the minimum system imbalance degree after compensation as the optimization goal to put forward the compensation strategy of dynamic reactive power compensation for intelligent low-voltage capacitor,which effectively reduces the three-phase load imbalance degree of distribution transformer,improves the power factor level of low-voltage station area,and reduces the line loss of power grid.The paper also takes Hubei Suizhou power grid as an example to carry on compensation and verification for the two low-voltage station area,with the unbalancedness degree of three-phase load obviously reduced,the power factor significantly improved,and the correctness and effectiveness of the strategy verified.