配电网三相不平衡补偿优化措施的可行性

Feasibility Study of Three Phase Imbalance Compensation Optimization for Distribution Network

电力系统无功功率补偿不足将引起功率因数下降,而三相功率不平衡则会影响到各种用电设备的安全。在低压配电系统中,三相不对称的问题越来越严重,基于无功补偿原理,本文从经典瞬时无功理论方面推导验证了采用电容电感元件综合经济补偿三相不平衡的可行性,提出了一种矢量分析方法,基于此方法采取数值逼近算法求解,并对实际情况的场合参数进行测量计算,MATLAB仿真结果表明,此方法是有效的。

The power factor of power system will be decreased by under-compensation of reactive power, and it is harmful for the devices of customers while the power in the three phases are unbalanced. The problems of three-phase asymmetric become more and more serious in low- voltage power distribution system. Based on the principle of reactive power compensation, this paper presents a new method of vector analysis. Based on this method, a digital approximation method is proposed. The simulation results show that this method is effective.