研究中低压配电网优化问题,针对感性负载和负载的不平衡造成电网损耗大、功率因数低等缺欠,传统的补偿装置往往只适用于三相三线制配电网或不能兼顾无功补偿和三相不平衡的校正.提出设计一种既适合三相三线制配电网又适用于三相四线制的中低压配电网不平衡无功补偿系统.运用新型无功补偿算法计算无功补偿量,再利用模糊控制器控制复合开关来实现电容投切.并通过MATLAB仿真证实设计的补偿系统既可以有效的校正三相不平衡又可以对系统无功功率进行补偿,为优化提供了参考.%In the medium-low voltage distribution networks, the inductive load and the load imbalance cause great loss of power and low power factor problem. Traditional compensation devices are only applicable to three -phase three -wire distribution system, or can not take into account reactive power compensation and three-phase unbalance correction. This paper designed a medium-low voltage distribution network in the unbalanced of reactivepower compensation systems, that suited both the three-phase three-wire and the three-phase four-wire system. The system used the new algorithm to calculate the amount of reactive power compensation, and combined the fuzzy controller to achieve the capacitor switching switch. And the MATLAB simulation and experiment show that the basic principle and method is totally feasible and effectual.
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