综合配网谐波及三相不平衡评价指标的治理设备优化配置策略

Power quality control devices represented by active power filter are mostly used to compensate harmonic and unbalanced current generated by local loads. With the massive access of non-linear loads in the distribution network, the local compensation configuration strategy becomes expensive and inefficient. Therefore, the device configuration strategy for global improvement of network power quality is necessary. Firstly, a global evaluation strategy for power quality indices based on analytic hierarchy process is proposed to evaluate the configuration effects of control devices. Secondly, taking the global configuration effects, the total number and capacity of control devices as the optimization goals, and regarding the harmonic distortions and unbalance degrees of the nodes satisfying the standard as the constraint condition, the optimal configuration node and capacity of each device is determined by multi-objective particle swarm algorithm. Finally, an IEEE-18 node simulation model with non-ideal loads is built to verify the effectiveness and superiority of the proposed global evaluation and power quality control device configuration strategy for the comprehensive optimization of network harmonic and unbalance voltage. This work is supported by the Science and Technology Project of SGCC (Research on Flexible and Comprehensive Control of Regional Distributed Network for High Quality Power Supply, No.52110418000S) and National Natural Science Foundation of China (Terminal Impedance Based Research about Dynamic Interactions Between Active Power Filter (APF) and Its Source-Load System, No.51977172).