GPRS-based research in control strategy for distribution network reactive power optimization

CHEN Meng-wei1， ZHANG Jian-min1，2， XV Qian3， WU Xin-miao1， YE Yi1
（1. School of Automation， Hangzhou Dianzi University， Hangzhou 310018， China；
2. Creaway Automation Engineering Co. Ltd.， Hangzhou 310012， China；
3. Zhejiang Research Institute of Economic Technology， Hangzhou 310007， China）

Abstract： Reactive power control in distribution system is an important and effective method to make the power loss less and voltage condition better. Dynamic reactive power optimization solution generally is taken reasonable section optimization in accordance with the day short-term forecast load curve，that is the dynamic reactive power optimization is transformed into the multi-period static reactive power optimization problems. Aiming at the actual load's irregular change resulting in reactive power over compensation and owe compensation problem on the distribution network，a kind of the dynamic reactive power optimization of hybrid control strategy was proposed based on the real-time measured data and the prediction data. Secondly，in order to improve the distribution network reactive power optimization calculation speed，make optimization algorithm better applicable to the actual on-line environment，ordinal optimization theory framework was introduced，improved tabu search algorithm was taken as reactive power optimization. Through 34-node distribution system study，the results indicate that the proposed control strategy is practicable feasible and its calculation speed is fast.
Key words： distribution network； dynamic reactive-power optimization； action number constraint ；general packet radio service（GPRS）；control strategy