Reactive Power Optimization Method for Distribution Network Considering DG, DS and EV Cooperative Operation

doi:10.11985/2017.08.007

Abstract

Abstract:

A reactive power optimization model is presented considering operation coordination of distributed generation, electric vehicle charging and distributed storage systems, and coordinative control of DG, DS, EV and other different types of reactive power compensation devices in power distribution network. In the proposed model, power loss and voltage fluctuation minimization is taken as the objective function. Considering the probabilistic characteristics of wind speed, the uncertainty of sunshine intensity, charge state and charge discharge characteristics,and the operation efficiency, a stochastic probabilistic model is constructed for power output of distributed wind turbine power output of PV system, charging and discharging power of electric vehicle, and charging and discharging power of energy storage device. The reactive power of DG, DS and EV is chosen as control variable, and genetic algorithm is used to solve the optimization problem. The simulation results show the adaptability of the proposed reactive power optimization model, and the feasibility and effectiveness of the proposed algorithm.

Key words: Distribution grids with renewable energy, reactive power optimization, coordinative operation of DG、DS and EV, reactive power compensation devices

CLC Number:

TM315

Chen Jiawei,Wu Jiekang,Guo Qingyuan,Zhao Shouan,Xu Honghai. Reactive Power Optimization Method for Distribution Network Considering DG, DS and EV Cooperative Operation[J]. Journal of Electrical Engineering, 2017, 12(8): 42-49.

Figures/Tables 3

References 30

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控制变量	最优值
无功补偿/kvar	309.7
储能放电（节点3）/kW	26
储能放电（节点26）/kW	29
电动汽车放电（节点3）/kW	38.7
电动汽车放电（节点26）/kW	48.4
DG无功输出（节点3）/kvar	154.8
DG无功输出（节点26）/kvar	206.5