Multi-objective optimal power flow for active distribution network considering the stochastic characteristic of photovoltaic

7th International Conference on Environment and Industrial Innovation

生态环境科学;工业技术

Zhou, Bao-Rong^1 ; Liu, Si-Liang^2 ; Zhang, Yong-Jun^2 ; Yi, Ying-Qi^2 ; Lin, Xiao-Ming^2

Technology Research Center of China Southern Power Grid Co.Ltd, Guangzhou, China^1

School of Electrical Power South China, University of Technology, Guangzhou, China^2

关键词: Active distribution networks;    Energy storage systems;    Multi-objective optimal power flow;    NSGA-II algorithm;    Pareto optimal solutions;    Probabilistic power flow;    Regulation capability;    Stochastic characteristic;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/67/1/012015/pdf
DOI  :  10.1088/1755-1315/67/1/012015

来源: IOP

【 摘 要 】

To mitigate the impact on the distribution networks caused by the stochastic characteristic and high penetration of photovoltaic, a multi-objective optimal power flow model is proposed in this paper. The regulation capability of capacitor, inverter of photovoltaic and energy storage system embedded in active distribution network are considered to minimize the expected value of active power the T loss and probability of voltage violation in this model. Firstly, a probabilistic power flow based on cumulant method is introduced to calculate the value of the objectives. Secondly, NSGA-II algorithm is adopted for optimization to obtain the Pareto optimal solutions. Finally, the best compromise solution can be achieved through fuzzy membership degree method. By the multi-objective optimization calculation of IEEE34-node distribution network, the results show that the model can effectively improve the voltage security and economy of the distribution network on different levels of photovoltaic penetration.