电力系统自动化2017，Vol.41Issue(23)：89-95,7.DOI:10.7500/AEPS20170118014
基于模糊逻辑的低压配电网高比例户用光伏无功控制策略
Fuzzy Logic Based Reactive Power Control Strategy for Low-voltage Distribution Networks with High Proportion of Residential Photovoltaic Power
摘要
Abstract
In order to solve the problem of voltage limit violation and voltage fluctuation caused by the high-proportion residential photovoltaic(PV)power integrated into low-voltage distribution networks,and reduce the network operation risk,a residential PV reactive power control strategy based on Mamdani fuzzy inference is proposed.The strategy uses the voltage excursion and PV active power variation rate as two inputs to adapt to voltage limit violation and voltage fluctuation scenarios, respectively.Fuzzy rules are developed according to the logical relationship between the input and the output of inverter reactive power.Then the reactive power output of the PV inverter is obtained via the defuzzification process.The parameters of the fuzzy triangular membership functions of different buses are coordinated and designed based on the voltage sensitivity theory. Therefore,an effective utilization of reactive power capacity of residential PV inverters can be achieved.Finally,the simulation results show that the proposed strategy can effectively mitigate the voltage limit violation and voltage fluctuation.In contrast with the conventional reactive power droop control of inverters,the voltage limit violation and voltage fluctuation are effectively suppressed.关键词
低压配电网/户用光伏消纳/模糊控制/电压越限/电压波动Key words
low-voltage distribution network/residential photovoltaic consumption/fuzzy control/voltage limit violation/voltage fluctuation引用本文复制引用
徐鸥洋,唐巍,蔡永翔,盛万兴,寇凌峰..基于模糊逻辑的低压配电网高比例户用光伏无功控制策略[J].电力系统自动化,2017,41(23):89-95,7.基金项目
国家电网公司科技项目"提高光伏扶贫地区电网消纳能力与保障技术的研究与应用".This work is supported by State Grid Corporation of China. （）
