摘要
针对光伏发电与储能设备大量接入配电网,考虑多种电压无功资源协调的电压最优控制问题,该文研究“源-网-荷”互动模式下的含光伏发电与储能配电网最优电压控制策略。采用LQR理论,建立含光伏发电与储能配电网最优电压控制模型,并针对含光伏发电与储能配电网稳态运行点多变且模型和参数信息不完整或不精确的情况,引入ADP算法设计最优控制策略的在线计算方法。算例仿真表明,基于ADP的最优电压控制策略可以在配电网和分布式光伏的不同运行情况下取得良好的电压改善效果。因此该方法适用于电力系统在线控制应用。
Aiming at the photovoltaic generation and energy storage devices connected to the distribution network,considering the problem of voltage optimal control problem based on voltage and reactive power coordination,this paper studies the optimal voltage control strategy under“Source-Grid-Load”interaction.For photovoltaic power generation and energy storage distribution network,LQR-based optimal voltage control model is built.Then ADP-based online optimization method is proposed in order to deal with the variety of the steady-state operation points and the unknown or inaccurate model and parameters.Simulations are accomplished to verify the effectiveness of the proposed method under different operation conditions of the network.The results show that the proposed control law is effective in voltage improvement.Therefore the proposed method is beneficial to power system online control problems.
作者
肖安南
张蔚翔
张超
邓祖强
郑跃军
朱能富
XIAO Annan;ZHANG Weixiang;ZHANG Chao;DENG Zuqiang;ZHENG Yuejun;ZHU Nengfu(State Grid Anhui Electric Power Co., Ltd., Hefei 230061, China;Guodian Nari Technology Co., Ltd., Beijing 102200, China;Anhui Nari JiYuan Electric Power Grid Technology Co., Ltd., Hefei 230080, China)
出处
《电力科学与技术学报》
CAS
北大核心
2020年第2期120-127,共8页
Journal of Electric Power Science And Technology
基金
中国南方电网公司重点科技项目(K-SZ2013-906)。
关键词
配电网
光伏发电
电压安全
ADP
最优控制策略
“源-网-荷”互动
distribution network
photovoltaic generation
voltage security
ADP
optimal control strategy
“Source-Grid-Load”
