多光伏电站接入风光火耦合系统选址优化  

Multi-photovoltaic power plants connected to the landscape and fire coupling system site selection optimization

作　　者：张强 李胜辉 王晓东[2] 赵清松 Zhang Qiang;Li Shenghui;Wang Xiaodong;Zhao Qingsong(Electric Power Research Institute of State Grid Liaoning Electric Power Co.,LTD.,Shenyang 110006,China;School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]沈阳工业大学电气工程学院,辽宁沈阳110870

出　　处：《可再生能源》2024年第6期804-811,共8页Renewable Energy Resources

基　　金：国家重点研发计划项目(2019YFB1505400)。

摘　　要：可再生能源机组出力的波动性及并网位置的不合理,导致耦合系统电压波动、功率偏差及投资成本的增加。针对风光火耦合系统选址优化调节需求,文章提出一种基于离散粒子群的多光伏电源接入选址优化方法。分析了光伏电源的无功补偿特性及其接入位置对系统电压偏差及网损的影响,建立了可再生能源与火电耦合的发电系统模型,并将光伏电源作为耦合系统的无功调节装置。以电压偏差和线路损耗综合最优为目标函数,采用离散粒子群算法对光伏电源接入点进行求解,算例分析结果表明,多光伏电站接入点优化方法保障了各节点电压偏差,减少了线路损耗,进而提高了风光火耦合系统的安全稳定性。The fluctuation of renewable energy unit output and the unreasonable grid connection position lead to voltage fluctuations,power deviation,and increased investment costs in the coupled system.A discrete particle swarm optimization method for multi photovoltaic power supply access site selection is proposed to meet the optimization and regulation requirements of wind solar thermal coupling system.Analyzed the reactive power compensation characteristics of photovoltaic power sources and the impact of their connection positions on system voltage deviation and grid losses,established a power generation system model that couples renewable energy and thermal power,and used photovoltaic power sources as reactive power regulation devices for the coupled system.Taking the comprehensive optimization of voltage deviation and line loss as the objective function,the discrete particle swarm optimization algorithm is used to solve the photovoltaic power supply access point.The analysis results of the example show that the multi photovoltaic power station access point optimization method ensures the voltage deviation of each node,reduces line loss,and improves the safety and stability of the wind solar thermal coupling system.

关 键 词：可再生能源 无功补偿 电压偏差 线路损耗 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程] TK51