考虑风荷不确定性的电源无功电压调差系数整定方法研究  

Optimization Method for Var-voltage Adjustment Coefficient Considering Wind Power and Load Uncertainty

作　　者：安军[1] 周永超 周毅博 赵聚乐 AN Jun;ZHOU Yongchao;ZHOU Yibo;ZHAO Jule(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin Jilin 132012)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林132012

出　　处：《东北电力大学学报》2023年第4期30-38,共9页Journal of Northeast Electric Power University

基　　金：吉林省科技发展计划项目(20220508150RC)。

摘　　要：随着风电场并网容量的不断增长,作为主要无功来源的火电机组将被大量取代,电网无功电压问题日益凸显,风电场为电网提供无功辅助服务已经成为发展趋势。无功电压调差系数是风电场与火电机组响应电网无功电压变化的重要参数,对其合理整定对保证电网电压水平具有重要意义。文中在计及风电出力与负荷不确定性的基础上,建立了以改善电网电压水平为目标,考虑电网运行约束的电源无功电压调差系数整定模型,并采用鲸鱼群算法对模型进行求解。对基于IEEE-39节点系统构建的高风电渗透系统进行仿真,结果表明各电源采用整定后的无功电压调差系数,电网电压越限概率减小、电压波动水平降低。With the growth of the grid-connected capacity of wind farms,thermal power units,as the main source of reactive power,have been heavily replaced.The problem of reactive power and voltage in the power grid has become increasingly prominent.It has become a development trend for wind farms to provide reactive power auxiliary services for the power grid.The var-voltage adjustment coefficient is an important parameter for wind farms and thermal power units to respond to the changes of reactive power and voltage in the power grid,and its reasonable setting is of great significance to ensure the voltage level of the power grid.Based on considering the uncertainty of wind power output and load,this paper establishes an optimal model for the var-voltage adjustment coefficient of the power source,which aims to improve the grid voltage level and considers the grid operation constraints,and uses the WOA to solve the model.The simulation of the high wind power proportion system based on the IEEE-39 bus system shows that the probability of voltage out of limit and the level of voltage fluctuation are reduced by using the optimized var-voltage adjustment coefficient.

关 键 词：风电场 不确定性 电压水平 无功电压调差系数 优化整定 

分 类 号：TM732[电气工程—电力系统及自动化]