基于二阶锥凸松弛的海上风电场内部无功优化  

Internal Reactive Power Optimization of Offshore Wind Farms Using Second-Order Cone Convex Relaxation

作　　者：张磊 姜贞强 倪佳华 周胡 陆艳艳 项基[2] ZHANG Lei;JIANG Zhenqiang;NI Jiahua;ZHOU Hu;LU Yanyan;XIANG Ji(PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,杭州市311122 [2]浙江大学电气工程学院,杭州市310027

出　　处：《电力建设》2024年第1期92-101,共10页Electric Power Construction

基　　金：国家自然科学基金项目(62173295)。

摘　　要：为了减少海上风电场有功网损,提出一种基于二阶锥凸松弛的海上风电场无功出力优化模型。该模型考虑最优潮流过程中所涉及的电网稳定要求与安全裕度,在各风机最大化有功出力的前提下,优化各风机无功出力,以减少网损,提高风场整体出力。通过二阶锥凸松弛的数学优化方法,解决多种约束下的潮流优化问题,给出了最大化风电场整体有功出力下的各风机无功出力最优值。最后,以舟山普陀海上风电场为例,对各机组无功出力进行了优化,并与基于启发式的粒子群优化算法和经典的内点法优化算法进行了对比,结果表明所提算法能明显减少系统有功损耗,提升风电场整体有功出力。This paper proposes a reactive power optimization model for offshore wind farms based on second-order cone convex relaxation for reducing active network loss.The model considers the grid stability requirements and safety margin involved in the optimal power flow process and optimizes the reactive power output of each turbine to maximize the active power output,reduce the network loss,and improve the overall power output of a wind farm.Through mathematical optimization of the second-order cone convex relaxation,the power flow is improved,the line active power loss is reduced,and the power-flow optimization problem under various constraints is solved.Finally,with the Zhoushan Putuo wind farm as an example,the reactive power output of each wind turbine is optimized and compared with the results of heuristic particle swarm optimization and the classical interior-point optimization algorithm.The comparison shows that the proposed method can significantly reduce active power loss and improve the overall active power output of the wind farm.

关 键 词：海上风电场 无功优化 最优潮流 凸优化 

分 类 号：TM73[电气工程—电力系统及自动化]