考虑调相机的风电场稳态-暂态无功协同优化控制  

Steady State-Transient State Reactive Power Cooperative Optimization Control of Wind Farm Considering Synchronous Condensers

作　　者：赵天骐 郭金鹏 张海燕 王宣元 谢欢 潘学萍[2] ZHAO Tianqi;GUO Jinpeng;ZHANG Haiyan;WANG Xuanyuan;XIE Huan;PAN Xueping(State Grid Jibei Electric Power Research Institute(Flexible Resource-Network-Demand-Storage Co-operation and Control Laboratory),Beijing 100045,China;School of Electrical and Power Engineering,Hohai University,Nanjing 211106,China;Power Dispatch and Control Center of State Grid Jibei Electric Power Co.,Ltd.,Beijing 100054,China)

机构地区：[1]国网冀北电力有限公司电力科学研究院(源网荷储灵活运行与协调控制国家电网公司实验室),北京市100045 [2]河海大学电气与动力工程学院,江苏省南京市211106 [3]国网冀北电力有限公司电力调控中心,北京市100054

出　　处：《电力系统自动化》2024年第24期54-65,共12页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(52477089,52407094);国网冀北电力有限公司科技项目(含新型同步调相机的构网型新能源场站协调控制技术研究,B3018K240005)。

摘　　要：风电场对电网电压的支撑能力薄弱,送出功率波动容易造成并网点电压稳定问题,可通过配置分布式调相机来提升系统电压稳定性。然而,分布式调相机的稳态无功出力会影响其暂态性能,同时会影响风电场的稳态电压安全和网络损耗,导致风电场的稳态-暂态无功协同困难。在此背景下,提出考虑风电机组、电容器以及分布式调相机的风电场稳态-暂态无功协同优化控制策略。首先,以提高系统电压安全裕度和减小风电场网络损耗为目标,设计了典型场景下风电场的稳态无功优化控制策略。其次,分析了不同故障程度下调相机稳态出力对暂态性能的影响;以提升预想故障集下系统暂态电压响应最低点和电压恢复指标为暂态优化目标,在计及稳态性能的基础上,提出了风电场的稳态-暂态无功协同优化控制策略。最后,采用基于粒子群优化算法的改进人工鱼群算法以及PSASP和MATLAB联调的方式对优化模型求解,并通过算例验证了所提无功协同优化策略的有效性。Wind farms have weak support capabilities for grid voltage,and the fluctuations in output power can easily cause voltage stability issues at grid-connected points.Distributed synchronous condensers can be configured to improve system voltage stability.However,the steady-state reactive power output of the distributed synchronous condensers will affect its transient performance,and at the same time,it will affect the steady-state voltage security and network loss of the wind farm,resulting in the difficulty of steady state-transient state reactive power coordination of wind farms.In this context,a steady state-transient state reactive power cooperative optimization control strategy of wind farms considering wind turbines,capacitors and distributed condensers is proposed.Firstly,with the goal of improving the system voltage safety margin and reducing the network loss of wind farms,a steady-state reactive power optimization control strategy for wind farms in typical scenarios is designed.Secondly,the impact of synchronous condenser steady-state output power on transient performance at different fault levels is analyzed,with the aim of improving the lowest point of system transient voltage response and voltage recovery index under the expected fault set as the transient optimization objective.On the basis of considering steady-state performance,a steady state-transient state reactive power cooperative optimization control strategy of wind farms is proposed.Finally,the improved artificial fish swarm algorithm based on particle swarm optimization algorithm and the joint debugging of PSASP and MATLAB are used to solve the optimization model,and the effectiveness of the proposed reactive power cooperative optimization strategy is verified by a case.

关 键 词：风电场 调相机 电压安全裕度 稳定 暂态 无功协同优化控制 

分 类 号：TM614[电气工程—电力系统及自动化]