基于特高压和超高压直流互联的送端电网AGC系统控制策略  

AGC system control strategy of sending power grid interconnected with UHVDC and EHVDC

作　　者：伍凌云 何笠 杨可 罗卫华 兰强 谈超 肖雄 WU Lingyun;HE Li;YANG Ke;LUO Weihua;LAN Qiang;TAN Chao;XIAO Xiong(Southwest Branch of State Grid Corporation of China,Chengdu 610041,China;NARI Group Corporation/State Grid Electric Power Research Institute,Nanjing 211106,China;State Key Laboratory for Power Grid Safety and Energy Conservation,China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China)

机构地区：[1]国家电网公司西南分部,四川成都610041 [2]南瑞集团有限公司(国网电力科学研究院有限公司),江苏南京211106 [3]中国电力科学研究院有限公司电网安全与节能国家重点实验室,北京100192

出　　处：《电力自动化设备》2021年第8期183-188,共6页Electric Power Automation Equipment

摘　　要：采用基于特高压和超高压直流的电网异步联网方式对现有的自动发电控制(AGC)系统控制策略和电网频率控制的适应性问题逐步显现。为分析直流系统异步联网方式对电网AGC系统控制策略带来的影响,结合直流系统负荷的频率静态特性及其附加频率控制器的动态特性,分析了区域电网AGC对控制区设置、控制模式选择以及与直流附加频率控制器的适应性的影响,并对目前国内广泛应用的控制性能评价标准(CPS)控制策略适应性进行探讨。基于PSD-FDS平台进行直流系统与AGC的频率控制仿真验证和实际工程应用,结果表明基于特高压和超高压直流互联的送端电网AGC控制策略能够较好地适应异步互联电网,为异步联网方式下AGC系统控制策略制定和优化提供参考。The problem of adaptability of AGC(Automatic Generation Control)system control strategy and frequency control of power grid which adopts asynchronous interconnection mode with UHVDC and EHVDC gradually appears.In order to analyze the influence of asynchronous interconnection mode of DC system on AGC system control strategy,combined with static characteristics of load in DC system and dynamic characteristics of additional frequency controller,the influence of regional power grid AGC on the setting of control area,the selection of control modes and the adaptability of DC additional frequency controller are analyzed.At the same time,the adaptability of CPS(Control Performance Standard)control strategy which is widely used in China is discussed.Based on PSD-FDS platform,the simulation verification and engineering application of DC system and AGC frequency control are carried out.The simulative results show that AGC system control strategy of sending power grid interconnected with UHVDC and EHVDC can adapt to asynchronous interconnected power grids,and provide reference for the formulation and optimization of AGC system control strategy under asynchronous interconnection mode.

关 键 词：特高压直流 超高压直流 异步联网 自动发电控制 频率控制 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM723