计及新能源随机性的分布式调相机选址定容策略  

Location and Capacity Determination Strategy of Synchronous Condensers Considering Renewable Power Uncertainty

作　　者：胡其林 郭政麟 付强 彭禛 王兴鹏 石云天 HU Qilin;GUO Zhenglin;FU Qiang;PENG Zhen;WANG Xingpeng;SHI Yuntian(Ganzi Xingchuan Energy Investment and Development Co.,Kangding 626099,Sichuan,China;State Power Investment Corporation Southwest Energy Research Institute,Chengdu 610218,China;State Power Investment Corporation Sichuan Electric Power Co.,Ltd.,Chengdu 610000,China)

机构地区：[1]甘孜兴川能源投资开发有限公司,四川康定626099 [2]国家电投集团西南能源研究院有限公司,成都610218 [3]国家电投集团四川电力有限公司,成都610000

出　　处：《科技和产业》2025年第1期71-75,共5页Science Technology and Industry

摘　　要：新能源汇集站配置分布式调相机是抑制并网点暂态过电压的可行办法。传统的分布式调相机选址定容策略多基于新能源固定出力场景,忽略了各节点风、光出力随机性,难以保障策略的有效性与适应性。鉴于此,基于置信区间对新能源最大并网功率进行估计,并提出计及新能源随机性的新能源多场站短路比指标,以量化评估电网各节点电压支撑强度,据此制定调相机选址定容策略。仿真结果表明,所提策略能够在实际新能源出力波动时准确搜索电压支撑能力较弱的节点,相较传统策略更加有效抑制送端系统暂态过电压,为大规模新能源并网运行提供技术支撑。Configuring distributed synchronous condensers in renewable energy collector stations is a viable approach to mitigating transient overvoltage at grid connection points.Traditional distributed synchronous condenser’s location and capacity selection strategies are mostly based on fixed output scenarios of renewable energy,ignoring the randomness of wind and solar power output at each node,making it difficult to ensure the effectiveness and adaptability of the strategy.In view of this,the maximum grid connected power of renewable energy based on confidence intervals was estimated.A multiple renewable energy stations short circuit ratio index that takes into account the randomness of renewable energy is proposed to quantitatively evaluate the voltage support strength of each node in the power grid.Based on this,a distributed synchronous condensers location and capacity determination strategy is formulated.Simulation results demonstrate that the proposed strategy can accurately identify nodes with weaker voltage support capabilities under actual fluctuations of renewable energy outputs.Compared to conventional strategies,it proves more effective in suppressing transient overvoltage in the sending-end system,offering technical support for large-scale renewable energy integration into power grids.

关 键 词：新能源随机性 分布式调相机 选址定容 新能源多场站短路比 暂态过电压 

分 类 号：TM614[电气工程—电力系统及自动化] TM615TM342