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.
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)
出处
《科技和产业》
2025年第1期71-75,共5页
Science Technology and Industry
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
renewable energy stochasticity
distributed synchronous condensers
site selection and capacity determination
multiple renewable energy stations short circuit ratio
transient overvoltage
作者简介
胡其林(1991—),男,四川沐川人,工程师,研究方向为电气工程及其自动化;通信作者:郭政麟(1990—),男,青海西宁人,硕士,工程师,研究方向为电气工程及其自动化;付强(1991—),男,四川乐山人,中级经济师,研究方向为能源双碳经济;彭禛(1995—),女,重庆人,硕士,研究方向为应用金融;王兴鹏(1992—),男,甘肃张掖人,中级工程师,研究方向为工程管理;石云天(1999—),男,四川成都人,助理工程师,研究方向为工程及其自动化。
