摘要
考虑近区海上风电场风速间的相关性并计及柔性直流输电系统(voltage source converter based HVDC,VSC-HVDC)设备故障影响,采用时序蒙特卡罗法建立了考虑恶劣天气影响的海上风电场性直流并网系统可靠性评估模型。首先,提出了考虑恶劣天气影响的海上元件时变可靠性参数计算模型,并基于连续马及柔尔可夫链蒙特卡罗法模拟海上风速,采用Copula表征风速间的相关性,修正了元件的可靠性参数。然后,针对海上风电场及柔性直流并网系统元件众多、故障模式多样的特点,将其划分为多个子系统,分别建立了各子系统的可靠性评估模型,最终合并建立了整个海上风电场及柔性直流并网系统的可靠性评估模型。针对由2个海上风电场和1个三端VSC-HVDC系统组成的算例系统进行了计算分析,证明了所提模型和方法的正确性和有效性。
The reliability model of VSC-HVDC system combined with offshore wind farm is established by using the sequential Monte Carlo method,considering the correlation between the wind speed of offshore wind farm and VSC-HVDC component failure.Firstly,the time-varying model of component reliability parameters considering extreme weather is proposed.Based on this,the continuous Markov chain Monte Carlo method is used to simulate the wind speed,and Copula is used to represent the correlation between the wind speeds to modify the reliability parameters of components.Secondly,according to the characteristics of numerous components and various failure modes of offshore wind farm and VSC-HVDC connected system,the wind farm and the system are divided into several subsystems,and reliability evaluation models for each subsystem are established respectively.Finally,all models are combined to establish the reliability evaluation model of the whole offshore wind farm and VSC-HVDC connected system is established.An example system consisting of two offshore wind farms and one three terminal VSC-HVDC system is analyzed,and the accurate and effectiveness of the proposed model and method are proved.
作者
李凌飞
孙悦
黄莹
胡博
侯婷
黄威
郭龙
胡胤哲
姬煜轲
谢开贵
LI Lingfei;SUN Yue;HUANG Ying;HU Bo;HOU Ting;HUANG Wei;GUO Long;HU Yinzhe;JI Yuke;XIE Kaigui(State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China)
出处
《南方电网技术》
CSCD
北大核心
2020年第12期32-42,共11页
Southern Power System Technology
基金
广东省重点领域研发计划资助项目“粤港澳大湾区智慧电力柔性互联关键技术研究”(2019B111109001)。
