计及脆弱支路筛选的含风电电网连锁故障预防策略  

WIND POWER INTEGRATED GRID CASCADE FAULT PREVENTIONSTRATEGY CONSIDERING VULNERABLE BRANCH SCREENING

作　　者：邓慧琼 钟运恒 黄靖 Deng Huiqiong;Zhong Yunheng;Huang Jing(Intelligent Grid Simulation Analysis and Integrated Control Fujian Provincial University Engineering Research Center,Fujian University of Technology,Fuzhou 350108,China;School of Electronics,Electrical,and Physical Sciences,Fujian University of Technology,Fuzhou 350108,China)

机构地区：[1]智能电网仿真分析与综合控制福建省高校工程研究中心(福建理工大学),福州350108 [2]福建理工大学电子电气与物理学院,福州350108

出　　处：《太阳能学报》2024年第6期544-555,共12页Acta Energiae Solaris Sinica

基　　金：福建省自然科学基金(2022J01948);福建省科技计划(KY310254)。

摘　　要：针对含风电电力系统中由支路故障引发的连锁故障现象,提出一种考虑脆弱支路筛选的含风电电力系统连锁故障预防策略。首先,构建支路跳闸概率模型和系统安全指标,并引入概率密度函数和正态分布函数对含风电电力系统中各支路进行脆弱性评估,以此筛选出严重初始故障支路;然后根据支路脆弱性排序筛选出对电网运行安全性影响较为严重的一条或几条支路,建立预想事故集;最后,建立兼顾系统安全指标和优先消纳风电功率的连锁故障预防控制模型,并使用粒子群算法求解该模型。基于IEEE-14和IEEE-39节点系统进行仿真分析,结果表明所提考虑脆弱支路含风电电力系统连锁故障预防策略不仅可优先消纳风电功率,而且可确保含风电电力系统拥有充足的安全裕度。This paper presents a wind power integrated grid cascade fault prevention strategy that considers vulnerable branch screening,targeting the cascade fault phenomenon caused by branch faults in wind power systems.Firstly,a branch trip probability model and system safety indicators are constructed.Probability density functions and normal distribution functions are introduced to assess the vulnerability of various branches in the wind power system,thereby the serious initial fault branches are screened.Then,based on the vulnerability ranking of branches,one or several branches with serious impacts on grid operational safety are selected,and the expected accident set is established.Finally,a cascade fault prevention and control model is developed,which takes into account both system safety indicators and prioritized wind power absorption.The model is solved using a particle swarm optimization algorithm.The simulation analysis is conducted based on IEEE-14 and IEEE-39 node systems,and the results indicate that the proposed wind power integrated grid cascade fault prevention strategy,considering vulnerable branches,not only prioritizes wind power absorption but also ensures a sufficient security margin for the wind power system.

关 键 词：风电 连锁故障 综合脆弱性支路 新能源 预防控制 风险识别 

分 类 号：TM732[电气工程—电力系统及自动化]