省级500kV电网结构安全性定量分析及其年度变化趋势预测  被引量:2

Provincial 500kV power grid structural safety quantitatively analysis and its annual change trend prediction

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作  者:王皓宇[1] 邹舒[1] 竺炜[2] 王琴英[2] 蒋银华[2] 朱元[1] 周倩[1] 

机构地区:[1]国家电网重庆市电力公司,重庆400010 [2]长沙理工大学电气与信息工程学院,湖南长沙410004

出  处:《电力科学与技术学报》2015年第4期105-112,共8页Journal of Electric Power Science And Technology

基  金:重庆市电力公司委托咨询项目(SGCQ0000FZWT1400357);湖南省高校创新平台开放基金项目(13K056)

摘  要:传统的N-1潮流校验法无法定量分析电网的功角安全性及年度变化趋势,网架结构的坚强性评价缺乏指标依据。基于近期研究成果,针对某省500kV主网的中长期规划方案,采用等效功角指标,定量分析各年度主网的功角安全性;对影响安全性的联络线进行关键性排序分析,以识别结构的薄弱之处。安全性年度变化表明,规划方案中2020年的网架功角安全性有下降趋势,需重新调整规划方案。该分析方法适用于电网结构规划及方案调整。The traditional N-1 power flow calibration method couldn't be used for quantitatively analyzing power angle security in power grid and its trend of annual change, so the strength evaluation of the grid structure was lack of the basis of index. In this paper, based on the recent research achievements, aiming at medium-long term plan scheme in one provincial 500kV grid, the equivalent power angle index was adopted to quantitatively analyze power-angle security in the power grid each year. In order to identify the weak points of the structure, analysis was given for the critical sort of tie lines which have an impact on the security. The annual security change shows that power angle security has a downward trend in 2020 power grid planning scheme and it needs readjustment. The analysis method is suitable for grid structure planning and scheme adjustment.

关 键 词:定量安全性指标 等效功角 年度安全性趋势 电网规划 

分 类 号:TM71[电气工程—电力系统及自动化]

 

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