摘要
将电网安全风险相关的网络拓扑结构、负荷、线路载流量等基础数据进行标准化处理,根据配电网直接面向负荷的特点,建立起基于负荷损失风险的110kV电网安全风险计算模型,利用层次分析法与雷达图将风险指标和标准化处理之后的基础数据进行聚合,并通过雷达图反映指标聚合前后的变化,找出影响电网安全风险的关键指标。建立起一套基于110kV电网基础数据的综合安全风险评估体系,来反映电网存在的安全风险点,以便于电网运行管理者对影响110kV电网安全的关键指标加以改善。以某地级市电网进行实际测试,结果表明,所述方法能准确反映造成电网安全风险的主要指标,与电网实际运行情况基本相符。
This paper standardized the basic data related to grid security risk,including the topological structure of power grid,load and current carrying capacity of transmission lines.As distribution systems were directly based on load,an 11 0 kV power grid security risk calculation model based on load loss risk was established to calculate risk indicators.The analytic hierarchy process (AHP) and radar chart method were used to aggregate the risk indicators and the standardized basic data.Key indicators that affected the power grid security risks could be identified by analyzing the indicators changes before and after the aggregation in the radar chart.This paper established a comprehensive safety risk assessment system based on the basic data of 110 kV power grid to reflect the security risk point existing in power grid,so that the power grid operation administrator could improve the key indicators that affected the 11 0 kV power grid security.An actual test was carried out on certain city power grid.The results show that the method mentioned above can accurately reflect the main indicators affecting the grid security risks,which is basically consistent with the actual operation of the power grid.
作者
冯大伟
尹云剑
王震泉
管永高
FENG Da-wei;YIN Yun-jian;WANG Zhen-quan;GUAN Yong-gao(China Energy Engineering Group Jiangsu Power Design Institute Co.,Ltd,Nanjing 2111 02,China;State Grid Jiangsu Electric Power Co.,Ltd,Maintenance Branch Company,Nanjing 2111 02,China)
出处
《电工电气》
2019年第8期21-25,53,共6页
Electrotechnics Electric
关键词
110KV电网
安全风险计算模型
层次分析法
基础数据聚合
综合风险评估体系
11 0 kV power grid
security risk calculation model
analytic hierarchy process
essential data aggregate
integrated risk assessment system
