基于属性综合评价方法的电网脆弱性分析  

Power network vulnerability assessment based on attribute comprehensive evaluation method

作　　者：钟嘉庆[1] 李颖[2] 卢志刚[1] 

机构地区：[1]燕山大学电力电子节能与传动控制河北省重点实验室,河北秦皇岛066004 [2]华北电网有限公司承德供电公司,河北承德067000

出　　处：《电力系统保护与控制》2012年第2期17-22,共6页Power System Protection and Control

基　　金：国家自然科学基金(61071201);河北自然科学基金(F2010001319)~~

摘　　要：在属性综合评价方法的基础上,结合故障概率、失负荷率、危险程度、恢复时间四个指标,建立电网脆弱性综合评估模型。该方法在考虑电网抗干扰能力和受影响程度的同时,兼顾了故障发生概率和电网处理故障的能力。对电网及其线路脆弱性评估结果从定性和定量两个角度进行分析,其中定性表示电网线路的脆弱性严重等级,定量表示电网线路相同脆弱性等级之间的细微差值,对电网脆弱性评估有更好的辨识能力和更高的辨识精度。通过对IEEE14节点系统的仿真,运行结果验证了该方法的合理性与有效性,可为制定与落实保证电网安全运行和降低电网脆弱性的措施提供更准确的依据。Using attribute synthetic assessment method and combining four indexes including the probability of failure, probability of lose load, influence of severity and faults removing time, a comprehensive evaluation model of network vulnerability assessment is established. It considers not only grid anti-interference ability and affected degree but also the probability of fault and grid troubleshooting skills. It expresses the results of assessment qualitatively and quantitatively. Qualitative results show the level of vulnerability and the quantitative results express the difference of fragile routes between the same levels. It brings better recognition ability and higher precision for transmission lines vulnerability assessment. Based on the simulation of IEEEI4 node systems, the results prove the reasonability and effectiveness of this method. It provides more accurate evidence for formulating measures of ensuring the safety of the power network and decreasing its vulnerability.

关 键 词：属性综合评价 故障概率 失负荷率 危险程度 恢复时间 

分 类 号：TM711[电气工程—电力系统及自动化]