基于抗扰动能力和结构重要性评估的新能源电网脆弱性研究  

Research on vulnerability of new energy grid based on anti-disturbance capacity and structural importance assessment

作　　者：陈喆 Chen Zhe(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《能源与环保》2022年第3期259-263,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：中国南方电网有限责任公司科技项目资助(2018YFB0905300)。

摘　　要：基于改进的加权节点数来计算节点及线路的差异性,以此作为节点结构重要性评估指标;针对新能源接入后的随机扰动性,引入节点电压及故障影响度来作为节点抗扰动能力评估指标。由此,融合抗扰动能力和结构双向指标,完成新能源电网脆弱性的综合评估。通过仿真实验,验证了上述方法可精准辨识电网中的脆弱点,且可基于脆弱性的综合排序完成针对性防控,可为新能源电网平稳运行提供支撑。This paper calculates the differences of nodes and lines based on the improved weighted number of nodes,which is used as the assessment index of node structure importance;moreover,considering the random disturbance of new energy,the node voltage and fault influence degree are introduced as the assessment indexes of node anti-disturbance capacity.Therefore,the comprehensive assessment of the vulnerability of new energy grid is completed by integrating anti-disturbance capability and structural bidirectional indexes.The simulation results showed that the above method can accurately identify the vulnerable points in the power grid,and can complete the targeted prevention and control based on the comprehensive ranking of vulnerability,so as to provide support for the smooth operation of the new energy grid.

关 键 词：抗扰动能力 网络结构 电网脆弱性 综合性排序 

分 类 号：TM732[电气工程—电力系统及自动化]