| 引用本文: | 李琳,穆云飞,殷自力,贾宏杰,王晓辉,张功林.基于台风场景模拟的配电网架空线路薄弱环节辨识方法[J].电力自动化设备,2020,40(5): |
| LI Lin,MU Yunfei,YIN Zili,JIA Hongjie,WANG Xiaohui,ZHANG Gonglin.Identification method of weak links of overhead lines in distribution network based on typhoon scenario simulation[J].Electric Power Automation Equipment,2020,40(5): |
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| 摘要: |
| 为降低台风造成的配电网负荷和经济损失，需对配电网架空线路的薄弱环节进行辨识。首先，考虑台风预报信息及其不确定性，利用Batts模型刻画台风登陆后风场各点风速及其衰减过程；然后，基于电杆风荷载与抗弯强度的关系建立电杆与线路故障率模型；同时，综合考虑线路故障频率及供电负荷重要程度定义线路脆弱度指标，并采用层次分析法确定指标中各因素权重；最后，提出一种台风场景下基于蒙特卡罗法的配电网架空线路薄弱环节辨识方法。典型算例结果表明，以所提方法确定的线路薄弱环节作为加固配电网混凝土电杆、分配应急发电车的依据，可有效降低台风灾害下配电网负荷和经济损失。 |
| 关键词: 风场模型 架空线路故障率 薄弱环节 线路脆弱度指标 层次分析法 |
| DOI：10.16081/j.epae.202004021 |
| 分类号:TM73 |
| 基金项目:国家电网公司科技项目(多元主体博弈下的用户侧综合能源优化理论与方法研究)(U1766210)；国家电网公司科技项目(基于营配调信息贯通下的配电网调度应用管控验证研究) |
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| Identification method of weak links of overhead lines in distribution network based on typhoon scenario simulation |
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LI Lin1, MU Yunfei1, YIN Zili2, JIA Hongjie1, WANG Xiaohui3, ZHANG Gonglin4
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1.Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;2.State Grid Fujian Electric Power Company, Fuzhou 350003, China;3.China Electric Power Research Institute, Beijing 100083, China;4.Electric Power Research Institute of State Grid Fujian Electric Power Company, Fuzhou 350007, China
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| Abstract: |
| In order to reduce the load and economic loss of distribution network caused by typhoon, it is needed to identify the weak links of overhead lines in distribution network. Firstly, considering the forecasting information of typhoon and its uncertainties, Batts model is used to describe wind speed of each point in wind field and its attenuation process after typhoon landing. Secondly, the failure rate models of pole and line are established based on the relationship between wind load and bending strength of the pole. Meanwhile, the line vulnerability index is defined considering the line failure frequency and the load importance degree comprehensively, and the analytic hierarchy process is adopted to determine the weight of factors in the index. Finally, an identification method of weak links of overhead lines in distribution network based on Monte Carlo method is proposed under the scenario of typhoon. The results of typical case show that the load and economic loss of distribution network under typhoon disaster can be effectively reduced by taking the weak links of overhead lines determined by the proposed method as the basis for reinforcing the concrete poles and distributing emergency generators of distribution network. |
| Key words: wind field model failure rate of overhead line weak link line vulnerability index analytic hierarchy process |
