基于改进模糊层次综合评判法的输电线路舞动预警
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TM726

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    摘要:

    输电线路舞动严重影响电网的安全运行。文中从造成输电线路舞动的影响因素出发,将模糊数学理论运用到输电线路舞动预警研究中,构建基于改进模糊层次综合评判法的输电线路舞动预警模型。文中首先筛选出垂直风速、雨量、相对湿度、气温、导线张力5个主要影响指标,构建预警评判因素集以及Ⅳ级、Ⅲ级、Ⅱ级、Ⅰ级4种评判目标集。然后,将监测数据代入模型计算,根据模糊综合评判结果发布预警信息,为工作人员感知线路风险、做好防灾准备提供指引。最后,开发基于ArcGIS Engine的输电线路舞动预警辅助决策系统,可视化展示预警信息,并选取实际线路数据验证所提方法的有效性,结果表明所提预警方法与技术可为输电线路安全运行提供决策支撑。

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Early warning model of transmission line galloping based on improved fuzzy hierarchical comprehensive evaluation
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    The safe operation of power grid is affected seriously by transmission line galloping. Based on the influencing factors of transmission line galloping,the fuzzy mathematics theory is applied in the early warning of transmission line galloping. An early warning model of transmission line galloping based on the improved fuzzy hierarchical comprehensive evaluation method is proposed. Firstly,five major impact indicators including wind speed,rainfall,relative humidity,air temperature and wire tension are screened out to construct an early warning evaluation factor set. Four evaluation target sets including level IV,level III,level II and level I are constructed. Then the monitoring data is substituted into the model calculation. The early warning information is issued according to the fuzzy comprehensive evaluation results,which provides guidance for staff to perceive line risk events and prepare for disaster prevention. Finally,the early warning auxiliary decision-making system of the transmission line galloping based on ArcGIS Engine is developed to achieve the visualization of early warning information,and the actual line data is selected to verify the effectiveness of the proposed method. The results show that the proposed early warning method provides decision support for the safe operation of transmission lines.

引用本文

徐文宝,周建华.基于改进模糊层次综合评判法的输电线路舞动预警[J].电力工程技术,2021,40(5):107-113

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  • 收稿日期:2021-03-12
  • 最后修改日期:2021-05-28
  • 录用日期:2020-08-04
  • 在线发布日期: 2021-09-30
  • 出版日期: 2021-09-28