基于变权综合理论和模糊综合评价的多结果输出输电线路运行状态评价方法

发布时间：2018-10-24 18:52

【摘要】：为提高输电线路运行状态评估的准确性,提出了基于变权综合理论和模糊综合评价的多结果输出输电线路运行状态评价方法。该方法通过确定输电线路运行状态评价的关键评价因素,建立多结果输出的模糊综合评价模型,得到了以塔位段单元、塔位段、线路单元、线路总体运行状态为分类的评判计算模型,并基于变权综合理论,引入均衡函数,对由层次分析法确定的各个评价因素的权重系数进行调整。结果表明:该方法采用改进的隶属函数,更加准确地表达了评价因素的分布状态,并引入均衡函数对评价因素的常权系数进行调整,改善了常权系数下,评价指标偏离正常值的状态量对线路运行状态评价结果无影响的情况。工程实例计算与其他方法的对比分析表明,所提出的输电线路运行状态评价方法使评价结果更加符合工程实际,具有良好的应用前景。
[Abstract]:In order to improve the accuracy of power transmission line operation state evaluation, a multi-result output transmission line operation state evaluation method based on variable weight synthesis theory and fuzzy comprehensive evaluation is proposed. By determining the key evaluation factors of transmission line operation state evaluation, the fuzzy comprehensive evaluation model of multi-result output is established, and the tower section unit, tower section and line unit are obtained. Based on the theory of variable weight synthesis and the introduction of equilibrium function, the weight coefficients of each evaluation factor determined by AHP are adjusted. The results show that the distribution of evaluation factors is expressed more accurately by using the improved membership function, and the constant weight coefficient of the evaluation factor is adjusted by introducing the equilibrium function, and the constant weight coefficient is improved. The condition that the evaluation index deviates from the normal value has no influence on the evaluation result of the line running state. The comparison and analysis of engineering examples and other methods show that the proposed evaluation method of transmission line operation status makes the evaluation results more in line with the engineering practice and has a good application prospect.
【作者单位】：西安科技大学建筑与土木工程学院;中国电力科学研究院;
【基金】：国家电网公司科技项目(GC71-15-037)~~
【分类号】：TM75

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