智能变电站二次设备性能评估方法的研究

发布时间：2018-06-05 23:00

本文选题：智能变电站 + 二次设备　；参考：《华北电力大学》2014年硕士论文

【摘要】：在智能变电站建设过程中，由于新技术的不断应用，智能变电站二次设备性能的检测标准以及性能评估规范体系尚未建立健全，欠缺整体评估手段，还不能全面、科学地反映智能变电站二次设备的性能水平。为了对智能变电站二次设备的性能进行正确评估，为运维管理提供可靠依据，本文着力研究智能变电站二次设备的性能评估技术，最终形成智能变电站二次设备性能评估的全套评估方案，建立智能变电站二次设备的单体性能评估模型，提高性能评估的系统性和准确性。首先，针对影响因素和运行人员反馈的实际问题，本文分析并选取了智能变电站二次设备性能评估指标体系的主要方面，按照不同类型设备的特点，分别补充、完善并最终建立各自的性能评估指标体系。其次，，经过比较分析多种方法，采用层次分析法（AHP法）计算智能变电站二次设备性能评估指标的初始权重，然后引入变权理论对需要变权的指标进行变权处理；介绍了引入变权理论后的权重计算过程，由此建立的权重计算模型既能保留层次分析法定性与定量相结合的优点，同时也吸收了变权理论能兼顾性能指标值关于性能指标的水平组态的特点。再次，针对智能变电站二次设备性能的综合评估计算方法进行分析和选择，采用模糊综合评估法进行智能变电站二次设备性能评估的计算，建立了二级模糊综合评估模型，在分析的基础上合理选择模糊正态分布隶属函数进行隶属度的计算。结合由AHP法和变权理论得到的权重值，将模糊综合评估法应用于智能终端的性能评估。最后，在智能变电站二次设备性能评估体系建立完成的基础上，利用现代化网络技术开发了智能变电站二次设备性能评估系统。该评估系统能够为智能变电站二次设备的性能评估工作提供信息化支持，同时为企业的设备选型等工作提供数据基础。
[Abstract]:In the process of intelligent substation construction, due to the continuous application of new technology, the performance test standard and performance evaluation standard system of the secondary equipment in intelligent substation have not been established and perfected, lacking the whole evaluation means and not being comprehensive. Scientifically reflect the performance level of secondary equipment in intelligent substation. In order to correctly evaluate the performance of secondary equipment in intelligent substation and provide reliable basis for operation and maintenance management, this paper studies the performance evaluation technology of secondary equipment in intelligent substation. Finally, a complete evaluation scheme of secondary equipment performance evaluation in intelligent substation is formed, and a single performance evaluation model of secondary equipment in intelligent substation is established to improve the systematicness and accuracy of performance evaluation. First of all, in view of the actual problems of influencing factors and operators' feedback, this paper analyzes and selects the main aspects of the performance evaluation index system of secondary equipment in intelligent substation, which is supplemented according to the characteristics of different types of equipment. Perfect and finally establish their performance evaluation index system. Secondly, after comparing and analyzing various methods, the AHP method is used to calculate the initial weight of the performance evaluation index of secondary equipment in intelligent substation, and then the variable weight theory is introduced to deal with the variable weight index. The weight calculation process after introducing the variable weight theory is introduced. The weight calculation model can not only preserve the advantages of the combination of qualitative and quantitative analytic hierarchy process (AHP). At the same time, the variable weight theory can take into account the characteristics of the horizontal configuration of the performance index. Thirdly, according to the analysis and selection of the comprehensive evaluation calculation method of the secondary equipment performance of intelligent substation, the fuzzy comprehensive evaluation method is used to calculate the performance evaluation of the secondary equipment in the intelligent substation, and the two-stage fuzzy comprehensive evaluation model is established. On the basis of analysis, the membership degree of fuzzy normal distribution is calculated. Combined with the weight value obtained from AHP method and variable weight theory, the fuzzy comprehensive evaluation method is applied to the performance evaluation of intelligent terminal. Finally, based on the establishment of intelligent substation secondary equipment performance evaluation system, an intelligent substation secondary equipment performance evaluation system is developed using modern network technology. The evaluation system can provide information support for the performance evaluation of secondary equipment in intelligent substation and provide data basis for equipment selection in enterprises.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM63;TM76

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