基于多级模糊方法的变电设备状态评价体系

Condition Evaluation System of Substation Equipment Based on Multi-Level Fuzzy Method

随着经济的发展与社会的进步,各行各业对电力系统的供电稳定性都提出了更高的要求,因此有必要对变电设备的状态进行科学、合理的评价,保证其工作稳定性和可靠性。本文从电力系统变电设备的运行特点出发,首先基于多级模糊评价方法,构建了变电设备状态评价的模型和评价指标体系;其次运用模糊层析分析法,对构建的状态模型进行了运算;最后,将本文所提出的评价方法运用在某地区500kV电压等级变电站的主变压器和主断路器状态评价上。经过实际验证,本文所提出的基于多级模糊方法的变电设备状态评价体系对于变电设备状态评价具有一定指导意义,适宜大规模推广应用。

With the development of economy and society,all industries have put forward higher requirements on the stability of power supply in a power system,so it is necessary to make scientific and reasonable evaluation on the state of substation equipment to ensure its working stability and reliability.In this paper,from the operation characteristics of substation equipment in power system,firstly,the model and evaluation index system of substation equipment condition evaluation are constructed based on multi-level fuzzy evaluation method;secondly,the fuzzy hierarchical analysis method is used to operate the constructed condition model;finally,the evaluation method proposed in this paper is applied to the condition evaluation of main transformer and main circuit breaker of 500kV voltage level substation in a certain area.After practical verification,the multi-level fuzzy method-based substation equipment condition evaluation system proposed in this paper has certain guiding significance for substation equipment condition evaluation and is suitable for large-scale promotion and application.