基于改进雷达图理论的交联聚乙烯电力电缆运行状态综合评估  

Operation Condition Evaluation for XLPE Power Cables Based on Improved Radar Chart Theory

作　　者：王宗耀[1] 

机构地区：[1]南昌工程学院,南昌330099

出　　处：《高压电器》2015年第3期145-150,共6页High Voltage Apparatus

摘　　要：为了对电力电缆状态检修提供决策支持,提出了一种基于改进雷达图理论的交联聚乙烯电力电缆运行状态综合评估模型。通过预防性电气试验、在线监测技术、设备缺陷及运行检修记录等途径获取电缆特征变量,建立了电缆运行状态综合评价指标体系。运用改进的层次分析法得到各项指标的权重值,在此基础上,对雷达图中各评估指标对应的扇形区域进行排序和角度分配,推导出了交联聚乙烯电力电缆运行状态综合评估和指标属性灵敏度计算公式。结合实际算例对电缆运行状态进行了定量评估分析,并与现有方法进行比较验证了该模型的正确性与优越性。To provide a decision support for power cable condition based maintenance, a model for comprehensive evaluating operation condition of XLPE power cables is constructed based on modified radar chart theory. By obtaining the cable characteristic variables through preventive electrical experiments, on-line monitoring technology, and records of equipment defects and operation maintenance, a comprehensive evaluation indexes system of cable operation state is established. The improved analytic hierarchy process（AHP）method is used to obtain the weight for each condition index, the corresponding sector areas of the evaluation indexes are ranked,and their angles are distributed. Consequently, formulae for comprehensive evaluation of XLPE power cable operation condition and for index attribute sensitivity analysis are derived. Quantitative operation condition evaluation of a XLPE power cable is conducted with the proposed model through an actual example, and the result is compared with that of the existing methods. It is concluded that the proposed model is superior to the existing methods.

关 键 词：电力电缆 雷达图 绝缘老化 状态检修 层次分析法 灵敏度分析 

分 类 号：TN958[电子电信—信号与信息处理] TM75[电子电信—信息与通信工程]