改进层次分析法在柱上变压器状态评价的应用

Application of improved analytic hierarchy process state on evaluation of pole-type transformer

由于乡镇地区的10kV配电变压器主要以柱上变压器为主,通常使用状态评价来保障设备的可靠运行及用户供电质量。对在现场采集的状态信息及通过在线监测获取的系统设备数据进行全面综合地分析,以此来更好地对变压器进行状态评价。首先采用10/10~18/2标度的层次分析法对变压器的各项指标权重进行确定,之后再结合使用三角隶属度函数的模糊综合评价对变压器整体情况进行状态分析。在进行的状态评价时,存在单项指标处于较低水平,充分考虑个体偏差较大数据,使用均衡函数对指标权重进行修正,从而提高状态评价的准确性。通过案例验证,该方法能够有效地对柱上配电变压器进行状态评价,且符合规程要求及专家的意见。

Since the 10 kV distribution transformers in township areas are mainly dominated by pole-type transformers,condition evaluation is usually used to ensure the reliable operation of the equipment and the quality of user power supply.Comprehensively and comprehensively analyze the status information collected in the field and the system equipment data obtained through online monitoring,so as to better evaluate the transformer status.In this paper,the analytic hierarchy process of 10/10~18/2 scale is used to determine the weight of each index of the transformer,and then the state of the overall situation of the transformer is analyzed by using the fuzzy comprehensive evaluation of the trigonometric membership function.In the state evaluation,there are single indicators at a low level,taking into account the data with large individual deviations,and using the equilibrium function to modify the index weights to improve the accuracy of the state evaluation.Through case verification,the method can effectively evaluate the status of the distribution pole-type transformer,and meet the requirements of the regulations and experts.