| 摘要: |
| 提高状态评价的精确性对继电保护状态检修工作有重要的意义。提出一种基于变权重系数的继电保护模糊状态评价方法。首先提取影响继电保护装置及二次回路状态的主要评价因素，建立科学合理的状态评价指标体系。再根据因素空间理论的变权综合概念，引入均衡函数调整各个因素的权重系数。最后采用模糊三角梯形隶属函数模型并选取合成算子，建立一个较为客观、准确的继电保护装置及二次回路状态评价体系。运行实例表明，该状态评价方法有利于准确地评判继电保护装置及二次回路的真实运行状态，为状态检修提供合理依据。 |
| 关键词: 继电保护 状态评价 变权重 模糊综合评价 |
| DOI：10.7667/PSPC150634 |
| 投稿时间：2015-04-16 |
| 基金项目: |
|
| Fuzzy synthetic evaluation of relay protection based on variable weight value |
| SONG Renjie,CHEN Yuming |
| (School of Information Science and Engineering, Northeast Dianli University, Jilin 132012, China) |
| Abstract: |
| To improve the accuracy of the state evaluation is the most important for the relay protection state maintenance. Therefore, a fuzzy synthetic evaluation of relay protection based on variable weight value is proposed. The major factor of the device and secondary circuit of relay protection is picked up to establish a reasonable index system of state evaluation. Then according to the variable weight comprehensive concept of factor space theory, the balance function is introduced to adjust the weight coefficient of each factor. Finally, the membership function in triangle trapezoid distribution is got to show the condition information, and synthetic operator is selected, then an objective and accurate evaluation system of relay protection equipment and secondary circuit is proposed. Running examples show that after dealing with the variable weight, some factors weight value become larger or smaller, so running state of evaluate factor may be changed, which makes it close to the real running state. |
| Key words: relay protection state evaluation variable weight fuzzy comprehensive evaluation |
