| 引用本文: | 郭上华,王 钢.融合FTU和配变告警信息的有源配网故障定位方法[J].电力系统保护与控制,2022,50(22):92-99.[点击复制] |
| GUO Shanghua,WANG Gang.An active distribution network fault location method based on FTU and transformer alarm information[J].Power System Protection and Control,2022,50(22):92-99[点击复制] |
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| 摘要: |
| 针对含分布式电源的有源配网相间短路故障定位问题，提出了一种融合FTU和配变告警信息的有源配网故障定位方法。首先，考虑配网故障后FTU和配变告警信息的不同特征，根据配网拓扑，动态生成不同告警信息对应的反映故障区段和告警信息关系的关联矩阵，并据此构造新的开关函数，有效避免了繁琐的逻辑运算。然后，根据两种信息源收到的实际告警信息分别建立优化模型，利用遗传算法求解，计算对应信息源下各区段的故障概率。最后，利用证据融合理论将两种信息源下的结果进行融合，得到最终的故障定位结果。以修改后的IEEE 33节点为例进行验证，结果表明，所提方法可对单点和双重故障实现定位，且具有较高的容错性。 |
| 关键词: 有源配网 故障定位 信息融合 遗传算法 配网自动化 |
| DOI：DOI:?10.19783/j.cnki.pspc.220292 |
| 投稿时间：2022-03-08修订日期：2022-05-20 |
| 基金项目:国家自然科学基金项目资助(51477057) |
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| An active distribution network fault location method based on FTU and transformer alarm information |
| GUO Shanghua,WANG Gang |
| (1. School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China;
2. Henan Xuji Instrument Co., Ltd., Xuchang 461000, China) |
| Abstract: |
| A fault location method for active distribution networks based on FTU and transformer alarm information fusion is proposed to solve the phase-to-phase short-circuit fault location of active distribution network with DG. First, by considering the different characteristics of FTU and distribution transformer alarm information after a distribution network fault, the corresponding matrices reflecting the relationship between fault zones and alarm information are built according to the distribution network topology, and a new switching function is developed which effectively avoids tedious logical operations. Then, an optimization model is established from the actual alarm information of the two information sources respectively and analyzed using a genetic algorithm to calculate the fault probability of each zone under the corresponding information source. Finally, the results from the two information sources are fused using evidence fusion theory to obtain the final fault location results. The modified IEEE 33-bus distribution grid is used as an example for simulation verification, and the results show that the proposed method can not only realize the location of single point and double faults, but also has high fault tolerance.
This work is supported by the National Natural Science Foundation of China (No. 51477057). |
| Key words: active distribution network fault location information fusion genetic algorithm distribution automation |
