Techane Lidiya Bitew, Salau Ayodeji Olalekan, Gebru Yalew Werkie, Hailu Engidaw Abel
Department of Electrical and Computer Engineering, Mizan Tepi University, Ethiopia.
Department of Electrical/Electronics and Computer Engineering, Afe Babalola University, Ado-Ekiti, Nigeria.
Heliyon. 2022 May 12;8(5):e09397. doi: 10.1016/j.heliyon.2022.e09397. eCollection 2022 May.
An electric distribution network is a part of a power system that distributes electricity to users with little power loss along its path. Distribution systems suffer from frequent interruptions, high power losses, and low voltage profile which negatively impacts both the utility and the consumers. The major cause of these challenges are unplanned network expansion, improper routing of feeders and branches, untagged transformers, poles, and capacitors, and lack of standard procedures for expansion. In this paper, ArcGIS software was used together with an Analytical Hierarchy Process (AHP) to find the optimal path for distribution feeders, as well as, to find the new transformers, poles, and capacitors placement. ETAP Software was used to model the electric distribution network and also used to compute the power loss in the network and its voltage profile. As a result, after optimal rerouting, the length of the distribution feeder was reduced by 4km. Consequently, the simulation results show that the minimum node voltage is 0.95152 p.u, which is within the IEEE limit of 0.95-1.05. The active and reactive power losses are reduced from 339.49 kW to 222.43kW (by 35%) and from 238.79kVAr to 157.38 kVAr (by 34%), respectively.
配电网络是电力系统的一部分，它将电力沿着线路输送给用户，且功率损耗很小。配电系统存在频繁停电、功率损耗大以及电压分布低等问题，这对电力公司和消费者都产生了负面影响。这些挑战的主要原因是网络的无计划扩展、馈线和分支的路由不当、变压器、电线杆和电容器未标记，以及缺乏扩展的标准程序。在本文中，ArcGIS软件与层次分析法（AHP）一起被用于寻找配电馈线的最优路径，以及确定新变压器、电线杆和电容器的位置。ETAP软件被用于对配电网络进行建模，并计算网络中的功率损耗及其电压分布。结果，经过最优重新布线后，配电馈线的长度减少了4公里。因此，仿真结果表明，最小节点电压为0.95152标幺值，在IEEE规定的0.95 - 1.05范围内。有功和无功功率损耗分别从339.49千瓦降至222.43千瓦（降低了35%）和从238.79千乏降至157.38千乏（降低了34%）。
