摘要
为了解决目前基于电能路由器(EER)的配电网能量优化普遍缺乏对故障恢复的研究及能量路由损耗过大的问题,同时考虑稳定运行与故障恢复2种工况,提出了一种基于EER的配电网分层能量优化策略,其包括下层局域电网(E-LAN)内的能量优化以及上层广域电网(E-WAN)内的能量路由优化。对于稳定运行工况,提出了以最小化运行总成本为目标的E-LAN能量优化策略,以及以最小损耗就地消纳的E-WAN路由优化策略,路由优化策略在保障可再生能源就地消纳的同时,实现电能损耗最小化。对于故障恢复工况,提出了以最大化累计上网电量为目标的E-LAN能量优化策略,以及最小损耗多源协同的E-WAN路由优化策略,路由优化策略可在向关键负荷优先供电的同时,实现电能损耗最小化,并提升故障后负荷存活率。最后基于配电网分层网络模型进行仿真分析与对比,验证了所提能量优化策略的可行性、有效性和优越性。
To solve the problem of lack of research on fault recovery and excessive loss of energy routing in distribution network energy optimization based on EER(Electric Energy Router),the hierarchical energy optimization strategy of distribution network based on EER is proposed considering both stable operation and fault recovery operation conditions,which includes energy optimization in lower-layer E-LAN(Energy Local Area Network) and energy routing optimization in upper-layer E-WAN(Energy Wide Area Network).For stable operation condition,the E-LAN energy optimization strategy to minimize the total operation cost is proposed,together with the E-WAN routing optimization strategy using for minimum loss local consumption,thus ensuring the local consumption of renewable energy and minimizing the power loss.For the fault recovery condition,the E-LAN energy optimization strategy to maximize the accumulated power on the grid is proposed,together with the E-WAN routing optimization strategy with minimum loss and multi-source cooperation is proposed,which can minimize the power loss and improve the load survival rate after fault while giving priority of power supply to the key load.Finally,the feasibility,effectiveness,and superiority of the proposed energy optimization strategy are verified through the simulation analysis and comparison based on the hierarchical distribution network model.
作者
杜云飞
尹项根
赖锦木
王祯
胡家玄
于吉
DU Yunfei;YIN Xianggen;LAI Jinmu;WANG Zhen;HU Jiaxuan;YU Ji(State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan 430074,China;School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2022年第4期154-164,171,共12页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51877089)。
关键词
电能路由器
稳定运行
故障恢复
分层配电网
能量优化
路由优化
关键负荷
electric energy router
stable operation
fault recovery
hierarchical distribution network
energy optimization
routing optimization
key load
