摘要
针对主动配电网多层信息分布式存储和快速优化的需求,提出一种分层的时变优化追踪算法。首先,各级配电系统对时变优化问题的复杂约束进行线性化处理。进一步,各级配电系统根据其相互之间的级联规律,通过内部计算和边界信息的交换,快速形成其在寻优计算过程中相互牵制的耦合灵敏度。据此,结合各级配电系统内部的灵敏度计算可形成整体的寻优计算结果,并通过计算结果与配电网反馈信息的不断互动,最终实现整体趋优的时变优化追踪效果。该算法仅需各级配电系统边界信息的交换即可实现,且可达到与集中计算相同的优化结果。通过IEEE 123-101节点中-低压配电网算例分析,验证了所提出算法用于多层主动配电网优化的有效性和优越性。
For meeting the requirement of distributed and fast optimization in multi-layer active distribution networks, a layered time-varying optimization tracking algorithm was proposed. Firstly, each subsystem in distribution networks linearized the complex constraints of time-varying optimization problems. Furtherly, by information exchanging and according to the connecting characteristic, each subsystem calculated the coupling sensitivities among each other. Then, combined with the sensitivities calculated inside each subsystem, the optimization tracking direction can be calculated. With the continuous interaction of the calculation results being implemented and the feedback process, the overall operation state of distribution networks can be driven to a scope around the optimal value finally. The algorithm can be realized only by boundary information exchanging for each subsystem, with achieving the same convergence result as the centralized algorithm. The 123-101 node distribution system was used to verify the effectiveness and superiority of the algorithm.
作者
朱星旭
韩学山
杨明
许易经
王士柏
李本新
ZHU Xingxu;HAN Xueshan;YANG Ming;XU Yijing;WANG Shibo;LI Benxin(Key Laboratory of Power System Intelligent Dispatch and Control(Shandong University),Ministry of Education,Jinan 250061,Shandong Province,China;State Grid Shandong Electric Power Research Institute,Jinan 250003,Shandong Province,China;Northeast Electric Power University,Jilin 132012,Jilin Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第24期7093-7106,共14页
Proceedings of the CSEE
基金
国家自然科学基金项目(51477091)~~
关键词
主动配电网
分层
时变优化
逆变器
量测
通信
active distribution network
layered
time-varying optimization
inverter
measurement
communication
