摘要
最大供电能力是配电网发展的重要参考指标,然而配电网拓扑结构复杂多变使得完整描述供电路径存在一定的局限性。图在描述事物复杂连接关系时具有天然的优势,基于此,开展了基于图计算的配电网最大供电能力评估研究。首先,利用图数据结构与配电网拓扑的一致性,建立了配电网图模型,并利用图遍历描述转供关系,打破了配电网拓扑与描述方法间的壁垒。其次,考虑实际配电网运行约束限制,从转移站内负荷和承担站外转移负荷2个角度,构建了基于图计算的配电网最大供电能力评估模型。最后,利用改进人工鱼群算法求解评估模型,并对结果进行负载修正,获得了满足N-1安全校验的配电网最大供电能力。算例表明,所提出的方法可以有效评估配电网最大供电能力,能够适应配电网拓扑的复杂变化,具有一定的实际应用价值。
The total supply capability is an important reference indicator for distribution network development.However, the complex and variable topology of the distribution network makes the complete description of the power supply paths rather difficult. Based on the natural advantage of graphs in describing the complex connections of things, a research on the total supply capability of distribution networks based on the graph computation is carried out. Firstly, the consistency of graph data structure and the distribution network topology is used to establish a distribution network graph model. The graph traversal is used to describe the transfer relationships, breaking the barriers between the distribution network topology and the description methods. Secondly, considering the operational constraints of the actual distribution network, the total supply capability evaluation model of the distribution network based on the graph computation is constructed from two perspectives of transferring the internal loads of a substation and undertaking the transferred loads of the other substations.Finally, the improved artificial fish swarm algorithm is used to solve the evaluation model, and the load corrections are executed on the results to obtain the total supply capability of the distribution network that satisfies the N-1 security check.The case study shows that the proposed method effectively evaluates the total supply capability of the distribution network and adapts to the complex changes of the distribution network topology, having a certain practical application value.
作者
党建
闫运江
贾嵘
梁振锋
DANG Jian;YAN Yunjiang;JIA Rong;LIANG Zhenfeng(School of Electrical Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2022年第3期1039-1048,共10页
Power System Technology
基金
国家自然科学基金项目(52009106,51779206)
陕西省重点研发计划项目(2019ZDLGY18-03)
陕西省自然科学基金青年项目(2019J-130)。
关键词
配电网
最大供电能力
图计算
人工鱼群算法
N-1安全校验
distribution network
total supply capability
graph computation
artificial fish swarm algorithm
N-1 security check
