输电网负荷恢复方案的优化计算方法

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摘要提出了一种输电网负荷恢复方案的优化计算方法。首先,将负荷恢复过程建模为序贯决策,将其分解为一系列相关的步骤,每一步允许恢复的负荷量上限由前一步总的发电机出力和各发电机运行约束共同确定。每一步的目标是在潮流约束以及考虑离散负荷增量的条件下最大化负荷恢复量。然后,将每一步的决策问题建模为一个混合整数非线性规划模型,并采用分支割平面法进行求解。集成三种割平面大幅消减了分支定界树的规模。最后,通过求解一系列的优化模型以获得完整的负荷恢复方案。通过RTS 24节点和IEEE 118节点算例证明了所提算法的正确性和有效性。

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	覃智君
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	彭超逸
	文劲宇

关键词 ：负荷恢复, 混合整数非线性规划, 分支割平面法

Abstract：This paper proposes an optimization based method to construct load restoration strategy for transmission systems. Firstly, the load restoration process is divided into a sequence of co-related steps. In each step, the total amount of load pickup is restricted by the synchronized generation and the operational constraints of each generator. The objective in each step is to maximize the load pickup. Secondly, the maximum load pickup problem is formulated as a mixed-integer nonlinear load restoration (MINLR) model and solved via a branch-and-cut (B&C) framework. The Gomory rounding cut, the knapsack cover cut, and the fixing variable cut are incorporated into each node of the enumeration tree to reduce the scale of the sub-trees. Thirdly, the load restoration strategy is obtained by solving a number of MINLR models till all load increments are restored. The RTS 24-bus system and the IEEE 118-bus system are used to illustrate the efficiency of the proposed method.

Key words： Load restoration mixed-integer nonlinear programming branch-and-cut method

收稿日期: 2014-04-22 出版日期: 2016-04-28

PACS:

TM744

基金资助:国家自然科学基金（51277155）,香港研究资助局基金（GRF17202714、ECS739713）,美国电力科学研究院研究基金（EP-P35424/C16059）和湖北电力调度通信中心研究项目资助

通讯作者: 覃智君男,1977年生,博士研究生,研究方向为电网恢复控制。E-mail: zjqin@eee.hku.hk E-mail: yhhou@eee.hku.hk

作者简介: 侯云鹤男,1975年生,助理教授,研究方向为电力系统运行分析、电网恢复控制。E-mail: yhhou@eee.hku.hk

引用本文:

覃智君, 侯云鹤, 李大虎, 王冲, 彭超逸, 文劲宇. 输电网负荷恢复方案的优化计算方法[J]. 电工技术学报, 2016, 31(8): 116-124. Qin Zhijun, Hou Yunhe, Li Dahu, Wang Chong, Peng Chaoyi, Wen Jinyu. Optimization Method for Constructing Load Restoration Strategy of Transmission Systems. Transactions of China Electrotechnical Society, 2016, 31(8): 116-124.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I8/116

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