网架重构过程中消除线路过载的环网恢复决策优化

发布时间：2018-03-10 13:24

本文选题：系统恢复　切入点：网架重构　出处：《中国电机工程学报》2017年05期 　论文类型：期刊论文

【摘要】：大停电后的电力系统恢复过程极为复杂,在网架重构阶段系统网架尚不完整,可能由于负荷的陆续恢复而出现部分线路潮流过载或重载的问题。该文提出一种以消除线路过载为目标的环网恢复策略,即投运部分待恢复线路,建立环状网络结构。首先对从树状网络过渡到环状网络的环网恢复策略进行了分析,并建立了直接计及交流潮流约束的线路过载消除的混合整数非线性规划模型。在此基础上,为提高求解效率,通过将原问题分解为主问题和子问题提出了环网恢复方案优化的分层迭代方法,其中主问题为计及直流潮流约束的线路过载消除的网架调整方案优化模型,子问题为合闸角约束校核和固定网架的交流潮流约束校核,通过主问题和两个子问题间的分层迭代得到最终的环网恢复方案。IEEE39节点系统算例和IEEE118节点系统算例验证了文中所提方法的有效性。
[Abstract]:The recovery process of power system after power outage is very complicated. The problem of overload or heavy load of some lines may occur due to the recovery of load. In this paper, a loop network recovery strategy, which aims at eliminating the overload of line, is proposed, that is to put into operation part of the line to be recovered. The ring network structure is established. Firstly, the ring network recovery strategy from tree network to annular network is analyzed, and a hybrid integer nonlinear programming model for line overload elimination with direct consideration of AC power flow constraints is established. In order to improve the solving efficiency, a hierarchical iterative method is proposed to optimize the loop restoration scheme by decomposing the original problem into the main problem and sub-problem, in which the main problem is the optimal model of the grid structure adjustment scheme which takes into account the DC power flow constraints to eliminate the overloading of the line. The sub-problem is the closing angle constraint check and the AC tidal current constraint check of the fixed grid. Through the hierarchical iteration between the main problem and the two sub-problems, the final ring network recovery scheme. IEEE 39-bus system and IEEE118 node system examples are obtained to verify the effectiveness of the proposed method.
【作者单位】：华北电力大学电气与电子工程学院;
【基金】：国家自然科学基金(51277076) 中央高校基金科研业务费专项资金资助项目(2014XS75)~~
【分类号】：TM711

【相似文献】