电力系统主动解列断面搜索方法与孤岛调整策略

发布时间：2018-04-13 18:03

本文选题：主动解列 + 孤岛调整　；参考：《电力系统自动化》2017年19期

【摘要】：主动解列是一种基于电力系统实时动态信息的紧急控制手段。及时而恰当的主动解列可以阻隔故障传播,避免保护连锁动作可能导致的系统崩溃,有利于大扰动后电力系统的快速恢复。在此背景下,提出一种包括快速搜索解列断面和优化调整孤岛的系统主动解列方案。首先,对在机器学习领域发展起来的谱聚类算法进行改进,提出含约束谱聚类算法,以计及发电机组的同调约束,从而将解列断面搜索问题转化为广义特征值求解问题。为克服在含约束谱聚类算法中采用传统k-medoids算法存在的对初始中心点敏感、搜索效率低的缺点,提出改进k-medoids算法并将其与约束谱聚类算法相结合,以求取最优解列断面。然后,对于解列后每个不满足安全约束的孤岛,优化调整其发电机组出力,必要时也可削减一些负荷,以维持每个孤岛的安全运行。最后,以IEEE 118节点系统和实际电网为例,说明所提方法的可行性和有效性。
[Abstract]:Active decoupling is an emergency control method based on real-time dynamic information of power system.Timely and appropriate active decoupling can block the fault propagation and avoid the system collapse caused by the protection chain action, which is conducive to the rapid recovery of the power system after large disturbance.Under this background, a system active de-listing scheme is proposed, which includes fast searching of unlisted sections and optimizing adjustment of isolated islands.Firstly, the spectral clustering algorithm developed in the field of machine learning is improved, and a spectral clustering algorithm with constraints is proposed to take into account the homology constraints of generator sets.In order to overcome the shortcoming of the traditional k-medoids algorithm which is sensitive to the initial center point and low searching efficiency in the constrained spectral clustering algorithm, an improved k-medoids algorithm is proposed and combined with the constrained spectral clustering algorithm in order to obtain the optimal solution section.Then, for each isolated island which does not meet the safety constraints after the despatch, the generating unit output can be optimized and some loads can be reduced if necessary, so as to maintain the safe operation of each isolated island.Finally, taking the IEEE 118-bus system and the actual power grid as examples, the feasibility and effectiveness of the proposed method are illustrated.
【作者单位】：浙江大学电气工程学院;文莱科技大学电机与电子工程系;广东电网有限责任公司电力调度控制中心;
【基金】：国家高技术研究发展计划(863计划)资助项目(2015AA050202)~~
【分类号】：TM712

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