一种考虑风电场并网的大电网快速主动解列策略

doi:10.19595/j.cnki.1000-6753.tces.181296

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摘要针对高风电渗透率电力系统的快速主动解列问题,提出了一种两阶段高风电渗透率下大电网全时段快速主动解列策略。在第一阶段,通过修正系统的收缩导纳矩阵将风功率进行等值,离线计算出电机耦合程度的分类结果并对其功角拉普拉斯矩阵进行在线修正,进而在线获得当前的同调分群结果;在第二阶段,以图论为基础,通过约束谱聚类算法将解列断面搜索问题转换为广义特征值求解问题,并运用改进k-means算法快速求取实时的最优解列断面。最后通过IEEE 118节点系统仿真,验证了所提策略的正确性、有效性和快速性。

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	唐飞
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关键词 ：主动解列, 风电场并网, 发电机同调分群, 最优解列断面搜索, 改进k-means算法

Abstract：Aiming at the problem of fast active islanding of power system with high wind permeability, a two-stages fast active islanding strategy for large scale power grid under high wind power penetration is proposed in this paper. In the first stage, wind power is equivalent by modifying the shrink admittance matrix of the system. The power angle Laplacian matrix is modified online according to the offline calculation results of the coupling degree of the generators, and then the current coherency identification results are obtained online. In the second stage, a constrained spectral clustering algorithm is, based on graph theory, applied to transform the problem of islanding sections searching to the generalized eigenvalue problem, and the improved k-means algorithm is applied to get the real-time optimal islanding sections quickly. Finally, the correctness, effectiveness and rapidity of the proposed method are verified by the simulation in the IEEE 118-bus system.

Key words： Active islanding wind farm integration generator coherency identification optimal islanding sections search the improved k-means algorithm

收稿日期: 2018-08-01 出版日期: 2019-05-29

PACS:

TM712

基金资助:国家电网公司科技资助项目（考虑第三道防线的规划电网多级网架结构优化方法研究）

通讯作者: 刘扬,男,1996年生,硕士研究生,研究方向为电力系统运行与控制。E-mail:1119503220@qq.com

作者简介: 唐飞,男,1982年生,副教授,研究方向为电力系统暂态稳定、电力系统紧急控制策略、智能电网通信技术等。E-mail:tangfei@whu.edu.cn

引用本文:

唐飞, 刘扬, 施浩波, 邹宏亮, 周芳. 一种考虑风电场并网的大电网快速主动解列策略[J]. 电工技术学报, 2019, 34(10): 2092-2101. Tang Fei, Liu Yang, Shi Haobo, Zou Hongliang, Zhou Fang. A Fast Active Islanding Strategy for Large Power Grid Considering Wind Farm Integration. Transactions of China Electrotechnical Society, 2019, 34(10): 2092-2101.

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