Guizhou Power Grid Limited Liability Company Power Dispatching Control Center
State Key Laboratory of HVDC Technology (China Southern Power Grid Research Institute)
Guangdong Province New Energy Power System Intelligent Operation and Control Enterprise KeyLaboratory

主动解列是保障电力系统稳定性,避免大面积停电的重要措施,通常将解列断面搜索抽象为单目标优化问题的研究方法,对于含新能源的复杂系统解列后孤网子系统的稳定性关注不足,所确定的解列断面合理性存疑。针对这一问题,文章提出了一种考虑含新能源孤网稳定特性的主动解列断面搜索方法。首先,基于节点间电气联系和潮流分布,以最小潮流冲击为目标确定初始解列断面;然后,考虑关键节点的电气耦合连接度和新能源渗透率,在初始解的邻域搜索空间中搜索最终的解列断面,以提升解列后孤网子系统的稳定性;最后,在新英格兰10机39节点系统中对所提解列断面搜索方法进行了仿真分析和验证。仿真结果验证了该方法的有效性和优越性。

Controlled islanding is an important measure to ensure the stability of power system andavoid large -scale power outages. However, the traditional researches method that regard thesplitting surface determination as a single objective optimization problem neglect the stability ofisolated subsystem. Therefore, a control islanding strategy considering the stability of subsystemwith new energy is proposed in this paper. Firstly, the initial islanding surface with the minimumpower-flow disruption is obtained based on the electrical connections and power flow distributionbetween nodes. Then considering the electrical coupling connectivity of key nodes and thepenetration of new energy, the final islanding surface is searched in the neighborhood searchspace of the initial solution, to improve the stability of the isolated network subsystem aftersplitting. Finally, the proposed method is analyzed based on the New England-bus system, andthe simulation results validate the effectiveness and advancement of the method.

南方电网重点科技项目(066500KK52210040)