潘明九,兰洲,余智芳,郑迪
PAN Mingjiu,LAN Zhou,YU Zhifang,ZHENG Di

• 1:国网浙江省电力有限公司经济技术研究院
• 2:中国计量大学机电工程学院

摘要(Abstract)：

为解决电力系统潮流转移引起的线路过载跳闸和连锁故障问题，提出一种计及储能与线路电热特性的电网过载优化控制策略。首先分析了输电线路的电热变化特性，基于实际电网中输电通道所覆盖的各气象观测站数据，形成考虑气象分布的输电线路导线温度计算方法，提高线路过载能力的估算精度。进一步以控制代价最小为目标，建立含储能的电力系统过载优化控制模型，利用模拟退火粒子群优化算法求解模型，快速给出最优控制量及调整量，从而充分利用储能调控能力与线路耐受过载能力，有效避免电网连锁故障的发生。最后，在改进的IEEE 39节点系统中验证了所提控制方法的有效性。
To solve the problems of line overload tripping and cascading faults caused by power flow transfer in power systems, an optimal control strategy for grid overload considering energy storage and electrothermal characteristics of transmission lines is proposed. Firstly, the variation of electrothermal characteristics of transmission lines is analyzed. Based on meteorological data from various observation stations covered by transmission corridors in practical power grids, a method for calculating conductor temperatures considering meteorological distribution is formulated to enhance the accuracy of estimating line overload capacity. Furthermore, to minimize the control cost, an optimized control model incorporating energy storage for power system overload is established. The simulated annealing particle swarm optimization algorithm is used to solve the model, swiftly determining the optimal control and adjustment quantities and thereby fully leveraging the energy storage regulation capability and line overload tolerance capacity to effectively prevent cascading faults in the power grid. Finally, the effectiveness of the proposed control method is validated using the improved IEEE 39-node system.

关键词(KeyWords)： 输电线路;储能;连锁故障;线路过载;优化控制
transmission line;energy storage;cascading fault;line overload;optimal control

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目（5211JY20001U）

作者(Author): 潘明九,兰洲,余智芳,郑迪
PAN Mingjiu,LAN Zhou,YU Zhifang,ZHENG Di

DOI: 10.19585/j.zjdl.202309012

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