计及短路故障影响的含风电电力系统恢复决策优化方法  

Optimization Method of Restoration Decision-making for Wind Integrated Power System Considering the Effects of Short-circuit Fault

作　　者：李少岩[1] 张友好 顾雪平[1] LI Shaoyan;ZHANG Youhao;GU Xueping(School of Electrical&Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北省保定市071003

出　　处：《中国电机工程学报》2023年第20期7827-7841,共15页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52107092,U22B2099);中央高校基本科研业务费专项基金(2021MS063)。

摘　　要：随着新型电力系统的加速建设,我国风电等新能源渗透率逐年增加,给系统恢复控制带来新的机遇与挑战。风电提供的功率支持可加速系统恢复进程,但在故障扰动下,风电机组可能大量脱网,甚至引发系统再次崩溃。针对以上问题,该文提出一种计及短路故障影响的含风电电力系统恢复决策优化方法。首先,分析短路故障对电力系统快速、安全恢复的影响,讨论系统恢复中计及短路故障影响的必要性。其次,综合考虑短路故障切除前后影响,提出短路故障下的失负荷风险模型。然后,考虑风电及常规机组恢复特性,建立机组启动、并网及运行约束。同时,综合网络潮流及拓扑约束,构建系统恢复决策优化的混合整数线性规划模型。最后,结合滚动优化策略,动态切换系统恢复模式,实现模型的高效求解。采用IEEE-39和IEEE-118节点系统验证所提方法的有效性。With the accelerated construction of new power systems,the penetration rate of new energy sources,such as wind power,has been increasing yearly in China,bringing new opportunities and challenges to system restoration and control.The power support provided by wind power can accelerate the system restoration process.However,under fault disturbance,wind turbines may be disconnected in large numbers and even cause the system to collapse again.In response to the above issues,this article proposes an optimization method for restoration decision-making of wind power systems that considers the impact of short-circuit faults.First,the impact of short-circuit faults on the rapid and safe restoration of power systems is analyzed,and the necessity of considering the impact of short-circuit faults in system restoration is discussed.Secondly,considering the effects before and after the removal of short-circuit faults,a loss of load risk model under shortcircuit faults is proposed.Then,considering the restoration characteristics of wind power and conventional units,constraints are established for unit startup,network connection,and operation.Furthermore,a mixed-integer linear programming model is constructed to optimize the restoration decision-making process,integrating power flow and network reconfiguration constraints.Finally,combined with the rolling optimization strategy,the system restoration mode is dynamically switched to achieve the efficient solution of the model.The effectiveness of the proposed method is verified by IEEE-39 and IEEE-118 systems.

关 键 词：大停电 短路故障 风电 电力系统恢复 混合整数线性规划 

分 类 号：TM73[电气工程—电力系统及自动化]