台风扰动下计及线路老化与连锁故障的输电网韧性评估  

Transmission System Resilience Assessment Considering Line Aging and Cascading Failures Under Typhoon Disturbances

作　　者：张信哲 秦文萍[2,3] 朱志龙 逯瑞鹏 韩肖清 李思羽[2,3] ZHANG Xinzhe;QIN Wenping;ZHU Zhilong;LU Ruipeng;HAN Xiaoqing;LI Siyu(Zhangjiakou Power Supply Company,State Grid Jibei Electric Power Co.,Ltd.,Zhangjiakou 075000,Hebei Province,China;Shanxi Key Lab of Power System Operation and Control(Taiyuan University of Technology),Taiyuan 030024,Shanxi Province,China;Key Laboratory of Cleaner Intelligent Control on Coal&Electricity(Taiyuan University of Technology),Ministry of Education,Taiyuan 030024,Shanxi Province,China)

机构地区：[1]国网冀北电力有限公司张家口供电公司,河北省张家口市075000 [2]电力系统运行与控制山西省重点实验室(太原理工大学),山西省太原市030024 [3]煤电清洁控制教育部重点实验室(太原理工大学),山西省太原市030024

出　　处：《电网技术》2024年第10期4094-4105,I0044,I0045,I0043,共15页Power System Technology

基　　金：国家自然科学基金项目(52477115);国家自然科学基金联合基金项目(U23A20649)。

摘　　要：针对传统韧性评估方法对输电网老化效应及其诱发的连锁故障考虑不足的问题,以台风作为电力系统外部干扰的代表,提出一种台风扰动下计及输电线路老化与连锁故障的输电网韧性评估方法。首先,考虑老化效应对输电线路风致故障率和安全过载能力的影响,以故障自然演化时间为切入点,提出一种计及输电线路老化的输电网双时间维度故障演化模型,包括台风时间维度和连锁故障时间维度。其次,基于台风灾害下电网性能变化曲线,提出考虑时间分辨率的系统脆弱率和恢复率2个输电网韧性指标;基于电网性能和系统服役年限关联曲线,提出考虑不同服役年限的输电网韧性指标。然后,根据台风扰动下输电网性能演化特征,确定基于上述2类曲线评估输电网韧性的整体框架和流程。最后,在IEEE 39节点系统上进行算例仿真,结果表明所提方法能够有效评估不同服役年限输电网的韧性。A resilience assessment approach tailored for typhoon-perturbed transmission systems is introduced to address the limitations of traditional resilience assessment methods,which inadequately consider aging effects and cascading failures.This method incorporates the aging and cascading failure phenomena of transmission lines.Initially,a dual-time dimension fault evolution model for transmission systems is developed,accounting for line aging,wind-induced failure rates,and safe overload capacity.This model integrates the temporal dimensions of typhoon duration and cascading failures.Subsequently,two time-resolved resilience metrics for transmission grids,namely the system vulnerability and recovery rates,are formulated based on the system performance trajectory during typhoon events.Additionally,resilience indicators tailored for transmission systems with varying service lives are proposed,leveraging the correlation between system performance and aging.The overarching framework and assessment process for transmission system resilience are delineated by leveraging the evolutionary characteristics of transmission system performance under typhoon disturbances.Finally,a simulation study on the IEEE 39-bus system demonstrates that the proposed method effectively evaluates the resilience of transmission grids with diverse service lifetimes.

关 键 词：极端天气 输电网 连锁故障 老化效应 韧性评估 

分 类 号：TM721[电气工程—电力系统及自动化]