Simulation and Analysis of Cascading Faults in Integrated Heat and Electricity Systems Considering Degradation Characteristics  

作　　者：Hang Cui Hongbo Ren Qiong Wu Hang Lv Qifen Li Weisheng Zhou 

机构地区：[1]College of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai,200090,China [2]Shanghai Non-Carbon Energy Conversion and Utilization Institute,Shanghai,200240,China [3]College of Policy Sciences,Ritsumeikan University,Kyoto,603-8577,Japan

出　　处：《Energy Engineering》2024年第3期581-601,共21页能源工程（英文）

基　　金：supported by Shanghai Rising-Star Program(No.22QA1403900);the National Natural Science Foundation of China(No.71804106);the Noncarbon Energy Conversion and Utilization Institute under the Shanghai Class IV Peak Disciplinary Development Program.

摘　　要：Cascading faults have been identified as the primary cause of multiple power outages in recent years.With the emergence of integrated energy systems(IES),the conventional approach to analyzing power grid cascading faults is no longer appropriate.A cascading fault analysis method considering multi-energy coupling characteristics is of vital importance.In this study,an innovative analysis method for cascading faults in integrated heat and electricity systems(IHES)is proposed.It considers the degradation characteristics of transmission and energy supply com-ponents in the system to address the impact of component aging on cascading faults.Firstly,degradation models for the current carrying capacity of transmission lines,the water carrying capacity and insulation performance of thermal pipelines,as well as the performance of energy supply equipment during aging,are developed.Secondly,a simulation process for cascading faults in the IHES is proposed.It utilizes an overload-dominated development model to predict the propagation path of cascading faults while also considering network islanding,electric-heating rescheduling,and load shedding.The propagation of cascading faults is reflected in the form of fault chains.Finally,the results of cascading faults under different aging levels are analyzed through numerical examples,thereby verifying the effectiveness and rationality of the proposed model and method.

关 键 词：Cascading fault degradation characteristics integrated heat and electricity system multi-energy flow 

分 类 号：TM71[电气工程—电力系统及自动化]