摘要
大停电后的系统恢复过程中,系统对外界扰动抵御能力较低。尤其是网架重构阶段,输电系统尚不完整,如发生针对电力系统的蓄意物理攻击,将对系统恢复造成严重影响,其引发的保护拒动、误动等继发性故障还将对系统造成二次冲击。为量化评估恢复过程中蓄意物理攻击及其继发故障对网架恢复的影响,提出一种综合考虑蓄意物理攻击及其继发故障影响的骨干网架韧性评估方法。首先,基于攻防博弈模型,提出蓄意物理攻击下的系统失负荷量计算模型。其次,考虑扰动后潮流转移引发的过载保护误动,构建蓄意物理攻击及继发故障场景集。最后,基于扰动前后故障场景集下的被迫失负荷情况,提出骨干网架韧性定量评估方法,并构建考虑韧性主动提升的骨干网架优化模型,以IEEE-57节点系统算例验证了所提韧性评估方法的有效性。
During the system restoration process after a major power outage,the system has a low resistance to external disturbances.The transmission system is not yet complete,particularly during the network reconstruction phase.If a deliberate physical attack occurs against a power system,it can have a severe impact on system restoration,causing secondary faults impacting the system such as protection failure and disoperation.To quantitatively evaluate the impact of deliberate physical attacks and their secondary faults on the network restoration process,a comprehensive skeleton network resilience assessment method is proposed.First,a model for calculating the system load loss under deliberate physical attacks is proposed based on the attack-defense game model.Second,considering the overload protection malfunction caused by power flow transfer after a disturbance,a set of deliberate physical attacks and secondary fault scenarios are constructed.Finally,based on the forced load loss in the fault scenario set before and after the disturbance,a quantitative assessment method for skeleton network resilience is proposed,and an optimization model of the skeleton network considering active resilience improvement is constructed.An example of an IEEE-57 node system is used to verify the effectiveness of the proposed resilience assessment method.
作者
张友好
李少岩
顾雪平
王洪涛
ZHANG Youhao;LI Shaoyan;GU Xueping;WANG Hongtao(School of Electrical&Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China;Key Laboratory of Power System Intelligent Dispatching and Control of Ministry of Education(Shandong University),Jinan 250061,China)
出处
《电力建设》
CSCD
北大核心
2023年第12期95-105,共11页
Electric Power Construction
基金
国家自然科学基金项目(52107092)
中央高校基本科研业务费专项基金(2021MS063)。
关键词
骨干网架
韧性评估
蓄意物理攻击
过载保护
电力系统恢复
skeleton network
resilience assessment
deliberate physical attacks
overload protection
power system restoration
