极端灾害下考虑电网和天然气网络侧的综合能源系统弹性评估  

Resilience evaluation of comprehensive gas-energy system considering power grid and natural gas network under extreme disasters

作　　者：罗鹏 刘永慧(指导)[1] 姚晓东 LUO Peng;LIU Yonghui;YAO Xiaodong(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《上海电机学院学报》2022年第6期332-338,345,共8页Journal of Shanghai Dianji University

基　　金：国家自然科学基金项目(61803253)。

摘　　要：针对电气综合能源系统在极端扰动下发生的大规模故障,构建了考虑电网和天然气网络受到极端事件扰动时的综合能源系统模型。首先,基于传统的随机攻击模型,进一步扩大节点攻击的随机性与危害性,采用故障节点传播策略,生成极端灾害场景。其次,针对极端场景中通常忽略天然气网络这一问题,建立了电网和天然气网络同时受到极端事件扰动时的系统模型,并通过最优切负荷目标函数计算网络负荷缺额。然后,以配电网负荷曲线缺失百分比作为弹性指标,采用蒙特卡罗算法,对电气综合能源系统进行弹性评估。最后,对IEEE39以及20节点的天然气网络构成的电气综合能源系统进行仿真,验证了提出的电气综合能源系统能有效提高弹性评估的准确性。A comprehensive energy system model considering both the power grid and natural gas network disturbed by extreme events is proposed to deal with large-scale failures of the comprehensive gas-energy systems under extreme disturbances.First,based on the traditional random attack model,the randomness and harmfulness of node attacks are further enlarged,and the failure node propagation strategy is adopted to generate the extreme disaster scenario.Second,to solve the problem that the natural gas network is usually ignored in extreme scenarios,a system model is established when both the power grid and natural gas network are disturbed by extreme events,and the network load gap is calculated by the optimal load-cutting objective function.Then,the Monte Carlo algorithm is used to evaluate the elasticity of the comprehensive gas-energy system by taking the missing percentage of the distribution network load curve as the elasticity index.Finally,through the simulation of the comprehensive gas-energy system composed of IEEE 39 and 20 nodes natural gas network,it is verified that the proposed comprehensive gas-energy system can effectively improve the accuracy of elastic evaluation.

关 键 词：电气综合能源系统 极端灾害 弹性评估 P2G技术 

分 类 号：TM743[电气工程—电力系统及自动化]