山东电力技术2024，Vol.51Issue(7)：35-44,10.DOI:10.20097/j.cnki.issn1007-9904.2024.07.005
考虑节点惯量的新型电力系统连锁故障仿真模型及关键节点辨识
Novel Power System Fault Simulation Model and Key Node Identification
摘要
Abstract
In a new type of power system,the large amount of access to new energy generation decreases the rotational inertia of the whole system,which leads to the increased risk of interlocking faults.To address this problem,a simulation model of grid interlocking faults taking into account the node inertia is proposed.Considering the load ratio,voltage limit,and node inertia of the grid nodes,the state of the grid components and the state transition rules in the model are determined through the electrical coupling relationship between the nodes and the support of the inertia.Then,the integrated system integrity index,the relative value of loss load,and the system load ratio are given as the comprehensive weakness index for recognizing the critical nodes of the power grid.Finally,using the IEEE39 grid arithmetic and grid data of a province,the critical nodes of the grid are identified using the integrated weak degree index under different new energy percentages,and the simulation results verify the reasonableness and feasibility of the constructed model.In turn,it provides a reference for the prevention of cascading failures in new power systems.关键词
新型电力系统/节点惯量/连锁故障/薄弱度指标/关键节点辨识Key words
ew power system/nodal inertia/cascading failures/weakness indicators/critical node identification分类
信息技术与安全科学引用本文复制引用
黄振宁,孙宁,邵华强,李云婧..考虑节点惯量的新型电力系统连锁故障仿真模型及关键节点辨识[J].山东电力技术,2024,51(7):35-44,10.基金项目
国网山东省电力公司科技项目(520605220003). Science and Technology Project of State Grid Shandong Electric Power Company(520605220003). （520605220003）
