送端电网新能源规划中的场景化稳定问题分析与校核  

Scenario-based stability analysis and check of new energy generation planning in sending power grid

作　　者：何向刚 张树卿[2] 马蕊 张童童 张东辉[2] HE Xianggang;ZHANG Shuqing;MA Rui;ZHANG Tongtong;ZHANG Donghui(Power Grid Planning Research Center,Guizhou Power Grid Co.,Ltd.,Guiyang 550000,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]贵州电网有限责任公司电网规划研究中心,贵州贵阳550000 [2]清华大学电机工程与应用电子技术系,北京100084

出　　处：《电工电能新技术》2024年第12期72-82,共11页Advanced Technology of Electrical Engineering and Energy

摘　　要：新能源替代促使送端电力系统的稳定形态和机理发生转变。然而电源规划方案的校核仍基于常规电网暂态稳定仿真,不能涵盖和适用于新的稳定问题,若采用电磁暂态仿真校核,工作量巨大而难以实现。对此,本文归纳高比例新能源送端电网稳定问题形态和新能源规划新稳定问题的三个场景,分析制约新能源送出稳定问题的机理,提出高效可行的稳定风险评估指标和规划方案校核方法。最后,基于仿真验证了三个场景下本文所提规划方案稳定性校核方法的快速性和有效性。A large amount of new energy generation connected to the grid changes the stability problem of the power transmission system.New types of stability problems and new mechanisms appear,which fundamentally affect the feasibility of the planning scheme.However,only the transient stability simulation for the large power grid is employed to check the power supply planning schemes because the traditional transient stability simulation is not applicable to the new stability forms.Due to the enormous workload and high complexity,the electromagnetic transient simulation is unsuitable for checking new energy generation planning schemes for actual power systems.Thus,based on a review of the new stability problems of the power grid containing a high proportion of new energy generation,this paper summarizes three scenarios where new stability problems emerge in the new energy planning schemes.Then the mechanism of the stability problems restricting the new energy sending and transmission is analyzed.Furthermore,quantitative risk assessment methods are proposed indicators for assessing stability risk that are more efficient and feasible than existing assessment methods.Finally,the simulation verifies the existence of three types of new stability risks,and also verifies that the methods proposed in this paper can quickly and effectively assess the stability risks.

关 键 词：新能源规划 打捆外送暂态稳定 次同步谐振/振荡 宽频振荡 稳定校核 

分 类 号：TM732[电气工程—电力系统及自动化]