基于暂态关键特征逻辑推理的复杂电网响应驱动暂态稳定性判别  

Response-Driven Transient Stability Assessment for Complex Power Grids Based on Logical Reasoning with Transient Key Feature

作　　者：杨浩[1] 伍柏臻 刘铖 孙正龙 蔡国伟 刘萌 Yang Hao;Wu Baizhen;Liu Cheng;Sun Zhenglong;Cai Guowei;Liu Meng(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education Northeast Electric Power University,Jilin 132012,China;State Grid Shandong Electric Power Research Institute,Jinan 250003,China)

机构地区：[1]现代电力系统仿真与绿色电能新技术教育部重点实验室(东北电力大学),吉林132012 [2]国网山东省电力公司电力科学研究院,济南250003

出　　处：《电工技术学报》2024年第13期3943-3955,共13页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划资助项目(2021YFB2400800)。

摘　　要：暂态稳定实时性判别是响应式稳定控制的核心,新能源和直流输电并网下电网的结构、运行和响应特征复杂程度骤增,现有实时性判别方法的准确性和泛化性面临挑战。该文针对含新能源和直流输电的复杂电网暂态稳定性,提出了一种基于可量测暂态能量特征的自适应逻辑推理判稳方法,实现无电网模型依赖且具有可解释性的实时性稳定性判别。首先,基于发电机转子运动的能量关系,结合特勒根定理构建了面向复杂电网响应信息的能量函数并论证了其守恒性;然后,根据系统动能-势能能量转换特征定义了稳定预判因数,并结合最大功角差构成了判稳关键特征量,提出了基于自适应模糊推理神经网络(ANFIS)的关键特征量与稳定状态之间的映射模型,实现了暂态稳定性实时推理评估;最后,在简单系统中量化分析了关键特征量与系统稳定性间的关系,并在修改后含新能源与直流输电的IEEE10机39节点系统中验证了该文所提方法的有效性与泛化性。Real-time transient stability assessment is the core of response-driven stability control.With renewable energy and DC transmissions connecting to power systems,the complexity of grid’s structure,operation and characteristics increases significantly,which have challenged the effectiveness and accuracy of existing stability assessment methods.For real-time stability assessment in the complex power system including renewable energy and DC transmissions,an adaptive network based fuzzy inference system(ANFIS)based model-free and interpretable stability assessment method was proposed by using measurable transient energy features.First,based on the energy relation of generator motion equation and the Tellegen’s theorem,the transient energy function using the response information of the complex grid was constructed and its energy conservation was also validated.Then,according to the conversion characteristic between kinetic energy and potential energy,the stability prediction factor was defined,which was combined with maximum angle deviation to obtain the key features of the stability judgment.A mapping model between the key features and stability status based on ANFIS adaptive logic reasoning was proposed to realize real-time prediction of transient stability.Finally,the quantitative analysis of the relationship between the key features and system stability status was illustrated in a simple system,and the effectiveness and generalization of the proposed method were verified in the modified IEEE 10-machine 39-bus system with new energies and DC transmissions.Firstly,based on the energy relation of the generator rotor movement and the Tellegen’s theorem,a refined energy function model was developed by using the response information of a complex grid,and the energy conservation property of the model was proven.The energy function model can depict the energy response characteristics of various components in the system.By introducing the virtual impedance branch,the potential energy of each component can be convenien

关 键 词：暂态稳定性 响应驱动 特勒根定理 能量函数 复杂电网 自适应逻辑推理 

分 类 号：TM712[电气工程—电力系统及自动化]