An Efficient Method to Estimate Admittance of Black-boxed Inverter-based Resources for Varying Operating Points  

作　　者：Weihua Zhou Bin Liu Nabil Mohammed Behrooz Bahrani 

机构地区：[1]Department of Electrical and Computer Systems Engineering,Monash University,Melbourne 3800,Australia [2]Energy Centre,Commonwealth Scientific and Industrial Research Organisation(CSIRO),Newcastle 2300,Australia.He is now with the Network Planning Division,Transgrid,Sydney 2000,Australia

出　　处：《CSEE Journal of Power and Energy Systems》2024年第1期421-426,共6页中国电机工程学会电力与能源系统学报（英文）

基　　金：funded by the Australian Research for Global Power System Transformation(Stage 2)Topic 2 and partially funded by the Australian Renewable Energy Agency(Grant No.:2023/ARP010)。

摘　　要：Traditional analytical approaches for stability assessment of inverter-based resources(IBRs),often requiring detailed knowledge of IBR internals,become impractical due to IBRs’proprietary nature.Admittance measurements,relying on electromagnetic transient simulation or laboratory settings,are not only time-intensive but also operationally inflexible,since various non-linear control loops make IBRs’admittance models operating-point dependent.Therefore,such admittance measurements must be performed repeatedly when operating point changes.To avoid time-consuming and cumbersome measurements,admittance estimation for arbitrary operating points is highly desirable.However,existing admittance estimation algorithms usually face challenges in versatility,data demands,and accuracy.Addressing this challenge,this letter presents a simple and efficient admittance estimation method for blackboxed IBRs,by utilizing a minimal set of seven operating points to solve a homogeneous linear equation system.Case studies demonstrate this proposed method ensures high accuracy across various types of IBRs.Estimation accuracy is satisfying even when non-negligible measurement errors exist.

关 键 词：Admittance estimation black box inverterbased resource measurement error operating point 

分 类 号：TM464[电气工程—电器]