首页|An Efficient Method to Estimate Admittance of Black-boxed Inverter-based Resources for Varying Operating Points
An Efficient Method to Estimate Admittance of Black-boxed Inverter-based Resources for Varying Operating Points
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维普
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Traditional analytical approaches for stability as-sessment 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 mea-surements,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 black-boxed 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.
Admittance estimationblack boxinverter-based resourcemeasurement erroroperating point
维普
万方数据
