电网技术2025，Vol.49Issue(10)：4019-4027,中插6-中插8,12.DOI:10.13335/j.1000-3673.pst.2025.0486
高惯量储能型调相机T型等效电路参数辨识
Parameter Identification for the T-type Equivalent Circuit of a High-inertia Energy Storage Synchronous Condenser
摘要
Abstract
Traditional analytical methods for determining the T-type equivalent circuit parameters of high-inertia energy storage synchronous condensers suffer from computational inaccuracies and time-varying magnetic saturation effects.To address these issues,this study proposes an innovative hybrid parameter identification model that combines an online parameter identification method with offline experimental testing.The online model,based on the mathematical representation of the doubly-fed induction machine in a two-phase synchronous rotating coordinate system,dynamically identifies stator inductance,excitation inductance,and rotor inductance in real-time using operational electrical quantities.The offline model employs no-load and grid-connected active power adjustment tests to achieve precise parameter measurements.A high-inertia energy storage condenser grid transient simulation model was developed,integrating the online parameter identification algorithm to update controller parameters in real-time.Experimental validation was conducted using an existing doubly-fed prototype of equivalent capacity.Both simulation and experimental results demonstrate that the proposed T-type equivalent circuit parameter identification model exhibits rapid convergence,high accuracy,strong adaptability to operational conditions,and practical engineering applicability.The online identification model achieves an average convergence time of less than 0.85 seconds under charging/discharging,steady-state reactive power support,and transient switching conditions.Steady-state identification errors are controlled within 1％,while transient errors remain below 30％of the offline test results.Real-time controller parameter updates based on online identification ensure precise tracking of active and reactive power targets.Additionally,when machine parameters vary dynamically,the online model optimizes controller parameters to enhance control performance.Offline experimental tests reveal that stator inductance,excitation inductance,and rotor inductance exhibit significant excitation current-dependent characteristics,displaying a nonlinear attenuation trend as excitation current increases,further validating the necessity of parameter identification.This research improves the modeling accuracy of high-inertia energy storage condensers and refines control system parameter tuning,thereby enhancing the vector control performance of doubly-fed induction machine and the precision of grid transient simulations.The findings provide theoretical support for the intelligent control of high-inertia energy storage synchronous condensers.关键词
高惯量储能型调相机/T型等效电路/在线参数辨识/离线参数实验测试/仿真验证/实验验证Key words
high-inertia energy storage synchronous condenser/T-type equivalent circuit/online parameter identification/offline parameter experimental testing/simulation verification/experimental verification分类
信息技术与安全科学引用本文复制引用
胡金明,姚绪梁,李桂芬,胡刚,张春莉,郭超,白晶,葛旭,朱一枫..高惯量储能型调相机T型等效电路参数辨识[J].电网技术,2025,49(10):4019-4027,中插6-中插8,12.基金项目
国家重点研发计划项目:"高惯量储能型同步调相机关键技术与装备"(2023YFB2406800).Project Supported by the National Key Research and Development Program of China:"Key Technology and Equipment for High Inertia Energy Storage Synchronous Condenser"(2023YFB2406800). （2023YFB2406800）
