直流输电控制系统机电暂态模型参数校核误差评价方法

以电网换相换流器为核心的高压直流输电系统（LCC-HVDC，以下简称直流输电系统）的仿真分析普遍采用机电暂态模型及参数，但其参数校核缺乏实用的误差评价方法。基于电力系统仿真可信度评估的相似度法、层次分析法（analytic hierarchy process，AHP）思想，针对直流输电控制系统机电暂态模型和部分关键参数，提出了划分区间独立计算和配置权重总体校验的误差评价方法，并给出较为合理的误差评价标准。该方法将直流输电系统仿真与试验的时间序列划分为多个区间，采用AHP法对各区间配置权重系数，进而计算各区间及总体的误差指标。通过实际直流工程试验数据验证了误差评价方法的有效性。该方法可评价整个时间序列各阶段的仿真准确度及总体仿真效果，为直流输电控制系统机电暂态模型的参数校核提供技术支撑。

Error Evaluation Method for Parameter Check of Electromechanical Transient Model of HVDC Transmission Control System

At present, the electromechanical transient model and parameters are generally used for simulation analysis of the LCC-HVDC transmission system with the power grid commutation converter as the core, but there is no practical error evaluation method for checking the parameters. Aiming at the electromechanical transient model and key parameters of the DC transmission control system, this paper proposes an error evaluation method for independent calculation of divided intervals and overall verification of configuration weights, based on the similarity method and analytic hierarchy process idea for power system simulation credibility evaluation, and a reasonable error evaluation standard is also given. Firstly the time series of the HVDC transmission system simulation and experiment are divided into multiple intervals, and the analytic hierarchy process (AHP) method is used to configure the weight coefficients for each interval. And then the error index of each interval and the overall error index are calculated. The validity of the error evaluation method is verified with test data of actual DC projects. The proposed method can evaluate the simulation accuracy and overall simulation effect of each stage of the entire time series, and can provide a technical support for the parameter verification of the electromechanical transient model of the DC transmission control system.