电力系统自动化2016，Vol.40Issue(21)：90-97,8.DOI:10.7500/AEPS20160406006
柔性直流输电系统数字物理混合仿真改进阻尼阻抗接口算法
Improved Damping Impedance Interface Algorithm of Power Hardware-in-the-loop Simulation for Flexible DC Transmission Systems
摘要
Abstract
To deal with the stability and accuracy problem caused by the power interface,an improved damping impedance interface algorithm of power hardware-in-the-loop simulation for modular multilevel converter based high-voltage direct current (MMC-HVDC) transmission systems is proposed.According to the characteristic of the power device in MMC,where off-resistance is generally much larger than on-resistance, the process of the impedance calculation is simplified. And the trapezoidal integral method with absolute stability and high precision is used to disperse the sub-module capacitance to realize highly efficient impedance matching for DIM under normal operating conditions of MMC.According to the characteristic of MMC blocking operation,a real-time impedance matching method for MMC blocking mode is proposed.A delay compensation control method based on Fourier decomposition for reconstructing the voltage signal is proposed to improve the accuracy of the simulation system.A digital simulation system of the two-terminal MMC-HVDC transmission system is developed in PSCAD/EMTDC based on the proposed interface algorithm to simulate different operating conditions.The excellent performance of stability and accuracy is seen in simulation results that show the improved damping impedance interface algorithm is able to keep the hybrid simulation system stable under different kinds of disturbances and the maximum relative error of the active power less than 1 .5%.关键词
数字物理混合仿真/模块化多电平换流器/阻尼阻抗法/阻抗实时匹配/接口延时补偿Key words
hardware-in-the-loop simulation/modular multilevel converter(MMC)/damping impedance method(DIM)/real-time impedance matching/interface delay compensation引用本文复制引用
辛业春,江守其,李国庆,王振浩,王丽馨..柔性直流输电系统数字物理混合仿真改进阻尼阻抗接口算法[J].电力系统自动化,2016,40(21):90-97,8.基金项目
国家电网公司科技发展计划项目(SGRIZLKJ 〔2015〕457号)。@@@@This work is supported by Science and Technology Development Plan of State Grid Corporation of China (No.SGRIZLKJ〔2015〕457) （SGRIZLKJ 〔2015〕457号）
