电网技术Issue(1)：150-155,6.DOI:10.13335/j.1000-3673.pst.2015.01.023
基于权重数值积分的电力电子开关仿真插值算法
A Weight-Numerical Integration Based Interpolation Algorithm for Simulation of Power Electronic Circuit
摘要
Abstract
With wide application of power electronics apparatuses in modern power system, electromagnetic transient program (EMTP) have to face with new challenges due to high-frequent topologic sudden change caused by the action of power electronic valves. For this reason, a new interpolation algorithm for the simulation of power electronic circuits is proposed to ensure the accuracy and reliability of control system. Under the condition of global implicit trapezoidal integration, at the action point of the power electronic valve the proposed algorithm computes system variables by linear interpolation and reinitializes the control system by backward Euler method, then according to the position of the interpolation point in current simulation step the weight-numerical integration is utilized to flexibly adjust the integration step-length and the fast integration is carried out to determine the time point of the resynchronization in the simulation. During the action of power electronic valves, the proposed algorithm reinitialize the simulation via only once of interpolation, and during the reinitialization the nodal admittance matrix is kept unchanged, thus the numerical oscillation can be effectively suppressed. Under the premise of ensuring accuracy, the proposed algorithm can reduce the calculation burden and accelerate the computation, and the multiple-switch problem is taken into account. Both adaptability and effectiveness of the proposed algorithm are validated by case study.关键词
电磁暂态/权重数值积分/重新初始化/重新同步化/多重开关Key words
electromagnetic transients/weight-averaged integration/resynchronization/reinitialization/multi-switching events分类
信息技术与安全科学引用本文复制引用
黄宇鹏,汪可友,李国杰..基于权重数值积分的电力电子开关仿真插值算法[J].电网技术,2015,(1):150-155,6.基金项目
国家高技术研究发展计划863计划资助项目(2014AA052003)；国家自然科学基金资助项目(51307107)；高等学校博士学科点专项科研基金(20130073120034)；中央高校基本科研业务费专项资金资助项目。The National High Technology Research and Development Program of China 863 Program (2014AA052003) （2014AA052003）
National Natural Science Foundation of China(51307107) （51307107）
Specialized Research Fund for the Doctoral Program of Higher Education (20130073120034) （20130073120034）
the Fundamental Research Funds for the Central Universities （）
