基于显式保积方法的电磁暂态初始化计算方法  

Initialization of Electromagnetic Transient Simulation Using Explicit Volume-preserving Algorithm

作　　者：汪芳宗[1] 李默 宋新立 汤涌 WANG Fangzong;LI Mo;SONG Xinli;TANG Yong(College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,Hubei Province,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China)

机构地区：[1]三峡大学电气与新能源学院,湖北省宜昌市443002 [2]中国电力科学研究院有限公司,北京市海淀区100192

出　　处：《电网技术》2023年第6期2512-2521,共10页Power System Technology

基　　金：国家电网公司科技项目(XTB51201802842)。

摘　　要：交流–电网换相换流器型高压直流输电(AC-line commutated converter high voltage direct current,AC-(LCC)DC)混联系统的电磁暂态初始化在计算模型上可表述为一个扰动的可分无源动力系统。因此,将无源动力系统的显式保积算法应用于电磁暂态初始化计算。采用相空间分析方法,对基于逐次积分法的电磁暂态初始化方法的收敛条件以及收敛速率进行了定量分析。在上述基础上,提出了一类新的、系统化的初始化计算方法,该方法计算格式简单、易于编程,在计算效率上具有明显的优势。算例结果验证了所提方法的有效性。The initialization of electromagnetic transient simulation for an AC-(LCC)DC(AC-line commutated converter high voltage direct current)hybrid system can be expressed as a perturbed separable source-free dynamical system on the computational model.Therefore,this paper introduces an explicit volume-preserving method specially invented for separable source-free systems into the electromagnetic transient initialization.Using the methodology of phase space analysis,the convergence condition and convergence rate of the initialization method based on the successive integration are quantitatively analyzed and concluded.On these bases,a new and systematic initialization algorithm is proposed in this paper.The proposed algorithm is simple in calculation format and easy to program,superior obviously in computational efficiency.The numerical example results verify the effectiveness of the proposed algorithm.

关 键 词：全电磁暂态计算 初始化 无源动力系统 保积方法 极限环 矩阵指数 

分 类 号：TM721[电气工程—电力系统及自动化]