VSCHVDC稳态特性与潮流算法的研究.pdfVIP

第 25 卷 第 6 期 中 国 电 机 工 程 学 报 Vol.25 No.6 Mar. 2005 2005 年 3 月 Proceedings of the CSEE ©2005 Chin.Soc.for Elec.Eng. 0258-8013 (2005) 06-0001-05 TM74 A 470 40 文章编号： 中图分类号： 文献标识码： 学科分类号： ⋅ VSC-HVDC 稳态特性与潮流算法的研究 1 1 2 1 郑郑郑 ，周孝信 ，李若梅 ，盛灿辉 (1．中国电力科学研究院，北京市 海淀区 100085 ；2．中国电机工程学会，北京市 宣武区 100761) STUDY ON THE STEADY CHARACTERISTIC AND ALGORITHM OF POWER FLOW FOR VSC-HVDC 1 1 2 1 ZHENG Chao , ZHOU Xiao-xin , LI Ruo-mei , SHENG Can-hui (1. China Electric Power Research Institute, Haidian District, Beijing 100085, China; 2. Chinese Society for Electrical Engineering, Xuanwu District, Beijing 100761, China ) ABSTRATC: This paper makes detailed analysis to the steady 关键词：电力系统；电压源换流器；新型高压直流输电；功 power characteristics and the control patterns of VSC-HVDC. 率特性；数学模型；潮流计算 Based on the steady-model of VSC-HVDC, its mathematical model for Newton method power flow calculation is developed. 1 引言 Taking into account that most control objectives of VSC-HVDC are AC quantities, a power flow algorithm is 基于相控换流器(PCC)技术的传统高压直流输 proposed which calculate AC and DC alternately with 电(HVDC)作为一项日趋成熟的输电技术在远距离 consideration of DC variable constraints. Convergence speed of 大容量输电、海底电缆送电、交流系统间非同步互 this algorithm is fast when all converters’ modulation ratio 联等方面得到了广泛的应用[1-3] 。然而，由于技术及 within their limits, otherwise, the speed may become slow due to the interaction between AC and DC. Results from numerical 经济的原因，HVDC 在近距离小容量的输电场合却 example prove