摘　要：在深入研究交流/多端直流(AC-MTDC)系统潮流算法的基础上,提出一种新的潮流计算模型.该模型将换流器等效为依赖于换流器端交流电压和控制角的PQ负荷,运用改进的Broyden's迭代法(逆拟牛顿迭代法)求解潮流方程.运用该方法计算潮流时,只需指定直流有功功率,而且当直流系统控制方式发生变化后不需重新推导Jacobian矩阵中的偏导公式.数值算例表明,该方法具有较高的灵活性和计算效率.
关键词：交流/多端直流系统;潮流算法;逆拟牛顿迭代法;统一改进法
分类号：TM712 　文献标识码：B
文章编号：1004-9649(2008)02-0021-05

An approach to AC-MTDC power flow

ZHUANG Hui-min　 XIAO Jian　

基金项目：国家自然科学基金资助项目(60674057);高等学校博士学科点专项科研基金资助项目(20060613003)
作者简介：庄慧敏(1976-),女,湖北襄樊人,博士研究生,从事电力系统电压稳定分析与控制方面的研究.E-mail:zhmcyj@163.com
作者单位：庄慧敏（西南交通大学,电气工程学院,四川,成都,610031）　
　　　　　 肖建（西南交通大学,电气工程学院,四川,成都,610031）　

参考文献：

[1]陆进军,黄家裕.一种高效灵活的电力系统多端直流潮流算法[J].电力系统自动化,2000,24(6):48-50.LU Jin-jun,HUANG Jia-yu.A versatile multi-terminal HVDC power flow method[J].Automation of Electric Power Systems,2000,24(6):48-50.
[2]徐政.交流等值法交直流电力系统潮流计算[J].中国电机工程学报,1994,14(3):1-6.XU Zheng.AC equivalent approach for AC/DC power system load flow[J].Proceedings of the CSEE,1994,14(3):1-6.
[3]DING Q F,ZHANG B M.A new approach to AC/MTDC power flow[C]//Proceedings of the 4th International Conference on Advances in Power System Control,Operation and Management,APSCOM-97,1997.Hong Kong:689-694.
[4]FAN Y K,NIEBUR D,NWANKPA C O,et al.Multiple power flow solutions of small integrated AC/DC power systems[C]//Proceedings of the IEEE 2000 International Symposium on Circuits and Systems,2000.Geneva (Switzerland):224-227.
[5]MUSTAFA W M,ABDUL-KADIR F A.A modified approach for load flow analysis of integrated AC-DC power systems[J].TENCON proceedings,2000,2 (24):108-113.
[6]PANOSYAN A,OSWALD R G.Modified Newton-Raphson load-flow analysis for integrated ac/dc power systems[C]//UPEFC Conference,2004.Bristol,UK:1223-1227.
[7]刘崇茹,张伯明,孙宏斌,等.多控制方式下交直流系统潮流算法改进[J].电力系统自动化,2005,29(21):25-31.LIU Chong-ru,ZHANG Bo-ming,SUN Hong-bin,et al.Advanced AC-DC power flow algorithm considering various controls[J].Automation of Electric Power Systems,2005,29 (21):25-31.
[8]刘崇茹,张伯明,孙宏斌.交直流系统潮流计算中换流变压器分接头的调整方法[J].电网技术,2006,30(9):22-27.LIU Chong-ru,ZHANG Bo-ming,SUN Hong-bin.A method of adjusting tap of converter transformer for load flow calculation of AC/DC power system[J].Power System Technology,2006,30 (9):22-27.
[9]ARRILLAGE J,WASTON N A.Computer modeling of electrical power systems[M].2nd ed.New York:John Wiley & Sons Ltd.,2001.
[10]徐政.交直流电力系统动态行为分析[M].北京:机械工业出版社,2004.XU Zheng.Dynamic analysis of AC/DC power system[M].Beijing:Machine Industry Press,2004.
[11]KUNDURP.电力系统稳定与控制[M].北京:中国电力出版社,2002.KUNDUR P.Power system stability and control[M].Beijing:China Power Press,2002.
[12]王锡凡,方万良,杜正春.现代电力系统分析[M].北京:科学出版社,2003.WANG Xi-fan,FANG Wan-liang,DU Zheng-chun.Modern power system analysis[M].Beijing:Science Press,2003.
[13]文世鹏,张明.应用数值分析[M].北京:石油工业出版社,2005.WEN Shi-peng,ZHANG Ming.Application numerical analysis[M].Beijing:Petrol Industry Press,2005.
[14]陈怡,蒋平,万秋兰,等.电力系统分析[M].北京:中国电力出版社,2005.CHEN Yi,JIANG Ping,WAN Qiu-lan,et al.Power system analysis[M].Beijing:China Power Press,2005.