同塔多回输电线路不平衡度分析及相序布置优化研究
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摘要
随着我国经济的持续发展,出现了越来越多的同塔多回输电线路,并且大多的同塔多回输电线路采用未换位架设,同时,系统内也出现了越来越多的电力电子等不平衡设备,使得电力系统正常运行时,不平衡问题变得越来越尖锐.
本文针对同塔多回输电线路,在前人研究的基础上,采用多端口戴维南等值方法对不平衡度问题进行分析,并考虑了相序布置的影响,主要工作如下:
第一,利用EMTP计算了输电线路的理论计算参数和MATLAB计算了序参数,并得到了理论计算参数和序参数的特点,同时,推导了相序布置对他们的影响,并分析了多回输电线路的序参数特性.
第二,对电力系统的对称分量法和相分量法进行了分析,对电力系统仿真软件用到的参数进行了处理,得出了不平衡度分析中,外网采用序分量,输电线路本身采用相分量将更加便利的结论.
第三,介绍和分析了多端口戴维南等值原理,并利用PSS/E计算得到了本文研究对象梅里,利港二个端口的等值电源和等值阻抗矩阵.
第四,在前面的分析基础上,建立了基于多端口戴维南等值的同塔多回输电线路不平衡度分析模型和不平衡度指标系统,并编写了MATLAB程序。
第五,利用线路本身不平衡度和系统不平衡度对相序布置进行了优化,并利用检修和不用运行方式对优化的结果进行了校核和评估。
With China's sustained economic development, there has been more and more multi-circuit transmission line on the same tower and most of the same tower transmission lines are not transposed, at the same time, the power system also appears more and more power electronics and so on Unbalanced equipments, which makes the imbalance becoming increasingly acute on the normal operation of power system.
In this paper, multi-circuit transmission line with the same tower is researched , on the basis of previous research, using multi-port Thevenin equivalent method to analyze the problem of imbalance, and considering the impact of the phase sequence arrangements, the main work is as follows:
First, the theoretical transmission line parameters is calculated by EMTP and the order parameter by MATLAB , and the characteristics of them are gained. Meanwhile, the impact of the phase sequence arrangements on them is derivated, and characteristics of the order parameter of the multi-circuit transmission lines are analyzed. Second, Symmetrical component and the phase component methods on the power system is analyzed,and parameters used for the power system simulation software are processed, which Obtains a conclusion ,on the imbalance analysis, the external network uses sequence components,and transmission lines itself uses phase component will be more convenient.
Third, the multi-port Thevenin equivalent of the principle is introduced and analyzed , and equivalents about two-port impedance matrix and power equivalent matrix of Merry, Lee Gang studied in this thesis are calculated by PSS / E .
Fourth, based on the analysis in the front, model on Electric Unbalanced Degree of Multi-circuit Transmission Line on the Same Tower and Imbalance indicator systems are established based on the multi-port Thevenin equivalent ,and programs are composed by MATLAB.
Fifth, the phase sequence arrangements has been optimized using unbalanced degree of lines itself and the system,and the optimized results are checked and evaluated using maintenance and operation mode on the power system.
本文针对同塔多回输电线路,在前人研究的基础上,采用多端口戴维南等值方法对不平衡度问题进行分析,并考虑了相序布置的影响,主要工作如下:
第一,利用EMTP计算了输电线路的理论计算参数和MATLAB计算了序参数,并得到了理论计算参数和序参数的特点,同时,推导了相序布置对他们的影响,并分析了多回输电线路的序参数特性.
第二,对电力系统的对称分量法和相分量法进行了分析,对电力系统仿真软件用到的参数进行了处理,得出了不平衡度分析中,外网采用序分量,输电线路本身采用相分量将更加便利的结论.
第三,介绍和分析了多端口戴维南等值原理,并利用PSS/E计算得到了本文研究对象梅里,利港二个端口的等值电源和等值阻抗矩阵.
第四,在前面的分析基础上,建立了基于多端口戴维南等值的同塔多回输电线路不平衡度分析模型和不平衡度指标系统,并编写了MATLAB程序。
第五,利用线路本身不平衡度和系统不平衡度对相序布置进行了优化,并利用检修和不用运行方式对优化的结果进行了校核和评估。
With China's sustained economic development, there has been more and more multi-circuit transmission line on the same tower and most of the same tower transmission lines are not transposed, at the same time, the power system also appears more and more power electronics and so on Unbalanced equipments, which makes the imbalance becoming increasingly acute on the normal operation of power system.
In this paper, multi-circuit transmission line with the same tower is researched , on the basis of previous research, using multi-port Thevenin equivalent method to analyze the problem of imbalance, and considering the impact of the phase sequence arrangements, the main work is as follows:
First, the theoretical transmission line parameters is calculated by EMTP and the order parameter by MATLAB , and the characteristics of them are gained. Meanwhile, the impact of the phase sequence arrangements on them is derivated, and characteristics of the order parameter of the multi-circuit transmission lines are analyzed. Second, Symmetrical component and the phase component methods on the power system is analyzed,and parameters used for the power system simulation software are processed, which Obtains a conclusion ,on the imbalance analysis, the external network uses sequence components,and transmission lines itself uses phase component will be more convenient.
Third, the multi-port Thevenin equivalent of the principle is introduced and analyzed , and equivalents about two-port impedance matrix and power equivalent matrix of Merry, Lee Gang studied in this thesis are calculated by PSS / E .
Fourth, based on the analysis in the front, model on Electric Unbalanced Degree of Multi-circuit Transmission Line on the Same Tower and Imbalance indicator systems are established based on the multi-port Thevenin equivalent ,and programs are composed by MATLAB.
Fifth, the phase sequence arrangements has been optimized using unbalanced degree of lines itself and the system,and the optimized results are checked and evaluated using maintenance and operation mode on the power system.
引文
[1]张嘉旻,葛荣良.同塔多回输电技术特点及其应用分析[J].华东电力,2005,33(7):23-26.
[2]肖立群,魏顺炎,张克宝.同塔多回输电线路塔型结构研究[J].上海电力,2009,(2):91-95.
[3]韦钢,薛敏.同杆并架4回输电线路的探讨[J].电力建设,1999,(3):4-10.
[4]陈珩.电力系统稳态分析[M].中国电力出版社,2006.
[5]李光琦.电力系统暂态分析[M].中国电力出版社,2006.
[6]辜承林,陈乔夫,熊永前.电机学[M]。华中科技大学出版社,2006.
[7] P.M.安德逊。电力系统故障分析[M]。电力工业出版社,1984.
[8]刘建华.六相输电线路的不平衡度评估[J],长沙电力学院学报,2003,18(3):45-48
[9]戴雨剑,基EMTP的高压输电线路换位研究[J].电网技术,2006,08(30):133-135.
[10]韦刚,张子阳,房正良.多回输电线路并架的不平衡性分析[J].高电压技术,2004(10):9-11.
[11]韦刚,黄金生.同塔并架多回线序参数及不平衡度计算[J].电网技术,1998,22(10):811.
[12] Carson,John R,Wave Propagation in Overhead Wires with Ground Return.Bell System Tech.J.,1926,7(5):539-554.
[13] Gross.G, Hong,H.W., A Two-Step Compensation Method for Solving Short Circuit Problems[J]. IEEE Trans on PWAS,1982,101(6):1322-1331
[14] Gross,E.T.B.,and Hesse M H. Electromagnetic Untransposed Lines . IEEE,1995,72(3):1323-1336
[15] Hesse M H. Circulating currents in parallel untransposed multi circuit line[J]. I Numerical Evaluations, IEEE Trans on PAS, 1996, 85(3):802-811
[16] Hesse M H. Circulating currents in parallel untransposed multi circuit line[J]. II. Methods for Estimating Current Unbalanced,.IEEE Trans on PAS, 1996, 85(3):812-20
[17]陈亚伦,李志国.伊敏—冯屯500kV同塔双回线不平衡度、感应电流及电流研究[J].电网技术,1995,19(6):13-17.
[18]邹林,林福昌,龙兆芝.谢静输电线路不平衡度影响因素分析[J].电网技术,2008,12(2):283-286
[19]张要强,张天光,王予平.1 000 kV同塔双回输电线路电气不平衡度及换位问题研究[J].电网技术,2009,33(1):1-5.
[20]李健,谢帮华,文武等. 750 kV同塔双回输电线路电气不平衡度及换位研究[J].电力建设,2007,28(6):133-135.
[21]汪晶毅,李志泰,潘春平.500 kV狮洋至五邑线路电气不平衡度的研究[J].南方电网技术,2009,11(03):145-149
[22]丁洪发,段献忠.不换位输电线路产生的不对称问题及解决方法[J].电网技术,2004,10(19):24-26.
[23]蓝磊,艾绍贵,黄永宁.宁夏北部220 kV电网不平衡电流的计算与分析[J].高电压技术,2010,36(2):488-494.
[24]郭志红,程慈源,苏建军.山东电网部分线路不平衡电流偏大的原因分析及改善措施.[J].电网技术,2006,30(21):32-36.
[25]李健,谢帮华,文武,阮江军.750 kV同塔双回输电线路电气不平衡度及换位研究[J].中国电力,2007,28(6):28-30
[26]王晓彤,林集明,班连庚.1 000 kV同塔双回线路不平衡度及换位方式分析[J].电网技术,2009,33(5):1-6.
[27]陈国庆,张志劲,孙才新,等.500 kV同塔双回线路导线排列方式对电气特性的影响[J].重庆大学学报,2003,26(6):60-62.
[28]张晓,周浩,赵斌财. 500 kV同塔四回输电线路最优相序布置[J].中国电力,2010,,43(6):44-46.
[29]朱迎春,樊友平,唐诚.强不对称互感输电线路序阻抗参数和不平衡性的理论计算与测量研究[J].广西电力,2009,(6):7-12.
[30]李博通,李永丽,陈莉.同塔四回线参数解耦及故障分析方法[J].电力系统保护与控制,2010,38(19)
[31]张言苍,杨洪平,郭征.电网故障计算中零序多重互感线路的处理[J].电力系统及自动化,2004,28(21)
[32]张伯明,陈寿孙.高等电力网络分析[M].清华大学出版社,1996 .
[33]余颖辉,李建华,杨增辉.同塔4回输电线路参数计算方法研究[J],上海电力,2009,(02):99-102.
[34]王安宁,陈青,周占平,改进的相分量法求解同杆双回线故障新算法[J],电力系统及自动化,2009,33(13):58-62.
[35]王安宁.基于相分量法的电力系统故障计算方法研究[博士学位论文],2009.
[36]刘为雄,蔡泽祥.基于相分量法的电力系统复故障计算[J].电力系统及自动化,2007,19(3):91-94.
[37]刘为雄,蔡泽祥,邱建.融合对称分量法与相分量法的大规模电力系统跨线故障计算[J].电工技术学报,2007,22(5):140-145.
[38]傅旭,王锡凡.同杆双回线跨线短路故障计算的等值双端电源相分量法[J].电力系统自动化,2004,28(7).
[39]李连伟,基于戴维南等值的静态电压稳定极限快速计算方法研究[硕士学位论文],2009
[40] Monticelli A.et al.Real-time external system epuivalent for on-line steady state generator outage simulation.IEEE Trans.on PAS,1979,PAS-98(3):770-779.
[41] Housos E,Irisarri G.Real time results with on-line network equivalents for control center applications.IEEE Trans.on PAS,1981, 100(12):4830-4837.
[42] DyLiacco T E,et al.An on-line topological equivalents of a power system.IEEE Trans.on PAS,1978,97(5):1550-1563.
[43] Dopazo J F,Irisarri G,Sesson A M. Real-time external system equivalents for on-line contingency analysis.IEEE Trans.on PAS,1979,98(6):2153-2171.
[44]张伯明,张海波.王志男.地区电网外网等值自动生成系统的开发和应用[J].电网技术,2005,29(24):10-15.
[45] Sun H B,Zhang B M.A systematic analysis method fou quasi-steady-state sensitivity.Electric powe system research,Sept 2002,63(2):141-147.
[46]张伯明,杨健.一种规范化的计算机故障分析计算方法[J] .清华大学学报1995,35(1):
[47]陈亚民.电力系统计算程序及其实现[M].中国电力出版社,1995.
[48] SD270-1988,汽轮发电机技术条件.
[49] GB/T15543-1995,电能质量三相电压允许不平衡度.
[50] SDJ161-85,电力系统设计技术规范(试行)编制说明.
[2]肖立群,魏顺炎,张克宝.同塔多回输电线路塔型结构研究[J].上海电力,2009,(2):91-95.
[3]韦钢,薛敏.同杆并架4回输电线路的探讨[J].电力建设,1999,(3):4-10.
[4]陈珩.电力系统稳态分析[M].中国电力出版社,2006.
[5]李光琦.电力系统暂态分析[M].中国电力出版社,2006.
[6]辜承林,陈乔夫,熊永前.电机学[M]。华中科技大学出版社,2006.
[7] P.M.安德逊。电力系统故障分析[M]。电力工业出版社,1984.
[8]刘建华.六相输电线路的不平衡度评估[J],长沙电力学院学报,2003,18(3):45-48
[9]戴雨剑,基EMTP的高压输电线路换位研究[J].电网技术,2006,08(30):133-135.
[10]韦刚,张子阳,房正良.多回输电线路并架的不平衡性分析[J].高电压技术,2004(10):9-11.
[11]韦刚,黄金生.同塔并架多回线序参数及不平衡度计算[J].电网技术,1998,22(10):811.
[12] Carson,John R,Wave Propagation in Overhead Wires with Ground Return.Bell System Tech.J.,1926,7(5):539-554.
[13] Gross.G, Hong,H.W., A Two-Step Compensation Method for Solving Short Circuit Problems[J]. IEEE Trans on PWAS,1982,101(6):1322-1331
[14] Gross,E.T.B.,and Hesse M H. Electromagnetic Untransposed Lines . IEEE,1995,72(3):1323-1336
[15] Hesse M H. Circulating currents in parallel untransposed multi circuit line[J]. I Numerical Evaluations, IEEE Trans on PAS, 1996, 85(3):802-811
[16] Hesse M H. Circulating currents in parallel untransposed multi circuit line[J]. II. Methods for Estimating Current Unbalanced,.IEEE Trans on PAS, 1996, 85(3):812-20
[17]陈亚伦,李志国.伊敏—冯屯500kV同塔双回线不平衡度、感应电流及电流研究[J].电网技术,1995,19(6):13-17.
[18]邹林,林福昌,龙兆芝.谢静输电线路不平衡度影响因素分析[J].电网技术,2008,12(2):283-286
[19]张要强,张天光,王予平.1 000 kV同塔双回输电线路电气不平衡度及换位问题研究[J].电网技术,2009,33(1):1-5.
[20]李健,谢帮华,文武等. 750 kV同塔双回输电线路电气不平衡度及换位研究[J].电力建设,2007,28(6):133-135.
[21]汪晶毅,李志泰,潘春平.500 kV狮洋至五邑线路电气不平衡度的研究[J].南方电网技术,2009,11(03):145-149
[22]丁洪发,段献忠.不换位输电线路产生的不对称问题及解决方法[J].电网技术,2004,10(19):24-26.
[23]蓝磊,艾绍贵,黄永宁.宁夏北部220 kV电网不平衡电流的计算与分析[J].高电压技术,2010,36(2):488-494.
[24]郭志红,程慈源,苏建军.山东电网部分线路不平衡电流偏大的原因分析及改善措施.[J].电网技术,2006,30(21):32-36.
[25]李健,谢帮华,文武,阮江军.750 kV同塔双回输电线路电气不平衡度及换位研究[J].中国电力,2007,28(6):28-30
[26]王晓彤,林集明,班连庚.1 000 kV同塔双回线路不平衡度及换位方式分析[J].电网技术,2009,33(5):1-6.
[27]陈国庆,张志劲,孙才新,等.500 kV同塔双回线路导线排列方式对电气特性的影响[J].重庆大学学报,2003,26(6):60-62.
[28]张晓,周浩,赵斌财. 500 kV同塔四回输电线路最优相序布置[J].中国电力,2010,,43(6):44-46.
[29]朱迎春,樊友平,唐诚.强不对称互感输电线路序阻抗参数和不平衡性的理论计算与测量研究[J].广西电力,2009,(6):7-12.
[30]李博通,李永丽,陈莉.同塔四回线参数解耦及故障分析方法[J].电力系统保护与控制,2010,38(19)
[31]张言苍,杨洪平,郭征.电网故障计算中零序多重互感线路的处理[J].电力系统及自动化,2004,28(21)
[32]张伯明,陈寿孙.高等电力网络分析[M].清华大学出版社,1996 .
[33]余颖辉,李建华,杨增辉.同塔4回输电线路参数计算方法研究[J],上海电力,2009,(02):99-102.
[34]王安宁,陈青,周占平,改进的相分量法求解同杆双回线故障新算法[J],电力系统及自动化,2009,33(13):58-62.
[35]王安宁.基于相分量法的电力系统故障计算方法研究[博士学位论文],2009.
[36]刘为雄,蔡泽祥.基于相分量法的电力系统复故障计算[J].电力系统及自动化,2007,19(3):91-94.
[37]刘为雄,蔡泽祥,邱建.融合对称分量法与相分量法的大规模电力系统跨线故障计算[J].电工技术学报,2007,22(5):140-145.
[38]傅旭,王锡凡.同杆双回线跨线短路故障计算的等值双端电源相分量法[J].电力系统自动化,2004,28(7).
[39]李连伟,基于戴维南等值的静态电压稳定极限快速计算方法研究[硕士学位论文],2009
[40] Monticelli A.et al.Real-time external system epuivalent for on-line steady state generator outage simulation.IEEE Trans.on PAS,1979,PAS-98(3):770-779.
[41] Housos E,Irisarri G.Real time results with on-line network equivalents for control center applications.IEEE Trans.on PAS,1981, 100(12):4830-4837.
[42] DyLiacco T E,et al.An on-line topological equivalents of a power system.IEEE Trans.on PAS,1978,97(5):1550-1563.
[43] Dopazo J F,Irisarri G,Sesson A M. Real-time external system equivalents for on-line contingency analysis.IEEE Trans.on PAS,1979,98(6):2153-2171.
[44]张伯明,张海波.王志男.地区电网外网等值自动生成系统的开发和应用[J].电网技术,2005,29(24):10-15.
[45] Sun H B,Zhang B M.A systematic analysis method fou quasi-steady-state sensitivity.Electric powe system research,Sept 2002,63(2):141-147.
[46]张伯明,杨健.一种规范化的计算机故障分析计算方法[J] .清华大学学报1995,35(1):
[47]陈亚民.电力系统计算程序及其实现[M].中国电力出版社,1995.
[48] SD270-1988,汽轮发电机技术条件.
[49] GB/T15543-1995,电能质量三相电压允许不平衡度.
[50] SDJ161-85,电力系统设计技术规范(试行)编制说明.