基于多时段同步测量信息的T接线路参数在线测量

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Abstract Accurate transmission parameters are very important for state estimation, power flow computation and network losses analysis. The research work around online measurement of T-connection transmission line parameters was launched. An online measurement algorithm of transmission line was proposed. The equations were listed by analyzing the equivalent circuit of T-connection transmission line and using multi-interval synchronized Information of the T-connection transmission line. Then, by solving the equations iteratively, the parameters of the transmission line can be calculated. In order to reduce the measurement error due to the waving of electric network frequency, a windowed interpolation FFT algorithm was proposed to analysis the synchronized sampling data. In this paper, the simulation results of the proposed method are given. Finally, the online measurement process of one 110 kV transmission line containing T-connection lines by the proposed method are described, the online measurement results are given and compared with the design values. Results from both simulation and online measurement show that the proposed online measurement method is feasible and its requirements of engineering measurement.

Key words： Transmission line parameters online measurement phasor measurement unit T-connection line windowed interpolation FFT

Received: 28 November 2011 Published: 20 March 2014

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TM714

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	Niu Shengsuo
	Liang Zhirui
	Zhang Jianhua
	Su Haifeng

Cite this article:

Niu Shengsuo,Liang Zhirui,Zhang Jianhua等. Online Measurement of T-Connection Transmission Line Parameters Based on Multi-Interval Synchronized Measurement Information[J]. Transactions of China Electrotechnical Society, 2012, 27(5): 238-244.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I5/238

[1] 陈允平, 张承学, 胡志坚. 以 GPS 为基础的线路参数带电测量[J]. 电力系统自动化, 1998, 22(6): 43-45.
Chen Yunping, Zhang Chengxue, Hu Zhijian. Zero- sequence parameter measurement under operation of transmission line with mutual inductance based on GPS technology[J]. Automation of Electric Power Systems, 1998, 22(6): 43-45.
[2] Borda C, Olarte A, Diaz H. PMU-based line and transformer parameter estimation[C]. 2009 IEEE Power Systems Conference and Exposition (PSCE2009), Seattle, Washington, USA, 2009: 1-8.
[3] 王茂海, 鲍捷, 齐霞, 等. 基于PMU实测数据的输电线路参数在线估计方法[J]. 电力系统自动化, 2010, 34(1): 25-27, 31.
Wang Maohai, Bao Jie, Qi Xia, et al. Online estimation of transmission line parameters based on PMU measurements[J]. Automation of Electric Power Systems, 2010, 34(1): 25-27, 31.
[4] 于淼. 基于同步相量测量技术的线路参数在线辨识[D]. 天津: 天津大学, 2005.
[5] Liang Zhirui, Niu Shengsuo, Su Haifeng, et al. Research of flexible wide-area measurement and analysis system in power system[C]. 2010 International Conference on Electricity Distribution (CICED 2010), Nanjing, China, 2010: 1-4.
[6] 柴京慧, 李书敏, 何桦. 基于PMU及多时间断面的输电网参数估计[J]. 电力系统自动化, 2009, 33(11): 49-52.
Chai Jinghui, Li Shumin, He Hua. Parameter estimation based on PMU and multi-cases of SCADA for electricity transmission network[J]. Automation of Electric Power Systems, 2009, 33(11): 49-52.
[7] 李钦, 项凤雏, 颜伟, 等. 基于SCADA 及PMU 多时段量测信息的独立线路参数估计方法[J]. 电网技术, 2011, 35(2): 105-109.
Li Qin, Xiang Fengchu, Yan Wei, et al. An approach to estimate parameters of single transmission line based on multi-interval information measured by SCADA and phasor measurement units[J]. Power System Technology, 2011, 35(2): 105-109.
[8] 李澍森, 陈晓燕, 吴彦皎, 等. 多回平行输电线路参数带电测量[J]. 电力系统自动化, 2009, 33(22): 84-87, 97.
Li Shusen, Chen Xiaoyan, Wu Yanjiao, et al. Live line measurement of several parallel transmission lines[J]. Automation of Electric Power Systems, 2009, 33(22): 84-87, 97.
[9] 胡志坚, 陈允平, 徐玮, 等. 基于微分方程的互感线路参数带电测量研究与实现[J]. 中国电机工程学报, 2005, 25(2): 28-33.
Hu Zhijian, Chen Yunping, Xu Wei, et al. Principles and realization of live line measurement of parameters of transmission lines with mutual inductance based on differential equations [J]. Proceedings of the CSEE, 2005, 25(2): 28-33.
[10] Yuan Liao, Kezunovic. Online optimal transmission line parameter estimation for relaying applications [J]. IEEE Transactions on Power Delivery, 2009, 24(1): 96-102.
[11] Andria G, Savino M, Trotta A. Windows and interpolation algorithms to improve electric measurement accuracy [J]. IEEE Transactions on Instrumentation and Measurement, 1989, 38 (8): 856-863.
[12] Jain Vijay K, Collins Willim L. High-accuracy analog measurements via interpolated FFT[J]. IEEE Transactions on Instrumentation and Measurement, 1979, 28 (2): 113-122.
[13] 潘文, 钱俞寿, 周鹗. 基于加窗插值FFT的电力谐波测量理论(Ⅱ)—双插值FFT理论[J]. 电工技术学报, 1994, 9(2): 53-56.
Pan Wen, Qian Yushou, Zhou E. Power harmonies measurement based on windows and interpolated FFT(Ⅱ)—dual interpolated FFT algorithms[J]. Transactions of China Electrotechnical Society, 1994, 9(2): 53-56.
[14] 庞浩, 李东霞, 俎云霄, 等. 应用 FFT 进行电力系统谐波分析的改进算法[J]. 中国电机工程学报, 2003, 23(6): 49-54.
Pang Hao, Li Dongxia, Zu Yunxiao, et al. An improved algorithm for harmonic analysis of power system using FFT technique[J]. Proceedings of the CSEE, 2003, 23(6): 49-54.
[15] 许珉, 张鸿博. 基于Blackman-harris 窗的加窗FFT 插值修正算法[J]. 郑州大学学报(工学版), 2005, 26(4): 99-101.
Xu Min, Zhang Hongbo. The correction algorithm based on the Blackman-harris windows and interpolated FFT[J]. Journal of Zhengzhou University (Engineering Science), 2005, 26(4): 99-101.
[16] 陈珩. 电力系统稳态分析[M]. 北京: 中国电力出版社, 2007.
[17] Nuttall A H. Some windows with a very good sidelobe behavior[J]. IEEE Transactions on Acoustics, Speech and Signal Processing, 1981, 29(1): 84-91.