The Identification Strategy of Transformer Synchronous Fault Based on Synergy of Historical Data
Chen Dunhui1, Su Shu1, Lin Xiangning1, Li Zhen2, Bo Zhiqian2
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China; 2. XJ Group Corporation Xuchang 461000 China
Abstract The electromagnetic interference signal will be possibly generated when a power system encounters a disturbance due to feeder fault, shedding or inception of large-scale loads and large-size power sources. In this case, the Electronic Transformer with electromagnetic compatibility defect will output abnormal data, whichwill lead to misoperation of the control system of relay protection. This problem is promising to be solved along with the substation protection’s emerging, which has a capacity of obtaining the entire substation information. In this paper, the existence of the similar region within which the dynamic characteristics of the transmission line fault are of high similarity is proved. Furthermore, a hypothesis that the state and topology of the electric power system is discrete is introduced, and the concept of transmission line’s homotype fault is proposed correspondingly. Based on the above work and the similarity between a certain dynamic case and the historic examples, the principle, criterion, and implementation to identify the adjoint fault of Electronic Transformer are proposed, and the assessment index for describing the severity degree of the faulted electronic transformer are also given. Finally, a typical power system simulation model is established with PSCAD, and numerous examples of electromagnetic interference are constructed under different conditions. The feasibility and the value of the proposed principles and methods are testified.
Chen Dunhui,Su Shu,Lin Xiangning等. The Identification Strategy of Transformer Synchronous Fault Based on Synergy of Historical Data[J]. Transactions of China Electrotechnical Society, 2017, 32(23): 115-126.
[1] 李斌, 薄志谦. 智能配电网保护控制的设计与研究[J]. 中国电机工程学报, 2009, 29(增刊): 1-6. Li Bin, Bo Zhiqian. Design and research on protection and control of smart distribution grid[J]. Proceedings of the CSEE, 2009, 29(S): 1-6. [2] 周孝信, 陈树勇, 鲁宗相. 电网和电网技术发展的回顾和展望—试论三代电网[J]. 中国电机工程学报, 2013, 33(22): 1-11. Zhou Xiaoxin, Chen Shuyong, Lu Zongxiang. Review and prospect for power system development and related technologies: a concept of three-generation power systems[J]. Proceedings of the CSEE, 2013, 33(22): 1-11 [3] 王建华, 张国钢, 耿英三, 等. 智能电器最新技术研究及发展应用前景[J]. 电工技术学报, 2015, 30(9): 1-8. Wang Jianhua, Zhang Guogang, GengYingsan, et al. The latest technology research and application prospects of the intelligent electrical apparatus[J]. Transactions of China Electrotechnical Society, 2015, 30(9): 1-8. [4] 刘益青, 高厚磊, 李乃永, 等. 适用于站域后备保护的智能变电站站间信息传输方案[J]. 电力系统保护与控制, 2015, 43(2): 96-102. Liu Yiqing, Gao Houlei, Li Naiyong, et al. A communication scheme between smart substations for substation-area backup protection[J]. Power System Protection and Control, 2015, 43(2): 96-102. [5] 王红星, 张国庆, 郭志忠, 等. 电子式互感器及其在数字化变电站中应用[J]. 电力系统自动化设备, 2009, 29(9): 115-120. Wang Hongxing, Zhang Guoqing, GuoZhizhong, et al. Electronic transformer and its application in digital substations[J]. Electric Power Automation Equipment, 2009, 29(9): 115-120. [6] 刘明, 李金忠, 刘锐, 等. 电子式互感器技术和应用评述[J]. 变压器, 2013, 50(2): 24-28. Liu Ming, Li Jinzhong, Liu Rui, et al. Review on technology and application of electronic instumenttransformer[J]. Transformer, 2013, 50(2): 24-28 [7] 张惠娟, 韩叶, 凌跃胜, 等. 变电站电磁干扰预测分析 [J]. 电工技术学报, 2015, 30(增刊1): 412-417. Zhang Huijuan, Han Ye, Ling Yuesheng, et al. The forecast analysis in substation electromagnetic interference[J]. Transactions of China Electrotechnical Society, 2015, 30(S1): 412-417. [8] 张建功, 赵军, 谢鹏康, 等. VFTO作用下电子式电流互感器二次端口电磁特性仿真分析[J]. 电工技术学报, 2015, 30(增刊2): 88-94. Zhang Jiangong, Zhao Jun, XiePengkang, et al. Simulation and analysis of electromagnetic properties at the secondary port of electronic current transformersunder very fast transient overvoltage[J]. Transactions of China Electrotechnical Society, 2015, 30(S2): 88-94. [9] 刘彬, 叶国雄, 郭克勤, 等. 电子式互感器性能检测及问题分析[J]. 高电压技术, 2012, 38 (11): 2972-2980. Liu Bin, Ye Guoxiong, GuoKeqin, et al. Quality test problem analysis of electronic transformer[J]. High Voltage Engineering, 2012, 38 (11): 2972-2980. [10] 王鹏, 张贵新, 朱小梅, 等. 电子式电流互感器温度特性分析[J]. 电工技术学报, 2007, 22(10): 60-64. Wang Peng, Zhang Guixin, Zhu Xiaomei, et al. Temperature characteristic analysis on electronic current transformer[J]. Transactions of China Electrotechnical Society, 2007, 22(10): 60-64. [11] 李正华, 胡蔚中, 闫苏红, 等. 隔离开关开合下电子式互感器传导干扰分析及抗干扰方法[J]. 高电压技术, 2016, 42(1): 233-240. Li Zhenghua, Hu Weizhong, Yan Suhong, et al. Conductive interference analysis and anti-interference methods of electronic transformers in disconnector switching test[J]. High Voltage Engineering, 2016, 42(1): 233-240. [12] 王鹏, 张贵新, 李莲子, 等. 电子式互感器误差分析[J]. 清华大学学报(自然科学版), 2007, 47(7): 1105-1108. Wang Peng, Zhang Guixin, Li Lianzi, et al. Error analysis of electronic instrument transformers[J]. Journal of Tsinghua University(Science and Technology), 2007, 47(7): 1105-1108. [13] 胡蓓, 冯翔翔, 唐鹏, 等. 浪涌干扰下电子式互感器的测量准确度研究[J]. 电测与仪表, 2014, 51(23): 18-23. Hu Bei, Feng Xiangxiang, Tang Peng, et al. Measurement accuracy of EVT during the Surge[J]. Electrical Measurement& Instrument, 2014, 51(23): 18-23. [14] 王玲, 牟育慧, 汪建, 等. 电子式互感器测量环节传输特性研究[J]. 测控技术, 2016, 35(1): 1-5. Wang Ling, Mu Yuhui, Wang Jian, et al. Research on transfer characteristics of the electronic transformer[J]. Measurement & Control Technology, 2016, 35(1): 1-5. [15] 熊小伏, 何宁, 于军, 等. 基于小波变换的数字化变电站电子式互感器突变性故障诊断方法[J]. 电网技术, 2010, 34(7): 181-185. XiongXiaofu, He Ning, Yu Jun, et al. Diagnosis of abrupt-changing fault electronic instument transformer in digital substation based on wavelet transform[J]. Power System Technology, 2010, 34(7): 181-185. [16] 仲悟之, 汤勇. 电力系统微分代数方程模型的暂态电压稳定性分析[J]. 中国电机工程学报, 2010, 30(25): 10-16. ZhongWuzhi, Tang Yong. Transient voltage stability analysis of differential-algebra equation in power system [J]. Proceedings of the CSEE, 2010, 30(25): 10-16. [17] Bergen A R, Hill D J. A structrue preserving model for power system stability analysis[J]. IEEE Transactions on Power Apparatus and Systems, 1981, PAS-100(1): 25-35. [18] 张靖, 文劲宇, 程时杰. 基于向量场正规形的电力系统动态分析[J]. 中国电机工程学报, 2006, 26 (16): 1-5. Zhang Jing, Wen Jinyu, Cheng Shijie. Power system dynamic characteristics analysis with the normal forms of vector fields[J]. Proceedings of the CSEE, 2006, 26(16): 1-5. [19] 赵镭, 苏小林. 电力系统稳定性正规形分析中Hessian矩阵的研究[J]. 电力学报, 2010, 25(6): 100-107. Zhao Lei, Su Xiaolin. Study on hessian matrix in power system stability by using normal form[J]. Journal of Electric Power, 2010, 25(6): 100-107. [20] 赵凤展, 杨仁刚. 基于短时傅里叶变换的电压暂降扰动检测[J]. 中国电机工程学报, 2007, 27(10): 28-34. Zhao Fengzhan, Yang Rengang. Voltage sag disturbance detection based on short time fouriertransform[J]. Proceedings of the CSEE, 2007, 27(10): 28-34. [21] 徐少平, 杨荣昌, 刘小平. 信息量加权的梯度显著度图像质量评价[J]. 中国图像图形学报, 2014, 19(2): 201-210. Xu Shaoping, Yang Rongchang, Liu Xiaoping. Information conent weighted gradient salience structural similarity index for image quality assessment[J]. Journal of Image and Graphics, 2014, 19(2): 201-210. [22] 闫格, 吴细秀, 田芸, 等. 开关电弧放电电磁暂态干扰研究综述[J]. 高压电器, 2014, 50(2): 119-1127. Yan Ge, Wu Xixiu, Tian Yun, et al. Review on the research of electromagnetic transient interference caused by arc discharge due to switchgear operation[J]. High Voltage Apparatus, 2014, 50(2): 119-1127.
2017, Vol. 32 
