Abstract：The difficult point of the high impedance fault(HIF) detection method is how to ensure its model accuracy. In order to solve this problem, this paper defines the characteristics and properties of HIF .Then aiming at the insufficient of the traditional Emanuel model and arc model, based on the measured data and physical phenomena and numerical calculation method, this paper establishes a new model. The model of simulation is simple and fast and the parameters are easy to adjust. Under the environment of EMTP simulation, the results show that the characteristic of HIF is obvious and then this paper analyzes the model error sources.
[1] SHARAF A M, SNIDER L A, DEBNATH K. A neural network based back error propagation relay algorithm for distribution system high impedance fault detection[C]. Advances in Power System Control, Operation and Management, 1993. APSCOM-93., 2nd International Conference on, 1993: 613-620. [2] David Chan Tat Wai; Xia Yibin. A novel technique for high impedance fault identification[J]. Power Delivery, IEEE Transactions on, 1998, 13: 738-744. [3] SHENG Y, ROVNYAK S M. Decision Tree-Based Met- hodology for High Impedance Fault Detection[J]. Power Delivery, IEEE Transactions on, 2004, 19(2): 533-536. [4] MICHALIK M, REBIZANT W, LUKOWICZ M, S.-J. LEE, KANG. Wavelet transform approach to high impedance fault detection in MV networks[C]. Proceedings of the 2005 IEEE PowerTech Conference, St. Petersburg, Russia, CD-ROM, 2005, 73. [5] NAM S R, PARK J K, KANG Y C, KIM T H. A modeling method of a high impedance fault in a distribution system using two series time-varying resistances in EMTP[J]. Power Engineering Society Summer Meeting, 2001. IEEE, 2001, 2: 1175-1180. [6] ELDIN E S T, IBRAHIM D K, ABOUL-ZAHAB E M. SALEH S M. High impedance fault detection in EHV series compensated lines using the wavelet transform[C]. Power Systems Conference and Exposition, 2009. PSCE '09. IEEE/PES. [7] SEDIGHI A R, HAGHIFAM M R. Simulation of high impedance ground fault In electrical power distribution systems[J]. Power System Technology (POWERCON), 2010 International Conference on. [8] 吴文辉,曹祥麟. 电力系统电磁暂态计算与EMTP应用[M]. 北京: 水利水电出版社, 2012. [9] 李庆扬,王能超,易大义. 数值分析[M]. 北京: 清华大学出版社, 2011. [10] JEERINGS D I, LINDERS J R. Ground Resistance- Revisited[J]. IEEE Transactions on Power Delivery, vol. PWRD-4, 1989(2): 949-956. [11] 华东师范大学数学系. 数学分析[M]. 北京: 高等教育出版社, 2012. [12] CUI T, DONG X ZH, BO ZH Q, KLIMEK, A, EDWARDS, A. Modeling study for high impedance fault detection in MV distribution system. Univer- sities Power Engineering Conference, 2008. UPEC 2008. 43rd International, 2008: 1-5.
2014, Vol. 15 
