COMPARISON BETWEEN SIMULATION AND MEASUREMENT OF FREQUENCY DEPENDENT AND TRANSIENT CHARACTERISTICS OF POWER TRANSMISSION LINE GROUNDING

This paper describes application of three different theoretical models for high fre- quency and transient analysis of grounding sys- tems depending on their complexity. The first two are based on transmission line and the third one on rigorous electromagnetic field theory. The first one is suitable for the simplest single horizontal and vertical ground electrodes, the second one is suitable for more complex arrangements of grounding electrodes, typical for transmission line grounding, and the third one is suitable for arbitrary complex grounding systems. Paper then presents comparison between rigorous and simpli- fied theoretical and experimental results by EDF. Soil ionization was not considered since only low currents were used in the considered experiments.

[1]  Juan A. Martinez-Velasco.  Computer analysis of electric power system transients ; selected readings , 1997 .

[2]  Roger F. Harrington,et al.  Field computation by moment methods , 1968 .

[3]  Leonid Grcev,et al.  EMTP-based model for grounding system analysis , 1994 .

[4]  A. Liew,et al.  Dynamic model of impulse characteristics of concentrated earths , 1974 .

[5]  S. Ramo,et al.  Fields and Waves in Communication Electronics , 1966 .

[6]  E. Sunde.  Earth conduction effects in transmission systems , 1949 .

[7]  D. Mukhedkar,et al.  Fundamental Considerations and Impluse Impedance of Grounding Grids , 1981, IEEE Transactions on Power Apparatus and Systems.

[8]  A. Geri,et al.  Behaviour of grounding systems excited by high impulse currents: the model and its validation , 1999 .

[9]  Z.D. Grcev,et al.  Frequency Dependent and Transient Characteristics of Substation Grounding Systems , 1997, IEEE Power Engineering Review.

[10]  Robert G. Olsen,et al.  A comparison of exact and quasi-static methods for evaluating grounding systems at high frequencies , 1996 .

[11]  A. Meliopoulos,et al.  Transient Analysis of Grounding Systems , 1983, IEEE Transactions on Power Apparatus and Systems.

[12]  A. P. Meliopoulos,et al.  Frequency Dependent Characteristics of Grounding Systems , 1987, IEEE Transactions on Power Delivery.

[13]  Leonid Grcev,et al.  An electromagnetic model for transients in grounding systems , 1990 .

[14]  S. Bourg,et al.  Deep earth electrodes in highly resistive ground: frequency behaviour , 1995, Proceedings of International Symposium on Electromagnetic Compatibility.

[15]  L. Grcev.  Computation of transient voltages near complex caused by ligntning currents , 1992, International Symposium on Electromagnetic Compatibility.

[16]  D. Mukhedkar,et al.  Experimental Study of Transient Ground Impedances , 1981, IEEE Transactions on Power Apparatus and Systems.

[17]  Leonid Grcev,et al.  Computer analysis of transient voltages in large grounding systems , 1996 .

[18]  B. Thapar,et al.  Impulse Impedance of Grounding Grids , 1980, IEEE Transactions on Power Apparatus and Systems.

[19]  D. Mukhedkar,et al.  Transient Performance of Grounding Grids , 1989, IEEE Power Engineering Review.

[20]  A. M. Mousa.  The soil ionization gradient associated with discharge of high currents into concentrated electrodes , 1994 .

[21]  Carlo Mazzetti,et al.  Impulse Behavior Of Ground Electrodes , 1983, IEEE Transactions on Power Apparatus and Systems.

[22]  M. Heimbach,et al.  Grounding System Analysis in Transients Programs Applying Electromagnetic Field Approach , 1997, IEEE Power Engineering Review.