A New PMU-Based Fault Location Algorithm for Series Compensated Lines

This work presents a new fault location algorithm based on phasor measurement units (PMUs) for series compensated lines. Traditionally, the voltage drop of a series device is computed by the device model in the fault locator of series compensated lines, but by using this approach errors are induced by the inaccuracy of the series device model or the uncertainty operation mode of the series device. The proposed algorithm does not utilize the series device model or knowledge of the operation mode of the series device to compute the voltage drop during the fault period. Instead, the proposed algorithm uses the two-step algorithm, prelocation step and correction step, to calculate the voltage drop and fault location. The proposed technique can be easily applied to any series FACTS compensated line. EMTP generated data using a 300 km, 345 kV transmission line has been used to test the accuracy of the proposed algorithm. The tested cases include various fault types, fault locations, fault resistances, fault inception angles, etc. The study also considers the effect of various operation modes of the compensated device during the fault period. Simulation results indicate that the proposed algorithm can achieve up to 99.95% accuracy for most tested cases.

[1]  A. T. Johns,et al.  Method to improve digital distance relay impedance measurement when used in series compensated lines protected by a metal oxide varistor , 1998 .

[2]  Bernhard Bachmann,et al.  Algorithms for Locating Faults on Series Compensated Lines Using Neural Network and Deterministic Methods [Book review] , 1996 .

[3]  Arun G. Phadke,et al.  Protection system representation in the Electromagnetic Transients Program , 1994 .

[4]  H. Fujita,et al.  Using a miniature model and EMTP simulations to evaluate new methods to control and protect a thyristor-controlled series compensator , 1999, IEEE Power Engineering Society. 1999 Winter Meeting (Cat. No.99CH36233).

[5]  P. Krause,et al.  Power system studies and modelling for the Kayenta 230 kV substation advanced series compensation , 1991 .

[6]  Ying-Hong Lin,et al.  An adaptive PMU based fault detection/location technique for transmission lines. II. PMU implementation and performance evaluation , 2000 .

[7]  Abdelhay A. Sallam,et al.  An adaptive protection scheme for advanced series compensated (ASC) transmission lines , 1998 .

[8]  Mladen Kezunovic,et al.  An accurate fault location algorithm using synchronized sampling , 1994 .

[9]  Magdy M. A. Salama,et al.  An overview of digital fault location algorithms for power transmission lines using transient waveforms , 1994 .

[10]  Daniel L. Goldsworthy.  A Linearized Model for Mov-Protected Series Capacitors , 1987, IEEE Transactions on Power Systems.

[11]  Eugeniusz Rosolowski,et al.  A new accurate fault locating algorithm for series compensated lines , 1999 .

[12]  Ying-Hong Lin,et al.  An adaptive PMU based fault detection/location technique for transmission lines. I. Theory and algorithms , 2000 .

[13]  Jun-Zhe Yang,et al.  Complete elimination of DC offset in current signals for relaying applications , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

[14]  John R. Rice,et al.  Numerical methods, software, and analysis , 1983 .

[15]  Einar Vaughn Larsen,et al.  Thyristor controlled series compensation prototype installation at the Slatt 500 kV substation , 1993 .

[16]  Chih-Wen Liu,et al.  A precise calculation of power system frequency and phasor , 2000 .

[17]  D. Borowski,et al.  EPRI project RP 2592, 'large scale distribution automation and load control', enters test year , 1990 .

[18]  Bernhard Bachmann,et al.  Algorithms for Locating Faults on Series Compensated Lines Using Neural Network and Deterministic Methods [Book review] , 1996, IEEE Power Engineering Review.

[19]  Hadi Saadat,et al.  Power System Analysis , 1998 .

[20]  A. T. Johns,et al.  A novel non-unit protection for series compensated EHV transmission lines based on fault generated high frequency voltage signals , 1998 .