A method for the computation of fault transients in transmission lines
Journal Article
·
· IEEE Trans. Power Del.; (United States)
The purpose of this paper is to present a method for the exact computation of long-line fault transients. The use of a numerical inverse Laplace Transform algorithm enables analyzing faults comprising lines of any length. The derivation of the equations in the s-domain makes it possible to represent such lines by a single two-port network, each. For convenience, the approach is first illustrated for a single-phase representation, which is valid for symmetrical faults. Then a generalized approach for 3-phase modelling is derived to simulate any type of fault. For the line representation, the frequency dependence of the parameters of the live conductors and ground wires is taken into consideration. To simulate the effect of ground, the concept of the complex depth is used. A digital computer program is described, and the method is applied to a practical example, then a comparison with the results available in the literature is made. The advantages of this approach are its accuracy and simplicity as well as its inherent capability of giving the values of the different currents and voltage at different network locations at preselected time points. Moreover, it is believe that one of the major applications of this method will be the testing of different digital protection algorithms and strategies.
- Research Organization:
- Electrical and Computer Engineering Dept., College of Engineering and Petroleum, Kuwait Univ. (KW)
- OSTI ID:
- 7183604
- Journal Information:
- IEEE Trans. Power Del.; (United States), Journal Name: IEEE Trans. Power Del.; (United States) Vol. 3:1; ISSN ITPDE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
200300 -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
99 GENERAL AND MISCELLANEOUS
990220* -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ALGORITHMS
COMPUTER CALCULATIONS
COMPUTERIZED SIMULATION
COMPUTERS
DIGITAL COMPUTERS
FAULT TREE ANALYSIS
INTEGRAL TRANSFORMATIONS
LAPLACE TRANSFORMATION
MATHEMATICAL LOGIC
NUMERICAL SOLUTION
POWER TRANSMISSION LINES
SIMULATION
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TRANSFORMATIONS
TRANSIENTS
24 POWER TRANSMISSION AND DISTRIBUTION
99 GENERAL AND MISCELLANEOUS
990220* -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ALGORITHMS
COMPUTER CALCULATIONS
COMPUTERIZED SIMULATION
COMPUTERS
DIGITAL COMPUTERS
FAULT TREE ANALYSIS
INTEGRAL TRANSFORMATIONS
LAPLACE TRANSFORMATION
MATHEMATICAL LOGIC
NUMERICAL SOLUTION
POWER TRANSMISSION LINES
SIMULATION
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TRANSFORMATIONS
TRANSIENTS