Fast three phase load flow methods

In this paper, three-phase sequence decoupling-compensation models of unsymmetrical transmission lines are introduced. By combining these models with the well-known Newton-Raphson and fast-decoupled algorithms, two novel methods-sequence decoupling-compensation Newton-Raphson (SDCNR) and sequence decoupling-compensation fast-decoupled (SDCFD) methods-used for three-phase load flow studies are proposed, which can be used to analyze both normal and abnormal three-phase power system steady-state operation. The computation accuracy, computation speed and convergence characteristics of these methods are then investigated. From these investigations, their advantages of high accuracy, high speed, reliable convergence are verified. In this paper, parallel implementation of these methods is also discussed.

[1]  William F. Tinney,et al.  Power Flow Solution by Newton's Method , 1967 .

[2]  James E. Van Ness,et al.  The Use of Multiple Factoring in the Parallel Solution of Algebraic Equations , 1983, IEEE Transactions on Power Apparatus and Systems.

[3]  B. J. Harker,et al.  Computer Modelling of Electrical Power Systems , 1983 .

[4]  W. F. Tinney,et al.  Sparse Vector Methods , 1985, IEEE Transactions on Power Apparatus and Systems.

[5]  Mo-Shing Chen,et al.  Power system modeling , 1974 .

[6]  R. G. Wasley,et al.  Newton-Raphson algorithm for 3-phase load flow , 1974 .

[7]  Vladimir Brandwajn,et al.  Partial Matrix Refactorization , 1986, IEEE Transactions on Power Systems.

[8]  A. Morelato,et al.  A W-matrix methodology for solving sparse network equations on multiprocessor computers , 1992 .

[9]  M. A. Laughton,et al.  Unified phase-coordinate load-flow and fault analysis of polyphase networks , 1980 .

[10]  R. Bacher,et al.  Faster Local Power Flow Solutions: The Zero Mismatch Approach , 1989, IEEE Power Engineering Review.

[11]  Hermann W. Dommel,et al.  Digital Computer Solution of Electromagnetic Transients in Single-and Multiphase Networks , 1969 .

[12]  Xiao-Ping Zhang,et al.  Asymmetrical three-phase load-flow study based on symmetrical component theory , 1994 .

[13]  O. Alsac,et al.  Fast Decoupled Load Flow , 1974 .

[14]  Daniel Tylavsky,et al.  Parallel processing in power systems computation , 1992 .

[15]  A.H. El-Abiad,et al.  Three phase load flow program , 1976, IEEE Transactions on Power Apparatus and Systems.

[16]  Bin-Kwie Chen,et al.  Hybrid three phase load flow , 1990 .

[17]  J. Arrillaga,et al.  Fast-decoupled three-phase load flow , 1978 .

[18]  R. Bacher,et al.  Approximate sparse vector techniques for power network solutions , 1991, Conference Papers Power Industry Computer Application Conference.