Coordinated multilateral trades for electric power networks: theory and implementation

Abstract Recent moves to open up electric power transmission networks to foster generation competition and customer choice have touched off a debate over how the transmission system should be restructured in order to meet the goal. The opposing sides of this debate are now commonly represented by the bilateral model and the poolco model. Both models resort to conventional centralized operation in dealing with the shared resources of an integrated transmission network. The conventional operating paradigm was developed in a different era for electric utilities operated as regulated monopolies. A new operating paradigm is needed for a restructured industry that encourages efficient competition and at the same time maintains necessary coordination to guarantee a high standard of reliability. We propose a new operating paradigm in which the decision mechanisms regarding economics and reliability (security) of system operation are separated. Economic decisions are carried out by private multilateral trades among generators and consumers. The function of reliability is coordinated through the power system operator who provides publicly accessible data, based upon which generators and consumers can determine profitable trades that meet the secure transmission loading limits. We prove that any sequence of such coordinated private multilateral trades, each of which benefits all parties to the trade, leads to efficient operations, i.e. maximizes social welfare. The coordinated multilateral trading model achieves all the benefits of a centralized pool operation without the visible, hand of a pool operator in economic decisions. It is shown that the existing communications, computing and control of infrastructure is adequate to support the proposed model. It is also shown that the coordinated multilateral trading model can coexist with the traditional model and provides non-discriminatory service to both utility customers and direct-access customers.

[1]  William F. Tinney,et al.  Optimal Power Flow Solutions , 1968 .

[2]  Vijay Vittal,et al.  Power System Transient Stability Analysis Using the Transient Energy Function Method , 1991 .

[3]  O. Alsac,et al.  Security analysis and optimization , 1987, Proceedings of the IEEE.

[4]  H. H. Happ,et al.  Power System Control and Stability , 1979, IEEE Transactions on Systems, Man, and Cybernetics.

[5]  S. Reichelstein.  Incentive compatibility and informational requirements , 1984 .

[6]  Stefan Reichelstein.  A note on allocations attainable through nash equilibria , 1984 .

[7]  M. Bergman,et al.  "Introduction to nMOS and cMOS VLSI Systems Design" by Amar Mukherjee, from: Prentice-Hall, Englewood Cliffs, NJ 07632, U.S.A , 1986, Integr..

[8]  Felix F. Wu.  Stability, security, and reliability of interconnected power systems , 1984 .

[9]  Felix F. Wu,et al.  A Two-stage Approach To Solving Large-scale Optimal Power Flows , 1979 .

[10]  A. Arapostathis,et al.  Behaviour of three-node power networks , 1983 .

[11]  Stanley Reiter,et al.  Studies in mathematical economics , 1988 .

[12]  Arthur R. Bergen,et al.  Power Systems Analysis , 1986 .

[13]  R. Baldick,et al.  Electricity Tariffs Under Imperfect Knowledge of Participant Benefits , 1992, IEEE Power Engineering Review.

[14]  Felix F. Wu,et al.  Nodal prices and transmission rights: A critical appraisal , 1995 .

[15]  L. Ruff,et al.  Stop Wheeling and Start Dealing: Resolving the Transmission Dilemma , 1994 .

[16]  W. Hogan.  Contract networks for electric power transmission , 1992 .

[17]  G. L. Wilson,et al.  Anatomy of a blackout: How's and why's of the series of events that led to the shutdown of New York's power in July 1977 , 1978, IEEE Spectrum.

[18]  Felix F. Wu,et al.  Large-scale optimal power flow , 1989 .

[19]  Pravin Varaiya,et al.  Pricing for system security [power tariffs] , 1995 .

[20]  Felix F. Wu,et al.  Real-time network security monitoring, assessment and optimization , 1988 .

[21]  F. Wu,et al.  Theoretical study of the convergence of the fast decoupled load flow , 1977, IEEE Transactions on Power Apparatus and Systems.

[22]  Felix F. Wu,et al.  Large-Scale Optimal Power Flow: Effects of Initialization, Decoupling & Discretization , 1989, IEEE Power Engineering Review.

[23]  F.F. Wu,et al.  Direct methods for transient stability analysis of power systems: Recent results , 1985, Proceedings of the IEEE.

[24]  Felix F. Wu,et al.  Folk theorems on transmission access: Proofs and counterexamples , 1996 .

[25]  Felix F. Wu,et al.  Bulk transmission system loss analysis , 1993 .