Electricity Market Environment, Taking Into Account The Agc Unit Commitment Problem

With the restructuring of power industry, it is more important to maintain system security and reliability while economically efficient transactions are accommodated in the power system. Meanwhile, restructuring has sharpened the appetite of generation owners for more efficient operation achieved by submitting auxiliary services as well as energy component. As a result, traditional unit commitment, which only is formulated as the scheduling of energy component production of electric power generating units over a daily to weekly time horizon in order to accomplish some objective, has been hard employed to provide available solution in such environment.As one kind of auxiliary services, AGC service, which be dispatched to sustain the security of power system, should be considered in the procedure of unit committed for its strong coupling schedule and dispatch with energy components.The purpose of this thesis is to explore the technology and needs of the next generation of computer models for aiding unit commitment decision to accommodate the competitive electricity market. In model, the fare of AGC regulation be accounted for in the objective function to achieve the least total purchase cost and the problem solution respects generator constraints, such as ramp rate limits and AGC regulation capacity constraints. The solution approaches that have been proposed in the work with this thesis, and which are widely used at present, are dynamic programming and Lagrange relaxation. The corresponding software is developed to simulate the case to demonstrate the effective of the model and the arithmetic.