Available Transfer Capability Calculation In Electricity Market Considering Generation Bidding

In course of electric power industry market, the revolution in transmission area demands that the owner of transmission networks should be open to all consumers of power networks equally without discrimination in order to provide transmission server better and adequately utilize transmission networks. Power industry appears a problem that how to exactly and fast calculates available transfer capability (ATC). ATC is the capability that the power network can transfer extra power besides having already transferred power under one operation mode. It's a complex reflection to transmission interchange capability of power system. At present, the research on ATC is mainly about calculating ATC with all kinds of power system security constraints, namely, the load in receiving area and the generation in sending area are all control variables, and it accomplishes the ATC calculation through optimizing specified objective function. it can make the generation and the load optimum distributing, whereas do not considering active power generation bidding of generators to dispatch them economically in every operating points of the system, so it can not make the operation state of power system most economical.This dissertation presents a new approach for calculating ATC with generation bidding in electricity market. An optimal power flow (OPF) based mathematic model by considering active power generation bidding of generators to dispatch them economically in every operating points of the system is established in this paper. The objective function is to maximize the total generation in generation area and simultaneously tries to minimize the total generation bidding as well. The optimization process is solved by semi-smooth Newton method and the split algorithm was used in calculation process which is efficient to shorten computing time. An IEEE 30 bus system is used for testing and analysis the proposed approach. The solution obtained testifies the effectiveness and feasibility of the presented model and approach and demonstrates that the proposed approach is efficient to harmonize the relation between system security and benefit.