Application method of economic efficiency evaluation method of international power system interconnection considering environmental factor in electric power industry

摘要

The present invention relates to a method of application of the electric power industry of grid-connected economic evaluation method considering the environmental factors, especially capacity reductions due to grid-connected effects, fuel savings, as well as the power sector environment becomes a problem recently national economic It relates to the economic development of assessment methods, including hydraulic model of the exhaust gas savings side.; Method of application of the electric power industry of grid-economic evaluation method considering the environmental elements of the present invention is the first step to obtain the objective function, which is represented by the total power generation costs and environmental taxes (carbon tax) the sum of the cost of the overall state of the associated state; The associated multi-nodal model to represent the power system of the country by a plurality of nodes (multi-nodal model) to by the equipment capacity of each node balance conditions, power equipment constraints, linkage line constraint, positive power constraint, a positive the second step to obtain the range for the power balance condition and hydraulic power constraints; And the deriving for each connection state power capacity and associated track capacity, power can quantities between the linked state of minimizing the overall cost represented by the objective function via the linear programming for the condition-specific range of said each node as a step 3, the technical features.; Thus, the method of application of the electric power industry of grid-economic evaluation method considering the environmental elements of the present invention has the following advantages.; First, develop a hydraulic model of economic evaluation grid-connected systems considering the country's characteristics.; Second, the capacity reductions, fuel cost reduction due to grid connection, as well as possible to develop the economic evaluation methods, including mathematical model for emissions reductions in the electricity sector in terms of environmental issues in recent years, and the national economy.; Third, the system can contribute to the scale-up and improve system reliability by raising emergency power due to grid connection.; Fourth, it is possible to build a foundation to review the impact on the national long-term power supply plan in accordance with the economic power ensured.; Fifth, because they can take advantage of the difference are different from each other, and the power ratio of the scale-up system, the load pattern of the equipment can be reduced reserve equal to 50% of the line capacity approximately linkage. If you performed a system corresponding to 10% of the maximum load connection by 2015, for example it means that the equipment reserve savings of 3,479MW, and translates it into the amount of capex savings of 33,047 million (one hundred million won 9.5 / MW) .; Sixth, it enables a normal operating reserve and economic power utilization. The UCTE system were reported to have savings of 3% in fuel costs throughout the system interconnection between countries, when converted into the amount of it in the case of KEPCO amounted to W120bn current year 1998.; Seventh, it can be expected by including developing a mathematical model of the environmental aspects due to environmental regulations, avoiding economic impact that is, CO ₂ emissions, and a carbon tax savings.