Establishment and solution method and system of power network planning model considering market power mitigation

Abstract

The invention relates to a method and a system for establishing and solving a power network planning model considering market power mitigation. The method comprises the following steps: based on a traditional power network planning model, embedding a TCRSI constraint, defining a market power index test set, and determining a market power test range in power network planning. TCRSI is the index ofsurplus supply considering power network constraint; establishing a power network planning model considering market forces mitigation. The power network planning model is decomposed into the main problem of power network structure optimization and the TCRSI calibration sub-problem. The main problem is a mixed integer linear programming problem, and the sub-problem is a linear programming problem.The main problem provides the decision variables for the sub-problem, and the sub-problem provides the test subset without feasible solution for the main problem. CPLEX is used to solve the two problems alternately. The invention can alleviate the calculation burden of the large-scale power system network planning and greatly reduce the complexity of the model and the solution.

Description

technical field [0001] The invention relates to the field of grid planning, in particular to a method and system for establishing and solving a grid planning model considering market force mitigation. Background technique [0002] The task of power grid planning is to formulate the optimal grid expansion scheme to meet the growth of power load and generating units. The traditional power grid planning takes the vertically integrated monopoly power system as the research object, and generally takes the minimum sum of the line investment cost and the operating cost based on the marginal cost of the unit as the optimization objective function. [0003] Under electricity market conditions, market power is usually defined as the ability to make electricity prices deviate from the level of market competition. The exercise of market power on the power generation side will lead to a general increase in electricity prices, a deadweight loss of social welfare, and a transfer of wealth...

AI Technical Summary

Problems solved by technology

It can reflect the interaction between the grid planning scheme, unit quotation and node marginal electricity price, but the grid planning problem based on game theory is very large and difficult to solve. The existing research basically uses a small-scale simple test system to verify the validity of the model. , it is difficult to apply this method to the actual power market based on large-scale power systems

It can be seen that the research on power grid planning under the condition of electricity market is far from mature.

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