A Multi-source Optimal Dispatching Method Considering the Coordination of Wind Power, Nuclear Power and Pumped Storage

Abstract

The invention relates to an economic dispatching technology of a power system, in particular to a multi-source optimal dispatching method considering coordination of wind power, nuclear power and pumped storage. The method includes a step 1 of taking into account the cost of abandoning wind and the cost of peaking of nuclear power, and constructing a coordinated optimization model of wind core with multiple power sources; a step 2 of Linearizing the nuclear power peak shaving constraint by subdividing the nuclear power peak shaving depth, solve the scheduling model based on Cplex, and making the scheduling plan. By taking into account the cost of wind power and nuclear power peak load regulation, wind power and nuclear power are included in the coordinated dispatching, which can greatly alleviate the pressure of peak load regulation, reduce the frequent start-up and shutdown of conventional generating units, and improve the operation economy of the power system with wind power and nuclear power in the coastal area. By subdividing nuclear power peak shaving depth linearization nuclear power peak shaving constraint method, nuclear power peak shaving operation constraint linearizationis realized, so that the scheduling model can be solved efficiently based on commercial optimization solver Cplex, and an accurate optimal scheduling scheme can be obtained, which is helpful to reduce the system operation cost.

Description

technical field [0001] The invention belongs to the technical field of electric power system economic dispatching, and in particular relates to a multi-source optimal dispatching method considering the coordination of wind power, nuclear power and pumped storage. Background technique [0002] With the continuous increase of the peak-to-valley load difference in coastal areas, and the construction and development of onshore wind power, offshore wind power and nuclear power projects, the peak-shaving pressure on power grids in coastal areas will be severely aggravated. In particular, due to the possible anti-peaking characteristics of wind power, it will force conventional units to start and stop frequently, which does not conform to the principle of economic dispatch of the power grid, and leads to severe wind curtailment. For the power system including wind power and nuclear power in coastal areas, it is of great significance to consider the participation of nuclear power in...

AI Technical Summary

Problems solved by technology

For the scheduling model, some studies have integrated the additional fuel cost and safety cost caused by nuclear power peak shaving into the peak shaving cost to establish an optimal scheduling model for the joint operation of thermal power-nuclear power-pumped storage, but the coordinated scheduling with wind power has not been considered; for The solution method mainly lies in the linearization of nuclear power operation constraints. Some studies use a fixed peak-shaving depth for nuclear power, and describe nuclear power output based on this linearization, and realize the solution of the scheduling model. However, the fixed peak-shaving depth of nuclear power cannot accurately optimize nuclear power output. , has a certain impact on the operating economy

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