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

Abstract

The present invention relates to the economical dispatching technology of electric power system, in particular to a multi-source optimal dispatching method considering the coordination of wind power, nuclear power and pumped storage, including: step 1, taking into account the cost of curtailment of wind and the cost of peak regulation of nuclear power, constructing a multi-source power system Wind-nuclear coordination scheduling optimization model; step 2 adopts the method of subdividing the nuclear power peak-shaving depth to linearize the nuclear power peak-shaving constraints, solves the scheduling model based on Cplex, and formulates a scheduling plan. By taking into account the cost of wind curtailment and nuclear power peak shaving cost, the scheduling method includes wind power and nuclear power into the scope of coordinated scheduling, which can greatly relieve the pressure on power grid peak shaving in coastal areas, reduce the frequent start-up and shutdown of conventional units, and increase the cost of wind power and nuclear power in coastal areas. Economics of power system operation. By subdividing the nuclear power peak shaving depth linearization nuclear power peak shaving constraint method, the linearization of nuclear power peak shaving operation constraints can be realized, so that the scheduling model can be efficiently solved based on the commercial optimization solver Cplex, and an accurate and optimized scheduling plan can be obtained, which helps to reduce system Operating costs.

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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