Optimization method of hydropower cluster sending grid considering utilization rate of clean energy

Abstract

The invention discloses a method for optimizing a hydropower cluster sending network structure considering the utilization rate of clean energy, calculates the degree of membership of each scheme corresponding to the evaluation set to which it belongs, and determines the ranking of alternative schemes. S17: Select the current optimal hydropower cluster sending scheme. S18: Does the system meet the security and stability constraints? S19: Can it pass the serious fault check? 20: Is the channel constraint satisfied? S21: Delete the current solution in the candidate library. S22: Are there alternatives in the alternative library? S23: Can the development scale and commissioning sequence of hydropower clusters be optimized? S24: Under constrained boundary conditions, optimize the development scale and commissioning sequence of hydropower clusters. S25: Optimize partition balance and change power flow direction. S26: Analyze and calculate the clean energy utilization rate of each planning level year; S27: Determine whether the clean energy utilization rate constraint is satisfied? S28: Form a hydropower cluster transmission scheme; S29: Obtain an optimization scheme for the hydropower cluster transmission network structure based on the existing grid channels.

Description

technical field [0001] The invention belongs to the field of power grids, and relates to an optimization method for a grid transmission grid of a hydropower cluster considering the utilization rate of clean energy. Background technique [0002] At present, domestic research on cascade hydropower has been carried out initially, but the research mainly focuses on various coordination and optimization scheduling methods in the operation process of cascade hydropower. [0003] Patent [1] proposes a scheduling method of cascade hydropower "virtual pumped-storage power station", with the minimum deviation between actual and target peak shaving power and the minimum water consumption of cascade hydropower as the scheduling goals, to construct cascade hydropower "virtual pumped-storage power station" scheduling. The objective function is used to solve the optimal scheduling, in order to realize the short-term scheduling plan of the power system; [0004] Patent [2] discloses an ada...

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Problems solved by technology

[0025] The purpose of the present invention is to: provide a hydropower cluster sending network frame optimization method considering the utilization rate of clean energy, solve the long-term problem of the construction of the outgoing network frame under the background of the construction and development process of the leading reservoir, and establish a corresponding regional power balance According to the construction and operation of transmission channels, the development planning of hydropower station clusters and the timing of commissioning, the mathematical model is optimized, and the greedy algorithm is used to solve the corresponding power transmission alternatives, and finally the evaluation method of entropy weight method is used to evaluate each Evaluate the alternatives, and select the optimal solution for hydropower cluster transmission and related grid construction

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