Double-layer-two-stage operation method for multiple virtual power plants participating in active power distribution network

Abstract

The invention relates to a double-layer-two-stage operation method for multiple virtual power plants participating in an active power distribution network. The method comprises: analyzing uncertaintyof wind-solar output; constructing a Lagrange function of the constraint condition containing the uncertainty random variable, performing robust peer-to-peer model transformation by utilizing a dual theorem so as to convert uncertainty into a conventional mixed integer linear programming model, and constructing a double-layer-two-stage coordination optimization model of a plurality of virtual power plants participating in the active power distribution network on the basis. A hierarchical energy optimization strategy is adopted, meanwhile, the relation between the safety of the active power distribution network and the economy of the virtual power plant is considered, the interaction power of the upper layer and the lower layer is coordinated and optimized, a power distribution network safety model is optimized through a particle swarm algorithm, and a virtual power plant economy model is solved through CPLEX. According to the method, the uncertainty influence of renewable energy sources can be effectively coped with, the operation robustness of the system is greatly improved, and coordinated and optimized operation of the virtual power plant and the active power distribution network is realized.

Description

technical field [0001] The invention relates to a distribution network technology, in particular to a double-layer-two-stage operation method in which multiple virtual power plants participate in an active distribution network. Background technique [0002] In order to meet the growing demand for electric energy and cope with the crisis of fossil energy shortage, the operation structure of the traditional distribution network can no longer meet the needs of new energy grid integration, and the active distribution network (active distribution network (ADN) technology has been developed rapidly. However, the randomness and volatility of renewable energy output and the dispersion of location distribution have brought serious hidden dangers to the safe and stable operation of the power system, and the increase in penetration rate will further aggravate this problem. The proposal and development of virtual power plant (virtual power plant, VPP) technology provides a new way to s...

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the problem of coordinated optimization scheduling of virtual power plants and active distribution networks, and proposes a double-layer-two-stage operation method in which multiple virtual power plants participate in active distribution networks

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