Two-stage optimized dispatching method for virtual power plant

Abstract

The invention discloses a two-stage optimized dispatching method for a virtual power plant. The two-stage optimized dispatching method comprises the steps of acquiring the power generation and power utilization information of an internal power source of the virtual power plant, and simultaneously, acquiring excitation information from a power company or a power market outside the virtual power plant, constructing an economical dispatching model, substituting the obtained information in the economical dispatching model and carrying out optimization solution, constructing a safe dispatching model, substituting network constraint information and a obtained dispatching scheme into the safe dispatching mode, and solving by a particle swarm optimization algorithm to obtain the final dispatching scheme. The two-stage optimized dispatching method for the virtual power plant is capable of realizing effective management on a large-scale distributed power source, an energy storage device, controllable load and the like, and a large-scale complex power dispatching and planning problem is decomposed into two dispatching subproblems, namely, an economic dispatching problem and a safe dispatching problem, and in addition, the complexity of calculation is reduced and the calculation time is shortened while the economical efficiency and the reliability of the dispatching scheme are guaranteed.

Description

technical field [0001] The invention relates to a distributed energy optimal dispatching method, in particular to an optimal dispatching method of a virtual power plant. Background technique [0002] With the shortage of fossil fuels and the increasing environmental pollution, distributed power is developing rapidly. In order to realize the effective management of large-scale distributed power, the concept of virtual power plant (VPP) has attracted more and more attention. From a microscopic point of view, a virtual power plant can be considered as a special power plant through the aggregation and coordination of distributed energy sources such as distributed power sources, energy storage devices, controllable loads, and electric vehicles through advanced information and communication technology and software systems. A power supply coordination management system that participates in the electricity market and grid operation. From a macro point of view, virtual power plants...

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Problems solved by technology

Using the first scheduling method can get good benefits, but it often poses a great threat to the carrying capacity of the line, which is not conducive to the safe operation of the power grid; using the second scheduling method can well ensure the safety of the distribution network Stable operation, but poor economy; adopting the third scheduling method can take into account both the economics of the scheduling scheme and the impact on the safe and stable operation of the power grid, but its calculation scale is large and complex, so the calculation time is long and it is easy to fall into problem with local optimum

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