Virtual power plant optimal scheduling method and device

Abstract

The invention discloses a virtual power plant optimization scheduling method and device, and the method comprises the steps: constructing a virtual power plant optimization target; constructing powerdistribution network operation constraints according to safety requirements which must be met in operation of the power distribution network where the virtual power plant is located; constructing renewable energy constant voltage mode operation constraints; constructing a virtual power plant optimization model according to the constructed virtual power plant optimization target, the power distribution network operation constraint and the renewable energy constant voltage mode operation constraint, and solving to obtain an optimization result; judging whether renewable energy reactive power inthe optimization result exceeds a regulation and control range or not, if yes, adjusting the renewable energy of which the reactive power exceeds the regulation and control range from a constant voltage control mode to a constant reactive power control mode, and replacing a constant voltage constraint item in an optimization model with a constant reactive power constraint item, otherwise, ending the optimization process and outputting an optimization result. According to the method, the renewable energy reactive power regulation and control capability is improved, the complexity of an optimization model is reduced, and the solving efficiency is improved.

Description

Technical field[0001]The present invention relates to the technical field of power systems, and more particularly to a virtual power plant optimization scheduling method and installation.Background technique[0002]Renewable energy power is an important regulatory resource in a virtual power plant. The traditional virtual power plant optimization control is generally focused on the renewable energy active control characteristics, coordinated optimization by running planning programs such as renewable energy, demand side response, storage capacity, and achieves active cooperation between virtual power plants and main networks.[0003]However, unlike traditional large-capacity power supplies, renewable energy is often small, and the reactive power regulation has weaker. Therefore, reactive regulatory ability is often important factors in its active power generation capabilities. If the virtual power plant is optimized, no unactistime adjustment ability is not considered, it may cause prob...

AI Technical Summary

Problems solved by technology

[0003] However, unlike traditional large-capacity power sources, renewable energy often has small installed capacity and weak reactive power control capabilities.

Therefore, the reactive power control capability is often an important limiting factor for its active power generation capacity

If the reactive power regulation capability is not considered in the optimal control of the virtual power plant, it may cause insufficient reactive power regulation capability in actual operation and make it difficult to implement the active power generation plan

Images