Various-type energy storage system planning configuration method and system for optimizing operation of virtual power plant

Abstract

The invention discloses a various-type energy storage system planning configuration method and system for optimizing operation of a virtual power plant. The method comprises the steps of making a loadoutput control strategy of various types of power supplies participating in load output of the virtual power plant; building an optimal economic model of various types of power supplies according tocontrollable loads of various types of power supplies in the virtual power plant; and performing calculation on the optimal economic model by the control strategy to obtain an optimal value of capacity configuration of various types of power supplies. With the method disclosed by the technical scheme, two or various energy storage technologies are combined to form a various-type energy storage system, the complement of energy-type energy storage and power-type energy storage in technological performance is achieved, and the energy storage demand of the virtual power plant in optimal operationcan be satisfied very well.

Description

technical field [0001] The invention relates to the technical field of distribution network energy storage, and more specifically, relates to a multi-type energy storage system planning and configuration method and system for optimal operation of virtual power plants. Background technique [0002] With a large number of distributed generation connected to the distribution network, the uncertainty of its access capacity and output has brought new problems to the planning and operation of the distribution network. At the same time, problems such as rapid urban load growth, increasing peak-to-valley difference, and "low standards, weak connections, and low voltage" in urban and rural distribution networks have become increasingly prominent. User-side demand response, as an effective adjustment method, can alleviate the problem to a certain extent. The above-mentioned problems, but fundamentally solved, need to introduce energy storage. [0003] Distributed configuration of ene...

AI Technical Summary

Problems solved by technology

Typical representatives of energy-based energy storage are lithium batteries, lead-acid batteries, and all-aluminum flow batteries, which have high energy density and high storage capacity, but have the disadvantages of low power density and short cycle life.

Typical representatives of power energy storage are supercapacitors, flywheel energy storage, etc., which have high power density and long cycle life, but the disadvantages are low energy density and short energy storage time

At present, most of the energy storage in virtual power plants is a single type of energy storage, which cannot make good use of the advantages of energy storage technology

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