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A virtual energy storage scheduling method for air-conditioning load oriented to grid frequency regulation service

A technology of air-conditioning load and virtual energy storage, applied in the direction of AC network load balancing, power network operating system integration, energy storage, etc., can solve the problems of increasing the uncertainty of the power system, large generator reserve capacity, and high economic costs, and achieve Promote good interaction, reduce configuration capacity, and improve economic efficiency

Active Publication Date: 2022-08-09
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the access of a high proportion of renewable energy has put great pressure on the security and stability of the power grid. The volatility and intermittency of renewable energy has increased the uncertainty of the power system operation and brought huge challenges to the balance of supply and demand of the power grid. This puts forward higher requirements for the backup resources in the power system. If only the generator sets provide system backup, the required generator backup capacity is large but the efficiency is low and the economic cost is high. Therefore, resources on the power generation side and demand Side resources play a role at the same time

Method used

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  • A virtual energy storage scheduling method for air-conditioning load oriented to grid frequency regulation service
  • A virtual energy storage scheduling method for air-conditioning load oriented to grid frequency regulation service
  • A virtual energy storage scheduling method for air-conditioning load oriented to grid frequency regulation service

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Embodiment 1

[0073] The present invention provides an implementation case of an air-conditioning load virtual energy storage scheduling method for grid frequency regulation services:

[0074] In step S1, a virtual energy storage model of a single air conditioner is constructed according to the thermodynamic model of the air conditioner. The thermodynamic model of air conditioning (in cooling mode) can be used to describe the change process of indoor temperature:

[0075]

[0076] In the formula, T in (t) is the indoor temperature at time t, C and R are the equivalent thermal capacity and equivalent thermal resistance, respectively, T out is the ambient temperature, η is the energy efficiency ratio of the air conditioner, P rated is the rated power of the air conditioner, and m(t) is the marked quantity of the switch state of the air conditioner at time t (1 means open, 0 means close).

[0077] According to the requirements of the user's comfort level, the indoor temperature is requir...

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Abstract

The invention discloses an air-conditioning load virtual energy storage scheduling method oriented to power grid frequency regulation service, comprising: step S1, based on the heat storage capacity of the air-conditioning, according to the air-conditioning load thermodynamic model and the user comfort level, construct a single air-conditioning system. Virtual energy storage model; Step S2, consider the parameter diversity and state diversity of the air conditioning load, construct a virtual energy storage aggregation model of the air conditioning load group; Step S3, according to the air conditioning on / off state and locked / unlocked state, the air conditioning load Perform grouping sorting, and formulate a virtual energy storage control strategy for air-conditioning loads based on priority queues; step S4, establish constraints on the aggregated virtual energy storage power and ramp rate of air-conditioning load groups; step S5, solve and determine the air conditioner under a certain grid frequency modulation signal Optimal scheduling results of load virtual energy storage. The invention makes full use of the heat storage capacity of the air-conditioning load, establishes a virtual energy-storage model of the air-conditioning load, and promotes the stable and economical operation of the power grid.

Description

technical field [0001] The invention relates to a scheduling method, in particular to an air-conditioning load virtual energy storage scheduling method oriented to power grid frequency regulation services, and belongs to the technical field of resource optimization scheduling. Background technique [0002] The shortage of traditional energy and the deterioration of the ecological environment have become obstacles to sustainable development. It is imperative to change the way of energy development, promote the transformation of energy structure, and achieve energy conservation and emission reduction. The power grid must move towards a green, low-carbon, and environmentally friendly intelligent direction. develop. Renewable energies such as wind power, hydropower and photovoltaics have received extensive attention due to their cleanliness and environmental protection, and countries have vigorously promoted the development of renewable energy. However, the access of a high pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24H02J3/28
CPCH02J3/24H02J3/28Y04S20/222
Inventor 徐青山吉用丽夏勇栾开宁杨斌
Owner SOUTHEAST UNIV
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