Method of air-conditioning load for participating in secondary frequency modulation of system based on energy storage model building

Abstract

The invention discloses a method of air-conditioning load for participating in secondary frequency modulation of a system based on energy storage model building. The method comprises the following steps of: building an energy storage model of air-conditioning load; forming two stacks of on-off-stack and off-on-stack of an air-conditioning unit for real-time control according to an SOC (System On Chip) predicted value of each air-conditioner unit; calculating adjustable capacity of the air-conditioning unit administered by a load aggregator, and reporting to a dispatching center; receiving a power adjustment instruction issued from the dispatching center by the load aggregator; and decomposing the power adjustment instruction into start-stop control of each administered air-conditioner unit by the load aggregator according to a certain start-stop strategy of the air-conditioning unit. Based on a commercial model of the load aggregator, a process and a method for the secondary frequency modulation of a large-scale air-conditioning unit participation system are built, the energy storage model is built for the air-conditioning unit, so that the air-conditioning unit can participate in operation and dispatching of a power system like a normal energy storage element, and a basic theory in which the air-conditioning unit serves as a demand response resource to participate in the secondary frequency modulation of the system is formed.

Description

technical field [0001] The invention relates to the field of power system control, in particular to a method for secondary frequency regulation of an air-conditioning load participating in a system based on energy storage modeling. Background technique [0002] In February 2013, the State Grid Corporation of China released the "Opinions on Doing a Good Job of Distributed Power Grid-connected Services", which broke the previous development barrier that distributed power only "grid-connected" but not "on-line". However, due to 1) new energy distributed power sources such as wind power and photovoltaics have intermittent and random output characteristics; 2) users' independent power generation and consumption decisions cause uncertainty in grid power; 3) they are different from large-scale wind farms and other centralized The user-side distributed power generation is non-schedulable, that is, the power grid must fully absorb the distributed power generation, and its large-scale...

AI Technical Summary

Problems solved by technology

At present, some air-conditioning load control has been implemented, but it lacks the underlying physical support and has strong subjectivity; and the control process is very complicated, which cannot be used in most cases, and can only be adjusted for large-scale air conditioners

In addition, the fast response characteristics of the air-conditioning load determine that its participation in system operation is not limited to peak shaving, and has not yet been widely used.

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