Decentralized control method for heterogeneous air conditioning clusters based on frequency response

Abstract

The invention discloses a decentralized control method for heterogeneous air conditioning clusters based on frequency response. Firstly, a dynamic model of a single device is given according to the physical characteristics of the air conditioning load involved in the demand response, and based on the dynamic model, the steady polymerization power estimation changed along with the external temperature of the heterogeneous air conditioning clusters is given; then, according to the emergency fault response level of the power grid, the frequency threshold of the air conditioning participating in demand response is divided, and the polymerization power adjustment of the air conditioning clusters under different frequency deviation values is given; and finally, a frequency-based decentralized stochastic control method of the single air conditioner based on the parameters of the known system model is given. By means of the decentralized control method, the heterogeneous air conditioning clusters can quickly and accurately compensate the power mismatch of the power grid under the emergency fault, the communication cost is saved, and the frequency recovery of the power grid and the safe andstable operation of the system are facilitated.

Description

Technical field: [0001] The invention relates to a distributed control method for heterogeneous air conditioner clusters based on frequency response, and belongs to the technical field of power system demand response. Background technique: [0002] In recent years, the use of temperature-controlled loads as controllable loads to participate in the frequency response of power systems has received great attention, including the modeling and control of temperature-controlled load clusters. As one of the major categories of temperature-controlled loads, air-conditioning load clusters can participate in auxiliary services such as system frequency response by cutting loads without affecting user experience. When an emergency failure occurs in the power system, such as several units being offline, it will inevitably have a huge impact on the grid frequency. Traditional power control usually uses the ability of the primary frequency modulation unit to provide fast frequency response...

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Problems solved by technology

[0007] 2) Limitations of communication

However, the degree of user participation in system frequency response cannot be reasonably evaluated, which can easily lead to insufficient or excessive demand response. At the same time, how to ensure user comfort when using energy while promoting user participation in system demand response is the current demand-side response One of the focal issues of the study

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