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A control method for virtual synchronous clusters of air-conditioning loads to participate in grid interaction

A technology of virtual synchronous machines and air-conditioning loads, applied to electrical components, circuit devices, AC network circuits, etc., to achieve the effects of improving system operation economy and safety, improving stability, and improving responsiveness

Active Publication Date: 2020-08-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no control method for virtual synchronous inverter air conditioner load

Method used

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  • A control method for virtual synchronous clusters of air-conditioning loads to participate in grid interaction
  • A control method for virtual synchronous clusters of air-conditioning loads to participate in grid interaction
  • A control method for virtual synchronous clusters of air-conditioning loads to participate in grid interaction

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Embodiment Construction

[0021] The present invention is described in detail below in conjunction with the accompanying drawings.

[0022] Such as Figure 5 As shown, the control method of the air-conditioning load virtual synchronous cluster participating in the grid interaction of the present invention, the specific steps include:

[0023] 1. Construct the virtual synchronous machine control link of the frequency conversion air conditioner compressor, and establish the control model of the virtual synchronous machine for transforming the air conditioner load.

[0024] The air conditioner compressor compresses the low-pressure steam of the refrigerant in the refrigeration system into high-pressure steam and discharges it to the condenser. The condenser takes away heat through the outdoor fan to condense the high-pressure refrigerant steam into a high-pressure liquid. The high-pressure liquid enters the evaporator and evaporates under low pressure, absorbing the surrounding heat. The indoor fan make...

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Abstract

The invention discloses a control method for the virtual synchronous machine group of air conditioner load to participate in the interaction of the power grid. The method is firstly based on the basic working principle of the frequency conversion air conditioner, transforms the control link of the frequency conversion air conditioner compressor, and establishes the control model of the modified air conditioner load virtual synchronous machine; and then , using the motor dynamic aggregation method based on coherence to group, equalize and aggregate the air-conditioning compressor load virtual synchronous machines; finally, determine the air-conditioning load virtual synchronous machine group to participate in power grid frequency regulation and peak regulation according to the grid operation status information and distribution network dispatching instructions or emergency power support. The invention can improve the ability to regulate the air-conditioning load; at the same time, the virtual synchronous machine of the air-conditioning load actively participates in the demand response of the power grid to improve the operation stability and economy of the power grid; it can also realize digital intelligent scheduling and improve the accuracy and efficiency of intelligent scheduling.

Description

technical field [0001] The invention relates to the field of flexible load control, in particular to a control method for virtual synchronous machine clusters of air-conditioning loads to participate in grid interaction. Background technique [0002] With the continuous improvement of the penetration rate of distributed photovoltaic power generation, wind power generation and other new energy power generation, the low inertia and under-damping problems reflected by a large number of power electronic grid-connected devices pose a huge challenge to the stable and safe operation of the power system. On the other hand, the increasing air-conditioning load has already accounted for 30 to 40% of the summer peak load in big cities, and continues to deteriorate the load characteristics of the power system. For this reason, a large number of projects involving source-network-load interaction to participate in system peak regulation, frequency modulation and backup services are in ful...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02J3/24
CPCH02J3/46H02J3/24H02J2203/20
Inventor 徐青山王栋戴蔚莺
Owner SOUTHEAST UNIV