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Regulation and control method for air conditioner load virtual synchronous machine group to participate in power 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 response capability, stability, and system operation economy and safety

Active Publication Date: 2019-10-15
SOUTHEAST UNIV
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  • 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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  • Regulation and control method for air conditioner load virtual synchronous machine group to participate in power grid interaction
  • Regulation and control method for air conditioner load virtual synchronous machine group to participate in power grid interaction
  • Regulation and control method for air conditioner load virtual synchronous machine group to participate in power 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 control link of the frequency conversion air conditioner compressor, and establish the control model of the virtual synchronous machine for the transformation of 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 makes the hot air conti...

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Abstract

The invention discloses a regulation and control method for an air conditioner load virtual synchronous machine group to participate in power grid interaction. The method comprises the steps of: modifying a control link of a variable frequency air conditioner compressor based on the basic working principle of a variable frequency air conditioner, and establishing a modified air conditioner load virtual synchronous machine regulation and control model; then, grouping, equating and aggregating the air compressor load virtual synchronous machines by adopting a motor dynamic aggregation method based on the homography; and finally, determining that the air conditioner load virtual synchronous machine group participates in power grid frequency modulation, peak regulation or emergency power support according to the power grid running state information and the distribution network scheduling instruction. The regulation and control method can improve the regulation and control capability of theair conditioner load; the air conditioner load virtual synchronous machine actively participates in the power grid demand response, and the operation stability and the economical efficiency of the power grid are improved; and moreover, digital intelligent scheduling can be achieved, and accuracy and efficiency of intelligent scheduling are improved.

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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IPC IPC(8): H02J3/46H02J3/24
CPCH02J3/46H02J3/24H02J2203/20
Inventor 徐青山王栋戴蔚莺
Owner SOUTHEAST UNIV