Energy control system, method and device, and electronic equipment

Patent metadata

Field	Value
Publication number	US-12460833-B2
Application number	US-202118012420-A
Country	US
Kind code	B2
Filing date	Aug 2, 2021
Priority date	Aug 3, 2020
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

Disclosed in the present disclosure are an energy control system, method and device, and electronic equipment. The energy control system includes a controlled system, an energy control device and a weather server. The controlled system includes power generation equipment, energy storage equipment and air conditioning equipment. The power generation equipment, the energy storage equipment and the air conditioning equipment are connected in parallel by means of a direct-current bus. The air conditioning equipment is also connected to an alternating-current power grid; and the energy control device is in communication connection with the controlled system and the weather server respectively, and is used to acquire weather forecast information in a preset future time period from the weather server and send an optimal energy flow configuration in the preset future time period to the controlled system.

First claim

What is claimed is:

1 . An energy control method, wherein the method is applied to an energy control system,
the energy control system comprises: a controlled system, an energy control device, and a weather server; wherein: the controlled system comprises: a power generation equipment, an energy storage equipment, and an air conditioning equipment; the power generation equipment, the energy storage equipment, and the air conditioning equipment are connected in parallel through a direct-current bus: the air conditioning equipment is also connected to an alternating-current power grid; the energy control device is in communication connection with the controlled system and the weather server respectively, the energy control device is configured to acquire weather forecast information in a preset future time period from the weather server and send an optimal energy flowing configuration in the preset future time period to the controlled system; the energy control method comprises: acquiring weather forecast information of an area where a controlled system is located in a preset future time period; determining an optimal energy flowing configuration of the controlled system in the preset future time period, according to the weather forecast information and current energy storage information of the controlled system; and controlling the controlled system to run according to the optimal energy flowing configuration so that the controlled system is in an optimal running state with maximum benefit in the preset future time period, wherein the determining an optimal energy flowing configuration of the controlled system in the preset future time period, according to the weather forecast information and current energy storage information of the controlled system comprises: estimating electricity energy generated by a power generation equipment at each time moment in the preset future time period according to the weather forecast information; estimating cold energy required by an air conditioning equipment at each time moment in the preset future time period according to a preset rule; and performing evolutionary operation on an objective function to obtain the optimal energy flowing configuration according to the generated electricity energy at each time moment, the required cold energy at each time moment, the current energy storage information, and an energy balance formula of the controlled system.

2 . The energy control method according to claim 1 , wherein the air conditioning equipment comprises: a converter and an air conditioning host;
wherein: the converter comprises: a first alternating-current end, a second alternating-current end, and a direct-current end; the first alternating-current end is connected to the alternating-current power grid, the second alternating-current end is connected to the air conditioning host, the direct-current end is connected to the direct-current bus.

3 . The energy control method according to claim 2 , wherein the converter comprises: an AC/DC module and a DC/AC module, wherein:
the AC/DC module comprises a first end and a second end, the DC/AC module comprises a third end and a fourth end; the first end is used as the second alternating-current end of the converter; the second end is connected to the third end, and a connection point of the second end and the third end is used as the direct-current end of the converter; the fourth end is used as the first alternating-current end of the converter.

4 . The energy control method according to claim 2 , wherein the converter is in communication connection with the energy control device.

5 . The energy control method according to claim 2 , wherein the air conditioning host comprises: a compressor, a condenser, a throttling device, and an evaporator, wherein the compressor is connected to the second alternating-current end of the converter.

6 . The energy control method according to claim 1 , wherein the energy storage equipment comprises: an energy storage mechanism and a DC/DC transformer; wherein:
one end of the DC/DC transformer is connected to the energy storage mechanism, and the other end of the DC/DC transformer is connected to the direct-current bus; the energy storage mechanism is also connected to the air conditioning equipment.

7 . The energy control method according to claim 6 , wherein the energy storage mechanism comprises: an electricity energy storage component and a cold energy storage component; or, the electricity energy storage component or the cold energy storage component; wherein:
in a case that the energy storage mechanism comprises the electricity energy storage component, the electricity energy storage component is connected to the DC/DC transformer; the evaporator in the air conditioning host is connected to an air conditioning terminal through a chilled water inlet pipeline and a chilled water outlet pipeline, the chilled water inlet pipeline is thereon sequentially provided with a chilled water pump and a main water pump, the chilled water outlet pipeline is thereon sequentially provided with a first valve and a second valve, the chilled water pump and the first valve are close to the evaporator side; in a case that the energy storage mechanism comprises the cold energy storage component, the cold energy storage component is connected between the first valve and the second valve through a first pipeline, the cold energy storage component is also connected between the chilled water pump and the main water pump through a second pipeline, the second pipeline is thereon provided with a third valve; or, the DC/DC transformer is in communication connection with the energy control device.

8 . The energy control method according to claim 1 , wherein:
the energy control system further comprises: a communication module, connected between the energy control device and the weather server; or, the power generation equipment is a photovoltaic power generation equipment.

9 . The method according to claim 1 , wherein the objective function is:

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Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Huang Meng
• Jiang Yingyi
• Liu Xiaogao
• Huang Songru
• Dang Peiyu

Classifications

• H02J2101/25

  involving maximum power point tracking control for photovoltaic sources · CPC title

• H02J2105/42

  Home appliances · CPC title

• H02J2101/24

  Photovoltaics · CPC title

• H02J1/14

  Balancing load and power generation in DC networks · CPC title

• G05B2219/2614

  HVAC, heating, ventillation, climate control · CPC title