DISTRIBUTED ENERGY POWER SOURCE CONTROL METHOD, APPARATUS AND SYSTEM

• US 20170278199A1
• Filed: 08/21/2015
• Published: 09/28/2017
• Est. Priority Date: 08/26/2014
• Status: Active Grant

• Current Assignee: GREE Electric Appliances Incorporated of Zhuhai
• Original Assignee: GREE Electric Appliances Incorporated of Zhuhai
• Inventors: WU, CHAO, XI, MINGYAO, ZHENG, ZHIWEI
• Granted Patent: US 10,147,148 B2
• Time in Patent Office: Days
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H01L 31/053 Energy storage means directly associated or integrated with the PV cell, e.g. a capacitor integrated with a PV cell energy storage means associated with the PV module H02S40/38
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H02H 7/12 for static converters or rectifiers for discharge lamp power supplies using static converters H05B41/2851, H05B41/2921, H05B41/2981
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2310/12 The local stationary network supplying a household or a building
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 3/18 Arrangements for adjusting, eliminating or compensating reactive power in networks for adjustment of voltage H02J3/16
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 3/46 Controlling of the sharing of output between the generators, converters, or transformers
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02E 40/30 Reactive power compensation
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

A distributed energy power source control method, apparatus and system are provided. The method includes the following steps. The total amount of energy provided by an energy supply apparatus for various loads in a system is read. Energy data of each load is collected, the energy data including: a power supply voltage, a power supply current, a reactive power, an active power, and power consumption. The total power consumption of all the loads in the system is calculated. An energy allocation policy is determined by comparing the total power consumption and the total amount of energy, the energy allocation policy including: allocating energy according to a priority level of each load, and switching energy modes according to a power factor of each load. The method, apparatus and system can provide loads with dynamic power distribution modes, thereby improving the working efficiency, reliability and stability of an entire power supply system.

Claims

1. A distributed energy power source control method, comprising:

reading the total amount of energy provided by an energy supply apparatus for various loads in a system;

collecting energy data of each load, the energy data comprising;

a power supply voltage, a power supply current, a reactive power, an active power, and power consumption;

calculating the total power consumption of all the loads in the system; and

determining an energy allocation policy by comparing the total power consumption and the total amount of energy, the energy allocation policy comprising;

allocating energy according to a priority level of each load, and switching energy modes according to a power factor of each load.

2. The method according to claim 1, wherein the step of determining an energy allocation policy by comparing the total power consumption and the total amount of energy comprises any one or more of the following implementation modes:

Mode 1;

judging whether a ratio of the total power consumption to the total amount of energy is smaller than or equal to a predetermined value, wherein if the ratio of the total power consumption to the total amount of energy is smaller than or equal to the predetermined value, energy is allocated according to the priority of each load selectively, and if the ratio of the total power consumption to the total amount of energy is greater than the predetermined value, energy modes are switched according to a power factor of each load selectively; and

Mode 2;

judging whether the total power consumption is greater than or equal to the total amount of energy, wherein when the total power consumption is greater than or equal to the total amount of energy, energy is allocated according to the priority of each load selectively, and when the total power consumption is smaller than the total amount of energy, energy modes are switched according to a power factor of each load selectively.

3. The method according to claim 1, wherein allocating energy according to the priority of each load comprises:

reading the priority of each load; and

allocating energy for a predetermined number of loads in sequence according to a priority order.

4. The method according to claim 1, wherein switching energy modes according to a power factor of each load comprises:

comparing the power factor of each load and a corresponding predetermined power factor; and

when the power factor of any one or more loads is smaller than or equal to the corresponding predetermined power factor, starting a power compensation apparatus to adjust a power factor of the system.

5. The method according to claim 1, wherein after the energy data of each load is collected, the method further comprises:

monitoring the energy data of each load in real time, and acquiring fault information;

determining a faulty load according to the fault information; and

cutting the faulty load off, and giving fault alarm information.

15. The method according to claim 2, wherein allocating energy according to the priority of each load comprises:

reading the priority of each load; and

allocating energy for a predetermined number of loads in sequence according to a priority order.

16. The method according to claim 2, wherein switching energy modes according to a power factor of each load comprises:

comparing the power factor of each load and a corresponding predetermined power factor; and

when the power factor of any one or more loads is smaller than or equal to the corresponding predetermined power factor, starting a power compensation apparatus to adjust a power factor of the system.

6. A distributed energy power source control apparatus, comprising:

a reading module, configured to read the total amount of energy provided by an energy supply apparatus for various loads in a system;

a collection module, configured to collect energy data of each load, the energy data comprising;

a power supply voltage, a power supply current, a reactive power, an active power, and power consumption;

a calculation module, configured to calculate the total power consumption of all the loads in the system; and

a processing module, configured to determine an energy allocation policy by comparing the total power consumption and the total amount of energy, the energy allocation policy comprising;

allocating energy according to a priority level of each load, and switching energy modes according to a power factor of each load.

7. The apparatus according to claim 6, wherein the processing module comprises:

a judgment module, configured to judge whether a ratio of the total power consumption to the total amount of energy is smaller than or equal to a predetermined value;

a first sub-processing module, configured to allocate, if the ratio of the total power consumption to the total amount of energy is smaller than or equal to the predetermined value, energy according to the priority of each load selectively; and

a second sub-processing module, configured to switch, if the ratio of the total power consumption to the total amount of energy is greater than the predetermined value, energy modes according to a power factor of each load selectively.

8. The apparatus according to claim 6, wherein the first sub-processing module comprises:

an acquisition module, configured to read the priority of each load; and

a first allocation module, configured to allocate energy for a predetermined number of loads in sequence according to a priority order.

9. The apparatus according to claim 6, wherein the second sub-processing module comprises:

a comparison module, configured to compare the power factor of each load and a corresponding predetermined power factor; and

an adjustment module, configured to start, when the power factor of any one or more loads is smaller than or equal to the corresponding predetermined power factor, a power compensation apparatus to adjust a power factor of the system.

10. The apparatus according to claim 7, wherein after the collection module is executed, the apparatus further comprises:

a monitoring module, configured to monitor energy data of each load in real time to acquire fault information;

a determination module, configured to determine a faulty load according to the fault information; and

a fault processing module, configured to cut the faulty load off, and give fault alarm information.

11. A distributed energy power source control system, comprising:

an energy supply apparatus, configured to provide energy for each load in the system;

a detection and measurement apparatus, communicating with a detection apparatus on each load, collecting energy data of each load, detected by the detection apparatus, and calculating the total power consumption of all the loads in the system, wherein the energy data comprises;

a power supply voltage, a power supply current, a reactive power, an active power, and power consumption; and

an energy control apparatus, connected to the detection and measurement apparatus, and configured to determine an energy allocation policy by comparing the total power consumption and the total amount of energy, the energy allocation policy comprising;

allocating energy according to a priority level of each load, and switching energy modes according to a power factor of each load.

12. The system according to claim 11, wherein the energy control apparatus comprises:

a first processor, configured to judge whether a ratio of the total power consumption to the total amount of energy is smaller than or equal to a predetermined value, wherein if the ratio of the total power consumption to the total amount of energy is smaller than or equal to the predetermined value, energy is allocated according to the priority of each load selectively, and if the ratio of the total power consumption to the total amount of energy is greater than the predetermined value, energy modes are switched according to a power factor of each load selectively; and

a second processor, configured to judge whether the total power consumption is greater than or equal to the total amount of energy, wherein when the total power consumption is greater than or equal to the total amount of energy, energy is allocated according to the priority of each load selectively, and when the total power consumption is smaller than the total amount of energy, energy modes are switched according to a power factor of each load selectively.

13. The system according to claim 11, wherein the detection and measurement apparatus is in wireless connection with a detection apparatus on each load, and the energy control apparatus is in wired connection with the detection and measurement apparatus, wherein the wireless connection at least comprises any one of the following forms:

GPRS, 3G, WIFI, and Bluetooth.

14. The system according to claim 11, wherein the energy supply apparatus comprises any one or more of the following devices:

a renewable energy device connected to the energy control apparatus, a power grid power supply device, and a storage battery; and

the system further comprises;

a DC power distribution board, connected between the energy control apparatus and each load, and configured to generate an energy allocation instruction of each load according to the energy allocation policy.

17. The system according to claim 12, wherein the detection and measurement apparatus is in wireless connection with a detection apparatus on each load, and the energy control apparatus is in wired connection with the detection and measurement apparatus, wherein the wireless connection at least comprises any one of the following forms:

GPRS, 3G, WIFI, and Bluetooth.

18. The system according to claim 12, wherein the energy supply apparatus comprises any one or more of the following devices:

a renewable energy device connected to the energy control apparatus, a power grid power supply device, and a storage battery; and

the system further comprises;

a DC power distribution board, connected between the energy control apparatus and each load, and configured to generate an energy allocation instruction of each load according to the energy allocation policy.