Power distribution priority controller and controlling method of a photovoltaic power generation system

• US 10,389,124 B2
• Filed: 08/21/2015
• Issued: 08/20/2019
• Est. Priority Date: 03/24/2015
• Status: Active Grant

• Current Assignee: GREE Electric Appliances Incorporated of Zhuhai
• Original Assignee: GREE Electric Appliances Incorporated of Zhuhai
• Inventors: Yang, Du, Su, Yuhai, Jin, Guohua, Xiao, Huanming, Wang, Wencan
• Primary Examiner(s): Brown, Michael J
• Application Number:
  US15/511,060
• Publication Number:
  US 20170279272A1
• Time in Patent Office: 1,460 Days
• Field of Search: 700286, 700291, 700295, 700296
• CPC Class Codes: H01L 31/042 PV modules or arrays of single PV cells supporting structures for PV modules H02S20/00
• CPC Class Codes: H02J 2310/58 The condition being electrical
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: H02S 50/00 Monitoring or testing of PV systems, e.g. load balancing or fault identification

Abstract

A power distribution priority controller and a controlling method of a photovoltaic power generation system. The controller includes a calculating unit configured to calculate an electric device priority list according to running state information of electric devices and photovoltaic power generation data and to determine a preferred power distribution schemes; a controlling unit configured to acquire in real time the running state information of all electric devices, and control the electric devices according to the preferred power distribution schemes determined by the calculating unit; a communicating unit configured to transmit the photovoltaic power generation data, the running state information of electric devices, and control command information; a storage unit configured to store, in time units, the photovoltaic power generation data, the running state information of electric devices, and the preferred power distribution schemes.

Claims

1. A power distribution priority controller of a photovoltaic power generation system, comprising:

a calculating unit configured to calculate an electric device priority list based on running state information of electric devices and photovoltaic power generation data, and to determine preferred power distribution schemes;

a controlling unit configured to acquire in real time the running state information of the electric devices, and control the electric devices according to the preferred power distribution schemes determined by the calculating unit;

a communicating unit configured to transmit the photovoltaic power generation data, the running state information of the electric devices, and control command information; and

a storage unit configured to store, in association with time units, the photovoltaic power generation data, the running state information of the electric devices, and the preferred power distribution schemes, wherein

the running state information of the electric devices includes power consumption conditions and on/off state data of the electric devices, the power consumption conditions including real-time power consumption and power, and

the photovoltaic power generation data includes power generation amount, output power, and output voltage data;

wherein the electric device priority list is calculated according to the equation below, and an intelligent preferred power distribution scheme is determined according to priorities of the electric devices in a descending order;

2. The power distribution priority controller of a photovoltaic power generation system according to claim 1, wherein the controller further comprises a displaying unit configured to display a list of the electric devices, the running state information of the electric devices, and user'"'"'s operation information.

3. The power distribution priority controller of a photovoltaic power generation system according to claim 1, wherein the electric devices comprise refrigeration devices, heating devices and/or lighting devices.

4. The power distribution priority controller of a photovoltaic power generation system according to claim 1, wherein the preferred power distribution schemes comprise an air-conditioner preferred power distribution scheme, a refrigerator preferred power distribution scheme, a water heater preferred power distribution scheme, a lighting device preferred power distribution scheme, a bedroom equipment preferred power distribution scheme, a summer preferred power distribution scheme, a winter preferred power distribution scheme, and a customized power distribution scheme.

5. The power distribution priority controller of a photovoltaic power generation system according to claim 1, wherein the power distribution priority controller further has an intelligent preferred power distribution mode, wherein when photovoltaic power capacity is insufficient, the controlling unit controls the electric devices according to the intelligent preferred power distribution scheme in which the priorities of the electric devices are arranged in a descending order.

6. A power distribution priority controlling method of a photovoltaic power generation system, comprising:

acquiring in real-time, by a controlling unit of a power distribution priority controller, running state information of electric devices, and storing the running state information in a storage unit;

calculating, by a calculating unit, an electric device priority list based on the running state information of the electric devices and photovoltaic power generation data, which are stored in the storage unit, determining preferred power distribution schemes, and storing the preferred power distribution schemes in the storage unit; and

controlling, by the controlling unit, the electrical devices according to the preferred power distribution schemes stored in the storage unit;

wherein the electric device priority list is calculated according to the equation below, and an intelligent preferred power distribution scheme is determined according to priorities of the electric devices in the descending order;

7. The power distribution priority controlling method of a photovoltaic power generation system according to claim 6, further comprising acquiring in real-time, by the controlling unit of the controller through a communicating unit, power consumption conditions and on/off state data of the electric devices, and storing the power consumption conditions and on/off state data in the storage unit.

8. The power distribution priority controlling method of a photovoltaic power generation system according to claim 7, further comprising calculating, by the calculating unit, an electric device priority list according to the power consumption conditions, the on/off state data of the electric devices and the photovoltaic power generation data, which are stored in the storage data, determining preferred power distribution schemes, and storing the preferred power distribution schemes in the storage unit.

9. The power distribution priority controlling method of a photovoltaic power generation system according to claim 6, further comprising controlling, by the controlling unit, on/off, mode conversion and power distribution of the electric devices according to the preferred power distribution schemes stored in the storage unit.

10. The power distribution priority controlling method of a photovoltaic power generation system according to claim 6, wherein when the photovoltaic power capacity is insufficient, controlling, by the controlling unit, the electrical devices according to the intelligent preferred power distribution scheme, stored in the storage unit, in which the priorities are arranged in a descending order.