Household photovoltaic system and smart micro-grid system

Patent metadata

Field	Value
Publication number	US-10218183-B2
Application number	US-201615521470-A
Country	US
Kind code	B2
Filing date	Oct 28, 2016
Priority date	Jan 26, 2016
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

The present disclosure provides a household photovoltaic system and a smart micro-grid system. The household photovoltaic system includes a photovoltaic assembly module, a household photovoltaic inverter and an AC grid. The household photovoltaic system further includes a monitoring assembly and a wireless communication assembly. The monitoring assembly includes DC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the photovoltaic assembly module, and AC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the household photovoltaic inverter. The wireless communication assembly includes a DC-side wireless communication assembly and an AC-side wireless communication assembly which are configured to transmit the operating parameters monitored by each DC-side monitoring assembly and each AC-side monitoring assembly to a predetermined monitoring terminal.

First claim

What is claimed is:

1. A household photovoltaic system, comprising a photovoltaic assembly module, a household photovoltaic inverter and an alternating current (AC) grid, wherein
the household photovoltaic system further comprises a monitoring assembly and a wireless communication assembly;
the monitoring assembly comprises direct current (DC)-side monitoring assemblies each configured to monitor an operating parameter of an output end of the photovoltaic assembly module, and AC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the household photovoltaic inverter; and
the wireless communication assembly comprises a DC-side wireless communication assembly configured to transmit the operating parameter monitored by each DC-side monitoring assembly to a predetermined monitoring terminal, and an AC-side wireless communication assembly configured to transmit the operating parameter monitored by each AC-side monitoring assembly to the predetermined monitoring terminal.

2. The household photovoltaic system according to claim 1 , wherein the DC-side wireless communication assembly comprises one Zigbee central node and several Zigbee remote nodes;
each Zigbee remote node is configured to receive monitoring data transmitted by the DC-side monitoring assemblies within a first predetermined range in accordance with a predetermined period, and transmit the received monitoring data to the Zigbee central node in a remote wireless communication mode; and
the Zigbee central node is configured to receive monitoring data from the Zigbee remote nodes within a second predetermined range, and transmit the received monitoring data to the monitoring terminal.

3. The household photovoltaic system according to claim 1 , wherein the AC-side wireless communication assembly comprises one Zigbee central node and several Zigbee remote nodes;
each Zigbee remote node is configured to receive monitoring data transmitted by the AC-side monitoring assemblies within a first predetermined range in accordance with a predetermined period, and transmit the received monitoring data to the Zigbee central node in a remote wireless communication mode; and
the Zigbee central node is configured to receive monitoring data from the Zigbee remote nodes within a second predetermined range, and transmit the received monitoring data to the monitoring terminal.

4. The household photovoltaic system according to claim 1 , wherein the monitoring assembly further comprises ammeter-side monitoring assemblies each configured to monitor an operating parameter of a predetermined grid-access ammeter, and the wireless communication assembly further comprises an ammeter-side wireless communication assembly configured to transmit the operating parameter monitored by each ammeter-side monitoring assembly to the monitoring terminal.

5. The household photovoltaic system according to claim 4 , wherein the ammeter-side wireless communication assembly comprises one Zigbee central node and several Zigbee remote nodes;
each Zigbee remote node is configured to receive monitoring data transmitted by the ammeter-side monitoring assemblies within a first predetermined range in accordance with a predetermined period, and transmit the received monitoring data to the Zigbee central node in a remote wireless communication mode; and
the Zigbee central node is configured to receive monitoring data from the Zigbee remote nodes within a second predetermined range, and transmit the received monitoring data to the monitoring terminal.

6. The household photovoltaic system according to claim 2 , wherein the first predetermined range is a range having a radius of 1 to 500 m, with each Zigbee remote node as a center.

7. The household photovoltaic system according to claim 2 , wherein the second predetermined range is a range having a radius of 1 to 5 km, with the Zigbee central node as a center.

8. The household photovoltaic system according to claim 2 , wherein the remote wireless communication mode is a General Packet Radio Service (GPRS) and/or Code Division Multiple Access (CDMA) remote wireless communication mode.

9. The household photovoltaic system according to claim 1 , wherein the monitoring terminal is an upper computer and/or a handheld smart device.

10. A smart micro-grid system, comprising a direct current (DC) micro-grid system, a household photovoltaic inverter and an alternating current (AC) grid, wherein
the smart micro-grid system further comprises a monitoring assembly and a wireless communication assembly;
the monitoring assembly comprises DC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the DC micro-grid system, and AC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the household photovoltaic inverter; and
the wireless communication assembly comprises a DC-side wireless communication assembly configured to transmit the operating parameter monitored by each DC-side monitoring assembly to a predetermined monitoring terminal, and an AC-side wireless communication assembly configured to transmit the operating parameter monitored by each AC-side monitoring assembly to the predetermined monitoring terminal.

11. The smart micro-grid system according to claim 10 , wherein the DC-side wireless communication assembly comprises one Zigbee central node and several Zigbee remote nodes;
each Zigbee remote node is configured to receive monitoring data transmitted by the DC-side monitoring assemblies within a first predetermined range in accordance with a predetermined period, and transmit the received monitoring data to the Zigbee central node in a remote wireless communication mode; and
the Zigbee central node is configured to receive monitoring data from the Zigbee remote nodes within a second predetermined range, and transmit the received monitoring data to the monitoring terminal.

12. The smart micro-grid system according to claim 10 , wherein the AC-side wireless communication assembly comprises one Zigbee central node and several Zigbee remote nodes;
each Zigbee remote node is configured to receive monitoring data transmitted by the AC-side monitoring assemblies within a first predetermined range in accordance with a predetermined period, and transmit the received monitoring data to the Zigbee central node in a remote wireless communication mode; and
the Zigbee central node is configured to receive monitoring data from the Zigbee remote nodes within a second predetermined range, and transmit the received monitoring data to the monitoring terminal.

13. The smart micro-grid system according to claim 10 , wherein the monitoring assembly further comprises ammeter-side monitoring assemblies each configured to monitor an operating parameter of a predetermined grid-access ammeter, and the wireless communication assembly further comprises an ammeter-side wireless communication assembly configured to transmit the operating parameter monitored by each ammeter-side monitoring assembly to the monitoring terminal.

14. The smart micro-grid system according to claim 13 , wherein the ammeter-side wireless communication assembly comprises one Zigbee central node and several Zigbee remote nodes;
each Zigbee remote node is configured to receive monitoring data transmitted by the ammeter-side monitoring assemblies within a first predetermined range in accordance with a predetermined period, and transmit the received monitoring data to the Zigbee central node in a remote wireless communication mode; and
the Zigbee central node is configured to receive monitoring data from the Zigbe

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Energy Tech Co Ltd

Inventors

• Chen Cheng
• Han Xiaoyan
• Song Xingbin

Classifications

• Y04S10/123

  the energy generation units being or involving renewable energy sources · CPC title

• H02S20/30

  Supporting structures being movable or adjustable, e.g. for angle adjustment · CPC title

• H02S50/00 Primary

  Monitoring or testing of PV systems, e.g. load balancing or fault identification · CPC title

• H02S10/00 Primary

  PV power plants; Combinations of PV energy systems with other systems for the generation of electric power · CPC title

• H02S30/20

  Collapsible or foldable PV modules · CPC title