Monitoring system for air conditioning systems based on distributed power generation and air conditioning system using same

• US 10,088,187 B2
• Filed: 09/12/2014
• Issued: 10/02/2018
• Est. Priority Date: 12/06/2013
• Status: Active Grant

• Current Assignee: GREE Electric Appliances Incorporated of Zhuhai
• Original Assignee: GREE Electric Appliances Incorporated of Zhuhai
• Inventors: He, Yuxue, Zhao, Zhigang, Song, Haichuan, Lin, Chenglin, Jiang, Chunmiao
• Primary Examiner(s): Yanchus, III, Paul
• Application Number:
  US15/101,333
• Publication Number:
  US 20160282004A1
• Time in Patent Office: 1,481 Days
• Field of Search: None
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 11/47 Responding to energy costs
• CPC Class Codes: F24F 11/54 using one central controller connected to several sub-controllers
• CPC Class Codes: F24F 11/56 Remote control
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 2219/2638 Airconditioning
• CPC Class Codes: G05B 2219/2642 Domotique, domestic, home control, automation, smart house
• CPC Class Codes: H02S 10/10 including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems combinations with gas-turbine plants F02C6/00
• CPC Class Codes: H04L 12/2816 Controlling appliance services of a home automation network by calling their functionalities arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

A monitoring system for air conditioning systems based on distributed power generation and an air conditioning system using same. The monitoring system for air conditioning systems comprises a distributed power generation monitoring subsystem, a heating and ventilation energy management subsystem and a main monitoring system. The distributed power generation monitoring subsystem and the heating and ventilation energy management subsystem respectively monitor power generation status information of a distributed power generation device in an air conditioning system based on distributed power generation and power consumption status information of inherent devices in the system. The main monitoring system acquires monitoring data of the two subsystems by using a uniform first transmission protocol. In addition, the main monitoring system controls the distributed power generation device and the inherent devices in the air conditioning system according to the power generation status information and the power consumption status information.

Claims

1. An air conditioning system monitoring system based on distributed power generation, applied to an air conditioning system based on distributed power generation, wherein the air conditioning system comprises distributed power generation devices and inherent devices in the air conditioning system, the inherent devices in the air conditioning system is powered by the distributed power generation devices or by the distributed power generation devices and the mains supply;

and the air conditioning system monitoring system comprises;

a distributed power generation monitoring subsystem, configured to monitor power generation status information of the distributed power generation devices;

a heating and ventilating energy management subsystem, configured to monitor power consumption status information of the inherent devices in the air conditioning system; and

a main monitoring system, configured to obtain the power generation status information and the power consumption status information, and comprehensively monitor and control the air conditioning system based on the power generation status information and the power consumption status information, wherein the main monitoring system comprises;

a first main control subunit, configured to obtain and store the power generation status information, and send the power consumption status information to the distributed power generation monitoring subsystem;

a second main control subunit, configured to obtain and store the power consumption status information, and send the power generation status information to the heating and ventilating energy management subsystem; and

a third main control subunit, configured to generate a main control instruction based on at least one of the power generation status information and the power consumption status information, wherein the main control instruction comprises at least one of a first main control instruction to control power generation status of the distributed power generation devices and a second main control instruction to control power consumption status of the inherent devices in the air conditioning system, and

wherein the distributed power generation monitoring subsystem and the heating and ventilating energy management subsystem are configured to exchange data with the main monitoring system by using a first transmission protocol respectively.

2. The air conditioning system monitoring system based on distributed power generation according to claim 1, wherein the first transmission protocol comprises the BACnet/IP protocol.

3. The air conditioning system monitoring system based on distributed power generation according to claim 1, wherein the distributed power generation devices are photovoltaic power generation devices.

4. The air conditioning system monitoring system based on distributed power generation according to claim 1, further comprising:

a remote control terminal, configured to exchange data with the main monitoring system by using the TCP/IP protocol; and

/or

a system host human-machine interface, configured to exchange data with the main monitoring system by using the RS485 protocol, the BACnet protocol, the Modbus protocol or the CAN protocol.

5. The air conditioning system monitoring system based on distributed power generation according to claim 1, wherein

the distributed power generation devices comprise a combiner box configured to converge and output direct current generated by photovoltaic modules, and an inverter configured to supply power to an alternating current load;

the power generation status information comprises information on current outputted by the combiner box which represents a magnitude of power generated by the distributed power generation devices and information on current outputted by the inverter which represents a magnitude of power supplied by the distributed power generation devices; and

the distributed power generation monitoring subsystem comprises a data collector configured to obtain the information on the current outputted by the combiner box and the information on the current outputted by the inverter, and exchange data with the main monitoring system by using the first transmission protocol.

6. The air conditioning system monitoring system based on distributed power generation according to claim 5, wherein the distributed power generation monitoring subsystem further comprises a power generation monitoring human-machine interface connected to the data collector and configured to display a collection result of the data collector.

7. The air conditioning system monitoring system based on distributed power generation according to claim 1, wherein

the inherent devices in the air conditioning system comprise at least one of a system host, a refrigerating water pump, a cooling water pump and a cooling tower;

and

the heating and ventilating energy management subsystem comprises;

a main controller, configured to exchange data with the main monitoring system by using the first transmission protocol; and

electric meters, configured to detect the inherent devices in the air conditioning system in a one-to-one correspondence to obtain the power consumption status information, and output the power consumption status information to the main controller.

8. The air conditioning system monitoring system based on distributed power generation according to claim 7, wherein the heating and ventilating energy management subsystem further comprises:

a field controller, configured to obtain the second main control instruction by means of the main controller, and perform a linkage control on the inherent devices in the air conditioning system in response to the second main control instruction.

9. The air conditioning system monitoring system based on distributed power generation according to claim 7, wherein the heating and ventilating energy management subsystem further comprises:

a regional controller, configured to generate an air parameter control instruction in response to a user operation instruction, and exchange data with the main controller; and

an end controller, configured to control an indoor air parameter in response to the air parameter control instruction, wherein the end controller comprises at least one of a temperature controller, a fresh air controller and a return air controller.

10. An air conditioning system based on distributed power generation, comprising distributed power generation devices and inherent devices in the air conditioning system, wherein

the inherent devices in the air conditioning system is powered by the distributed power generation devices or by the distributed power generation devices and the mains supply;

and

the air conditioning system further comprises an air conditioning system monitoring system based on distributed power generation, wherein the air conditioning system monitoring system is applied to the air conditioning system based on distributed power generation, and the air conditioning system monitoring system comprises;

a distributed power generation monitoring subsystem, configured to monitor power generation status information of the distributed power generation devices;

a heating and ventilating energy management subsystem, configured to monitor power consumption status information of the inherent devices in the air conditioning system; and

a main monitoring system, configured to obtain the power generation status information and the power consumption status information, and comprehensively monitor and control the air conditioning system based on the power generation status information and the power consumption status information, wherein the main monitoring system comprises;

a first main control subunit, configured to obtain and store the power generation status information, and send the power consumption status information to the distributed power generation monitoring subsystem;

a second main control subunit, configured to obtain and store the power consumption status information, and send the power generation status information to the heating and ventilating energy management subsystem; and

a third main control subunit, configured to generate a main control instruction based on at least one of the power generation status information and the power consumption status information, wherein the main control instruction comprises at least one of a first main control instruction to control power generation status of the distributed power generation devices and a second main control instruction to control power consumption status of the inherent devices in the air conditioning system, and

wherein the distributed power generation monitoring subsystem and the heating and ventilating energy management subsystem are configured to exchange data with the main monitoring system by using a first transmission protocol respectively.

11. The air conditioning system according to claim 10, wherein the inherent devices in the air conditioning system comprise a centrifugal water chiller and/or a screw water chiller.