Dispersed state monitoring device for distributed generation

• US 9,575,102 B2
• Filed: 12/17/2012
• Issued: 02/21/2017
• Est. Priority Date: 09/18/2012
• Status: Active Grant

• Current Assignee: Jining Power Supply Company of State Grid Shandong Electric Power Company, State Grid Corporation of China
• Original Assignee: Jining Power Supply Company of State Grid Shandong Electric Power Company, State Grid Corporation of China
• Inventors: Qian, Qinglin, Wang, Yanliang, Xu, Shuxi, Chen, Xiaohong, Zhu, Lifeng, Liu, Zongjie, Kong, Ping, Xu, Lei, Ding, Zijia, Xiao, Yundong, Yuan, Bing
• Primary Examiner(s): Nguyen, Tung X
• Assistant Examiner(s): Alejnikov, Jr., Robert P
• Application Number:
  US14/368,424
• Publication Number:
  US 20150028854A1
• Time in Patent Office: 1,527 Days
• Field of Search: 324/126, 324/113, 324/117.H
• US Class Current: 1/1
• CPC Class Codes: G01R 19/2513 Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
• CPC Class Codes: G01R 21/006 Measuring power factor
• CPC Class Codes: G01R 21/06 by measuring current and voltage G01R21/08 - G01R21/133 take precedence
• CPC Class Codes: G01R 21/133 by using digital technique
• CPC Class Codes: G01R 22/063 related to remote communication
• CPC Class Codes: G01R 31/42 AC power supplies

Abstract

A dispersed state monitoring device for distributed generation includes a power module, an input conditioning module, a data processing module and a network communication module which are connected one after another in this order. The power is input, via a civil plug and a 220V power socket, to the power module and the input conditioning module in the device at the same time. The power module ensures normal operation of the device through conditioning of a voltage. The input conditioning module is configured to condition input voltage signals, extract voltage transient-state and steady-state signals to be analyzed, and inputting the signals to the data processing module. The data processing module is configured to analyze the voltage transient-state and steady-state signals, judge the operating state of the distributed power source, and output a judging result to the network communication module. The result is output from the network communication module via a standard RJ45 Ethernet interface.

Claims

1. A dispersed state monitoring device for distributed generation, comprising a power module, an input conditioning module, a data processing module and a network communication module which are connected one after another in this order,

wherein the device only receives input from an ordinary civil plug, and when the device is plugged in a 220V domestic power socket, power is input to the power module and the input conditioning module in the device at the same time;

the power module ensures normal operation of the device through conditioning of a voltage of the input power;

the input conditioning module is configured to condition input voltage signals, extract voltage transient-state and steady-state signals to be analyzed, and input the signals to the data processing module;

the data processing module is configured to analyze voltage transient-state and steady-state signals, judge the operating state of the distributed power source, and output a judging result to the network communication module; and

the network communication module outputs the result via a standard RJ45 Ethernet interface.

2. The device of claim 1, wherein while the input of the wall socket is connected to the power module, the socket is also connected to the input conditioning module, to achieve conversion of a phase voltage signal with a rated value of 220V to a voltage signal between −

5V and +5V.

3. The device of claim 1, wherein the data processing module comprises a singlechip MSP430F149, a clock chip and a synchronous dynamic random access memory, wherein the synchronous dynamic random access memory, the MSP430F149 and the clock chip are connected via an I/O expansion bus.

4. The device of claim 1, wherein the network communication module consists of an Ethernet communication controller DM9000 and an RJ45 interface;

the DM9000 is connected with the I/O expansion bus of the singlechip MSP430F149 at one end, and is connected with the RJ45 interface at the other end, to receive fixed-value data from outside and send a processing result of the device.

5. A dispersed state monitoring device for distributed generation, comprising a power module, an input conditioning module, a data processing module and a network communication module which are connected one after another in this order,

wherein the device only receives input from an ordinary civil plug, and when the device is plugged in a 220V domestic power socket, power is input to the power module and the input conditioning module in the device at the same time;

the power module ensures normal operation of the device through conditioning of a voltage of the input power, the power module comprising a battery unit, a battery charge controller, an AC/DC conversion unit and a DC/DC conversion unit, the input of the wall socket being connected to an AC side of the AC/DC conversion unit, the battery unit and the battery charge controller being connected in series and then connected in parallel at a DC side of the AC/DC conversion unit;

the input conditioning module is configured to condition input voltage signals, extract voltage transient-state and steady-state signals to be analyzed, and input the signals to the data processing module;

the data processing module is configured to analyze voltage transient-state and steady-state signals, judge the operating state of the distributed power source, and output a judging result to the network communication module; and

the network communication module outputs the result via a standard RJ45 Ethernet interface.

6. The device of claim 5, wherein while the input of the wall socket is connected to the power module, the socket is also connected to the input conditioning module, to achieve conversion of a phase voltage signal with a rated value of 220V to a voltage signal between −

5V and +5V.

7. The device of claim 5, wherein the data processing module comprises a singlechip MSP430F149, a clock chip and a synchronous dynamic random access memory, wherein the synchronous dynamic random access memory, the MSP430F149 and the clock chip are connected via an I/O expansion bus.

8. The device of claim 5, wherein the network communication module consists of an Ethernet communication controller DM9000 and an RJ45 interface;

the DM9000 is connected with the I/O expansion bus of the singlechip MSP430F149 at one end, and is connected with the RJ45 interface at the other end, to receive fixed-value data from outside and send a processing result of the device.

9. A dispersed state monitoring device for distributed generation, comprising a power module, an input conditioning module, a data processing module and a network communication module which are connected one after another in this order,

wherein the device only receives input from an ordinary civil plug, and when the device is plugged in a 220V domestic power socket, power is input to the power module and the input conditioning module in the device at the same time;

the power module ensures normal operation of the device through conditioning of a voltage of the input power, the power module comprising a battery unit, a battery charge controller, an AC/DC conversion unit and a DC/DC conversion unit, the input of the wall socket being connected to an AC side of the AC/DC conversion unit, the battery unit and the battery charge controller being connected in series and then connected in parallel at a DC side of the AC/DC conversion unit, the DC side of the AC/DC conversion unit being connected with the DC/DC conversion unit, and the output of the DC/DC conversion unit supplying power to the input conditioning module;

the input conditioning module is configured to condition input voltage signals, extract voltage transient-state and steady-state signals to be analyzed, and input the signals to the data processing module;

the data processing module is configured to analyze voltage transient-state and steady-state signals, judge the operating state of the distributed power source, and output a judging result to the network communication module; and

the network communication module outputs the result via a standard RJ45 Ethernet interface.

10. The device of claim 9, wherein while the input of the wall socket is connected to the power module, the socket is also connected to the input conditioning module, to achieve conversion of a phase voltage signal with a rated value of 220V to a voltage signal between −

5V and +5V.

11. The device of claim 9, wherein the data processing module comprises a singlechip MSP430F149, a clock chip and a synchronous dynamic random access memory, wherein the synchronous dynamic random access memory, the MSP430F149 and the clock chip are connected via an I/O expansion bus.

12. The device of claim 9, wherein the network communication module consists of an Ethernet communication controller DM9000 and an RJ45 interface;

the DM9000 is connected with the I/O expansion bus of the singlechip MSP430F149 at one end, and is connected with the RJ45 interface at the other end, to receive fixed-value data from outside and send a processing result of the device.