DISPERSED STATE MONITORING DEVICE FOR DISTRIBUTED GENERATION

• US 20150028854A1
• Filed: 12/17/2012
• Published: 01/29/2015
• 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
• Granted Patent: US 9,575,102 B2
• Time in Patent Office: Days
• US Class Current: 324/126
• 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 successively, wherein 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 responsible for conditioning input voltage signals, extracting voltage transient-state and steady-state signals to be analyzed, and inputting the signals to the data processing module. The data processing module is responsible for analyzing the voltage transient-state and steady-state signals, judging the operating state of the distributed power source, and outputting 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 successively, wherein the input of the device is only an ordinary civil plug, and when it is plugged in a 220V domestic power socket, the 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; and

the input conditioning module is responsible for conditioning input voltage signals, extracting voltage transient-state and steady-state signals to be analyzed, and inputting the signals to the data processing module;

the data processing module is responsible for analyzing the voltage transient-state and steady-state signals, judging the operating state of the distributed power source, and outputting a judging result to the network communication module, and then the result is output from the network communication module via a standard RJ45 Ethernet interface.

2. The device of claim 1, wherein the power module consists of a battery unit, a battery charge controller, an AC/DC conversion unit and a DC/DC conversion unit;

the input of the wall socket is connected to an AC side of the AC/DC conversion unit;

the battery unit and the battery charge controller are connected in series and then connected in parallel at a DC side of the AC/DC conversion unit;

meanwhile, the DC side of the AC/DC conversion unit is connected in parallel with the DC/DC conversion unit, and the output of the DC/DC conversion unit supplies power to other modules in the device.

3. 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.

4. 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.

5. 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.