Failure message integrated device based on FPGA and ARM hardware platform

A fault information and fault technology, applied in the direction of fault location, etc., can solve the problems of no technical solutions, public reports, etc., and achieve the effect of small size, convenient use, and strong practicability

A fault information and fault technology, applied in the direction of fault location, etc., can solve the problems of no technical solutions, public reports, etc., and achieve the effect of small size, convenient use, and strong practicability

CN102401871AActive Publication Date: 2012-04-04ANHUI NANRUI JIYUAN POWER GRID TECH CO LTD +1
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  • Failure message integrated device based on FPGA and ARM hardware platform
  • Failure message integrated device based on FPGA and ARM hardware platform
  • Failure message integrated device based on FPGA and ARM hardware platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] see figure 1 , including PT / CT board, ARM board, network switch board, serial port board, GPS board in the present embodiment, and the high-speed acquisition board that is made up of A / D sampling chip and FPGA. In order to match the pre-op amplifier, PT and CT require a maximum output of ±10V. The A / D chip selects ADS8556, which samples three voltages and three currents, and the sampling rate is 800K. The ADS8556 chip comes with a sample and hold circuit, uses external reference voltage, external clock, low power consumption, low noise, and three-state output.

[0026] see figure 2 , under the control of FPGA, the AD sampling chip in the high-speed acquisition board collects the secondary side voltage and current signals from the PT / CT board, and obtains sampling data at a frequency of 800KHz. The 800KHz sampling data, on the one hand, is cyclically stored in the designated memory space in DDR2 through the DDR2 controller, as the recording data of the traveling wave ...

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Abstract

The invention discloses a failure message integrated device based on FPGA and ARM hardware platform, which comprises a PT / CT board, an ARM board, a network switch board, a serial port board, a GPS board and a high speed acquisition board composed of an A / D sampling chip and an FPGA; the FPGA has a DDR2 controller, an DMA controller, an FIFO memory and an FIR low-pass filter; and the FPGA is also provided with a starting algorithm module and a fault recorder module. The device organically combines the functions of the fault recorder, a travelling wave distance measuring device and a failure message management sub-station by using parallel processing capability of the high speed AD chip and the FPGA, for realizing accurate localization of fault points when a power transmission line in an electric power system has a fault, and obtaining a complete fault report, thereby complying with intelligentization and miniaturization needs of secondary device of power grid.

Description

technical field [0001] The present invention relates to a fault information synthesis device based on FPGA and ARM hardware platform, especially a fault information collection of secondary side protection device in the power system, which realizes precise fault location by analyzing high-frequency transient signals, and can list A facility for detailed fault reporting. Background technique [0002] With the improvement of substation automation, information from secondary equipment in substations has increasingly become an important basis for accident analysis and system recovery. In order to collect this information, each substation has put into operation a large number of information collection devices and fault location devices, such as fault information management substations, traveling wave ranging devices, fault recorders, etc. These devices can reflect the information when the power grid fails, but their functions are relatively single, and some aspects are even repea...

Claims

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Application Information

Patent Timeline
04 Apr 2012
Publication
CN102401871A
IPC
G01R31/08
Inventors
谢红福; 王皓