Digital electric energy meter calibration device based on FT3 interface
A digital electric energy meter and calibration device technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., to achieve the effects of strong scalability, strong time control ability, and short development cycle
Active Publication Date: 2014-06-04
STATE GRID CORP OF CHINA +2
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[0003] In smart substations, digital energy meters have been widely used, which puts forward requirements for the calibration of digital energy meters. However, the current calibration devices on the market can only be verified by IEC61850-9-1 or IEC61850 -9-2 / LE communication protocol for digital energy meters, therefore, it is urgent to develop a calibration device for digital energy meters based on the IEC60044-7 / 8 communication protocol that adapts to the development of smart grids
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[0018] The present invention will be further described below in conjunction with the accompanying drawings.
[0019] Such as figure 1 Shown, be a kind of verification device of the digital electric energy meter based on FT3 interface, comprise A / D acquisition module, DSP processing module, FPGA co-processing module, RS232 communication module, photoelectric conversion module; Described A / D acquisition module, The DSP processing module, the FPGA co-processing module and the photoelectric conversion module are connected in sequence, and the RS232 communication module is connected with the DSP processing module. Described A / D acquisition module adopts 24 ADS1278 high-precision low-noise AD conversion chips of TI Company and 512 times of oversampling technology, improves analog quantity conversion precision, reduces system error; Described DSP processing module adopts BF607 of ADI Company, The DSP processor is a high-performance symmetric dual-core processor with a maximum MAC op...
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The invention discloses a digital electric energy meter calibration device based on an FT3 interface. The calibration device comprises an A / D collection module, a DSP processing module, an FPGA co-processing module, an RS232 communication module and a photovoltaic conversion module. The A / D collection module, the DSP processing module, the FPGA co-processing module and the photovoltaic conversion module are connected in sequence. The RS232 communication module is connected with the DSP processing module. The digital electric energy meter calibration device can achieve various calibration modes such as virtual calibration and virtual load calibration, achieve compatibility of 60044-7 / 8 and protocols in 'DL / T282-2012 merging unit technical conditions', and comprehensively evaluate the communication function and fault-tolerant ability of a digital electric energy meter. The digital electric energy meter calibration device is reasonable in design, simple in structure, short in development cycle, easy and convenient to use and high in expandability, facilitates on-site and laboratorial detection work, and meets the requirement for technology upgrading of a digital substation in the future.
Description
technical field [0001] The invention relates to a calibration device for a digital electric energy meter based on an FT3 interface, belonging to the technical field of electric energy meters. Background technique [0002] In the development of the smart grid, the smart substation is one of the important components of the smart grid, and the electric energy metering device is responsible for the grid trade settlement and internal economic index assessment. The digitized power system of the agreement has been applied more and more, and the corresponding all-digital electric energy metering system has also emerged as the times require. The core of the all-digital electric energy metering system is the digital electric energy meter. The biggest difference from traditional mechanical and electronic watt-hour meters is that the signal input of digital watt-hour meters is through electronic transformers or merging units to output all-digital signals, which are transmitted using sp...
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IPC IPC(8): G01R35/04
Inventor 段梅梅穆小星张健黄奇峰徐晴蔡奇新刘建沈秋英
Owner STATE GRID CORP OF CHINA