SMV packet generator for digital energy meter communication protocol test

Abstract

The invention provides an SMV packet generator for a digital energy meter communication protocol test. The SMV packet generator comprises a man-machine interactive system which comprises an industrial control machine which is externally connected to a first DDR2, a DOM, an input keyboard, an LCD and a first Ethernet module respectively, an embedded DSP system which comprises a BF609 module which is externally connected to a second DDR2, a FLASH and a second Ethernet module respectively, a time set module which comprises an antenna, a GPS receiver, a time stamp counter and a comparator which are connected in order, and a power supply module. The output end of the comparator is connected to the embedded DSP system. The time stamp counter is also externally connected to a pulse input module and a clock oscillator at the same time. Both the first Ethernet module and the second Ethernet module are provided with two paths of Ethernet interfaces. The man-machine interactive system, the embedded DSP system and a digital energy meter are in mutual communication and connection through the Ethernet. The SMV packet generator can be used in a digital energy meter communication protocol test, and the technical parameters of synchronization time delay, dispersion and sampling rate can be flexibly controlled.

Description

technical field [0001] The invention relates to an SMV message generator for performing communication protocol test on a digital electric energy meter. Background technique [0002] With the deepening of the national power "12th Five-Year" development plan, there are data that there will be more than 5,000 smart substations in China. As one of the key technologies in smart substations, digital energy meters that comply with the IEC61850 standard have also been widely used. Its application has brought profound changes to the intelligence of the process layer equipment of the smart substation and the station control layer client. [0003] It is very different from the traditional electric energy meter. The digital electric energy meter directly receives the digital voltage and current conforming to the IEC61850-9-1 / 2 protocol from the merging unit through the optical fiber to calculate the electric energy, and then transmits the data result to the client through the MMS commun...

AI Technical Summary

Problems solved by technology

This test must have a standard IEC61850-9-1 / 2 protocol message (hereinafter referred to as SMV message) as input, and the quality of the message will have a certain impact on the output of the digital energy meter

[0004] However, there is currently no SMV message sending instrument or device that is free, flexible, and controllable for synchronization time delay, dispersion, and sampling rate to conduct qualitative and quantitative research tests on this effect.

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