Message dispersion sending amount tracing apparatus and method based on electrooptic homology

Abstract

The invention relates to a message dispersion sending amount tracing apparatus and method based on electrooptic homology. The apparatus comprises a parameter setting module used for receiving an external control command to set message sending parameters; a clock calibration module used for calibrating a local clock with an input calibration pulse per second signal as reference, outputting a clock error of a standard pulse per second signal and a local clock signal to correct the time of sending synchronous pulses; a synchronous pulse sending module used for generating a starting synchronous pulse used for sending message according to the input standard pulse per second signal and the local clock signal corrected by the clock calibration module and sending the synchronous pulse according to the parameters set by the parameter setting module; and a network message sending module used for framing in sequence and sending messages according to a synchronization relationship established with the synchronous pulse sent by the synchronous pulse sending module with the rising edge of the synchronous pulses sent by the synchronous pulse sending module as reference.

Description

technical field [0001] The present invention relates to an electro-optic homology-based message dispersion value traceability device, and more particularly, relates to an electro-optic homology-based message dispersion value traceability device and method. Background technique [0002] With the deepening of the construction of intelligent substations, the indicators of intelligent secondary equipment have been greatly improved. In order to obtain high-precision process-level sampling data, new requirements are put forward for the sampling accuracy of process-level equipment. The enterprise standard of the State Grid Corporation of China "Q / GDW 11015-2013 Test Specification for Analog Input Type Merging Units" points out that the message of the merging unit The degree of dispersion should not be greater than 10μs. Since some of the bus merging units used for cascading output adopt the IEC61850-9-2LE protocol message, and the interval merging unit of the subsequent stage adopt...

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Problems solved by technology

Although most of the merging unit testers in China can test the dispersion of the message, they do not transmit the value of the dispersion of the message. The test results and the expression of the results are different from each manufacturer, which leads to the test of each manufacturer. The data has no reference value, and it is necessary to establish a traceability system for the sending value of the message dispersion, so as to fundamentally solve the accuracy of the test results of the message dispersion

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