An intelligent substation secondary equipment test platform based on full digital real-time simulation

Abstract

An intelligent substation secondary equipment test platform based on all-digital real-time simulation; a real-time data forwarding platform comprises a digital interface device; the digital interface device comprises a cabinet, and a baseplate, a power panel and a synchronization plate, and from 1 to 6 function plates located inside the cabinet; the baseplate provides a power bus and a synchronous bus to the digital interface device via the plugged in power panel and synchronization plate; the digital interface device performs Ethernet communication with a simulation system computing platform via a 100M exchange chip; the synchronization plate receives an external synchronization signal and transmits the decoded external synchronization signal to the synchronous bus; and all the function plates are connected to the synchronous bus to ensure clock synchronization. The real-time data forwarding platform employs a digital interface device having a cabinet structure, and selects the number of function plates inserted in the digital interface device according to the size of the scale of a measured intelligent substation.

Description

technical field [0001] The invention relates to the field of intelligent substations, in particular to an intelligent substation secondary equipment test platform based on all-digital real-time simulation. Background technique [0002] There are big differences between smart substations and conventional substations in terms of data acquisition and equipment connection. The smart protection device collects digital voltage and current signals of electronic transformers through the merging unit, and no longer uses hardware modules such as isolation transformation, filtering, and sample-and-hold. The transmission of tripping and closing signals is also changed from cable hard wiring to optical fiber Ethernet connection, so the traditional substation testing technology cannot be directly applied to smart substation testing. In order to realize the test or test of the smart substation, the test tool or system should be able to provide digital voltage and current information in com...

AI Technical Summary

Problems solved by technology

The conversion accuracy of the digital interface is not high, and the conversion timing is not accurate, which will introduce errors in the test; the conversion rate of the digital interface is low, so the simulation step size cannot be set to a small value

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