Intelligent transformer station process layer data acquisition, conversion and transmission device and control method thereof

Abstract

The invention discloses an intelligent transformer station process layer information acquisition, conversion and transmission device and a control method thereof. The intelligent transformer station process layer data acquisition, conversion and transmission device comprises a process layer sampled value conversion and merging subsystem and an FPGA (Field Programmable Gate Array) subsystem, wherein the process layer sampled value conversion and merging subsystem comprises a multi-channel AD (Analog-to-digital Conversion) and conditioning circuit module, a clock synchronization module, a high-speed CPLD (Complex Programmable Logic Device) module, a DSP (Digital Signal Processor) module and other protocol processing modules; the FPGA subsystem comprises GOOSE (Generic Object Oriented Substation Event) message identification module, and an IEC (International Electrotechnical Commission) 61850-9-2 protocol processing model module; the DSP module is connected with the CPLD module and the clock synchronization module through a parallel bus; the CPLD module is connected with the multi-channel AD and conditioning circuit module through a parallel data channel; pulse signals are collected by the clock synchronization module through a parallel port; and the FPGA subsystem is connected with the process layer sampled value conversion and merging subsystem through an FIFO (First-in, First-out) interface. The intelligent transformer station process layer information acquisition, conversion and transmission device integrates sampling, protocol conversion and data merging, the intermediate process for data transmission is reduced, and real-time transmission of data is facilitated.

Description

technical field [0001] The invention relates to the technical field of substation data acquisition, conversion and transmission, in particular to a technology for a process layer synchronization information acquisition, conversion and transmission device of an intelligent substation. Background technique [0002] At present, the substation automation system has the problem of inconsistency in communication protocols, and communication differences affect the degree of integration of automation, resulting in lower actual automation performance than expected. Therefore, unified communication standards have become an urgent task for substation construction. The unified communication standard is based on the existing IEC / IEEE / ISO / OSI available communication standards, and adopts an open protocol that supports self-description of equipment to achieve the possibility of adding new functions. At the same time, the syntax and semantics of communication will adopt the common data obj...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of non-uniform communication protocols in the existing substation automation system, combining the advantages of IEC61850-9-2 process layer sampling value conversion and merging technology, IEEE1588 network synchronization technology and real-time data transmission technology in GOOSE network, design A data acquisition, conversion and transmission device, which converts information under different protocols into a unified protocol for transmission, so as to realize the all-round collection and analysis of information on the process layer of the current smart substation

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