Intelligent substation merging unit SV sending control method and device

Abstract

The invention discloses an intelligent substation merging unit SV sending control method and device. The method comprises the following steps: obtaining the latest sending time mark of an FPGA; calculating a time scale difference value of the FPGA and the CPU according to the pre-sent time scale of the CPU; judging whether the time scale difference value is continuously greater than a first preset time length for a first preset number of times; if so, judging that the FPGA sends SV abnormally, and carrying out reset operation on the FPGA; and if not, controlling the FPGA to send the SV packet. Whether SV sending is normal or not is determined by judging the time scale difference value of the CPU and the FPGA in the merging unit, and the problem that SV sending is interrupted due to running-away of an SV sending logic state machine of the FPGA is solved; the sending reliability of the merging unit SV is improved, the reliability of the data source of the intelligent substation is enhanced, and safe and stable operation of the intelligent substation is guaranteed.

Description

technical field [0001] The invention relates to the technical field of intelligent substation control, in particular to a method and device for controlling SV transmission of an intelligent substation merging unit. Background technique [0002] With the widespread use of smart substations in substations of various voltage levels, the construction of smart substations has moved from the planning pilot stage to the comprehensive construction stage since 2012. In the planning and pilot stage of smart substation construction, the standards for process-level equipment are gradually improved. The State Grid Corporation has promulgated relevant standards such as "Technical Guidelines for Smart Substations" and "Technical Specifications for Relay Protection of Smart Substations". The standards clearly state that protection should be directly sampled, which is the so-called point-to-point sampling method. The equipment in operation has been in operation for nearly 10 years. Faced wit...

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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a smart substation merging unit SV transmission control method and device, by judging the time scale difference between the CPU and FPGA in the merging unit to determine whether the SV transmission is normal, and solve the logic state machine of FPGA SV transmission The problem of interruption of SV transmission due to running and flying; Improve the reliability of SV transmission of the merging unit, enhance the reliability of the data source of the smart substation, and ensure the safe and stable operation of the smart substation

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