Digitalized protection and measuring/control device integrated with metering function

Abstract

The invention discloses a digitalized protection and measuring / control device integrated with a metering function. The device comprises a protection and measuring / control CPU module, an input / output module, and a sampling module. The device is characterized in that: a metering module is also included in the device; the metering module uses a built-in metering mutual inductor to receive analog quantity sampling data; or the metering module receives IEC61850-9-2 format sampling data through an optical port of the protection and measuring / control CPU module to carry out an electric energy calculation. The device can meet application demands of the conventional transformer station and the intelligent transformer station; and the alternating current sampling can support the conventional analog quantity acquisition and can receive the sampling data of the IEC61850-9-2 or IEC60044-8 output format from a merging unit. The trip-out mode can support the conventional contact mode output, and can also support outputting a trip-out signal in a GOOSE network message mode. The original installation devices are reduced; the integrated level of the device is increased reasonably; and the device can realize the protection, measuring and metering function.

Description

technical field [0001] The invention belongs to the field of electric power system relay protection, and relates to the traditional intelligent integration technology of a protection device, a measurement and control device and a metering meter. Background technique [0002] With the rapid expansion of the scale of the smart grid, new construction, expansion, and renovation projects have increased significantly. Traditional substations and smart substations will coexist in a large number for a long period of time. At present, protection measurement and control devices and metering meters are purchased and installed separately. For example, when For traditional sampling, two devices of protection measurement and control and metering meter need to be installed in the screen cabinet and connected separately. When digital sampling is adopted, the data of the MU needs to be forwarded to the protection measurement and control device and the electric meter at the same time in the p...

AI Technical Summary

Problems solved by technology

With the digital sampling technology, the improvement of the integration foundation, and the continuous deepening of the construction of the smart grid, there is no special integrated device in China that can simultaneously have the functions of protection, measurement, control and measurement.

At the same time, there is no integrated protection, measurement, control and metering device that can be connected to digital sampling or traditional analog sampling as needed

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