Power quality monitoring device based on intelligent substation

Abstract

The invention discloses a power quality monitoring device based on an intelligent substation. A data processor is used as a core, a plurality of optical fiber Ethernet communication interfaces are connected with input ports of a digital signal processor (DSP) of the data processor through an FPGA module and an A / D converter in sequence. A FLASH ROM storage and a DDR internal storage are connected with input ports of the DSP. An output port of the DSP is connected with an input port of an ARM processor of an OMAPL138 chip. An output port of the ARM processor is connected with a keyboard, a liquid crystal display (LCD), a USB communication interface, a real-time clock circuit, an Ethernet communication interface, a serial communication interface and a file storage system respectively. The optical fiber Ethernet communication interfaces are connected with an intelligent substation system.

Description

technical field [0001] The invention relates to a power quality detection device based on an intelligent substation, which is especially suitable for monitoring and analyzing the power quality of an intelligent substation in a power system. Background technique [0002] When there is a deviation in voltage, current or frequency in the power grid, it will cause the load capacity and performance of the electrical equipment to decline, and even cause the electrical equipment to fail to work normally. The existing power quality monitoring devices lack the ability to monitor and analyze dynamic power quality, the real-time performance is not high, the data processing ability is not strong, and it is impossible to comprehensively analyze and calculate multiple power quality indicators; with the intelligent substation based on the IEC61850 standard There is an urgent need for power quality monitoring devices that meet the access standards of smart substations. Contents of the inv...

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Problems solved by technology

[0002] When there is a deviation in voltage, current or frequency in the power grid, it will cause the load capacity and performance of the electrical equipment to decline, and even cause the electrical equipment to fail to work normally.

The existing power quality monitoring devices lack the ability to monitor and analyze dynamic power quality, the real-time performance is not high, the data processing ability is not strong, and it is impossible to comprehensively analyze and calculate multiple power quality indicators; with the intelligent substation based on the IEC61850 standard There is an urgent need for power quality monitoring devices that meet the standards for smart substation access

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