Middle-high voltage digital mutual inductor

Abstract

The invention relates to a metering, monitoring and protecting system for the field of power transmission and distribution of a local or remote power grid with voltage grade being 6kV and above 6kV, and especially relates to a middle-high voltage digital mutual inductor for metering, monitoring and protecting in the field of transmission and distribution of 6kV and above 6kV electric power. The middle-high voltage digital mutual inductor comprises a sampling unit, a data conversion unit, a data transmission unit and a power supply unit. The middle-high voltage digital mutual inductor applied to the field of transmission and distribution of 6kV and above 6kV electric power is used for metering and monitoring a power grid with voltage grade being 6kV and above 6kV, realizing high-speed transmission exchange of optical fiber / wireless data, collecting parameters of electric quantity, current, voltage, phase, power, power factor, grid frequency, various waveforms and the like, and speedily transmitting the parameters to a spaced layer terminal through an optical fiber / wireless transmission unit. The middle-high voltage digital mutual inductor quickly responds to the requirement of a safety protecting system for collecting running data at real time and quickly transmitting the running data and meets the demand for monitoring and protecting the power grid with voltage grade being 6kV and above 6kV and metering the electric energy of the power grid.

Description

field of invention [0001] The invention relates to a novel middle and high voltage digital transformer applied to a power grid with a voltage level of 6KV and above, and is specifically applied to measurement, monitoring and protection in the field of power transmission and distribution of a power grid with a voltage level of 6KV and above. Background technique [0002] At present, electromagnetic transformers are widely used in the field of power transmission and distribution of 6KV and above voltage level grids. Due to its own principle defects, magnetic saturation is easy to occur during use, and the safety hazard is large; the attenuation of harmonics is very large, and it cannot be used for a comprehensive analysis of power quality; it is large, requires a lot of copper and iron, and consumes resources. Conducive to low-carbon environmental protection, not conducive to installation and maintenance. There are many kinds of electronic transformers on the market now, but ...

AI Technical Summary

Problems solved by technology

Due to its own principle defects, magnetic saturation is easy to occur during use, and the safety hazard is large; the attenuation of harmonics is very large, and it cannot be used for a comprehensive analysis of power quality; it is large, requires a lot of copper and iron, and consumes resources. Conducive to low-carbon environmental protection, not conducive to installation and maintenance

There are many kinds of electronic transformers on the market now, but due to the poor operation stability, the accuracy cannot meet the requirements of use, the transformation ratio is greatly affected by the environment, and the cost is high, so it is difficult to popularize and use them in large quantities.

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