Instrument transformer and apparatus for detecting an amount of power using the same

Abstract

Disclosed is an instrument transformer detecting an amount of power supplied to a load via a high voltage line, wherein the instrument transformer is integrally configured with a current level converter, a voltage level converter and a power amount calculating module so that it detects an amount of power supplied via the high voltage line and transmits the detected amount of power to a power amount management unit as a digital signal to correctly detect the amount of power.

Description

[0001] References to related applications [0002] This application is based on and takes priority from Korean application No. 10-2007-0129810 filed on December 13, 2007, the entirety of which is hereby incorporated by reference. technical field [0003] The following description generally relates to instrument transformers and devices for detecting power values ​​using the instrument transformers, and in particular to instrument transformers and devices capable of accurately detecting power values ​​supplied to loads via high-voltage lines and transmitting the detected power values. To the external power value control unit, so as to manage the power value through the external power value control unit, and use the instrument transformer to detect the power value. Background technique [0004] The level of current and the level of voltage supplied to the load via the high voltage line is very high. Therefore, when detecting the power value supplied to the load via the high v...

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Problems solved by technology

[0009] However, in the case where the distance between the instrument transformer and the wattmeter is long, the instrument transformer cannot correctly transmit the analog signals of the current and voltage converted to low levels to the wattmeter when detecting a power value, and a large amount of noise is generated. error

[0010] In other words, during the transfer of the analog signal from the meter transformer to the wattmeter, a lot of noise is induced and the analog signal level is attenuated, since there is a difference between the power value detected by the wattmeter and the actual power supplied to the load via the high voltage line. Larger differences between power values

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