| 摘要 |
<p>The present invention relates to an apparatus and method for measuring electric power, and more particularly, to an apparatus and method for accurately measuring the amount of electric power when a consumer supplies surplus electric power to an electric company and receives electric power from an electric company in power transmission/reception facilities connected in a Y-delta configuration. The present invention is an apparatus for measuring the electric power of power transmission/reception facilities connected in a Y-delta configuration and comprises: a first power measurement unit measuring the amount of electric power on the Y-connection side, a second power measurement unit measuring the amount of neutral point loop electric power on the Y-connection side, and a calculation unit subtracting the measurement of the second power measurement unit from the measurement of the first power measurement unit to determine the actual amount of electric power used. Also, the second power measurement unit in the apparatus for measuring the electric power of power transmission/reception facilities connected in a Y-delta configuration according to the present invention comprises at least one measuring current transformer (CT) and a plurality of measuring potential transformers (PT), where at least one measuring current transformer detects the neutral point current (In) of the neutral point ground line on the Y-connection side.</p> |
