MONITORING SYSTEM FOR DETECTING ERROR OF HARMONIC FILTER, CAPACITOR UNITS FORMING HARMONIC FILTER, AND MONITORING METHOD FOR MONITORING SYSTEM FOR DETECTING ERROR OF HARMONIC FILTER

摘要

PROBLEM TO BE SOLVED: To detect an error of a harmonic filter included in a high voltage direct current transmission system.SOLUTION: A power loss measuring system includes: a harmonic filter 100 with a plurality of elements; a monitoring sensor unit 200 sensing variation in impedance of the plurality of elements; and a controller 300 calculating loss in the harmonic filter 100 using the amount of variation in impedance of the plurality of elements.SELECTED DRAWING: Figure 3