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具敎善(Kyo-Sun Koo),權東震(Dong-Jin Kweon),禹貞旭(Jung-Wook Woo),郭周植(Joo-Sik Kwak),姜鍊旭(Yeon-Woog Kang) 대한전기학회 2007 전기학회논문지 Vol.56 No.9
Energized power transformers in substations make unwelcome noises which propagate to nearby residential areas. As the excessive noise level become a target of public grievance than ever, utilities are seeking solutions to it. This paper introduce a power transformer noise prediction program which can give utilities effective solutions. Once a noise source is given, the program calculates the propagated noise level at certain points. The estimated result is rendered as noise contour map. To validate the accuracy of the program, the predicted noises are compared to measured one in real substations and proven to be acceptable within a margin of 5 percent.