Power System Harmonics and Flicker Analysis for Steel Plants

• Main Authors: An-yie Hsiao, 蕭安邑
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/02460458156349426563

碩士 === 國立中正大學 === 電機工程所 === 94 === To examine the total harmonic distortion of current (THDI), individual harmonic current and voltage flicker at various users’ duty point, the thesis adopts ADX3000 and RPM to measure the harmonic current, voltage flicker and power data at 161kV feeder’s terminal, the second side of the 4th main transformer of some primary substation of Taiwan Power Company and MOF point of 161kV level steel factories, and calculated the governing limits of the harmonic current and voltage flicker at each measured point according to the present standards. The thesis presents how to use the measuring instrument and its software to analyze measured data by statistical method and examines whether conformable to the present standards. Finally, the thesis will present simulations of the power transmission system by ATP edition of Electromagnetic Transients Program (EMTP) to analyze the operating condition when electric arc furnace (EAF) and filter, and discuss the transitional condition and its difference between switch-on and switch-off of the switches used by EAF and filter. The contributions of the thesis include 1) proposing a method to compute governing limits of THDI, individual harmonic current and voltage flicker, and being a reference to research in the future; 2) using the measured results from the harmonic current and voltage flicker of the 161/69kV bus and the MOF point of related users to judge whether corresponding with governing standards, and taking as background information for study in the future; 3) establishing a simulation system to analyze the stable and transition conditions of the EAF and filter.