CAJ | 학술논문

以一台型号为 ZZDFPZ-340800/500-800的特高压换流变压器为研究对象，分别采用时域分析法和频域分析法对换流变压器在非正弦负载电流作用下绕组的损耗进行计算，得到绕组损耗的详细分布情况，并对这2种方法进行对比分析，得知频域分析法更适用于实际设计。针对 GB/T 18494.2-2007和IEC-61378标准在计算绕组各次谐波损耗时未考虑不同频率下集肤深度不同的缺点，引入一个谐波损耗因子对其进行修正，获得更加准确的结果值。以修正后的结果值作为变压器设计时的损耗评估保证基准值，可以降低换流变压器的制造成本。
이일태형호위 ZZDFPZ-340800/500-800적특고압환류변압기위연구대상，분별채용시역분석법화빈역분석법대환류변압기재비정현부재전류작용하요조적손모진행계산，득도요조손모적상세분포정황，병대저2충방법진행대비분석，득지빈역분석법경괄용우실제설계。침대 GB/T 18494.2-2007화IEC-61378표준재계산요조각차해파손모시미고필불동빈솔하집부심도불동적결점，인입일개해파손모인자대기진행수정，획득경가준학적결과치。이수정후적결과치작위변압기설계시적손모평고보증기준치，가이강저환류변압기적제조성본。
A ultra high voltage (UHV) converter transformer was taken as the research object, whose type was ZZDFPZ-340800/500-800. Time-domain analysis and frequency-domain analysis were used to calculate the losses of converter transformer windings subject to non-sinusoidal load current, and obtained the detailed distribution of windings losses. Result comparison between two different methods has been done, and it could be found that frequency-domain analysis method was much more suitable for practical design. In order to overcome the shortcomings of GB/T 18494.2-2007 and IEC-61378 which ignored the effect of different skin depth on eddy losses of windings under the different frequencies, a harmonic losses factor was introduced to correct the losses, and to get a more accurate result. Using the corrected result to form a basis guarantee for the purpose of losses evaluation can reduce the manufacturing cost of the converter transformer.