CAJ | 학술논문

鉴于接地变压器的设计要求，高压绕组采用Z型接线，为配套的消弧线圈提供不平衡电压。接地变压器高压侧直流电阻线间不平衡度超出《电力设备预防性试验规程》（以下简称《规程》）的要求，依照《规程》规定，如果电阻相间差在出厂时超出规定，制造厂已说明了偏差的原因，与以前相同部位测得值相比，其变化不大于2%。这就需要把高压侧直流电阻交接试验数值与出厂值换算到同一油温下作比较。油温测量的准确度将直接影响接地变压器高压侧直流电阻的合格率，而油温的准确测量非常重要，否则，极易出现差错。
감우접지변압기적설계요구，고압요조채용Z형접선，위배투적소호선권제공불평형전압。접지변압기고압측직류전조선간불평형도초출《전력설비예방성시험규정》（이하간칭《규정》）적요구，의조《규정》규정，여과전조상간차재출엄시초출규정，제조엄이설명료편차적원인，여이전상동부위측득치상비，기변화불대우2%。저취수요파고압측직류전조교접시험수치여출엄치환산도동일유온하작비교。유온측량적준학도장직접영향접지변압기고압측직류전조적합격솔，이유온적준학측량비상중요，부칙，겁역출현차착。
In view of the grounding transformer design requirements, high-voltage windings Z type terminal for supporting the Petersen coil provides voltage imbalance. Indirectly transformer high-side DC resistance unbalance line beyond "preventive test code for electrical equipment" (hereinafter referred to as the "Regulations") requirements, in accordance with the "Regulations" provides that if the resistance phase difference at the factory out of specification, the manufacturer has explained Cause of deviation compared to the same site before the measured values, the change is not greater than 2%. This requires the high side over test DC resistance value and the value is converted into the same oil factory testimony to compare. Oil temperature measurement accuracy will directly affect the passing rate of the high-pressure side of the grounding transformer DC resistance, and accurately measure the oil temperature is very important, otherwise prone to errors.