摘要
空载试验是判断电力变压器健康状况的重要项目,由于试验条件限制,现场试验经常通过低压下测得空载试验数据换算成额定电压下的空载损耗来判断变压器状况。通过6种不同接线方式的空载试验,对低压下测得的空载损耗换算为在额定电压下的空载损耗,试验研究分析了6种接线方式下空载损耗测量误差,讨论了不同接线方式对空载损耗换算结果的影响。研究结果表明在22.5%-32.5%的额定电压下进行试验,且当接线方式为不接中性点或者只接电源侧中性点时,空载损耗换算误差最小,最大误差为3%。
No-load test is an important item to judge the health status of power transformers.Due to the limitation of test conditions,field tests often judge the condition of transformers by converting the no-load test data measured at low voltage into the no-load loss at rated voltage.In this paper,the no-load loss measured at low voltage is converted to the no-load loss measured at rated voltage through the no-load test of six different connection modes,and the measurement error of no-load loss under six different connection modes is analyzed,and the influence of different connection modes on the no-load loss conversion results is discussed.The results show that the conversion error of no-load loss is the minimum,and the maximum error is 3% when the rated voltage is 22.5%-32.5%.The wiring mode is not connected to the neutral point or only connected to the neutral point on the power side.
作者
任欣悦
陈天翔
赵燊元
王勋
王叔悦
REN Xinyue;CHEN Tianxiang;ZHAO Shenyuan;WANG Xun;WANG Shuyue(College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu 610059,China)
出处
《电气应用》
2021年第11期19-25,共7页
Electrotechnical Application
基金
国家自然科学区域联合创新基金项目(概率计算的多目标优化神经计算芯片研制,U19A2080)。
关键词
变压器
空载试验
不同接线
试验研究
transformer
no-load test
different wiring
experimental study
