Diagnostic Degradation Process of Power Transformer Insulation System: Harmonic Current Impact to Capability of Transformer ＃7 Pulogadung s/s
Harmonics is a phenomenon that occurs at power systems caused by a non linear load. It would generate high frequency waves resulting from the multiplication of its fundamental waves. Transformer losses can be divided into losses with loads (load losses) and zero load losses (no load losses). Losses that are caused by harmonic current will cause an increase of copper losses and stray flux losses. Whereas harmonic voltage will cause an increase of losses on the transformers core. In combination, the existence of harmonic in the transformers load will cause the temperature at the top oil increase; hence it will also increase the hot spot temperature. It also cause the technical age of the transformer become shorter due to degradation of the insulation performance. In this paper, the harmonic loads influence on decreasing capacities and increasing temperature of the transformer will be discussed. Transformer number ＃7 on Pulogadung substation connected with industrial and household load will be used as example, and several plausible risks rmer will be discussed.
harmonics transformer
Sumaryadi Bambang CAHYONO Indera ARIFIANTO
PT PLN (Persero) P3B Jawa Bali Region Jakarta-Banten Jl Mayjen Sutoyo No 1 Cililitan Jakarta Timur, PT PLN (Persero) P3B Jawa Bali Headquarter, Depok, Indonesia PT.PLN P3B Jawa-Bali, West Java Region, Bandung, INDONESIA
国际会议
哈尔滨
英文
216-219
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）