@thesis{thesis,
		author={Diantari  Retno Aita and Nasution  Sahminan},
		title ={ANALISIS DAMPAK GANGGUAN KORONA TERHADAP RUGI-RUGI DAYA DAN ENERGI TAK TERJUAL SERTA PENANGGULANGAN GANGGUAN KORONA PADA KUBIKEL 20 KV GARDU DISTRIBUSI K57 DAN T24B  PT PLN (PERSERO) UP3 JATINEGARA},
		year={2022},
		url={http://156.67.221.169/5232/},
		abstract={In the distribution of electrical energy, there is an electrical problem that harms the electricity supplier, namely the corona disturbance that occurs in the cubicle of the distribution substation. The phenomenon of corona disturbance is characterized by the presence of hissing sounds, ozone odors, and the release of electrons in the form of flashes of light on the surface of the conductor in the cubicle. The parameter data used in the study are data on the results of measuring temperature, humidity, and insulation resistance. The methods used in the study are quantitative and comparative methods.  In this study, we will discuss the magnitude of the value of the corona emergence voltage and the magnitude of the value of power losses and unsold energy, the condition of the decrease in the value of isolation resistance due to corona.  The results of the corona detection inspection before maintenance at the K57 substation showed a sound intensity value of 9 dB and at the T24B substation of 15 dB with an ultrasonic classification, namely PD which indicates the criteria for the occurrence of corona disturbances based on IEC 62478 standard.  The results of corona detection testing after maintenance at the K57 substation showed a sound intensity value of 3 dB and at the T24B substation of 4 dB with an ultrasonic classification, namely Noise which indicates no corona.  Prior to maintenance at the K57 substation, the value of power losses due to corona was obtained at 84.8675 kW and produced unsold energy of 57,030.96 kWh. At the T24B substation, the value of power losses due to corona was obtained at 129.9409 kW and produced unsold energy of 149,691.9168 kWh.  The amount of unsold energy value is proportional to the value of power losses caused by corona.}
		}