Monitoring of transient overvoltages on the power transformers and shunt reactors – field experience in the Croatian power transmission system (CROSBI ID 647612)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Filipović-Grčić, Božidar ; Franc, Bojan ; Uglešić, Ivo ; Pavić, Ivica ; Keitoue Samir ; Murat, Ivan ; Ivanković, Igor
engleski
Monitoring of transient overvoltages on the power transformers and shunt reactors – field experience in the Croatian power transmission system
Power transformers and shunt reactors may be subjected to various dielectric stresses such as lightning and switching overvoltages. Since the exposure of equipment to overvoltages during operation and the overvoltage amplitudes are usually unknow, an on-line overvoltage transient recorder is used with the ability to sample, analyze and store transients at transformer terminals in real-time. In this paper, transient overvoltage monitoring system is presented. Overvoltages are measured on the outside measurement terminal of the shunt reactor and transformer bushing. Field experience regarding the application of monitoring system in Croatia is described including different cases of lightning and switching overvoltages. Lightning overvoltages recorded by monitoring system are correlated with data from the lightning location system (LLS). Switching overvoltages recorded on the shunt reactor are compared with numerical simulations in EMTP-RV software. Collected data about overvoltage stresses can be used as the basis for the assessment of the transformer and shunt reactor insulation condition and estimation of health index.
Transient overvoltage monitoring system ; lightning location system ; lightning and switching overvoltages ; power transformers ; shunt reactors ; EMTP-RV
Paper TLM-05
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
1-15.
2017.
objavljeno
Podaci o matičnoj publikaciji
4th International Colloquium "Transformer Research and Asset Management", Pula, Croatia, May 10 – 12, 2017
Zagreb: CIGRÉ
Podaci o skupu
4th International Colloquium "Transformer Research and Asset Management"
predavanje
10.05.2017-12.05.2017
Pula, Hrvatska