Thermal aging of power distribution transformers operating under nonlinear and balanced load conditions

E Cazacu, V Ionita, L Petrescu - Advances in Electrical and …, 2018 - advances.vsb.cz
The flow of harmonic current encountered in nowadays electrical installations causes
numerous undesirable issues to the power grid. The most detrimental consequence is the …

A NEW HYBRID MODEL TO EVALUATE THE LOSS OF LIFE OF POWER TRANSFORMERS

B LEU, G SERIȚAN, B ENACHE - REVUE ROUMAINE DES …, 2023 - journal.iem.pub.ro
Following the thermal model for assessing the degradation of transformer units, as
advocated by IEEE and IEC standards, existing literature posits that the transformers do not …

[PDF][PDF] Study of ferroresonance favorable cases in electric substations

S Boutora, H Bentarzi - Rev. Roum. Sci. Techn.–Électrotechn. et …, 2018 - revue.elth.pub.ro
Ferroresonance is a phenomenon of complex nature which may be studied profoundly for
avoiding it and protect the power equipment with appropriate protective devices when it …

[PDF][PDF] A Novel De-rating Practice for Distributed Photovoltaic Power (DPVP) Generation Transformers

BA Thango, JA Jordaan, AF Nnachi - academia.edu
Transformers are habitually designed and manufactured for operation at a fundamental
frequency of 50Hz and sinusoidal load current. Transformers are susceptible to non-linear …

EVALUATION OF THERMAL REQUIREMENTS AND LIFE OF DISTRIBUTION TRANSFORMERS IN REGIME NON-SINUSOIDAL PERIODIC: n/a

E CAZACU, LM DUMITRAN… - … ŞI PERSPECTIVE ÎN …, 2020 - journal.iem.pub.ro
Electric transformers are some of the most important equipment in the entire electricity
distribution chain. Their operation with optimal values​​ of the parameters (electrical …

[PDF][PDF] EFFECT OF CURRENT HARMONICS ON THE HYSTERESIS LOSSES IN SOFT MAGNETIC MATERIALS

V IONIŢĂ, L PETRESCU, E CAZACU - revue.elth.pub.ro
The paper presents an efficient numerical procedure, which estimates the hysteresis losses
in the FeSi materials, for periodic nonsinusoidal magnetic field having the harmonic …

[PDF][PDF] EVALUAREA SOLICITĂRILOR TERMICE ȘI A DURATEI DE VIAȚĂ A TRANSFORMATOARELOR DE DISTRIBUȚIE AFLATE ÎN REGIM PERIODIC …

Transformatoarele electrice reprezintă unele dintre cele mai importante echipamente din tot
lanțul de distribuție a energiei electrice. Funcționarea acestora cu valori optime ale …