Case study of ferroresonance in 33 kV distribution network of PEA Thailand

Laohacharoensombat, K.; Tuitemwong, K.; Jaruwattanadilok, S.; Wattanasakpubal, C.; Kleebmek, K.

doi:10.1109/tencon.2004.1414796

Cited by 11 publications

(4 citation statements)

References 1 publication

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“…Toward the end of the 20th century, the study area has branched into four main directions: 1) practical system level case studies [6], [25], [26]; 2) ferroresonance identification methods [27], [28]; 3) development of ferroresonance mitigation approaches [29]- [33]; and most prominently, 4) the improvement of analytical techniques and the modeling of electromagnetic transients in transformers, which is the main contribution of this paper.…”

Section: B Historical Review Of Ferroresonance Researchmentioning

confidence: 99%

Impacts of Hysteresis and Magnetic Couplings on the Stability Domain of Ferroresonance in Asymmetric Three-Phase Three-Leg Transformers

Moses

Masoum

Toliyat

2011

IEEE Trans. Energy Convers.

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This paper investigates the stability domain of ferroresonance in asymmetric three-phase three-leg transformers considering magnetic couplings and hysteresis effects of the core. A newly developed and accurate time-domain transformer model capable of simulating dynamic and transient operating conditions is implemented in this study. The model is based on electromagnetic circuit theory and considers dynamic hysteresis effects (major and minor loops) as well as core topology, asymmetry, and magnetic flux cross-coupling interactions of the core legs. Unbalanced switching with series and shunt capacitances, which is known to increase the risk of ferroresonance, is studied with the developed model. The validity of the model under ferroresonant conditions is confirmed by comparisons with extensive experimental data. The main contribution is a new analysis of (a)symmetric three-phase transformer ferroresonance behavior with an accurate core model capable of predicting ferroresonance modes.Index Terms-Ferroresonance, hysteresis, nonlinear and threephase transformer model.

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Section: B Historical Review Of Ferroresonance Researchmentioning

confidence: 99%

Impacts of Hysteresis and Magnetic Couplings on the Stability Domain of Ferroresonance in Asymmetric Three-Phase Three-Leg Transformers

Moses

Masoum

Toliyat

2011

IEEE Trans. Energy Convers.

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Section: Introductionmentioning

confidence: 99%

“…The abrupt transition is triggered by a disturbance, switching action and a change in values of a parameter. Ferroresonance creates overvoltages and over currents in power system which not only causes damages to power transformer but also causes damages to network instruments such as surge arresters [9][10][11][12][13].Unlike resonance (which occurs in RLC circuits by linear capacitances and inductances for a particular frequency), ferroresonance is caused by nonlinear inductance. Magnetic core of power transformer can be consider as a nonlinear inductance along with line to ground capacitances.…”

mentioning

confidence: 99%

Elimination of chaotic ferroresonance in power transformer by ISFCL

Fordoei

Heydari

Afsari

2015

International Journal of Electrical Power & Energy Systems

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“…• [15] reported that the ferroresonance phenomena occurring on 33 kV Provincial Electricity Authority distribution network in Satun province.…”

Section: Type Of Ferroresonance Modementioning

confidence: 99%

Simulation studies in ferroresonant phenomena on distribution transformers

Phomvongsy

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Ferroresonance phenomena often appear in any typical distribution systems consisting of drop-out fuse cutouts, overhead lines or power cables and a distribution transformer. Single-pole energization and fuse operation may lead to ferroresonance overvoltages, resulting in electrical equipment damage. The occurrence of ferroresonance depends on several factors including size and length of line, power rating and type of distribution transformer. This thesis presents two case studies involving ferroresonance phenomena. The first case studies the lengths of overhead lines and underground cables which create enough capacitive reactance for ferroresonance. The critical lengths are estimated by hand calculation and computer simulation. The obtained results show that the system with underground cables has much lower critical length in comparison with that of overhead lines. The critical length decreases with increasing conductor size and decreasing power rating of transformer. The second case studies the effect of low-loss transformer in comparison with the conventional one. It is found that using the low-loss transformer has more chance to face ferroresonane phenomena.

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Case study of ferroresonance in 33 kV distribution network of PEA Thailand

Cited by 11 publications

References 1 publication

Impacts of Hysteresis and Magnetic Couplings on the Stability Domain of Ferroresonance in Asymmetric Three-Phase Three-Leg Transformers

Impacts of Hysteresis and Magnetic Couplings on the Stability Domain of Ferroresonance in Asymmetric Three-Phase Three-Leg Transformers

Elimination of chaotic ferroresonance in power transformer by ISFCL

Simulation studies in ferroresonant phenomena on distribution transformers

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