Mitigating potential transformer ferroresonance in a 230 kV converter station

Jacobson, David; Swatek, D.R.; Mazur, RG

doi:10.1109/tdc.1996.545946

Cited by 35 publications

(36 citation statements)

References 8 publications

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“…Ferroresonance is a general term applied to a wide variety of interactions between capacitors and iron-core inductors that result in unusual voltages and/or currents [1][2][3][4][5]. In linear circuits, resonance occurs when the capacitive reactance equals the inductive reactance at the frequency at which the circuit is driven.…”

Section: Overview Of Ferroresonancementioning

confidence: 99%

“…One of the most serious problems in electrical power systems is the possibility of over-voltages resulting from a ferroresonant condition [1][2][3][4][5][6]. Ferroresonance is a mysterious phenomenon that seems to occur capriciously, causing much concern among utility operating personnel.…”

Section: Introductionmentioning

confidence: 99%

“…They found they had to be more careful about how they switched the cable and how they arranged switch points to minimize the amount of cable isolated with lightly loaded transformers during switching. Ferroresonance is a greater problem at the higher voltage levels [3,4,6] because the relative ratios of losses, magnetizing impedance and cable capacitance fall into its more favorable range. This phenomena has been extensively studied by many investigators since was first reported in 1930's.…”

Section: Introductionmentioning

confidence: 99%

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Ferroresonance Phenomenon in Power Transformers - Experimental Assessment

Abdallah¹,

El‐Kady²

2005

eng

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ABSTRACT. This paper reports on the results of recent research and development efforts to study and assess various impacts of ferroresonance phenomenon on operating performance of power transformers and to investigate ways to mitigate the effects of such phenomenon. Three-phase core-type transformers are used in the study. The results of the technical investigation and the associated ferroresonance experimental work performed showed that ferroresonance can cause dangerous overvoltages and overcurrents in three-phase coretype transformers. Sensitivity analysis results are also presented to determine the impact of various design and operating parameters on the resulting overvoltages and overcurrents caused by ferroresonance.

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Section: Overview Of Ferroresonancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ferroresonance Phenomenon in Power Transformers - Experimental Assessment

Abdallah¹,

El‐Kady²

2005

eng

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“…In the studies, in the related literature, the ferroresonance is defined as a general term applied to a wide variety of interactions between capacitors and iron-core inductors that result in unusual voltages and/or currents (ABDALLAH; EL-KADY, 2005;BUIGUES et al, 2007;CHARALAMBOUS et al, 2007;IRAVANI, 2000;JACOBSON et al, 1999;MENZIES, 2001;KUMAR et al, 2006;SAIED et al, 1984;SAKARUNG, 2005;STOJKOVSA et al, 2001;TANGGAWELU et al, 2003). P. Boucherot used this term for the first time in 1920 in the appellation of oscillations in circuits with nonlinear inductance and capacitance (SUTHERLAND;MANNING, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…As a result, these high over-voltages cause failures in transformers, cables, and arresters of the power system (ABDALLAH; EL-KADY, 2005; Acta Scientiarum. Technology Maringá, v. 33, n. 3, p. 273-279, 2011 BUIGUES et al, 2007;CHARALAMBOUS et al, 2007;IRAVANI, 2000;JACOBSON et al, 1999;MENZIES, 2001;KUMAR et al, 2006;SAIED et al, 1984;SAKARUNG, 2005;STOJKOVSA et al, 2001;SUTHERLAND, MANNING, 2006;TANGGAWELU et al, 2003). Also, in terms of the frequency components, the abnormal rates of harmonics can often be dangerous for most electrical equipment in the power systems.…”

Section: Introductionmentioning

confidence: 99%

Detection of ferroresonance phenomenon for the west anatolian electric power network in Turkey

Akıncı

Ekren

2011

Acta Sci. Technol.

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ABSTRACT.Ferroresonance is an electrical phenomenon in nonlinear character, which frequently occurs in power systems containing saturable transformers and single or morephase switching on the lines for the disjunction of the loads. In this study, the ferroresonance phenomena are considered under the modeling of the West Anatolian Electric Power Network of 380 kV in Turkey. The ferroresonance event is carried out using the switching to remove the loads at the end of the lines. In this sense, two different cases are considered. Firstly, the switching is applied at the 2nd second and the ferroresonance effects are observed between the 2nd and the 4th second of the voltage variations. As a result, the ferroresonance and non-ferroresonance cases observed before the ferroresonance, are compared with each other using the Fourier transform techniques. Hence, the properties of the ferroresonance event, which are defined between the 100 and 200 Hz, are presented in the frequency domain.Keywords: ferroresonance, west anatolian electric power system, power system modeling, spectral analysis, feature extraction.RESUMO. Detecção de fenômeno ferroresonância para rede de energia elétrica anatólia do oeste na Turquia. Ferroresonancia é um fenômeno elétrico em caráter não-linear, o que freqüentemente ocorre em sistemas de potência contendo transformadores saturável, e mudar uma ou mais fases nas linhas de separação das cargas. Neste estudo, os fenômenos de ferroresonancia são considerados sob a modelagem da Anatólia do Oeste Rede de Energia Elétrica de 380 kV, na Turquia. O ferroresonancia ocorre utilizando a mudança para remover as cargas, no final das linhas. Nesse sentido, dois casos são considerados diferentes. Em primeiro lugar, a mudança é aplicada em 2 segundos e os efeitos de ferroresonancia são observados entre segundos 2 e 4. Como resultado, o ferroresonance e casos ferroresonancia não observado antes da ferroresonancia são comparados uns com os outros usando a transformada de Fourier técnicas. Assim, as propriedades da ferroresonancia, que são definidas entre os 100 e 200 Hz, são apresentadas no domínio da freqüência.Palavras-chave: ferroresonancia, sistema de energia elétrica da Anatólia do Oeste, modelagem de sistemas de energia, análise espectral, extração de característica.

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Investigation of possible ferroresonance for a voltage range: realisation of a system event with a laboratory set‐up

Miličević

Emin

2011

Circuit Theory & Apps

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SUMMARYThe paper presents an analytical and numerical investigation carried out on part of an electrical power network exhibiting ferroresonant behaviour as well as experimental investigation on its physical model. The investigations were carried out in order to estimate the extent of predicting the range of voltage source amplitude values at which the initiation of ferroresonance depends on values of initial conditions and phase shift. For this range of voltage source amplitude values (termed as possible ferroresonant range in the paper), the impact of initial conditions and phase shift of voltage source on the initiation of ferroresonance is determined using a numerical investigation and an experimental set-up. Reasons and consequences of disagreement of parameter values of the original and physical model are determined.

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Mitigating potential transformer ferroresonance in a 230 kV converter station

Cited by 35 publications

References 8 publications

Ferroresonance Phenomenon in Power Transformers - Experimental Assessment

Ferroresonance Phenomenon in Power Transformers - Experimental Assessment

Detection of ferroresonance phenomenon for the west anatolian electric power network in Turkey

Investigation of possible ferroresonance for a voltage range: realisation of a system event with a laboratory set‐up

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