Ferroresonance suppression in power transformers using chaos theory

Radmanesh, Hamid; Gharehpetian, Gevork B.

doi:10.1016/j.ijepes.2012.08.028

Cited by 34 publications

(27 citation statements)

References 28 publications

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“…The simulation and experimental results of the suggested DRFFCL show its superior advantages over other limiting methods [15][16][17][18]. In these references, the effect of the saturated core FCL and metal oxide varistor on the control of ferroresonance overvoltage have been discussed.…”

Section: Experimental Studiesmentioning

confidence: 99%

“…Ferroresonance in the power systems has been widely studied and some solutions have been addressed to control these non-linear oscillations. Using damping resistor [15], circuit breaker (CB) accurate modelling [16], connecting metal-oxide varistor in parallel with the transformers terminals [17], accurate magnetic core modelling of transformers [18], using control theories to avoid the ferroresonance occurrence [19][20][21] and connecting power electronic equipments in series with the transmission lines [22] are some of the newly suggested schemes for controlling the ferroresonance phenomenon in the power systems. Though, the DC reactor-based fault current limiters have been widely studied to control the fault current amplitude [23][24][25][26], but the effect of the DC reactor on the ferroresonance phenomenon has not been studied yet.…”

Section: Introductionmentioning

confidence: 99%

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Dual function ferroresonance and fault current limiter based on DC reactor

Radmanesh¹,

Heidary

Fathi

et al. 2016

IET Generation, Transmission & Distribution

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This study presents a novel DC reactor-based ferroresonance and fault current limiter (DRFFCL) for stabilising ferroresonance oscillations of potential transformer (PT) in 33 kV distribution network and decreasing the amplitude of the fault current to an acceptable level. At first, the ferroresonance overvoltage is introduced and various types of overvoltage in the PT are studied. Then, the effects of the suggested DRFFCL on these oscillations are investigated. It is shown that the proposed DRFFCL not only can control the ferroresonance oscillations, but also can decrease the fault current amplitude in the case of short-circuit faults occurrence. The DRFFCL performance is simulated using MATLAB software and a scaled-down laboratory prototype is implemented and tested for the simulation results validation. The measured results are in agreement with the simulation results and clearly show the ability of the DRFFCL for controlling both the ferroresonance overvoltage and fault current.

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Section: Experimental Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual function ferroresonance and fault current limiter based on DC reactor

Radmanesh¹,

Heidary

Fathi

et al. 2016

IET Generation, Transmission & Distribution

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the past, it was believed that ferromagnetic resonance was the main cause of the blowing of the fuse of the voltage transformer, while it was not considered so after more research. Reasons fora fuse failing to blow are mainly related to the following points: (1) A saturation current is induced bya ferromagnetic resonance [3][4][5][6][7][8][9][10][11][12]. The long term VT current may cause the VT fuse to overheat and blow out to protect the distribution network system if the ferromagnetic resonance is not suppressed.…”

Section: Introductionmentioning

confidence: 99%

Impact Transient Characteristics and Selection Method of Voltage Transformer Fuse

Wang¹,

Liu²,

Yang

et al. 2019

Energies

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In a neutral ungrounded system, the high voltage fuses used to protect voltage transformers (VTs) often abnormally blow out, causing unbalanced VT operation. Fuses also fail to blow out in time, resulting in further damage to the VT. This paper reported the results of steady-state current testing, breaking characteristics, X-ray measurements, fuse corona testing, and electromagnetic transient impact testing for VT fuses. This paper comprehensively examines and analyzes the quality and electrical performance of VT fuses and provides new guidance for the use of high voltage fuses in voltage transformers. This paper recommends that 35 and 10 kV systems use fuses rated for a current of 1 A based on a single fuse, which is not easily oxidized and has a wound skeleton composed of an Ag or Ni melt.

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“…The resistance of a primary harmonic elimination device of 10 kV and below is above 60 kΩ, and the resistance value of 35 kV primary harmonic elimination device is above 150 kΩ. At present, many suppression measures [5][6][7][8][9][10][11][12] have been proposed based on the mechanism of ferromagnetic resonance [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

On-Line Detection of Voltage Transformer Insulation Defects Using the Low-Frequency Oscillation Amplitude and Duration of a Zero Sequence Voltage

Liu¹,

Wang²,

Yang

et al. 2019

Energies

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The insulation degradation of a voltage transformer winding is not easy to find, but it may ultimately cause the transformer to explode, leading to accidents such as phase-to-phase short circuits. At present, power transformers, lightning arresters, and other equipment have on-line methods to detect the insulation state. However, there is no mature method for the on-line monitoring of voltage transformer winding insulation. In this study, a small current disturbance method based on a zero-sequence loop is proposed. The characteristic parameters of the low-frequency oscillation of zero-sequence voltage after a disturbance are used to evaluate the insulation state of the winding and detect faults. Theoretical modeling, simulation tests, and field tests show that when the insulation resistance of the voltage transformer winding is in the range 0–40 kΩ, a low frequency oscillation of about 10 Hz can be detected on the zero-sequence voltage, and its amplitude and duration are proportional to the degree of damage to the insulation. This can hence be used as a criterion for the on-line detection of voltage transformer winding insulation defects.

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Ferroresonance suppression in power transformers using chaos theory

Cited by 34 publications

References 28 publications

Dual function ferroresonance and fault current limiter based on DC reactor

Dual function ferroresonance and fault current limiter based on DC reactor

Impact Transient Characteristics and Selection Method of Voltage Transformer Fuse

On-Line Detection of Voltage Transformer Insulation Defects Using the Low-Frequency Oscillation Amplitude and Duration of a Zero Sequence Voltage

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