Solid‐state transient limiter for capacitor bank switching transients

Ghanbari, Teymoor; Farjah, Ebrahim; Zandnia, Amir

doi:10.1049/iet-gtd.2012.0495

Cited by 11 publications

(10 citation statements)

References 14 publications

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“…Therefore, only the methods that have a similar application, complexity and cost are considered here, and their performance is compared to the proposed SSICL. These methods include the proposed SSICL, resistor‐relay set, as well as methods proposed in [10, 35, 38]. All the systems are simulated using the parameters given in Table 2.…”

Section: Performance Comparisonsmentioning

confidence: 99%

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Start‐up circuit for an electric vehicle fast charger using SSICL technique and a slow estimator

Tashakor

Arabsalmanabadi

Ghanbari

et al. 2020

IET Generation, Transmission & Distribution

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Section: Performance Comparisonsmentioning

confidence: 99%

“…Approaches based on synchronised switching are well‐known methods for mitigating the inrush current in AC capacitor banks and transformers [23, 35–38]. In synchronous switching, the voltage magnitude and phase angle are measured, and the switching instance is selected in order to minimise the switching transients.…”

Section: Introductionmentioning

confidence: 99%

Start‐up circuit for an electric vehicle fast charger using SSICL technique and a slow estimator

Tashakor

Arabsalmanabadi

Ghanbari

et al. 2020

IET Generation, Transmission & Distribution

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“…Energization of power system components is accompanied by a switching transient, and the energization transients of components such as transformers, shunt capacitor banks, and conventional shunt reactors have been well documented. However, owing to their special body structures, MCSR energization transients are more complicated than those of conventional shunt reactors and transformers, and there has not been much research so far on the energization of MCSRs …”

Section: Introductionmentioning

confidence: 99%

Modeling and impacts analysis of energization transient of EHV/UHV magnetically controlled shunt reactor

Zheng

Huang

Zhang

et al. 2017

Int. Trans. Electr. Energ. Syst.

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To address the problems of overvoltage, harmonic distortion, and mal-operation that can occur in protection systems as a result of direct energization in magnetically controlled shunt reactors (MCSRs), this paper proposes a novel approach for MCSR energization-namely, pre-excited energization. Using the structure and operating principles of an MCSR, a detailed derivation of energization transient mathematical model for both direct and pre-excited energization are presented and the model-specific impacts of the 2 different energization modes are investigated. To validate the theoretical analysis, we performed physical model tests and simulations of different energization modes. The results indicate that pre-excited energization is capable of suppressing overvoltage on the DC link bus and alleviating harmonics caused by direct energization. KEYWORDS energization, impacts analysis, magnetically controlled shunt reactor (MCSR), mathematical model, transient characteristics 1 | INTRODUCTIONControllable shunt reactors placed on line terminals or substation bus bars play an important role in extra high-/ultra high-voltage (EHV/UHV) transmission networks of voltage control and reactive power compensation. 1-3 With the advantages of continuously adjustable capacity, 4 low harmonics, 5 and excellent steady-state control characteristics, 6 magnetically controlled shunt reactors (MCSRs) are preferable for reactive power compensation in EHV/UHV power systems. Energization of power system components is accompanied by a switching transient, 7,8 and the energization transients of components such as transformers, 9-11 shunt capacitor banks, 12-14 and conventional shunt reactors 15 have been well documented. However, owing to their special body structures, MCSR energization transients are more complicated than those of conventional shunt reactors and transformers, and there has not been much research so far on the energization of MCSRs. 16 The simplest energization strategy for MCSRs at present is direct energization, in which the DC excitation system is blocked. As with transformer energization, one of the main problems associated with the MCSR direct energization transient is the occurrence of inrush current with a large number Symbols: _ U m , System bus voltage where MCSR is equipped; α, Phase angle of the system bus voltage at the instant of energization; U k , DC excitation source voltage; i 1 , Current of the grid-side winding; i k , Current of the control winding in the single phase MCSR; R 1 , Resistance of the grid-side winding; R k , Resistance of the control winding; R w , Balance resistor; N 1 , Number of turns in the grid-side winding; N 2 , Number of turns in the control winding; N 3 , Number of turns in the compensation winding; A, Area of the iron limb; l, Magnetic path length of the iron limb; i kA , Current of phase A in the control windings; i kB , Current of phase B in the control windings; i kC , Current of phase C in the control windings; i t , Total current of control windings; I dc , DC excitation current;...

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“…However, in contrast to other similar structures, it requires twice the number of limiting reactors, which increases the overall system cost. In the recently developed approaches [13–16], a DC‐reactor has been utilised to mitigate the capacitor switching transients. In [13–15], single‐phase DC‐reactor type capacitor transient limiters are studied.…”

Section: Introductionmentioning

confidence: 99%

“…In the recently developed approaches [13–16], a DC‐reactor has been utilised to mitigate the capacitor switching transients. In [13–15], single‐phase DC‐reactor type capacitor transient limiters are studied. These single‐phase devices must be separately installed in different phases, which in turn lead to increase in the number of the electric components and lower reliability of the system.…”

Section: Introductionmentioning

confidence: 99%

Three‐phase resistive capacitor switching transient limiter for mitigating power capacitor switching transients

Ghanbari

Farjah

Naseri

2016

IET Generation, Transmission & Distribution

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Solid‐state transient limiter for capacitor bank switching transients

Cited by 11 publications

References 14 publications

Start‐up circuit for an electric vehicle fast charger using SSICL technique and a slow estimator

Start‐up circuit for an electric vehicle fast charger using SSICL technique and a slow estimator

Modeling and impacts analysis of energization transient of EHV/UHV magnetically controlled shunt reactor

Three‐phase resistive capacitor switching transient limiter for mitigating power capacitor switching transients

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