Evaluation of controlled energization of shunt reactors for minimizing asymmetric DC component of charging current with circuit breaker having pre-insertion resistors

Bhatt, Kunal A.; Bhalja, Bhavesh R.; Parikh, Urmil

doi:10.1016/j.ijepes.2017.06.009

Cited by 12 publications

(7 citation statements)

References 12 publications

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“…The PIR-CB contains two switches (namely interrupter and PIR switch) with PIR per phase. The details of various configurations of PIR, their behaviours, and the advantages of different configurations are reported in literatures [24,25]. In practise, the hybrid combination of PIR-CB with controlled switching device can be implemented without any additional efforts.…”

Section: Effect Of Pir-cb During Energisation Of An Unloaded Power Trmentioning

confidence: 99%

“…Therefore, the electrical insertion time (EIT) and MIT of PIR-CB are also different from each other. It is to be noted that the time laps between the electrical closing of interrupter and PIR switch are known as EIT, whereas the time laps between the mechanical closing of an interrupter and PIR switch is defined as MIT [23][24][25].…”

Section: Effect Of Pir-cb During Energisation Of An Unloaded Power Trmentioning

confidence: 99%

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Evaluation of controlled energisation of an unloaded power transformer for minimising the level of inrush current and transient voltage distortion using PIR‐CBs

Bhatt

Bhalja

Parikh³

2018

IET Generation, Transmission & Distribution

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Section: Effect Of Pir-cb During Energisation Of An Unloaded Power Trmentioning

confidence: 99%

Section: Effect Of Pir-cb During Energisation Of An Unloaded Power Trmentioning

confidence: 99%

Evaluation of controlled energisation of an unloaded power transformer for minimising the level of inrush current and transient voltage distortion using PIR‐CBs

Bhatt

Bhalja

Parikh³

2018

IET Generation, Transmission & Distribution

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“…This meticulous orchestration ensures that transient effects are minimized, safeguarding the integrity and stability of the system. [6,7]. When the converter side breaker is closed, the current drawn from the secondary side of converter transformer is very high, due to the charging of the capacitors of the SMs of the FB-MMC.…”

Section: Introductionmentioning

confidence: 99%

A Novel Integrated Switching Strategy for Reliable Starting of Two Terminal MMC HVDC Transmission System

Mohammedirfan I Siddiqui

2024

jes

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If the initialization protocol of the Modular Multilevel Converter (MMC) system is not adhered to, the primary winding of the system transformer will experience a surge in inrush current, while the secondary winding on the converter side will exhibit significant starting current draw to charge the capacitors of the MMC-H-bridge. This pronounced initial current surge can trigger the activation of protective measures, leading to the disconnection of the High Voltage Direct Current (HVDC) line and thereby engendering power system reliability and stability concerns. This paper presents a starting methodology for a two-terminal MMC HVDC system. The proposed approach entails employing controlled switching techniques to mitigate inrush currents in the HVDC converter transformer, coupled with the utilization of pre-insertion resistance circuit breakers to diminish starting currents on the converter side. The efficacy of the aforementioned strategy is validated through simulations conducted on a two-terminal MMC HVDC system modeled using PSCAD/EMTDC, with the results confirming its effectiveness.

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“…They also investigated the coupling relationship between several key factors affecting switching transients; closing target angle, resistor insertion time, and resistor size are all key factors in switching transients for both single-group and back-to-back switches. Bhatt et al [20] minimize the level of asymmetric DC component of charging current during energization of a shunt reactor using a Controlled Switching Device (CSD) with a PIR-Circuit Breaker, by optimizing the insertion instant, value, and Electrical Insertion Time of PIR. Eliyan et al [21] used the PIR of a conventional circuit breaker with three other link technologies to reduce operational overvoltage in wind farms.…”

Section: Introductionmentioning

confidence: 99%

“…Bhatt et al. [20] minimize the level of asymmetric DC component of charging current during energization of a shunt reactor using a Controlled Switching Device (CSD) with a PIR‐Circuit Breaker, by optimizing the insertion instant, value, and Electrical Insertion Time of PIR. Eliyan et al.…”

Section: Introductionmentioning

confidence: 99%

Pre‐insertion resistors temperature prediction based on improved WOA‐SVR

Dai,

Mo,

Wang

et al. 2024

IET Science Measure & Tech

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The pre‐insertion resistors (PIR) within high‐voltage circuit breakers are critical components and warm up by generating Joule heat when an electric current flows through them. Elevated temperature can lead to temporary closure failure and, in severe cases, the rupture of PIR. To accurately predict the temperature of PIR, this study combines finite element simulation techniques with Support Vector Regression (SVR) optimized by an Improved Whale Optimization Algorithm (IWOA) approach. The IWOA includes Tent mapping, a convergence factor based on the sigmoid function, and the Ornstein–Uhlenbeck variation strategy. The IWOA‐SVR model is compared with the SSA‐SVR and WOA‐SVR. The results reveal that the prediction accuracies of the IWOA‐SVR model were 90.2% and 81.5% (above 100°C) in the ± 3°C temperature deviation range and 96.3% and 93.4% (above 100°C) in the ± 4°C temperature deviation range, surpassing the performance of the comparative models. This research demonstrates that the method proposed can realize the online monitoring of the temperature of the PIR, which can effectively prevent thermal faults PIR and provide a basis for the opening and closing of the circuit breaker within a short period.

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Evaluation of controlled energization of shunt reactors for minimizing asymmetric DC component of charging current with circuit breaker having pre-insertion resistors

Cited by 12 publications

References 12 publications

Evaluation of controlled energisation of an unloaded power transformer for minimising the level of inrush current and transient voltage distortion using PIR‐CBs

Evaluation of controlled energisation of an unloaded power transformer for minimising the level of inrush current and transient voltage distortion using PIR‐CBs

A Novel Integrated Switching Strategy for Reliable Starting of Two Terminal MMC HVDC Transmission System

Pre‐insertion resistors temperature prediction based on improved WOA‐SVR

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