Protection Coordination for Assembly HVDC Breakers for HVDC Multiterminal Grids Using Wavelet Transform

Mitra, Bhaskar; Chowdhury, Badrul; Willis, Andrew

doi:10.1109/jsyst.2019.2922645

Cited by 27 publications

(15 citation statements)

References 31 publications

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“…Therefore, the sampling frequency of 4 kHz is chosen. However, it is worth mentioning that over‐sampling has the advantage of the significant reduction in the noise energy spreading over a wider frequency range [39].…”

Section: Sensitivity Analysismentioning

confidence: 99%

Single‐end protection algorithm for HVDC transmission lines based on the current difference

Mehrabi‐Kooshki

Mirhosseini

Jamali

2020

IET Generation, Transmission & Distribution

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Section: Sensitivity Analysismentioning

confidence: 99%

Single‐end protection algorithm for HVDC transmission lines based on the current difference

Mehrabi‐Kooshki

Mirhosseini

Jamali

2020

IET Generation, Transmission & Distribution

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“…Current approaches mostly discuss the use of time-domain based fault-location algorithms [9], [10]. The high frequency fault transients contain information about the fault and its characteristics [11]. Traveling wave based methods have gained prominence due to the presence of time synchronized Global Positioning System (GPS) devices.…”

Section: Introductionmentioning

confidence: 99%

“…The surge propagation of the waves are dependent on the line parameters, controlling the accuracy of the results [15]. Modern methods also involve the use of digital signal processing methods requiring high sampling frequency to achieve the desired accuracy [11]. Simultaneous time-frequency based methods like wavelet transform has been widely used for fault location.…”

Section: Introductionmentioning

confidence: 99%

“…CWT tends to provide better resolution as compared to DWT. CWT involves a smooth shift of the mother wavelet over the time-domain, whereas in DWT, the mother wavelet is shifted using a dyadic pattern over time [11], [16]. Active fault location detection techniques using external injection of voltages using a power probe unit (PPU) has been suggested in [17] or as a pre-charged capacitor connected to a circuit breaker [18].…”

Section: Introductionmentioning

confidence: 99%

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Fault Location Using the Natural Frequency of Oscillation of Current Discharge in MTdc Networks

2021

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This paper discusses a novel offline-fault location approach using single ended measurements. The natural dissipation of the circuit parameters are considered for fault location. A relationship between the damped natural frequency of oscillation of the transmission line current and fault location is established. The hybrid dc circuit breaker (dcCB) interrupts the fault current, whereby the transmission line current attenuates under the absence of any driving voltage source. The line capacitance discharges into the fault at a specific frequency of oscillation and rate of attenuation. Utilizing this information, the fault location in a multi-terminal direct current (MTdc) network can be obtained. A three terminal radial model of a MTdc is used for performance evaluation of the proposed method using Power System Computer Aided Design (PSCAD)/Electromagnetic Transients including dc (EMTdc).

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“…Any topology that outperforms it would be either a non‐linear or time‐varying system. Further, with the recent advancements in high voltage direct current (HVDC) breakers [2, 3], the MMC has become much more competent. MMCs can be applied in several areas, including HVDC, medium voltage drives, flexible AC transmission systems, D‐STATCOM, and solar and wind energy.…”

Section: Introductionmentioning

confidence: 99%

Design of internal dynamics based MMC controller for HVDC transmission

Yadav

Singh

Das

2020

Energy Conversion and Economics

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Currently, the modular multilevel converter (MMC) is the most advanced voltage source converter topology. Because the MMC is a converter topology, the most common approach for controller design is considering the conventional converter model to design the controller accordingly. Though this approach ignores the internal dynamics of the MMC, the modular structure enables distribution of the capacitors in six arms of the MMC. However, this distribution leads to a complex internal dynamic that affects the controller operation and cannot be disregarded. In this study, a detailed fundamental and circulating current model of the MMC is developed while considering its internal dynamics. The detailed modelling reveals cross-and inter-couplings. On the basis of the detailed model and analysis of the couplings, three controllers have been proposed. Moreover, the performances of the proposed and conventional controllers have been analysed and compared under steady-state and active and reactive power changes. The proposed controllers are observed to achieve improved decoupling compared to that achieved by the conventional controller.

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Protection Coordination for Assembly HVDC Breakers for HVDC Multiterminal Grids Using Wavelet Transform

Cited by 27 publications

References 31 publications

Single‐end protection algorithm for HVDC transmission lines based on the current difference

Single‐end protection algorithm for HVDC transmission lines based on the current difference

Fault Location Using the Natural Frequency of Oscillation of Current Discharge in MTdc Networks

Design of internal dynamics based MMC controller for HVDC transmission

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