Searched for: subject%3A%22HVDC%255C+grid%22
(1 - 10 of 10)
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Yazdi, Seyed Saeid Heidari (author), Rouzbehi, Kumars (author), Carrizosa, Miguel Jimenez (author), Heidary, Amir (author), Bagheri, Mehdi (author)
Future high-voltage direct-current (HVDC) networks based on voltage source converters (VSCs) will have different structures (asymmetric monopolar, bipolar, or symmetric monopolar), voltage levels, control, and protection schemes. Therefore, dc-dc converters are needed to interconnect those VSC-HVDC grids and several technical issues on their...
journal article 2023
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Xie, F. (author), Hao, Zhiguo (author), Ye, Dongmeng (author), Yang, Songhao (author), Li, Chuanxi (author), Dai, Guoan (author), Zhang, Baohui (author), Wang, Ting (author)
The existing protection techniques for high-voltage direct-current (HVDC) grids suffer from several shortcomings such as high sampling frequency, poor robustness, and reliance on simulation for threshold setting. To solve these problems, this paper proposes a non-unit protection method for modular multilevel converter (MMC)-based HVDC grids...
journal article 2023
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Shetgaonkar, A.D. (author), Popov, M. (author), Palensky, P. (author), Lekić, A. (author)
In a multi-terminal direct current (MTdc) system based on a modular multilevel converter (MMC), high-speed and large interruption capability direct current circuit breakers (dc CBs) are required for dc fault interruption. However, commercializing these breakers is challenging, especially offshore, due to the large footprint of the surge...
journal article 2023
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Liu, L. (author), Lekić, A. (author), Popov, M. (author)
Due to its excellent performance, VSC-based high voltage direct current (HVDC) power systems draw significant attention. They are being heavily used in modern industrial applications, such as onshore and offshore wind farms, and for interconnection between asynchronous networks. However, the traditional proportional-integral (PI) control...
conference paper 2022
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Roose, Thomas (author), Lekić, A. (author), Alam, Mohammad Meraj (author), Beerten, Jef (author)
This paper analyzes high-frequency interactions between a Modular Multilevel Converter (MMC) and High Voltage Direct Current (HVDC) grid resonances by studying their effect on the system stability. The recent appearance of converter-related instabilities due to high-frequency oscillations at the converter's ac side raises concerns about whether...
journal article 2020
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Liu, S. (author), Popov, M. (author), Mirhosseini, S.S. (author), Nee, Simon (author), Modeer, Tomas (author), Ängquist, Lennart (author), Belda, Nadew (author), Koreman, Kees (author), van der Meijden, M.A.M.M. (author)
This paper deals with the modeling, hardware results and model validation by measurements of a VSC assisted resonant current (VARC) dc circuit breaker (CB) and the application within a future network by simulation. The newly emerging VARC dc CB can be used as a solution for the protection of offshore multi-terminal HVDC (MTDC) grids. In this...
journal article 2020
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Liu, S. (author), Liu, Z. (author), de Jesus Chavez, Jose (author), Popov, M. (author)
The main goal of the paper is the modeling of the mechanical circuit breaker (MCB) that can replicate the breaker characteristics in real time environment. The proposed MCB with active current injection is modelled for a system level, which provides adequate representation of the circuit breakers for system analysis studies. External current...
journal article 2019
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Chen, Qinghan (author)
TenneT’s vision of the North Sea Infrastructure (NSI) creates a basis for a joint European approach up to 2050 which focuses specifically on developing the North Sea as a source and distribution hub for Europe’s energy transition. High wind speed, central location and shallow water qualify the Dogger Bank as the location of the central hub.<br/...
master thesis 2018
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Liu, S. (author), Popov, M. (author)
The main goal of the paper is the modelling of the mechanical direct current circuit breaker (DC CB) with active current injection that includes different circuit breaker characteristics. System level models provide adequate representation of the circuit breakers for system analysis studies. The performance characteristics of the DC CB in...
journal article 2018
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Azari, D. (author)
master thesis 2013
Searched for: subject%3A%22HVDC%255C+grid%22
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