Results 31 to 40 of about 377 (161)
Generalized short circuit ratio for multi-infeed LCC-HVDC systems
2017 IEEE Power & Energy Society General Meeting, 2017 The relationship between the short circuit ratio (SCR) and static voltage stability is analyzed in this paper. According to eigenvalue decomposition method, a novel concept named generalized short circuit ratio (gSCR) has been proposed for multi-infeed LCC-HVDC (MIDC) systems to mathematically measure the connect-ed AC strength from the point view of ...
Feng Zhang 0001 +6 more
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Energy Reports, 2023 The restoration of the modern alternating current-direct current (AC–DC) hybrid power grid after a blackout is difficult and complex. By using the partitioning restoration strategy and the support of high voltage direct current (HVDC) system, the ...
Chao Yang +4 more
doaj +1 more source
Study on the Influence of Inconsistent Valve Parameters on LCC-HVDC Commutation and Operation [PDF]
IEEE Access, 2019 Line commutated converter high voltage direct current (LCC-HVDC) transmission has unique advantages and plays an irreplaceable role in the power system. It is of great significance to study the commutation process. The traditional ideal model of commutation process neglects many valve parameters.
Yanyong Yang, Pinjia Zhang
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International Journal of Electrical Power & Energy SystemsThe rapid deployment of both line-commutated converter-based high-voltage direct current (LCC-HVDC) and voltage source converter-based high-voltage direct current (VSC-HVDC) does not only prolificate AC/DC grid coupling but also form new DC transmission ...
Yi Hao +4 more
doaj +1 more source
Energies, 2018 With the increased use of high voltage direct current (HVDC) systems, line commutated converters (LCC-HVDC) and voltage source converters (VSC-HVDC) tend to feed into AC systems over short electrical distances.
Chao Xiao +5 more
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Research on a new scheme of LCC‐HVDC line protection
The Journal of Engineering, 2017 High‐performance protection scheme of the transmission line is very important for the safe and reliable operation of line commutated converter‐based high‐voltage direct current (HVDC) system. The transmission line protection scheme applied in existing projects is lack of reliability, rapidity and incomplete in theory.
Guobing Song +4 more
openaire +1 more source
Power Stability Analysis and Evaluation Criteria of Dual-Infeed HVDC with LCC-HVDC and VSC-HVDC
Applied Sciences, 2021 This paper analyzes the power stability of the hybrid dual-infeed high-voltage direct-current (HVDC) system containing a line commutated converter-based HVDC (LCC-HVDC) and a voltage source converter-based HVDC (VSC-HVDC).
Xinglong Wu, Zheng Xu, Zheren Zhang
doaj +1 more source
IEEE Access, 2021 Line-commutated converter (LCC) based high-voltage direct current (HVDC) technology is a common technology for long-distance transmission of electricity.
Xiao Jin, Heng Nian, Bo Pang
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High Voltage, Volume 11, Issue 3, Page 646-655, June 2026.ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley +1 more source
Energies, 2018 In order to improve the simulation speed of the AC/DC hybrid grid, the inductance/capacitance (L/C) switch model for line-commutated converter of high-voltage direct current (LCC-HVDC) is presented in this study.
Yangyang He +4 more
doaj +1 more source