Results 11 to 20 of about 13,614 (252)
International Journal of Electrical Power & Energy Systems, 2022 Abstract Commutation failure is one of the most common faults in high voltage direct current (HVDC) transmission system. Subsequent commutation failures (SCFs) caused by commutation failure will cause large voltage and current swing. Several SCFs may cause DC transmission power interruption, which seriously threatens the safe and stable operation of ...
Hongyu Zhou +5 more
openaire +1 more source
Journal of Modern Power Systems and Clean Energy, 2023 For the safe and fast recovery of line commutated converter based high-voltage direct current (LCC-HVDC) transmission systems after faults, a DC current order optimization based strategy is proposed.
Renlong Zhu +5 more
doaj +1 more source
Energy Reports, 2023 With rapid development of HVDC transmission system, the coupling relationship between the AC and DC power grid has become increasingly stronger. Especially, the problem of voltage instability is prominent in HVDC receiving-end system, the dynamic ...
Fan Xiao +5 more
doaj +1 more source
Asymptotic dynamics of thermal quantum fields [PDF]
, 2001 It is shown that the timelike asymptotic properties of thermal correlation functions in relativistic quantum field theory can consistently be described in terms of free fields carrying some stochastic degree of freedom which couples to the thermal ...
Abrikosov +22 more
core +4 more sources
Electronics, 2022 A subsequent commutation failure (SCF) of the Line-Commutated Converter–High-Voltage Direct Current (LCC-HVDC) may occur during the recovery after the clearance of an AC fault, seriously threatening the safe and stable operation of the LCC-HVDC and the entire post-fault AC/DC hybrid power system.
Bowen Zheng +3 more
openaire +1 more source
Universal fault-tolerant gates on concatenated stabilizer codes [PDF]
, 2016 It is an oft-cited fact that no quantum code can support a set of fault-tolerant logical gates that is both universal and transversal. This no-go theorem is generally responsible for the interest in alternative universality constructions including magic ...
Chuang, Isaac L. +2 more
core +3 more sources
Adaptive VDCOL control strategy for the recovery of the UHVDC SPC system
The Journal of Engineering, 2019 The separating pole connection (SPC) mode of ultra-high-voltage direct current (UHVDC) can significantly improve the power stability, but when the AC bus of one pole is failed and two receiving systems are near, it may cause subsequent commutation ...
Shujun Yao +3 more
doaj +1 more source
How good must single photon sources and detectors be for efficient linear optical quantum computation? [PDF]
, 2007 We present a scheme for linear optical quantum computation (LOQC) which is highly robust to imperfect single photon sources and inefficient detectors.
Browne, D. E., Rudolph, T., Varnava, M.
core +2 more sources
Review of Research on Voltage Dependent Current Order Limiter for Commutation Failure Mitigation [PDF]
Dianli jianshe[Objective] The objective of this study is to systematically sort out the research status of the voltage dependent current order limiter（VDCOL）improvement method to enhance the ability of VDCOL control to commutation failure in high-voltage direct ...
ZHU Xuan, TANG Yi, ZHENG Chenyi, WANG Ying, DANG Jie, CUI Ting
doaj +1 more source
An Active Power Coordination Control Strategy for AC/DC Transmission Systems to Mitigate Subsequent Commutation Failures in HVDC Systems [PDF]
Electronics, 2021 Subsequent commutation failures (CFs) in HVDC systems will cause large-scale power flow transfer in AC/DC transmission systems and lead to overload risk in HVAC systems. In order to cope with these effects, a power coordination control strategy for the AC/DC transmission system with high-proportion wind power is proposed.
Xia Zhou +6 more
openaire +1 more source