Results 241 to 250 of about 1,814,391 (304)

Research on hybrid HVDC

2004 International Conference on Power System Technology, 2004. PowerCon 2004., 2005
Based on analysis of the development, technology characteristics and application scope of conventional HVDC and voltage source converter based HVDC (VSC-HVDC), an alternative form of HVDC transmission, named hybrid HVDC, is presented in this paper. At first the fundamental principle and technology characteristics of hybrid HVDC are analyzed, then the ...
null Li Guangkai, null Li Gengyin, null Liang Haifeng, null Yin Ming   +3 more
openaire   +1 more source

Research on the Multiphysics Field-Circuit Coupling Model of Press Pack IGBT Considering the Application of Hybrid HVDC Breakers

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021
Press pack insulated gate bipolar transistor (PP IGBT) is suitable for the hybrid high voltage direct current (HVdc) breaker to clear the fault current of the flexible HVdc transmission system with its advantages of double-side cooling, short-circuit ...
E. Deng, O. Wenzel, Zhibin Zhao, Yiming Zhang, Xiaoliang Ying, Jinyuan Li, Yongzhang Huang   +6 more
semanticscholar   +1 more source

Hybrid simulation for HVDC

2020
Power system transient simulation is an important approach to study the system's dynamic behaviors and guide its daily operation schedule. It can be classified into the following two categories based on the different scales of time step: electromagnetic transient (EMT) simulation and transient stability analysis (TSA). EMT has time step in microseconds,
null Wenchuan Wu, null Yizhong Hu
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Hybrid Commutation Converter in HVDC Systems

Materials Science Forum, 2010
This paper deals with DC – AC static converter systems, of very high voltages and currents, used for electricity power transmission. It has been analyzed three types of converters: with forced commutation, with commutation from load and the solution proposed by the authors. There are shown the advantages in hybrid switching converters, which in essence
Horia Balan, Maria Buzdugan, I. Vadan, E. Simion, P. Karaissas   +4 more
openaire   +1 more source

Equivalent characteristic impedance based hybrid-HVDC transmission line fault location

, 2021
Aiming at the transmission line fault in Hybrid-HVDC system, this paper divides the fault evolution process into different stages according to the difference of transition resistance at the fault point and the conduction state change of power electronic ...
Jian Wang, Yanxia Zhang, T. Li
semanticscholar   +1 more source

Power Reversal of Hybrid HVDC System

11th IET International Conference on AC and DC Power Transmission, 2015
Hybrid HVDC combines the advantages of line commutated converter (LCC) and modular multilevel converter (MMC). In this paper the topology and basic control strategy of hybrid HVDC are described. Then the power reversal of hybrid HVDC is analysed. For LCC-HMMC (MMC adopting half bridge sub-module), the sequence of power reversal after stopping operation
null Lujie Yu, null Chengyong Zhao, null Jianzhong Xu, null Xiaobo Hu, null Ning An, null Chunyi Guo   +5 more
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EMTP modeling of hybrid HVDC breakers

2015 IEEE Power & Energy Society General Meeting, 2015
HVDC meshed systems offer several advantages in front of their HVAC counterparts. However, the lack of fast, low-losses and reliable circuit breaker technology has postponed their implementation. A recently proposed hybrid breaker design can alter this situation.
Juan A. Martinez, Jesper Magnusson
openaire   +1 more source

EMI analysis of hybrid HVDC breaker

2016 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC), 2016
Hybrid high voltage direct current (HVDC) breaker is one of the most important equipment in DC transmission networks. As it is known, the hybrid breaker consists of large numbers of power electronics devices and the nonlinear elements, so, during the fault occurrence there are many transients voltages and currents with sharp rate of (dv/dt, di/dt ...
Mustafa Alrayah Hassan, Hai Yu, null Song Chi, null Yongjian Li, null Er Ping Li   +4 more
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Control and Capacity Design of Station-Hybrid HVDC System With DRU and MMC in Parallel for Offshore Wind Power Integration

IEEE Transactions on Power Delivery
The station-hybrid HVDC system combining diode rectifier unit (DRU) and modular multilevel converter (MMC) in parallel has garnered significant attention within the field of light-duty HVDC systems.
Huangqing Xiao, Huichen Gan, Yuqing Dong, Ying Huang, Yilu Liu   +4 more
semanticscholar   +1 more source

The hybrid model of VSC HVDC

Electrical Engineering, 2019
The trend in semiconductor developments has made the high-voltage direct current (HVDC) technologies based on voltage source converters feasible. This type of convertor has a number of potential advantages compared with “classic” HVDC, but deep analysis should be carried out before its integration in electric power system. In this paper, the results of
Ruslan Ufa, Mikhail Andreev, Nikolay Ruban, Aleksey Suvorov, Alexander Gusev, Igor Razzhivin, Alisher Askarov, Yuly Bay, Anton Kievets, Natalya Lozinova, Olga Suslova   +10 more
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