Results 91 to 100 of about 377 (128)
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Hybrid Cooling System for HVDC Convertor Valves
Applied Mechanics and Materials, 2014High Voltage Direct Current Transmission (HVDC), known as a future energy "highway", plays a key role in the history of electric power system development. In this paper, the present status and future prospect of HVDC convertor valves cooling system in china is analyzed.
Yu Liang Wen +4 more
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Comparison of DC fault handling strategies for hybrid HVDC system
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017The hybrid high voltage direct current (Hybrid HVDC) system based on line commutated converter (LCC) and modular multilevel converter (MMC) is a feasible solution for long distance bulk power transmission. In order to handle the dc-side short-circuit fault, two kinds of methods can be adopted. The first one is to replace half-bridge sub-modules (HBSMs)
Yi Lu +5 more
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Imtplementation of the Hybrid Inverter for HVDC/Weak AC System Interconnection
IEEE Transactions on Power Delivery, 1986The difficulties of operating HVDC system into weak AC system can be overcome by using the hybrid inverter. The objective of this paper is to find the best approach to implement the hybrid inverter. Among the various possible approaches, two artificially commutated converters employing the capacitive approach fulfill certain basic performance criteria ...
Kwa-sur Tam, Robert Lasseter
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Control Strategy of Hybrid HVDC System Based on LCC and Hybrid MMC
2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2019The Hybrid high voltage direct current (HVDC) system combines the advantages of both line commutated converter (LCC) and modular multilever converter (MMC). However, when it is applied to large-capacity overhead line transmission, there are two key problems: DC side fault self-clearance and the maintenance of power transmission after a fault occurred ...
Yuzhe XU +4 more
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Application of Hybrid Multi-terminal HVDC Transmission System
2017 International Conference on Computer Technology, Electronics and Communication (ICCTEC), 2017Hybrid HVDC is a new topology which contains line commutated converter (LCC) and the voltage source converter (VSC). This paper discusses the technical characteristics of flexible HVDC, multi-terminal high-voltage DC (MTDC), and Hybrid HVDC. And it offers an application method of the multi-terminal Hybrid HVDC transmission System, which has large ...
Yi Liu +5 more
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Reliability evaluation of hybrid multiterminal HVDC subtransmission systems
IEE Proceedings - Generation, Transmission and Distribution, 2002An approach to determining the reliability of a hybrid multiterminal HVDC sub-transmission system is presented. The performance analysis of a multiterminal HVDC subtransmission system is divided into three main segments: the rectifiers, the inverters and the underground cable system.
R. Billinton +2 more
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Modeling and Control of a Hybrid Three-terminal HVDC System
2017 IEEE 7th Annual International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), 2017With the continuous research of hybrid High Voltage Direct Current (HVDC), the conventional DC voltage control on Line Commutated Converter (LCC) side can not meet the requirements, so it is necessary to study DC voltage control on Voltage Source Converters (VSC) side.
Bingtuan Gao +3 more
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Dynamic performance of hybrid multiinfeed HVDC system on RTDS
2014 Eighteenth National Power Systems Conference (NPSC), 2014Multiinfeed HVDC systems are planned to meet the high demand of power in heavy load centers in developing countries. A multiinfeed HVDC system inverting into a weak AC network are of serious concern. The possible solution for better stability is using a VSC-HVDC as one of the infeed for the multiinfeed system.
J. Sreedevi +2 more
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A new hybrid algorithm for analysis of HVDC and FACTS systems
Proceedings 1995 International Conference on Energy Management and Power Delivery EMPD '95, 2002Hybrid stability programs use a transient stability analysis for AC power systems, in conjunction with detailed state variable or EMTP type modelling for fast dynamic devices. This paper presents a new hybrid algorithm that uses optimised techniques based on previously proposed methods.
G.W.J. Anderson +3 more
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Simulation Study for a Hybrid Multi-terminal HVDC System
2005/2006 PES TD, 2006A digital simulation model for a hybrid three terminal HVDC system is developed. In the hybrid three terminal HVDC system, both a VSC and a CSC are used. Based on the developed HVDC system, a control scheme is proposed, in which a DC constant current control is used for the CSC type rectifier, a constant extinction angle control is used for the CSC ...
X.F. Yuan, Shijie.J. Cheng
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