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Research on Power Modulation Strategy for MMC-HVDC and LCC-HVDC in Parallel HVDC System
2019 IEEE 3rd Conference on Energy Internet and Energy System Integration (EI2), 2019Due to the difference between MMC-HVDC and LCC-HVDC control characteristics and the mutual influence of parallel connection, its power modulation strategy is different from that of LCC-HVDC. Coordinated control strategy of parallel system of MMC-HVDC and LCC-HVDC is analyzed.
Yihua Zhu +5 more
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Special HVDC controls for TNB/EGAT HVDC interconnection system
Proceedings. International Conference on Power System Technology, 2003The actual controls system of TNB/EGAT HVDC interconnection system is implemented in a high-speed graphically programmable digital control system. This paper describes the features and operations of the controllers by giving a brief description of the pole control functional environment that is employed in the TNB/EGAT HVDC interconnection system. This
A.E. Ariffin +3 more
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PES T&D 2012, 2012
This presentation will provide an introduction into the main components which make up conventional Line Commutated Converter (LCC) HVDC, with ratings ranging from 75MW at the lower end, all the way up to 800 kV. This will include all of the HVDC configurations, including Back to Back, Underground/Submarine Cable, Overhead Line, covering the main ...
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This presentation will provide an introduction into the main components which make up conventional Line Commutated Converter (LCC) HVDC, with ratings ranging from 75MW at the lower end, all the way up to 800 kV. This will include all of the HVDC configurations, including Back to Back, Underground/Submarine Cable, Overhead Line, covering the main ...
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Modeling and simulation analysis of Hybrid Bipolar HVDC system based on LCC-HVDC and VSC-HVDC
2018 IEEE 3rd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC), 2018In recent years, it's mature that the traditional Line Commutated Converter High Voltage Direct Current (LCC-HVDC) in Chinese power system. As power electronic devices become more and more sophisticated and even perfect in practical engineering applications, Voltage Source Converter based on High Voltage Direct Current (VSC-HVDC) has also been applied ...
Shuping Gao +3 more
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Stability mechanism analysis of HVDC control system for power system restoration using HVDC
2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011This paper study the power system restoration procedure with external power supplies through HVDC transmission channel. The simplified models of the transmission system under different control modes are established and their stability margin are analyzed by root locus diagram. In consideration of the influence of the short circuit capacity and rotating
Hongtao Wang, Chengming He, Lei Fu
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HVDC life extension for Nelson River HVDC system
2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309), 2003The Nelson River HVDC transmission system in Manitoba, Canada, is described with reference to equipment upgrades, equipment replacements and process improvements completed to meet safety, environmental and reliability performance goals. Today's operational environment demands increased HVDC system performance, which in many cases exceeds original ...
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A review on HVDC protection system
2017 IEEE International Conference on Circuits and Systems (ICCS), 2017This paper proposes the overview of UHVDC transmission system, which is widely used for long distance and large capacity transmission. Since the long distance of DC lines are perplexing, which fetches the environment. The fault in HVDC system that has uppermost liability in sense. A bipolar system that can perform the polarities on both poles.
C. Poongothai, K. Gayathri
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1998
This chapter discusses HVDC transmission systems that can be configured in many ways to take into account cost, flexibility and operational requirements.
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This chapter discusses HVDC transmission systems that can be configured in many ways to take into account cost, flexibility and operational requirements.
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IEEE Transactions on Power Apparatus and Systems, 1970
Most commercial HVDC plants now operating are equipped with the same type of control system, the so-called individual phase control system. This system is simple and the operating experience is excellent. However, the requirements for future installations will sometimes be difficult to fulfill with the existing control system. This may be the case when
Ake Ekstrom, Gote Liss
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Most commercial HVDC plants now operating are equipped with the same type of control system, the so-called individual phase control system. This system is simple and the operating experience is excellent. However, the requirements for future installations will sometimes be difficult to fulfill with the existing control system. This may be the case when
Ake Ekstrom, Gote Liss
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2020
In the case of VSC-based HVDC transmission systems, the transfer of power is controlled in the same way as in the case of a classic HVDC transmission. The inverter side controls the active power, while the rectifier side controls the DC voltage [33, 56]. With classic HVDC, the reactive power cannot be controlled independently of the active power.
Nagwa F. Ibrahim, Sobhy S. Dessouky
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In the case of VSC-based HVDC transmission systems, the transfer of power is controlled in the same way as in the case of a classic HVDC transmission. The inverter side controls the active power, while the rectifier side controls the DC voltage [33, 56]. With classic HVDC, the reactive power cannot be controlled independently of the active power.
Nagwa F. Ibrahim, Sobhy S. Dessouky
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