Results 141 to 150 of about 45,889 (185)
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Frequency Scan Based Stability Analysis of an LCC-HVdc System
2019 IEEE Canadian Conference of Electrical and Computer Engineering (CCECE), 2019Frequency scanning is a method for extracting the small-signal model of a power electronic system (PES) by injecting a wide-band signal in its time-domain simulation at steady state. This paper presents the stability analysis of the interactions between a Line Commutated Converter HVdc system (LCC-HVdc) and its ac grid using a frequency scanning ...
M. Shirinzad, M. K. Das, Ani M. Gole
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Electromagnetic modeling of LCC-HVDC
2020This chapter describes the electromagnetic transient (EMT) modeling of two-terminal line commutated converter-based high-voltage direct current (LCC-HVDC) transmission systems. The scope of the description is confined to modeling for the computation of EMTs associated with HVDC transmission systems using the widely spread EMT program-type method.
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Decentralized Supplementary Control of Multiple LCC-HVDC Links
IEEE Transactions on Power Systems, 2016This paper presents a decentralized wide-area coordinated supplementary control of multiple line-commutated converter (LCC)-HVDC links to 1) prevent interactions among the HVDC links and 2) enhance the damping of the inter-area oscillatory modes. The proposed approach is based on the sparsity-promoting optimal control. The main features of the proposed
Sahar Pirooz Azad +2 more
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A Coordinated Marginal Current Control Method for LCC-HVDC
IEEE Transactions on Power Systems, 2019Line-commutated-converter-based HVdc (LCC-HVdc) is extensively used in modern power systems. Most of the LCC-HVdcs are implemented with the control strategy termed marginal current control method (MCCM), while their operation is sensitive to disturbance from the ac part of the system.
Jian Xu +8 more
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Development of an Advanced LCC-HVDC Model for Transmission System
11th IET International Conference on AC and DC Power Transmission, 2015This paper describes an advanced LCC-HVDC model developed in PowerFactory for National Grid under the background of Western HVDC link in UK. Unlike most of the HVDC models in different simulation packages, this model explicitly incorporates the Automatic Filter Switching control and On-Load Tap Changer (OLTC) control.
null Ying Xue +4 more
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Verification on Valve Losses of LCC HVDC Converter Station in Korea
2020 3rd International Conference on Power and Energy Applications (ICPEA), 2020This paper deals with verification of valve losses on High Voltage Direct Current(HVDC) converter stations in Korea. Technique of calculating losses is one of important verification process to evaluate systems performance, so customers have right to get accurate information of losses in project bidding process.
Chur Hee Lee +2 more
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LCC HVDC bipoles configurations and their comparison with same and separate line
2015 Annual IEEE India Conference (INDICON), 2015Over the last 20 years, LCC HVDC has become the dominating technology for long-distance transmission of bulk power [1]. With two bipoles power can transfer through same HVDC line or by separate line. Both bipoles can run with lots of different configuration as per availability of converter and line and requirement of power.
Firoz Ahmed, Rajat Mishra
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Harmonic Characteristics of LCC-HVDC under Unbalanced Conditions
2023 IEEE International Symposium on Circuits and Systems (ISCAS), 2023Liang Wang +3 more
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Modeling of LCC-HVDC Stations Based on Concept of Motion Equation
2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia), 2019Line Commutated Converter based High Voltage Direct Current (LCC-HVDC) Transmissions are widely applied in transmitting large-capacity electricity in China. The stability of power system may be threatened due to dynamic interactions between multiple large-capacity converter stations in AC and DC power grids. Several studies have reported some stability
Jun Lu +4 more
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Tapping existing LCC-HVdc systems with Voltage Source Converters
2016 IEEE Power and Energy Society General Meeting (PESGM), 2016This paper presents the application of a Full-bridge modular multi-level converter (FB-MMC) to tap an existing LCC-HVdc system. During faults, the dc voltage of the FB-MMC is controlled to reduce the fault current instead of blocking the converters. Electromagnetic Transient Simulations performed with PSCAD has been used to demonstrate the performance ...
D.H.R. Suriyaarachchi +2 more
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