英国工程技术协会
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作者:J. Vaheeshan , M. Barnes , R. Shuttleworth
来源:[C].11th IET International Conference on AC and DC Power Transmission2015IET
摘要:When an HVDC system is subjected to AC side short circuit faults, the transformer core might be driven to saturation at fault recovery due to flux offset. The saturation will therefore cause the flow of inrush currents. In this paper, dynamic models of a MMC based VSC-HVDC system...
作者:M. Barnes , R. Shuttleworth
来源:[C].11th IET International Conference on AC and DC Power Transmission2015IET
摘要:Circuit breakers for High Voltage Direct Current (HVDC) are seen as a required technological step in the development of HVDC grids. The development of several new HVDC circuit breaker prototypes indicate that this step may be achieved in the years to come. In order to facilitate ...
作者:W. Wang , M. Barnes , O. Marjanovic
来源:[C].11th IET International Conference on AC and DC Power Transmission2015IET
摘要:DC voltage droop control is suggested by a number of authors for multi-terminal VSC-HVDC systems, due to its power sharing capability and distributed control characteristics. However, the stability and robustness of such a closed-loop droop controlled system have not been address...
作者:... O. Cwikowski , M. Barnes , R. Shuttleworth
来源:[C].11th IET International Conference on AC and DC Power Transmission2015IET
摘要:Voltage-Sourced Converter (VSC) HVDC is attracting significant attention as the UK tries to meet its renewable energy targets. However, compared with the traditional Current-Sourced Converter (CSC) HVDC, VSC-HVDC is more vulnerable to DC faults due to the lower DC side impedances...
作者:... W. Wang , M. Barnes , J.V. Milanovic´
来源:[C].11th IET International Conference on AC and DC Power Transmission2015IET
摘要:A generic method is proposed in this paper to integrate VSC terminals into AC systems taking into account the cascaded VSC control structure. The method allows the VSC models to be developed separately by considering them as current injections into the connected AC system, and th...
作者:Siyu Gao , M. Barnes
来源:[C].6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)2012IET
摘要:As the number of distributed power generation systems (DPGSs) connected to the utility grid is increasing, the issue of synchronization between the DPGSs and the grid is attracting more attention. The phase-locked loop (PLL) technique is considered as the state of art in providin...
作者:T. Lei , M. Ozakturk , M. Barnes
来源:[C].6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)2012IET
摘要:Wind turbine technology is currently driven by offshore development, which requires more reliable, multi-megawatts turbines. Models with different levels of detail have been continuously explored for years. This paper presents a 4.5MW doubly-fed induction generator wind turbine m...
作者:A. Beddard , M. Barnes
来源:[C].6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)2012IET
摘要:UK Round 3 offshore windfarms located more than 50km from the shore are likely to require a HVDC transmission system. The availability of these HVDC transmission schemes is a key factor in determining if these offshore windfarms are commercially and technically viable. This paper...
作者:M. Barnes , J.V. Milanovic
来源:[C].10th IET International Conference on AC and DC Power Transmission (ACDC 2012)2012IET
摘要:This paper identifies potential problems in integrating a point to point voltage source converter based HVDC system to an AC network. The AC network utilizes the classical two-area system where all generators are equipped with voltage and damping controls. A detailed model of the...
作者:W. Wang , M. Barnes , O. Marjanovic
来源:[C].10th IET International Conference on AC and DC Power Transmission (ACDC 2012)2012IET
摘要:This paper examines methods of control schemes of multiterminal VSC-HVDC systems for offshore wind farm integration. Modelling strategies of droop DC voltage characteristics for grid side converters are analysed in detail. Differences between voltage-current and voltage-power cha...

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