TY - GEN
T1 - Inertial Support from Offshore Wind Farms Interfaced through MTDC Grids
AU - Vennelaganti, Sai Gopal
AU - Chaudhuri, Nilanjan Ray
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/6
Y1 - 2018/12/6
N2 - Extracting inertial frequency support from an offshore wind farm (OWF), which is connected to asynchronous AC areas via a Multiterminal Direct Current (MTDC) grid is studied. The OWF controls are modified to emulate the entire AC-MTDC system with OWF as N -asynchronous-area MTDC system. When an AC-side disturbance occurs, a distress signal is transmitted from the corresponding converter. The distress signal carries basic information and is transmitted through the DC lines or existing communication channels, which are used for common DC voltage-droop control. After the distress signal is received, inertial and frequency-droop controllers are activated in converters of the participating asynchronous AC areas with values that are determined ahead of time by means of a proposed design process. This ensures that apart from the inertial support provided by the OWF operating in maximum power point tracking mode, all participating asynchronous AC areas also exchange both inertial and primary frequency support in a prescribed manner, i.e, obeying a ratio-based criterion. The proposed strategies are validated through rigorous nonlinear time-domain simulation studies using a detailed model of the study system.
AB - Extracting inertial frequency support from an offshore wind farm (OWF), which is connected to asynchronous AC areas via a Multiterminal Direct Current (MTDC) grid is studied. The OWF controls are modified to emulate the entire AC-MTDC system with OWF as N -asynchronous-area MTDC system. When an AC-side disturbance occurs, a distress signal is transmitted from the corresponding converter. The distress signal carries basic information and is transmitted through the DC lines or existing communication channels, which are used for common DC voltage-droop control. After the distress signal is received, inertial and frequency-droop controllers are activated in converters of the participating asynchronous AC areas with values that are determined ahead of time by means of a proposed design process. This ensures that apart from the inertial support provided by the OWF operating in maximum power point tracking mode, all participating asynchronous AC areas also exchange both inertial and primary frequency support in a prescribed manner, i.e, obeying a ratio-based criterion. The proposed strategies are validated through rigorous nonlinear time-domain simulation studies using a detailed model of the study system.
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U2 - 10.1109/ICRERA.2018.8567006
DO - 10.1109/ICRERA.2018.8567006
M3 - Conference contribution
AN - SCOPUS:85060644460
T3 - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
SP - 500
EP - 504
BT - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
Y2 - 14 October 2018 through 17 October 2018
ER -
