Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors

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Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors. / Xue, Ying; Zhang, Xiao-Ping.

In: IEEE Transactions on Power Systems, Vol. 31, No. 1, TPWRS-01743-2015, 01.2017, p. 753.

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@article{a45831b33ae94384a96a8749468c16a5,
title = "Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors",
abstract = "It is well-known that traditional LCC HVDC system is not able to control its reactive power and terminal AC voltages. This paper investigates the reactive power and AC voltage control at the inverter side of the LCC HVDC system with controllable capacitors. The system{\textquoteright}s ability of operating under negative extinction angle is utilized to achieve a wide range of reactive power control and, in particular, the ability of exporting reactive power. In connection with the inverter AC terminal voltage or reactive power control, among different control possibilities at the rectifier side, active power control is desirable since large variations of active power transfer is very unfavorable. Detailed theoretical analysis is carried out first to show the reactive power controllability, and the capacitor voltage level is selected based on the desired control range. In addition, a new extinction angle measurement approach is proposed for negative extinction angle measurements. The effectiveness of the reactive power/voltage control capability for the proposed system is validated through simulation results using Real Time Digital Simulator (RTDS). To verify the effectiveness of the reactive power and voltage control, CCC HVDC and LCC HVDC with SVC are also set up in RTDS, and simulation comparisons are made. Furthermore, contribution to AC voltage control in power system using the proposed method is demonstrated through simulation results on the modified two-area four-machine AC power system.",
keywords = "AC voltage control, HVDC transmission, HVDC with controllable capacitor, LCC HVDC, Reactive power control",
author = "Ying Xue and Xiao-Ping Zhang",
year = "2017",
month = jan
doi = "10.1109/TPWRS.2016.2557342",
language = "English",
volume = "31",
pages = "753",
journal = "IEEE Transactions on Power Systems",
issn = "0885-8950",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
number = "1",

}

RIS

TY - JOUR

T1 - Reactive Power and AC Voltage Control of LCC HVDC System with Controllable Capacitors

AU - Xue, Ying

AU - Zhang, Xiao-Ping

PY - 2017/1

Y1 - 2017/1

N2 - It is well-known that traditional LCC HVDC system is not able to control its reactive power and terminal AC voltages. This paper investigates the reactive power and AC voltage control at the inverter side of the LCC HVDC system with controllable capacitors. The system’s ability of operating under negative extinction angle is utilized to achieve a wide range of reactive power control and, in particular, the ability of exporting reactive power. In connection with the inverter AC terminal voltage or reactive power control, among different control possibilities at the rectifier side, active power control is desirable since large variations of active power transfer is very unfavorable. Detailed theoretical analysis is carried out first to show the reactive power controllability, and the capacitor voltage level is selected based on the desired control range. In addition, a new extinction angle measurement approach is proposed for negative extinction angle measurements. The effectiveness of the reactive power/voltage control capability for the proposed system is validated through simulation results using Real Time Digital Simulator (RTDS). To verify the effectiveness of the reactive power and voltage control, CCC HVDC and LCC HVDC with SVC are also set up in RTDS, and simulation comparisons are made. Furthermore, contribution to AC voltage control in power system using the proposed method is demonstrated through simulation results on the modified two-area four-machine AC power system.

AB - It is well-known that traditional LCC HVDC system is not able to control its reactive power and terminal AC voltages. This paper investigates the reactive power and AC voltage control at the inverter side of the LCC HVDC system with controllable capacitors. The system’s ability of operating under negative extinction angle is utilized to achieve a wide range of reactive power control and, in particular, the ability of exporting reactive power. In connection with the inverter AC terminal voltage or reactive power control, among different control possibilities at the rectifier side, active power control is desirable since large variations of active power transfer is very unfavorable. Detailed theoretical analysis is carried out first to show the reactive power controllability, and the capacitor voltage level is selected based on the desired control range. In addition, a new extinction angle measurement approach is proposed for negative extinction angle measurements. The effectiveness of the reactive power/voltage control capability for the proposed system is validated through simulation results using Real Time Digital Simulator (RTDS). To verify the effectiveness of the reactive power and voltage control, CCC HVDC and LCC HVDC with SVC are also set up in RTDS, and simulation comparisons are made. Furthermore, contribution to AC voltage control in power system using the proposed method is demonstrated through simulation results on the modified two-area four-machine AC power system.

KW - AC voltage control

KW - HVDC transmission

KW - HVDC with controllable capacitor

KW - LCC HVDC

KW - Reactive power control

U2 - 10.1109/TPWRS.2016.2557342

DO - 10.1109/TPWRS.2016.2557342

M3 - Article

VL - 31

SP - 753

JO - IEEE Transactions on Power Systems

JF - IEEE Transactions on Power Systems

SN - 0885-8950

IS - 1

M1 - TPWRS-01743-2015

ER -