Analysis of Coordinated HVDC Control for Power Oscillation Damping

Controlling the active power of high-voltage dc (HVDC) transmission that interconnects two asynchronous ac grids can be used to improve the power oscillation damping in both of the interconnected ac systems. Using one HVDC link, achievable performance are limited since control actions may excite modes of similar frequencies in the assisting network. However, with coordinated control of two or more HVDC links, the limitations can be circumvented. With decoupling control the system interactions can be avoided all together. This paper investigates the conditions suitable for decoupling control. It is also shown that decoupling between system modes can be achieved using a proportional controller. The control method is compared to decentralized and $\mathcal{H}_{2}$ optimal control. The best control method for different system topologies is investigated by looking on input usage and stability following dc link failure.

[1]  R. L. Cresap,et al.  Operating Experience with Modulation of the Pacific HVDC Intertie , 1978, IEEE Transactions on Power Apparatus and Systems.

[2]  Lennart Ljung,et al.  Reglerteknik : grundläggande teori , 1981 .

[3]  T. Smed,et al.  Utilizing HVDC to damp power oscillations , 1993 .

[4]  P. Kundur,et al.  Power system stability and control , 1994 .

[5]  Ian Postlethwaite,et al.  Multivariable Feedback Control: Analysis and Design , 1996 .

[6]  J. Doyle,et al.  Robust and optimal control , 1995, Proceedings of 35th IEEE Conference on Decision and Control.

[7]  Wai-Chuen Gan.  Robust and optimal control of AC machines , 2001 .

[8]  Mehrdad Ghandhari,et al.  Improvement of power system stability by using a VSC-HVdc ☆ , 2011 .

[9]  Manfred Morari,et al.  Placement of HVDC links for power grid stabilization during transients , 2013, 2013 IEEE Grenoble Conference.

[10]  J. V. Milanovic,et al.  Probabilistic Evaluation of Damping Controller in Networks With Multiple VSC-HVDC Lines , 2013, IEEE Transactions on Power Systems.

[11]  Dmitry Kosterev,et al.  PDCI damping control analysis for the western North American power system , 2013, 2013 IEEE Power & Energy Society General Meeting.

[12]  Wilhelm Winter,et al.  Pushing the Limits: Europe's New Grid: Innovative Tools to Combat Transmission Bottlenecks and Reduced Inertia , 2015, IEEE Power and Energy Magazine.

[13]  Robert Eriksson,et al.  A New Control Structure for Multiterminal DC Grids to Damp Interarea Oscillations , 2016, IEEE Transactions on Power Delivery.

[14]  W. Du,et al.  Strong dynamic interactions between multi-terminal DC network and AC power systems caused by open-loop modal coupling , 2017 .

[15]  David J. Hill,et al.  Coordinated Control Strategies for Offshore Wind Farm Integration via VSC-HVDC for System Frequency Support , 2017, IEEE Transactions on Energy Conversion.

[16]  Lennart Harnefors,et al.  Impact on Interarea Modes of Fast HVDC Primary Frequency Control , 2017 .

[17]  Rui Fan,et al.  Interarea Oscillation Damping Control Using High-Voltage DC Transmission: A Survey , 2018, IEEE Transactions on Power Systems.

[18]  Karl Henrik Johansson,et al.  Fundamental Performance Limitations in Utilizing HVDC to Damp Interarea Modes , 2019, IEEE Transactions on Power Systems.