Current Research Projects

MSc Thesis -1: Distributed voltage control in low voltage distribution systems (2020)

Operation of power systems is undergoing a paradigm shift from control of only hundreds/thousands of large generators to controlling millions (or more) loads and distributed energy resources. It is necessary to coordinate the actions of these components at various levels depending on the control objective e.g. voltage regulation is distribution networks. A centralized control approach (as adopted at present) is practically infeasible necessitating a fully/partly distributed approach with minimal reliance on communication. This project would investigate distributed control approaches (such as in [1]) for power system problems using consensus type approaches or otherwise. The control elements include different type of power electronic compensators as discussed in [2].

Requirements – Experience in the use of Matlab/Simulink (SimPowerSystems) for modelling of a power system, enrolment in Sustainable Electrical Systems

[1] K. E. Antoniadou-Plytaria, I. N. Kouveliotis-Lysikatos, P. S. Georgilakis, and N. D. Hatziargyriou, “Distributed and Decentralized Voltage Control of Smart Distribution Networks: Models, Methods, and Future Research,” in IEEE Transactions on Smart Grid, vol. 8, no. 6, pp. 2999-3008, Nov. 2017.

[2] Z. Akhtar, B. Chaudhuri, and S. Y. R. Hui, “Comparison of Point-of-Load vs. Mid Feeder Compensation in LV Distribution Networks with High Penetration of Solar Photovoltaic Generation and Electric Vehicle Charging Stations,” IET Smart Grid, vol. 2, issue 2, pp. 283-292, 2019.

MSc Thesis -2: Distributed control of energy storage systems (2020)

Increasing use of distributed generation (DG), mainly roof-top photovoltaic (PV) panels and electric vehicle (EV) charging would cause over- and under-voltage problems generally at the remote sections of the low-voltage (LV) distribution feeders. As these voltage problems are sustained for a few hours, direct load control and PV curtailment is not always feasible. Distributed energy storage systems can be used to control LV voltages and to minimise network power losses. These energy storage systems can be controlled using the distributed optimization methods like consensus [1] or decomposition-coordination [2]. This project will investigate the effectiveness of distributed energy storage systems in terms of voltage control capability, required inverter capacity, network losses, and PV throughput. The criteria for selection of the optimal location of these storage systems can also be discussed.

Requirements – Experience in the use of Matlab/Simulink (SimPowerSystems) for modelling of a power system, enrolment in Sustainable Electrical Systems

[1] K. Utkarsh, A. Trivedi, D. Srinivasan, T. Reindl, “A consensus-based distributed computational intelligence technique for real-time optimal control in smart distribution grids”, IEEE Trans. Emerg. Topics Comput. Intell., vol. 1, no. 1, pp. 51-60, Feb. 2017.

[2] W. Zheng, W. Wu, B. Zhang, H. Sun, Y. Liu, “A fully distributed reactive power optimization and control method for active distribution networks”, IEEE Trans. Smart Grid, vol. 7, no. 2, pp. 1021-1033, Mar. 2016.