PhD defence: Madhusudhan Pandey

Madhusudhan Pandey at the University of South-Eastern Norway, Faculty of Technology, Natural Sciences and Maritime Sciences (TNM) will be defending his thesis for the degree of philosophiae doctor (PhD).

19 Oct

Practical information

  • Date: 19 October 2023
  • Time: 09.30 - 15.00
  • Location: Porsgrunn, Auditorium A-271
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    Both the trial lecture and the PhD defense are open to the public.

    Zoom link 
    Meeting ID: 684 6658 0910
    Password: 191023

    Program

    Kl. 09.30: Trial lecture: Norwegian hydropower as provider of flexibility services for the European grid: Potential, problems, and pitfalls

    Kl. 12.00: PhD defence: Modelling Tool for Hydropower Systems, with Analysis and Design

    Immediately after the defence the doctoral programme will hold a small defence reception outside Auditorium A-271, approximately from 15:00-15:30.

    Evaluation committee:

    • First opponent: Francesco Casella, associate professor, Politecnico di Milano
    • Second opponent: Morten Hovd, professor, NTNU
    • Third opponent and administrator of the committee: Ru Yan, associate professor, USN

    Supervisors

Any questions?

Madhusudhan Pandey will defend his PhD degree.

The tilte of the thesis: Modelling Tool for Hydropower Systems, with Analysis and Design

Madhusudhan PandeySummary

Norwegian water reservoirs provide nearly half of Europe's reservoir capacity. Consequently, hydropower production from these reservoirs plays a significant role in the European interconnected grid, helping to balance the overall variability caused by intermittent energy sources like solar and wind. Hydropower, with its dispatchable capability, complements solar and wind energy sources, contributing to mitigating the environmental impact of fossil fuels. To ensure the operational security of the future grid, the incorporation of innovative technology and market solutions is imperative. This calls for contributions from a range of disciplines, including physics, engineering, economics, and others. Due to globalization, the demand for and scope of these contributions are extensive, necessitating the participation of many individuals. One effective approach to fostering collaboration is the use of open-source code.

 

In this work, we enhance an existing open-source hydropower library called OpenHPL, which is based on the Modelica language. We augment it with models of both "open and closed surge tanks" and "conical and Moody spreading pipes type draft tubes." Achieving optimal hydropower production relies on advanced control methods grounded in comprehensive system models. OpenHPL is built on first principles, employing mass and momentum balances. Users of this library can implement the operation of hydropower plants under various scenarios, including electrical load rejections and acceptances. Additionally, the library can be seamlessly integrated with other Modelica libraries. Furthermore, we implement a standard active power frequency regulation scheme. We explore three types of power grid regulation schemes: isochronous governor control, droop governor control, and automatic generation control (AGC) for isolated power systems. Based on the grid frequency step response, two types of controllers, PI controller, and MPC, are investigated for active power frequency regulation.