Research & Publications

A selection of publications by members of the team.

  1. A Novel Mixed-Integer Linear Programming Framework for AC Optimal Power Flow and Voltage Stability in Renewable-Rich Power Systems

    Garth Greubel, Bhanu Pillay, Akhtar Kalam and Amit Agarwal

    IEEE Access, Volume 14, pp. 116170–116197 · 2026

    DOI 10.1109/ACCESS.2026.3716867

    Presents a novel mixed-integer linear programming formulation for multi-period AC optimal power flow that preserves active and reactive power interactions while modelling the full nonlinear AC network behaviour accurately. The framework supports combined cost and voltage-stability optimisation for renewable-rich grids and microgrid systems.

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  2. Analysis of optimal power flow for day-ahead scheduling in South Africa using biologically inspired algorithms

    Garth Greubel, Akhtar Kalam and Amit Agarwal

    Frontiers in Energy Research, Volume 14, Article 1742252 · 2026

    DOI 10.3389/fenrg.2026.1742252

    Compares a deterministic MILP/DC optimal-power-flow benchmark with genetic and gorilla troop optimisation for a South African day-ahead virtual-grid scheduling case, followed by AC and voltage-stability validation.

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  3. Optimisation and Evaluation of CHP Engine Operational Strategies within Sainsbury’s Stores

    Toby Daniels and Bhanu P. Pillay

    Department of Chemical Engineering, Imperial College London. Chemical Engineering Research: Reports of the 4th Year Research Projects, Volume 2, approximately pp. 307–316. · 2020

    Evaluates alternative CHP engine operating strategies for Sainsbury’s stores using mathematical optimisation to compare operational and cost performance.

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