Measurement-Based Formulation for Online Optimal Reactive Power Dispatch Problem

Minh Hoa Nguyen, Van Hoan Pham

Abstract


This paper presents a measured data-based formulation to solve the optimal reactive power dispatch problem for real-time applications. The measurements gathered from the phasor measurement units are adopted to estimate sensitivities that present a linear relationship between monitored variables. The optimal reactive power dispatch problem in this paper is formulated in terms of the sensitivities, so that it can be solved by using the measurements only. To minimize overall active power losses while keeping voltages within their limits, the least-square estimation methodology is applied. The formulation enables a new measurement-based strategy that can adjust to changes in the operating point and topology of the system. Simulation results show that the proposed formulation can deal with effectively the reactive power dispatch problem in terms of performance and is much faster in calculation time with other formulation based on load flow calculation, implying that the strategy is ideally suited to real-time applications.

Keywords


Reactive power dispatch; voltage control; phasor measurement units; MVMO algorithm.

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v11i3.12057.g8234

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