Multiple Initial Point Approach to Solving Power Flows for Monte Carlo Studies

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Journal Article
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Schipper, Josh
McNab, Sharee
Kueh , Yuyin
Mukhedkar, Radnya

Power flow solvers typically start from an initial point of power injection. This paper constructs a system of multiple initial points (SMIP) to enable selection of an appropriate initial point, with the objective to achieve a balanced improvement in the solution speed and accuracy, for problems with a large number of power flows. The intent is to recover time cost of forming the SMIP through the improvements to each power flow. The SMIP is tested on a time series based Monte Carlo study of Electric Vehicle (EV) hosting capacity in a low voltage distribution network, which has 5.4 million power flows. SMIP is applied to two power flow solvers: a Taylor series approximation and a Z-bus method. The accuracy of the quadratic Taylor series approximation was improved by a factor of 30 with a 27% increase in the solve time when compared against a single no-load initial point. A Z-bus solver with SMIP, limited to two iterations, gave the best performance for the EV hosting capacity case study.

Schipper J, McNab S, Kueh Y, Mukhedkar R (2022). Multiple Initial Point Approach to Solving Power Flows for Monte Carlo Studies. Energies. 15(19). 7141-7141.
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
40 - Engineering::4008 - Electrical engineering::400805 - Electrical energy transmission, networks and systems
40 - Engineering::4008 - Electrical engineering::400803 - Electrical energy generation (incl. renewables, excl. photovoltaics)
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