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Embedded micro grid design & application for improvement in main grid performance and sustainability
Thesis   Open access

Embedded micro grid design & application for improvement in main grid performance and sustainability

Hayley O'Sullivan
Honours, Murdoch University
2016
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Whole Thesis Open Access

Abstract

This Thesis focusses on the practical application of Micro grid design in Western Australian, discussing current conditions of the main grid, challenges of micro grids, and how micro grid control can be used to improve the performance of the main grid. Using the case study of the Kalbarri LV grid, I created and implemented the design according to area needs and specifications on PowerFactory, taking into account assumptions made with the static load. I then compared different types of Master- Slave control strategies to compare which had the most positive effect on the grid in reliability and efficiency. Different from proposed strategies, Voltage controlled master and current controlled slaves ended up being the most appropriate choice for grid connected mode due to increased reliability, efficiency and practical design in regards to transition from grid connected mode to Isolated mode and vice versa. The main reason for this is that the main grid control strategies were not enough to maintain recommended voltage limits to this feeder in an end of line scenario, due to the long distance. Standardization for micro grids in regards to control requires individual assessment in regards to the micro grid’s purpose, whether it be to go unnoticed in a grid or increasing the performance of the main grid.

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