Abstract
A Micro Grid is an aggregate of many small-scale distributed energy resources (DERs); loads and can be operated independently or together with the existing power grid as a local power grid. The operator of such a grid takes charge of the energy supply and consumption of these resources and loads available in the grid. Meanwhile, the system operator of the grid considers the entire Micro Grid system to be a single load or a generator and assigns the responsibility of its internal management to the operator. The power production from a passive production resource is largely influenced by external environmental factors such as weather conditions, rather than operating conditions. Thus, this study conducted simulations for the cases where four kinds of conditional expressions had not been applied at all or one of them had been applied to compare and evaluate the effectiveness of each expression. As a result, the conditional equations were found to be effective when attempting to optimize the Micro Grids efficiently.
Highlights
Many small-scale distributed energy resources (DERs) and loads form a Micro Grid, a local power grid that can be operated independently or by tying with the existing power grid [1]
The result showed that the conditional equations were found to be effective when attempting to optimize the microgrid’s performance efficiently
The peak-control conditional equation was found to be effective in the simulation as system power usage was decreased below the peak level set at 15 kW
Summary
Many small-scale DERs and loads form a Micro Grid, a local power grid that can be operated independently or by tying with the existing power grid [1]. The energy resources in the Micro Grid are largely divided into passive resources that cannot be controlled by the grid operator and active resources controllable by him/her [5] These resources are classified as production, consumption or storage resources in terms of their applications [6]. Even though passive resources have a disadvantage in terms of inability to control, they have an advantage of being able to achieve eco-friendly power generation without much extra cost after the initial installation cost in majority of the cases. For this reason, these resources are being used as a major power supply resource of a Micro Grid. The result showed that the conditional equations were effective when attempting to optimize the Micro Grids efficiently
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