Modeling a Microgrid that Integrates Renewable Energies in IEC 61850 - 7 - 420 and IEC 61400 - 25 - 3

Abstract

This paper explores a information model for a small electrical network (Microgid) that integrates renewable energies based in standard protocols. The information model of the micro network will be made up of a solar energy source, a wind energy source, an energy storage element, a non-renewable source such as a diesel generator. Each of the renewable sources is modelling based on the logical nodes of the IEC 61850-4-2, IEC 61850-7-420, IEC 61400-25-2 standards. The objective of this definition is select: logical nodes, variables and commands, required to achieve coordinated control. This interchange of information is required to develop more complex algorithm of distributed control resources. A control architecture based and structured in these standards will to allow interoperability between the controllers of the power sources of the network, regardless of who develops and manufactures the device. This work is intended to ensure that information can be exchanged to control the load flows in the electric network that integrates renewable energies. All communications between controllers will be based on these protocols that allow the exchange of information over ethernet networks for critical process.

Simulation of a microgrid for a non-interconnected zone that integrates renewable energies

“…The simulation model is designed to represent the electric grid of the non-interconnected area of Puerto Carreño in Colombia. The Figure 2 [17,18] shows the single line diagram, this electrical grid has the following characteristics: The microgrid has a connection from an electrical network at 34.5 kV, this energy is sent to a distribution substation at 13.2 kV (Grid Connection), the Diesel power plants in 480V are connected to the grid through a step-up transformer to the 13.2kV medium voltage busbar, the loads are connected by a pole-mounted reducer transformer that reduces the voltage from 13.2 kV to 208/120 V to be used by the residential load.…”

“…The size of the load is define by the report from IPSE in the monthly telemetry report of the non-interconnected area of Puerto Carreño 2014 [17,18]. The power of the Diesel generator is the sum of the plants that this network already has.…”