Energy management system for a residential grid-tied micro-grid
Abstract
With the national power grid under
tremendous pressure, there are enormous pressure exerted
on residential electricity consumers to cut-back on
electricity consumption to ensure a reliable supply. This has
led to residential electricity users wanting to generate their
own electricity through solar and wind systems, more
formally known as distribution energy resources (DERs).
The possibility of DERs currently exists within the
centralized power grid, but is currently not well supported
by Eskom and local municipalities. There are currently very
little widely implemented policies regarding net-metering
and feed-in tariff structures amongst Eskom and
municipalities. Thus, excess generated energy fed into the
grid is used elsewhere without any benefit going to the
owner of the DER. By implementing an active energy
management system (EMS) alongside the grid integrated
system, electricity generated by the DER can be consumed
locally by the residential loads. The EMS achieves an
electricity consumption reduction of 23. 4 % compared to a
system with no EMS. Further results show that the EMS
compensated system shows a cost saving of R19.17 per day
which translates to a reduction of 51. 4 % compared to a
system with no EMS
URI
http://hdl.handle.net/10394/18209https://ieeexplore.ieee.org/document/7102966
https://doi.org/10.1109/DUE.2015.7102966