DocumentCode :
3693987
Title :
Estimating the dynamic power requirements for controllable energy storage on PV microgrid
Author :
Nyasha Horonga;Willie Cronje;Ivan Hofsajer
Author_Institution :
School of Electrical and Information Engineering, University of the Witwatersrand, Johannesburg, South Africa
fYear :
2015
Firstpage :
1
Lastpage :
5
Abstract :
This paper investigates the dynamic power requirements for controllable energy storage systems used for stabilization of standalone three-phase low-voltage microgrids with high penetration of PV energy. It uses recorded data of fluctuating Photo-voltaic (PV) sources and fluctuating loads to determine how an ideal controllable energy storage can be used to stabilize a microgrid with 100% PV energy penetration. Using the data recorded for a typical bad day in Johannesburg, the sampling time required to capture the dynamics in PV sources was found to be 2 seconds. However this report uses sampling time of 1 second to calculate the ramp rate required for the energy storage to stabilize a PV microgrid. For the case considered in this paper, the ramp rate was found to be 0.4 pu/second.
Keywords :
"Microgrids","Energy storage","Voltage control","Inverters","Power demand","Load modeling","Buildings"
Publisher :
ieee
Conference_Titel :
AFRICON, 2015
Electronic_ISBN :
2153-0033
Type :
conf
DOI :
10.1109/AFRCON.2015.7331989
Filename :
7331989
Link To Document :
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