An optimal management strategy for distributed storages in distribution networks with high penetrations of PV

This paper presents an innovative management strategy for distributed battery storages that greatly increases the capability of distribution networks to absorb and utilize photovoltaic (PV) generation. Optimal daily energy profiles for each storage unit are calculated using a Fourier series descript...

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Bibliographic Details
Published in:Electric power systems research 2014-11, Vol.116, p.147-157
Main Authors: Jayasekara, Nadeeshani, Wolfs, Peter, Masoum, Mohammad A.S.
Format: Article
Language:English
Subjects:
Applied sciences
Demand management
Direct energy conversion and energy accumulation
Distributed PV
Distributed storage
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Load flow
Miscellaneous
Operation. Load control. Reliability
Optimal power flow
Power networks and lines
Voltage regulation
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Summary:This paper presents an innovative management strategy for distributed battery storages that greatly increases the capability of distribution networks to absorb and utilize photovoltaic (PV) generation. Optimal daily energy profiles for each storage unit are calculated using a Fourier series description based on one day ahead energy forecasts. Each battery charge/discharge profile is optimized to minimize a cost function that includes network and battery losses, battery cyclic costs and the network voltage profile. The optimization method combined an interior-point algorithm and pattern search algorithm. Simulations are carried out on a three-phase distribution system over a period of 24h at 15min interval with time varying loads. The adopted technique in this paper shows significant control abilities in peak shaving and load leveling. Results also indicate that proposed approach can enhance the performance of the grid by improving the voltage stability and reducing distribution losses thus providing the required security for consumers. Results also illustrate capacity and charging/discharging rates of batteries highly depend on the location of the controlled consumer battery and amount of controlled batteries.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2014.05.010