Abstract
Due to the growing number of consumers in the electric power grid and increasingly variable loads, the issue of peak loads is becoming increasingly important.
At the same time, due to rapid technological advancements and falling prices of
battery storage systems, these are becoming an increasingly attractive solution
for reducing peak loads for end users. This thesis examines the use of a battery
storage system for peak shaving in an automated car wash system. First, the
basic principles of battery storage system operation are presented, along with
various types of batteries and energy storage systems. Next, the operation of the
car wash is described, including its main consumers and their impact on the load
profile. Based on an energy consumption analysis, the appropriate size of the
battery storage system was determined. Using simulations in MATLAB, the use
of a peak shaving system with and without a battery storage system was compared, and the possibility of active battery charging was further analyzed. The
results showed that, with an appropriate active charging strategy, it is possible
to achieve more efficient load smoothing and use a battery storage system with
a smaller capacity than in a system without intermediate charging. The power
of the converter and the characteristics of the consumption profile also play an
important role here, as they affect the battery storage system’s ability to reduce
peaks and recharge. It was also found that, by appropriately selecting the limits
of active charging, it is possible to significantly influence the uniformity of power
draw from the grid. Finally, possibilities for further improvements and upgrades
to the system are presented.
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