Abstract
This paper presents improvements to the quality of power in hospital building installations using power capacitors. Power quality in the distribution network is an important issue that must be considered in the electric power system. One important variable that must be found in the quality of the power distribution system is the power factor. The power factor plays an essential role in determining the efficiency of a distribution network. A good power factor will make the distribution system very efficient in using electricity. Hospital building installation is one component in the distribution network that is very important to analyze. Nowadays, hospitals have a lot of computer-based medical equipment. This medical equipment contains many electronic components that significantly affect the power factor of the system. In this study, power quality analysis has been carried out on the building installation of one of the largest hospitals in Yogyakarta, Indonesia. In the initial condition, the power losses at the facility were quite high. Installation of power capacitors in these installations can improve the power factor, and ultimately improve the performance of the electrical installation system in the hospital building.
Highlights
The estimated electricity demand is calculated based on the intensity of the need for electricity usage
The amount of power losses and voltage losses on the distribution channel depends on the type and length of the conduit, the kind of distribution network, the capacity of the transformer, the kind of load, the power factor, and the amount of installed power and the number of inductive loads that cause an increase in demand reactive power [4]-[6]
After making improvements to the power factor by raising cos phi, which was initially from 0.73 to 0.9, it can reduce the amount of reactive power, apparent power, increase the active power, and cause a decrease in the load current
Summary
The estimated electricity demand is calculated based on the intensity of the need for electricity usage. The amount of power losses and voltage losses on the distribution channel depends on the type and length of the conduit, the kind of distribution network, the capacity of the transformer, the kind of load, the power factor, and the amount of installed power and the number of inductive loads that cause an increase in demand reactive power [4]-[6]. Reduced electrical power, followed by a large number of systems that use energy, will result in not optimal performance of each component and will cause several problems faced, including high line current, low power factor, and power losses [7]-[9]. If the inductive and capacitive reactive loads get higher, it will increase the current, increase the power losses, and reduce the power factor [10]
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