Development of Analyzer Based Power Factor Correction Device
The ever increasing energy demand nationwide leads to the increase of distribution and transmission losses. Improving the power quality places an important role in suppressing power losses and disturbances in the electrical system. Mostly, electrical loads are inductive that generates reactive power component which causes poor power quality. However, correcting power factor by switching capacitor enhances the power quality profile of an electrical system thereby reducing the current injected into the distribution line. Although there are technologies available in the market capable of correcting power factor, its functionality and application are limited to industrial application only. This paper presented the development of power factor correction (PFC) device through the use of power analyzer as the primary instrument. Data from the analyzer was received and manipulated by microcontroller unit which performs switching capacitor in the electrical system. Application of capacitive power depended on the reactive power drawn by the electrical load and the associated program embedded to the microcontroller. The PFC device automatically improves the power factor of the electrical system up to 95 percent. As a result, the apparent power drawn by the electrical system and the electrical current injected to distribution line decreased. It does not apply capacitive power once the overall power factor of the electrical system is above 95 percent or capacitive. The device was suitable for improving the power efficiency of distribution and transmission system. Its adaptability to power quality monitoring and energy metering equipment is easy since it uses a power analyzer which could serve as the interfacing component between them.