Power Factor Correction Control Based on Internet of Things Using Lumped Compensation Capacitor Bank

Power factor is often used as an indicator of a good or bad power supply in a system Electrical power in household and industrial needs for inductively reactive loads can cause a decrease in power factor The decrease in power factor is a problem that must be minimized because it can make the quality of electrical power not optimal which is detrimental to consumers and a decrease in the ability to supply electrical power to electrical energy suppliers. Capacitive reactive power can reduce this loss by installing capacitors. Therefore, we need a tool that can improve power factor value and increase efficiency for distribution systems under inductive loads. The tool that will be made using a lumped compensation capacitor bank uses the reactive power compensator calculation method to get the required capacitor capacitance. In this research, a power factor repair tool has been made using the NodeMCU ESP8266. Microcontroller and also an android application as a connection tool with the Internet of Things server. MQTT protocol was chosen as IoT protocol after comparing speed and energy consumption with HTTP protocol. Also in this research, added recommendation features to calculate the value of capacitance capacitors that are installed in the devices to make them easier to use during installation. The system is implemented in a house with a power rating of 900 Watt and uses 4 capacitors with each size in micro Farad $(\mu F)$ units of 2.5, 3, 5, and 5. The result takes 1 minute 45 seconds to reach a set point of 0.95 Power Factor with an average error of 0.8%.