Dynamic Energy Balancing and Control Algorithm for 100 kWp PV-Diesel Generator Hybrid Power Plant System

Abstract

The PV-diesel generator hybrid system with using AC coupling configuration is an application of remote area power system that can be generally defined as an effective electricity production and distribution systems suitable for stand alone power system. The system consists of a combination of PV generators, diesel generators and also includes battery storage. The hybrid system controller with dynamic energy balancing and control algorithm is a supervised controller which is designed for 100 kWp PV-Diesel Generator Hybrid Power Plant System (PVHP) at Kapas Island, Malaysia in this paper can optimize the usage of renewable energy and always balance energy at every instant point of time to avoid energy reversing from excess PV energy. Another advantage of the dynamic energy balancing algorithm is to serve the short term peaking load by using reserved energy from battery bank which results in avoiding the other generator to start-up in order to reduce the diesel fuel consumption that can increase the performance of hybrid system. In addition, this algorithm determines the efficiency of battery charging. Moreover, this algorithm also can control generator not to be operated below a generator’s preferable minimum load and frequently started-up and shut-down which can increase the generator life expectancy and generally diminish the maintenance requirement frequency. The dynamic energy balance algorithm is implemented and evaluated for PVHP at Kapas Island, Malaysia which is using GSM modem to allow remotely connecting to access hybrid system controller at Kapas Island, Malaysia for real time monitoring system and retrieving data logging information in order to evaluate the performance of the system.