Active Power Management for PV Systems under High Penetration Scenario

Abstract

Although PV systems are one of the most widely used alternatives as a renewable energy source due to their well-known advantages, there are significant challenges to address related to voltage fluctuations and reverse power flow caused by high PV penetration scenarios. As a potential solution to this problem, an active power management strategy is proposed in this work using a residential cluster as a benchmark. The proposed strategy is analyzed and experimentally verified, offering a simple way to reduce the voltage fluctuations by regulating the active power delivered by the PV system, achieving also relevant functionalities for the system, such as the regulation of the DC bus voltage, maximum power point tracking (MPPT), synchronization with the grid voltage, detection of high penetration conditions, and a simple strategy for the main controller with an effective performance. The proposal system shows satisfactory results being able to maintain grid voltage fluctuations within the voltage standard specifications.

Central Energy Storage System to Reduce the Harmful Effects of PV Systems under a High Penetration Scenario

“…Other strategies address the control of the power delivered by photovoltaic systems [27][28][29]. Some of them consider the use of active and reactive power, but these strategies do not take full advantage of the generation capacity of the photovoltaic systems, wasting energy and decreasing the PV panel's lifetime.…”