A review of active/reactive power control strategies for PV power plants under unbalanced grid faults

Abstract

A review of active/reactive power control strategies for PV power plants under unbalanced grid faults

Fault tolerance enhancement of the PV module system by improving the topology and control strategy

“…In summary, for the aforementioned partial shading problem, short-circuit fault and grounding fault, the present solutions mainly intend to find the GMPPT or fault zone with intelligent algorithms, but they will aggravate the computational burden and will be difficult to apply in practice, which may cause PV power loss and major catastrophic failures among the potential consequences of the undetected faults within PV modules [33][34][35]. Therefore, this paper aims to propose an improved topology and control strategy to solve these three problems.…”

Impact of grounding fault in PV modules on AC side and the suppression strategy based on 0‐axis control

“…Firstly, the fault detection algorithms generally depend on the different characteristics between the faulty and normal conditions, which may be influenced by the parasitic parameters and unavoidable error in the PV system. It is possible that PV power loss and major catastrophic failures are easy to occur among the potential consequences of the undetected faults within PV modules [29,30]. Secondly, the probability of the faults in the PV side is much larger than that of the line side, which will increase the difficulty to accurately detect the fault zone.…”