A comprehensive review of fault ride‐through capability of wind turbines with grid‐connected doubly fed induction generator

Abstract

An overview of different strategies applied to enhance the fault Ride-Through (FRT) ability of the Doubly Fed Induction Generators (DFIGs)-based Wind Turbines (WTs) during transient state is introduced in the study. Different FRT strategies dependent on (a) additional protection circuit's establishment, (b) reactive power injecting devices installation, and (c) various control approaches have been proposed in the literature. Typically, during disturbance in the grid to restrict the generated rotor overcurrent and undesirable Direct Current (DC)-link overvoltage, the protection circuits or control structures are connected. Concurrently, to improve the transient performance of the DFIG-based WT, the reactive power injecting devices outperform any deficiency of the reactive power and consequently bound the DC-link voltage and current in the rotor. Actually, during the transient state without damaging its operating strategy, many research findings show a productive DFIG protection. Along these lines, this study centers around underscoring the present status of the rotor overcurrent and DC-link overvoltage protection solutions, for example, the crowbar and its related protection circuits, fault current limiter, the reactive power injecting devices, for example, the static synchronous compensators, static var compensator, and dynamic voltage restorer.

Grid‐connected photovoltaic inverters with low‐voltage ride through for a residential‐scale system: A review

“…The FACTS arrangement connects a capacitive element at a point of common coupling (PCC) in parallel or series combination to provide reactive power to the grid during a fault event, as shown in Figure 5. 28 The static compensation (STATCOM) 29 and the static VAR compensation (SVC) 30 are the renowned FACTS techniques that use a resonant circuit or a topology switching method to connect a capacitive load at the PCC during an abnormal voltage. The FACTSdevices are accompanied by an energy storage system to maintain the nominal voltage at PCC.…”

An outlook on endangering grid security in India due to implementation challenges of low voltage ride through protection in wind turbines

“…Generation varies throughout the day and varies based on wind speed and therefore only possible to curtail the active power injection into the grid based on frequency response requirement. 66,67 The other grid related issues may arise due to planning, construction, operational and institutional. Large-scale integration will need adequate transmission, forecasting and scheduling, energy accounting, load generation balance and energy storage.…”

“…Unlike thermal power plants, renewable energy does not have any type of governor system for delivering frequency response. Generation varies throughout the day and varies based on wind speed and therefore only possible to curtail the active power injection into the grid based on frequency response requirement 66,67 . The other grid related issues may arise due to planning, construction, operational and institutional.…”

Improving fault ride through capability of induction generator‐based wind farm using static compensator during asymmetrical faults

“…They also need power electronic converters to control the output power, which is high in cost and difficult in control systems. 5 The other important issue in WECSs is the appropriate operation of the wind farm in a fault condition, commonly known as fault ride through (FRT). What makes FRT important is that if there is a fault on the grid and the wind farm is disconnected from the power grid, the balance between power generation and consumption is lost, and there is a sudden and sharp drop in power generation, which may cause blackouts.…”