Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

Abstract

Faults in electrical networks are among the key factors and sources of network disturbances. Control and automation strategies are among the key fault clearing techniques responsible for the safe operation of the system. Several researchers have revealed various constraints of control and automation strategies such as a slow dynamic response, the inability to switch the network on and off remotely, a high fault clearing time and loss minimization. For a system with wind energy technologies, if the power flow of a wind turbine is perturbed by a fault, the intermediate circuit voltage between the machine side converter and line side converter will rise to unacceptably high values due to the accumulation of energy in the DC link capacitor. To overcome the aforementioned issues, this paper used MATLAB simulations and experiments to analyze and validate the results. The results revealed that fault ride through capability with Supervisory Control and Data Acquisition (SCADA) viewer software, Active Servo software and wind sim packages are more adaptable to the variations of voltage sag, voltage swell and wind speed and avoid loss of synchronism and improve power quality. Furthermore, for protection purposes, a DC chopper and a crowbar should be incorporated into the management of excess energy during faults and a ferrite device included for the reduction of the electromagnetic field.

A Novel Fault Location Method of a 35-kV High-Reliability Distribution Network Using Wavelet Filter-S Transform

“…The modulus maximum point distribution of single frequency was selected, which was also the arrival In Figure 10, the x-axis is the sampling point and the y-axis is the frequency. The corresponding frequency can be converted according to Equation (16). The z-axis is the S transform modulus value.…”

“…Fault location can be roughly divided into the fault indicator method, injected signal tracking method, impedance method, and traveling wave method according to the principle. The traveling wave method has been widely used because of high location accuracy and little influence from external factors [16]. The traveling wave method can be roughly divided into single-ended location and double-ended location based on the number of measurement terminals.…”

A novel protection scheme for doubly fed induction generator‐based wind turbines during the fault occurrence in the rotor‐circuit

“…Nevertheless, although there are many challenging issues regarding the protection of DFIG-WT, the performed research works in this field are very limited and most of which are focused on requirements of its connection to the power system and the fault right through (FRT) problem [7,8]. According to the data reported in various research works such as [9], the failures associated with the RC which consists of various devices have the highest rate of occurrence compared to the other faults, rating in the range between 12% and 50% of total number of the DFIG-WT failures [9].…”

Augmentation of DFIG and PMSG Wind Turbines Transient Performance Using Different Fault Current Limiters

“…As the amount of wind energy penetration into existing power grids is increasing by the day, with an average forecast of 75 GW per year over the 2021-2026 period [1], it is very vital to learn new methods of stabilizing the power grids for smooth operation [1,2]. The grid requirements that are recently emerging as a guild to operate wind farms require robust voltage and frequency controls.…”