Elimination of chaotic ferroresonance in power transformer by ISFCL

Smart solid‐state ferroresonance limiter for voltage transformers application: principle and test results

“…The simulation and experimental results of the suggested solid state fault current limiter (SSFCL) show its superior advantages over other limiting methods [34–36]. In these references, the effect of the saturated core FCL and MOV on the control of ferroresonance over‐voltages have been discussed but these limiters have low‐speed performance because they employ control system in the limiter structure to detect the ferroresonance and control systems need considerable time to detect ferroresonance.…”

“…Controlling the operation time of the CB can restrict the ferroresonance because this phenomenon is sensitive to the breaker operation time. Fault current limiters (FCLs) are devices which can control the fault current in the power systems [33–35]. There are many kinds of FCLs such as power electronic‐based FCLs, resonance‐based FCLs, saturated core FCLs, and superconductive FCLs.…”

“…There are many kinds of FCLs such as power electronic‐based FCLs, resonance‐based FCLs, saturated core FCLs, and superconductive FCLs. Recently, these devices have been used for ferroresonance cancellation in power system [35, 36]. In [37], a virtual impedance comprehensive control strategy is proposed for the controllably inductive power filtering system with a new filtering mechanism.…”

Dual function ferroresonance and fault current limiter based on DC reactor

“…The simulation and experimental results of the suggested DRFFCL show its superior advantages over other limiting methods [15–18]. In these references, the effect of the saturated core FCL and metal oxide varistor on the control of ferroresonance overvoltage have been discussed.…”

“…Ferroresonance in the power systems has been widely studied and some solutions have been addressed to control these non‐linear oscillations. Using damping resistor [15], circuit breaker (CB) accurate modelling [16], connecting metal–oxide varistor in parallel with the transformers terminals [17], accurate magnetic core modelling of transformers [18], using control theories to avoid the ferroresonance occurrence [19–21] and connecting power electronic equipments in series with the transmission lines [22] are some of the newly suggested schemes for controlling the ferroresonance phenomenon in the power systems. Though, the DC reactor‐based fault current limiters have been widely studied to control the fault current amplitude [23–26], but the effect of the DC reactor on the ferroresonance phenomenon has not been studied yet.…”