Parallel resonance type fault current limiting circuit breaker

Abstract

The main goal of this study is introducing a novel fault current limiter based on parallel resonance structure (PRFCL) for high voltage application. During normal mode, the PRFCL reactor is short-circuited via a rectifier bridge DC output voltage and LC resonance tank shows negligible impedance in the line. During a fault, the rectifier bridge switches are turned off, so that the parallel resonance LC tank connects to the line with high impedance. This impedance of the resonance structure can limit the fault current, successfully. It is shown that the suggested PRFCL can act as a breaker and opens the line during the fault period. In order to show the suggested PRFCL abilities, MATLAB software is used to simulate the normal and fault cases. In addition, a scale-down prototype is implemented to confirm the simulation results. The comparative study shows that PRFCL has acceptable performance in normal and current limiting operation modes.

A New Multifunctional Protection System for Reducing Fault Current, Ferroresonance Overvoltage, and Voltage Fluctuations in Power Networks

“…[30], the proposed FCL using a paralleled resistor and injected in series into the circuit shows a superior performance from accuracy and response speed viewpoints. [17,36]. e simulation results obtained by using the proposed system when operating in the FCL mode can be compared with those given by the competitors.…”

“…According to the results shown in Figure 23, the proposed system limits the fault current at the rated value while Ref. [17] without protection system with protection system…”

“…The proposed system (sag) [12] The proposed system (swell) [36] 0.9 0.95 structure and Ref. [17] are completely different. e former puts a parallel RL circuit in series with the line while the later inserts a parallel LC resonance tank in series with the line.…”

“…Dynamic voltage recovery (DVR) is a device that has the ability to manage voltage unbalances, compensate voltage swell/sag, reduce total harmonic distortion (THD) in the load voltage [9][10][11], correct the power factor, and control the reactive power in the power system [12][13][14][15][16]. On the other hand, the power system is continuously subject to short circuit currents up to several times of nominal level that pass through the lines and equipment, and impose severe voltage drops to the network [17]. Using power electronic switches, a fault current limiter (FCL) can manage the fault current by injecting a series impedance into the line [18].…”

Multi-resistor BFCL for FRT capability improvement of DFIG-based wind farm

“…Since the capacity of RSC is 25–30% of the DFIG power rated, it cannot produce enough rotor voltage to counteract the stator voltage drop during severe voltage sag and needs the hardware protection scheme to cope with this problem [11 ]. In literature, several hardware schemes have been proposed and documented to meet the FRT requirement of the DFIG, which can be classified as (i) parallel reactive power compensation controllers include static synchronous compensator and static var compensator [12 ], (ii) dynamic voltage restorer [13 ], (iii) unified inter‐phase power controller [14, 15 ], (iv) series dynamic resistor [16, 17 ], (v) energy storage system [18 ], (vi) fault current limiters (FCLs) [19–41 ]. FCLs have been recognised as an attractive protection device in power system, which not only limits the magnitude of fault current [19–25 ], but also improves the power quality [26–28 ], the transient recovery voltage of circuit breaker [29, 30 ], and the system stability [31 ].…”