Performance of LR-type solid-state fault current limiter in improving power quality and transient stability of power network with wind turbine generators

Photovoltaic (PV) hot-spots are considered as one of the main reliability issues for PV modules.Although PV modules are capable to tolerate over-temperature, the hot-spots can lead to accelerated aging and, sometimes, to sudden failure with possible risk to fire. The commonpractise for mitigating this phenomenon is the adoption of the conventional bypass diode circuit, yet, this method does not guarantee a decrease in the temperature of hot-spotted solar cell. Therefore, in this paper, we present the development of a new current limiter circuit that is capable of mitigating the current flow of PV modules affected by mismatch conditions including partial shading and hot-spotting phenomenon. The foundation of the proposed circuit is fundamentally based on an input buffer which allows high impedance input voltages, and an operational amplifier circuit which controls the current flow of an integrated MOSFETs.Hence, to allow the control of the amount of current passing though mismatched PV substrings, and therefore, increase the output power generation. Detailed circuit simulations and multiple experiments are presented to evidence the capability of the circuit. In contrast, the average dissipated power of the circuit is limited to 0.53 W.

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“…The standard current limit operation [20] consists of a current sensor, control circuit and a pass transistor. As shown in Fig.…”

Section: Current-limiter Circuit Implementation -Proposed Methodsmentioning

confidence: 99%

Current limiter circuit to avoid photovoltaic mismatch conditions including hot-spots and shading

Dhimish

Badran

2020

Renewable Energy

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“…Yet, in the case when a fault develops in system, fault current is added to fault point from all inter-connected parts, limiting the inter-connection to specific level so that fault current might be kept within breaking capacity of circuit breakers. To improve reliability and stability of interconnected power systems, FCLs can be used [39] . Application of SFCLs was described [40] for limiting fault current and enhancing active distribution network stability through lowering influence upon the circuit breaker.…”

Section: Case2: Application Of Sfcls In Improving Power System Reliab...mentioning

confidence: 99%

A Comprehensive Review for Application of Fault Current Limiters in Power Systems

2023

IJSER

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The integration regarding various power electronic devices has led to an increase in the complexity of power systems. Limiting the fault currents is crucial for protecting these systems, the augmentation of fault reliability, and the stability. Many Faults Current Limiters (FCLs) were used in power systems because they quickly and effectively fault current limiters. The presented work gives a thorough literature review regarding the use of various FCL types in the power systems. The non-superconducting and superconducting FCL applications have been divided into five categories: (a) application in transmission, distribution and generation networks; (b) applications in the systems of alternating current (AC)/direct current (DC); (c) applications in the integration of renewable sources of energy; (d) applications in the distributed generation (DG); (e) applications for improving stability, reliability, and fault ride through capabilities. With examples of their practical implementation in various nations, impact, modeling, and control approaches of various FCLs in the power systems have been shown. With the alteration of its structures, appropriate control design, and optimal placement recommendations have been given in order to enhance performance regarding FCLs in the power systems. In order to incorporate the continuing research advances in practical systems, industry and researchers working on power system stability concerns can benefit greatly from this study.

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“…The non-superconducting bridge-type fault current limiter (BFCL) is a novel technology having promising competency to improve the dynamic stability of wind farms and power grids by inserting sizeable impedance during the inception of disturbances in the system [40][41][42][43][44][45]. However, determining the size of impedance of BFCL to restrict the fault current of DFIG wind-based HVDC systems is a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Fault Ride through Capability Augmentation of a DFIG-Based Wind Integrated VSC-HVDC System with Non-Superconducting Fault Current Limiter

et al. 2019

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This paper proposes a non-superconducting bridge-type fault current limiter (BFCL) as a potential solution to the fault problems of doubly fed induction generator (DFIG) integrated voltage source converter high-voltage DC (VSC-HVDC) transmission systems. As the VSC-HVDC and DFIG systems are vulnerable to AC/DC faults, a BFCL controller is developed to insert sizeable impedance during the inception of system disturbances. In the proposed control scheme, constant capacitor voltage is maintained by the stator VSC (SVSC) controller, while current extraction or injection is achieved by rotor VSC (RVSC) controller. Current control mode-based active and reactive power controllers for an HVDC system are developed. Balanced and different unbalanced faults are applied in the system to show the effectiveness of the proposed BFCL solution. A DFIG wind-based VSC-HVDC system, BFCL, and their controllers are implemented in a real time digital simulator (RTDS). The performance of the proposed BFCL control strategy in DFIG-based VSC-HVDC system is compared with a series dynamic braking resistor (SDBR). Comparative RTDS implementation results show that the proposed BFCL control strategy is very efficient in improving system fault ride through (FRT) capability and outperforms SDBR in all cases considered.

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Performance of LR-type solid-state fault current limiter in improving power quality and transient stability of power network with wind turbine generators

Cited by 19 publications

References 25 publications

Current limiter circuit to avoid photovoltaic mismatch conditions including hot-spots and shading

Current limiter circuit to avoid photovoltaic mismatch conditions including hot-spots and shading

A Comprehensive Review for Application of Fault Current Limiters in Power Systems

Fault Ride through Capability Augmentation of a DFIG-Based Wind Integrated VSC-HVDC System with Non-Superconducting Fault Current Limiter

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