نتایج جستجو برای: sfcl

تعداد نتایج: 180  

2015
Priyanka Mahajan

In most highly developed electrical power system, there are several difficulties related from generation to distribution. Usually, power generation is located at remote area from the load center. Long transmission and distribution lines have to be constructed and maintained to meet required reliability, power quality and economic point of views. Reliable, cheap, efficient conductor is required ...

2015
N. DEVARAJAN

In this paper performance analysis of Doubly Fed Induction Generator under abnormal condition is analysed. In recent years, this series compensated transmission system will produce unwanted effect of sub synchronous resonance. Super Conducting Magnetic Energy Storage (SMES) provides an efficient damping for sub synchronous resonance that will enhance power system stability in addition to real a...

2014
Seokho Nam Woo Seung Lee Jiho Lee

Smart fault current controller (SFCC) proposed in our previous work consists of a power converter, a high temperature superconducting (HTS) DC reactor, thyristors, and a control unit [1]. SFCC can limit and control the current by adjusting firing angles of thyristors when a fault occurs. SFCC has complex structure because the HTS DC reactor generates the loss under AC. To use the DC reactor und...

2014
Mohamed M. Aly Emad A. Mohamed

One of the worst types of fault that a power system should be designed to withstand is a short circuit. Within the various types of fault current limiters, the superconducting fault current limiter (SFCL) has an extremely fast current limitation. The rapid switching action and the self-sensing nature of the superconductor make SFCLs particularly attractive in fault protection. This very fast ti...

Journal: :Journal of Microwaves, Optoelectronics and Electromagnetic Applications 2021

Superconducting Fault Current Limiter (SFCL) modules with distinct arrangements have been investigated, seeking design and performance enhancements. In this context, work aims to propose a for resistive SFCL (R-SFCL) modules, using RE-Ba-Cu-O high-temperature superconducting tapes (HTS) wound on an alternative support material. An R-SFCL bench prototype was designed 400 A 500 V. Two pieces of 2...

2016
Xiuchang Zhang Harold S. Ruiz Jianzhao Geng Boyang Shen Lin Fu Heng Zhang Tim A. Coombs

Based on conventional approaches for the integration of resistive-type superconducting fault current limiters (SFCLs) on electric distribution networks, SFCL models largely rely on the insertion of a step or exponential resistance that is determined by a predefined quenching time. In this paper, we expand the scope of the aforementioned models by considering the actual behaviour of an SFCL in t...

2013
Yu Zhao Yong Li Tapan Kumar Saha Olav Krause

Protection of radial distribution networks is widely based on coordinated inverse time overcurrent relays (OCRs) ensuring both effectiveness and selectivity. However, the integration of distributed generation (DG) into an existing distribution network not only inevitably increases fault current levels to levels that may exceed the OCR ratings, but it may also disturb the original overcurrent re...

2016
Lei Chen Hongkun Chen Jun Yang Zhengyu Shu Huiwen He Xin Shu

The modified flux-coupling-type superconducting fault current (SFCL) is a high-efficient electrical auxiliary device, whose basic function is to suppress the short-circuit current by controlling the magnetic path through a high-speed switch. In this paper, the high-speed switch is based on electromagnetic repulsion mechanism, and its conceptual design is carried out to promote the application o...

Journal: :Energies 2022

Owing to the increasing penetration level of distributed energy resources (DER) and direct current (DC) load, usage low-voltage (LVDC) systems has expanded achieve efficient operations. However, because LVDC system reaches peak fault at a faster rate than alternating (AC) system, solution that protects components is necessary maintain integrity. It required by ride-through (LVRT) DERs their int...

Journal: :Applied sciences 2023

Superconducting fault current limiters (SFCL) can be an alternative to conventional devices limiting short-circuit currents in power systems. SFCL use high-temperature superconducting tapes of the second generation (HTS 2G) SFCL, which, after reaching characteristic critical tape, go into resistive state (quenching), current. The determines moment activation SFCL. Therefore, its value should no...

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