Transient Fault Current and Voltage Recovery Characteristics of Distribution Systems [includes discussion]

1952 ◽  
Vol 71 (4) ◽  
pp. 768-787
Author(s):  
AIEE Committee Report
Keyword(s):  
Distribution Systems ◽  
Fault Current ◽  
Transient Fault ◽  
Voltage Recovery

scholarly journals Protection of Sensitive Loads in Distribution Systems Using a BSFCL-DVR System

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1615
Author(s):  
Mehdi Firouzi ◽  
Saleh Mobayen ◽  
Hossein Shahbabaei Kartijkolaie ◽  
Mojtaba Nasiri ◽  
Chih-Chiang Chen
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Fault Current ◽  
Dynamic Voltage Restorer ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Bridge Type ◽  
In The Beginning

In this paper, an incorporated bridge-type superconducting fault current limiter (BSFCL) and Dynamic Voltage Restorer (DVR) is presented to improve the voltage quality and limiting fault current problems in distribution systems. In order to achieve these capabilities, the BSFCL and DVR are integrated through a common DC link as a BSFCL-DVR system. The FCL and DVR ports of the BSFCL-DVR system are located in the beginning and end of the sensitive loads’ feeder integrated to the point of common coupling (PCC) in the distribution system. At first, the principle operation of the BSFCL-DVR is discussed. Then, a control system for the BSFCL-DVR system is designed to enhance the voltage quality and limit the fault current. Eventually, the efficiency of the BSFCL-DVR system is verified through the PSCAD/EMTDC simulation.

scholarly journals A silicon carbide fault current limiter for distribution systems

2014 ◽  
Author(s):  
Yusi Liu ◽  
Chris Farnell ◽  
Hao Zhang ◽  
Andres Escobar-Mejia ◽  
H. Alan Mantooth ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Distribution Systems ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Current Limiter

scholarly journals Systematic Effectiveness Assessment Methodology for Fault Current Indicators Deployed in Distribution Systems

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2582 ◽  
Author(s):  
Jen-Hao Teng ◽  
Chia-Hung Hsieh ◽  
Shang-Wen Luan ◽  
Bo-Ren Lan ◽  
Yun-Fang Li
Keyword(s):  
Communication Network ◽  
Distribution System ◽  
Distribution Systems ◽  
Optimal Number ◽  
Battery Life ◽  
Fault Current ◽  
Failure Rates ◽  
Assessment Methodology ◽  
Actual Distribution ◽  
Effectiveness Assessment

Fault Current Indicators (FCIs) with communication interfaces have been widely used in distribution systems to reduce fault-finding time. The effectiveness of a Fault Management System (FMS) composed of FCIs greatly depends on the performance of the communication network deployed by the FCIs and the failure rates of distribution systems. The conventional techniques only focus on the issues of optimal number and location of FCIs or communication network deployment individually; therefore, the effectiveness of an FMS cannot be assessed realistically. A systematic effectiveness assessment methodology for FMS considering the performance of the communication network deployed by the FCIs and the failure rates of distribution systems is vital and is investigated in this paper. A communication evaluation platform is designed in this paper and used to acquire the field measurements of communication parameters. The communication parameters, especially the Packet Success Rate (PSR), between two adjacent FCIs are measured, and the Probability Density Function (PDF) of the PSR can be built accordingly. The effectiveness of the FMS is then assessed by stochastic analysis considering the failure rates of the distribution system and PSR PDFs between two adjacent FCIs. Due to the characteristics of easy installation, maintenance, longer battery life, lower cost, and so on of ZigBee, the ZigBee-based FCI is mainly discussed in this paper. In order to efficiently find the communication route when a fault occurs, a fast communication route tracking method is also proposed in this paper and its feasibility is demonstrated in an actual distribution system. Experimental and simulation results demonstrate the validity of the proposed systematic effectiveness assessment methodology for an FMS composed of FCIs. The proposed assessment methodology can more realistically react to the actual conditions of the FMS and therefore save on installation time and costs.

A Computational Study of the Thermal Performance of a 69 kV Solid State Current Limiter Submerged in FR3 Dielectric Coolant

2008 ◽  
Author(s):  
Ronald Warzoha ◽  
Patrick Kirby ◽  
Amy Fleischer ◽  
Mahesh Gandhi ◽  
Ashok Sundaram
Keyword(s):  
Solid State ◽  
Thermal Management ◽  
Distribution Systems ◽  
Waste Heat ◽  
Computational Study ◽  
Small Scale ◽  
Phase System ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Current Limiter

This paper presents the results of thermal modeling of a unique 69 kV 3000A Solid State Fault Current Limiter (SSFCL) developed by Silicon Power of Malvern, PA with support of EPRI. The development of the Solid State Fault Current Limiter is expected to modernize power distribution systems through the use of small-scale solid-state power devices. The use of this new design is expected to increase reliability and functionality while reducing footprint. However, as the footprint is reduced, the heat flux for the system is increased, leading to the significant possibility of device failure due to thermal excursions if the heat load is not properly managed. The high heat loading requires the use of aggressive thermal management in the form of liquid cooling of the electronics. This system features 288 kW of waste heat in the three phase system. The system is submerged in FR3 dielectric coolant and the desired thermal management system is liquid natural convection within the tank and shed to the ambient through an external finned array system. This project explores the feasibility of this system design.

Fault Position Identification for Series Compensated Lines with SSSC Based on Improved Wavelet Packet Entropy

2011 ◽  
Vol 383-390 ◽  
pp. 5200-5205
Author(s):  
Qing Liu ◽  
Yan Yan Chang ◽  
Yan Xu
Keyword(s):  
Correction Factor ◽  
Wavelet Packet ◽  
Fault Current ◽  
Distance Protection ◽  
Transient Fault ◽  
Measured Impedance ◽  
Static Synchronous Series Compensator

In this paper, the correction factor is introduced to improve the wavelet packet entropy, which is used to analyze the transient fault current of the series compensated line with Static Synchronous Series Compensator (SSSC). The results show that the wavelet packet entropy when the fault point is before SSSC is much larger than that when the fault point is after SSSC. According to this characteristic, the scheme of identifying fault position for series compensated lines with SSSC is put forward. Cooperated this scheme with the distance protection, the measured impedance of distance protection is adjusted adaptively so that the over-reaching and under-reaching of the distance protection due to SSSC can be eliminated effectively.

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