Short-circuit impedance measurement

K.O.H. Pedersen; A.H. Nielsen; N.K. Poulsen

doi:10.1049/ip-gtd:20030193

Short-circuit impedance measurement

IEE Proceedings - Generation Transmission and Distribution ◽

10.1049/ip-gtd:20030193 ◽

2003 ◽

Vol 150 (2) ◽

pp. 169 ◽

Cited By ~ 33

Author(s):

K.O.H. Pedersen ◽

A.H. Nielsen ◽

N.K. Poulsen

Keyword(s):

Short Circuit ◽

Impedance Measurement ◽

Circuit Impedance

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Frequency response analysis and short-circuit impedance measurement in detection of winding deformation within power transformers

IEEE Electrical Insulation Magazine ◽

10.1109/mei.2013.6507412 ◽

2013 ◽

Vol 29 (3) ◽

pp. 33-40 ◽

Cited By ~ 98

Author(s):

Mehdi Bagheri ◽

Mohammad Naderi ◽

Trevor Blackburn ◽

Toan Phung

Keyword(s):

Frequency Response ◽

Short Circuit ◽

Impedance Measurement ◽

Power Transformers ◽

Response Analysis ◽

Frequency Response Analysis ◽

Winding Deformation ◽

Circuit Impedance

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A practical example of power transformer unit winding condition assessment by means of short-circuit impedance measurement

2009 IEEE Bucharest PowerTech ◽

10.1109/ptc.2009.5282097 ◽

2009 ◽

Cited By ~ 4

Author(s):

Traian Chiulan ◽

Brandusa Pantelimon

Keyword(s):

Power Transformer ◽

Short Circuit ◽

Impedance Measurement ◽

Condition Assessment ◽

Circuit Impedance

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FRA vs. short circuit impedance measurement in detection of mechanical defects within large power transformer

2012 IEEE International Symposium on Electrical Insulation ◽

10.1109/elinsl.2012.6251477 ◽

2012 ◽

Cited By ~ 24

Author(s):

Mehdi Bagheri ◽

Mohammad Salay Naderi ◽

Trevor Blackburn ◽

Toan Phung

Keyword(s):

Power Transformer ◽

Short Circuit ◽

Impedance Measurement ◽

Large Power ◽

Circuit Impedance

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Apparatus and Procedure for Calculating Short-Circuit Impedance to Determine Bus Fault Currents and Smart Inverter Settings

2020 IEEE Power & Energy Society General Meeting (PESGM) ◽

10.1109/pesgm41954.2020.9281696 ◽

2020 ◽

Author(s):

Matthew Rylander

Keyword(s):

Short Circuit ◽

Fault Currents ◽

Circuit Impedance

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Impact of short-circuit impedance and tap changing method selection on the key-design parameters of core-form power transformers

Electrical Engineering ◽

10.1007/s00202-017-0642-z ◽

2017 ◽

Vol 100 (3) ◽

pp. 1631-1637 ◽

Cited By ~ 2

Author(s):

Tamás Orosz ◽

Zoltán Ádám Tamus

Keyword(s):

Short Circuit ◽

Power Transformers ◽

Design Parameters ◽

Method Selection ◽

Circuit Impedance

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Study on Characteristic Parameters of Short-Circuit Impedance for a Four-Winding Inductive Filtering Transformer in Power System Supplying Nonlinear Loads

IEEE Access ◽

10.1109/access.2019.2930829 ◽

2019 ◽

Vol 7 ◽

pp. 115273-115280 ◽

Cited By ~ 1

Author(s):

Zhao Huang ◽

Yuehui Chen ◽

Saimei Shi ◽

Longfu Luo

Keyword(s):

Power System ◽

Short Circuit ◽

Characteristic Parameters ◽

Nonlinear Loads ◽

Circuit Impedance

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Study on Short-Circuit Impedance Characteristics in DN Traction Electric Lines

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/310/3/032053 ◽

2019 ◽

Vol 310 ◽

pp. 032053

Author(s):

Yang Liu ◽

Zijian Yin ◽

Qiang Gao ◽

Xingjun Tian ◽

Xiaoxuan Yang

Keyword(s):

Short Circuit ◽

Impedance Characteristics ◽

Circuit Impedance

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Fault Loop Impedance Measurement in Circuits Fed by UPS and Principle of Safety Protection

Sustainability ◽

10.3390/su122310126 ◽

2020 ◽

Vol 12 (23) ◽

pp. 10126

Author(s):

Jacek Katarzyński ◽

Marek Olesz

Keyword(s):

Power Supply ◽

Short Circuit ◽

Impedance Measurement ◽

Reference Value ◽

Short Circuit Current ◽

Uninterruptible Power Supply ◽

Safety Protection ◽

Uninterruptible Power ◽

Definition Of ◽

Electrical Installation

This paper indicates a significant problem of uncertainty of fault loop impedance (FLI) measurement in circuits powered from uninterruptible power supply (UPS) (double-conversion AC-DC-AC). The correctly determined value of this impedance, related to the short-circuit current disconnection time and to the reference value, is one of the most important elements that determines the approval of an electrical installation and its receivers for operation. To define the principles of FLI measurement, several hundred measurements of the short-circuit loop impedance in the circuits fed by the UPS, in various UPS operation modes and with various FLI instruments, were made, which allowed for the definition of measurement rules that reduce the error in assessing the effectiveness of protection against electric shock by automatic disconnection of supply. Based on the analysis of voltage and current waveforms recorded during the real short-circuit tests in the circuit fed by the UPS, a proprietary algorithm for determining the short-circuit loop impedance has been proposed.

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