A Method to Estimate Voltage Sag Caused by Transformer Excitation Inrush Current

Jin Hao Wang; Chao Ying Yang; Guang Qi Mu; Xiao Qin Wu

doi:10.4028/www.scientific.net/AMM.494-495.1418

Paper Titles

A New Sliding Mode Observer for the Sensorless Control of a PMLSM
p.1401

Application of Random SVPWM Technique
p.1405

Research on the NPC Three-Level Inverter Fault Feature Extraction Method Based on Wavelet Analysis
p.1410

Fuzzy Recursive Integral PI Control for Three-Phase Four-Wire Shunt Active Power Filter
p.1414

A Method to Estimate Voltage Sag Caused by Transformer Excitation Inrush Current
p.1418

Novel High Voltage Switch for Damped Oscillatory Voltage Testing System
p.1424

Development of Damped AC Voltage Generator for the Partial Discharge Detection of Distribution Power Cables
p.1428

A Technique for TEV-Based Detection and Location of Partial Discharges on MV Metal-Clad Switchgears
p.1432

Simulation of Partial Discharge Propagation Characteristics in XLPE Cables and Joints
p.1436

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 494-495A Method to Estimate Voltage Sag Caused by...

A Method to Estimate Voltage Sag Caused by Transformer Excitation Inrush Current

Abstract:

Due to excitation inrush current, no-load transformer accesses system can cause different degree of voltage sag. Therefore presents a method to estimate voltage sag caused by closing no-load transformer. Firstly, accord to the point of saturation magnetic flux and transformer core general single value curve equation to establish general nonlinear magnetization curve. Use the linear features of saturated magnetization curve segment to estimate the maximum inrush current and calculate the maximum depth of voltage sag. According to the magnetic flux decay time to estimate the duration of voltage sag. Simulate closing no-load transformer in a 10kV distribution network, and compare the simulated result with the calculated result. The results show that the proposed method is validity and accuracy.

You might also be interested in these eBooks

Current Development of Mechanical Engineering and Energy

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 494-495)

Pages:

1418-1423

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.494-495.1418

Citation:

Cite this paper

Online since:

February 2014

Authors:

Jin Hao Wang*, Chao Ying Yang, Guang Qi Mu, Xiao Qin Wu

Keywords:

Inrush Current, No-Load Transformer, Voltage Sag

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Zhu Yi. Influence and Control of Voltage Dip to Sensitive Electrical Equipment. Electrical Engineering， Vol. 7 (2007), pp.76-81.

Google Scholar

[2] Xiao Xiangning. The power quality analysis and control. Beijing: China electric power press, (2002).

Google Scholar

[3] Xiao Xiangning ，Tao Shun. Voltage Sags Types Under Different Grounding Modes of Neutral and Their Propagation：PartⅠ. Transactions of China Electrotechnical Society，Vol. 22（9）(2007), pp.143-147, 153.

Google Scholar

[4] Math H J Bollen. Understanding power quality problems, voltage sags and interruption. New York: IEEE Press，(2000), in Press.

Google Scholar

[5] Hazlie Mokhlis，Haiyu Li. Non-linear representation of voltage sag profiles for fault location in distribution networks. Electrical Power and Energy Systems, Vol. 33（1）(2010), pp.124-130.

DOI: 10.1016/j.ijepes.2010.06.020

Google Scholar

[6] Lin Jiming，Wang Xiaogang，Ban Liangeng，et al．Resonance overvoltage caused by energizing no-load transformer in 1000kV AC transmission system．Power System Technology，Vol. 31(2) (2007), pp.5-7.

Google Scholar

[7] Tenschert W. Fault location using fault distance measurement of digital relays. in Proc. 12th International Conference on Electricity Distribution , CIRED, vol. 4(1993), p.4. 20/1-4. 20/4.

Google Scholar

[8] Weng Hanli，Lin Xiangning，Analysis of complex electromagnetic transient leading to the mal-operation of power transformer differential protection．Proceedings of the CSEE, Vol. 29(13) (2009), pp.65-66.

Google Scholar

[9] Li Xiaoping，Wen Xishan，Chen Cixuan，et al. Study of Nonlinear Characteristic Curve for the Core of Transformer with Magnetic Coupling. High Voltage Engineering, Vol. 31（12) (2005), pp.9-11.

DOI: 10.1109/emczur.2006.214913

Google Scholar