Improvement of power quality by using advanced reactive power compensation

In the same feeder, it will decline the power quality of power supply when the quality is poor at load side which can cause other equipments malfunction even damage devices. Therefore, a reactive power compensation method is suggested to improve the power quality of the electric arc furnace in a distribution power system. Both the static var compensator (SVC) and an active filter can modify power factor and balance three phase currents simultaneously. The active filter can solve the problem of instantaneous state of an SVC. And then, an SVC can reduce power quantity of the active filter. Finally, field measurement data in a metal factory were analyzed. Simulation results confirmed the feasibility of correcting the power factor and balancing load currents simultaneously using the proposed method.

[1]  Timothy J. E. Miller,et al.  Reactive Power Control In Electric Systems , 1982 .

[2]  Tang Guo-qing,et al.  A new SVC control strategy for voltage flicker mitigation and integrated compensation to electric arc furnace , 2008, 2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies.

[3]  Chi-Jui Wu,et al.  Improvement of Power Quality by Using Advanced Reactive Power Compensation , 2018, IEEE Transactions on Industry Applications.

[4]  Julia Frankfurter,et al.  Reactive Power Control In Electric Systems , 2016 .

[5]  F. Renovich,et al.  Reactive-power compensation for voltage control at resistance welders , 2005, IEEE Transactions on Industry Applications.

[6]  Chi-Jui Wu,et al.  Reactive power compensation and load balancing for unbalanced three-phase four-wire system by a combined system of an SVC and a series active filter , 2000 .

[7]  Chi Jui Wu,et al.  Reactive Power Compensation for Unbalanced Fluctuating Loads by Using Two-Dimensional Instantaneous Space Vector Approach , 2013 .

[8]  Chi-Jui Wu,et al.  Investigation of DC electric arc furnace average power factor calculation using IEEE standard 1459 , 2003, 2003 IEEE PES Transmission and Distribution Conference and Exposition (IEEE Cat. No.03CH37495).

[9]  Po-Yi Huang,et al.  Electric Arc Furnace Voltage Flicker Analysis and Prediction , 2011, IEEE Transactions on Instrumentation and Measurement.

[10]  K. S. Moon,et al.  Coordination of an SVC with a ULTC reserving compensation margin for emergency control , 1999, Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351).

[11]  Jie Zhou,et al.  Stock Price Forecasting by Combining News Mining and Time Series Analysis , 2009, 2009 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology.

[12]  Chi Jui Wu,et al.  Reactive Power Compensation for Unbalanced Fluctuating Loads by Using Two-Dimensional Space Vector and a Static Var Compensator , 2014 .

[13]  M. Farsadi,et al.  Control of an SVC for the load balancing and power factor correction with a new algorithm based on the power analysis , 2010, 2010 First Power Quality Conferance.

[14]  Yongsug Suh,et al.  A power conversion system for ac furnace with enhanced arc stability , 2009 .

[15]  T. Tanaka,et al.  A new definition of instantaneous active-reactive current and power based on instantaneous space vectors on polar coordinates in three-phase circuits , 1996 .

[16]  Mahmood Joorabian,et al.  Voltage flicker compensation using STATCOM , 2009, 2009 4th IEEE Conference on Industrial Electronics and Applications.

[17]  Grzegorz Wiczynski.  Analysis of Voltage Fluctuations in Power Networks , 2008, IEEE Transactions on Instrumentation and Measurement.

[18]  Abbas Shoulaie,et al.  Reduction of undesired harmonic components in a steel industrial plant with DC electric arc furnaces , 2011, 2011 2nd Power Electronics, Drive Systems and Technologies Conference.