Designing Static VAr Compensator capacity to enhance power quality in electric arc furnaces

SIMULATION ◽  
2017 ◽  
Vol 93 (6) ◽  
pp. 515-525 ◽  
Author(s):  
Mohammad Reza Asban ◽  
Jamshid Aghaei ◽  
Taher Niknam ◽  
Mohammad Amin Akbari
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Electric Arc ◽  
Active Power ◽  
Static Var Compensator ◽  
Power Functions ◽  
Voltage Fluctuations ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Electro Magnetic

This paper introduces a method for reducing damages arising from voltage fluctuations, voltage flicker, imbalance in the three-phase and power factor reduction caused by electric arc furnaces. A novel equation is defined to calculate the susceptance values of the static var compensator control system, the active power functions of phase load as well as the reactive power ones that have been used to suppress the voltage fluctuation. By compensating the impulsive part of active power component in the impulsive loads, not only can we reduce voltage fluctuations, flicker effects, balance the system and increase the power factor, but also voltage stabilization can be directly controlled. By studying this method and simulating on Electro-Magnetic Transients Program (EMTP) software, we can see that, according to the allowable flicker limit, a compensation method can balance the system, increase power factor and resolve the problem of voltage fluctuations and flicker.

Reactive Power Compensation for Unbalanced Fluctuating Loads by Using Two-Dimensional Space Vector and a Static Var Compensator

2014 ◽  
Vol 533 ◽  
pp. 397-400 ◽  
Author(s):  
Chi Jui Wu ◽  
Yu Wei Liu ◽  
Shou Chien Huang
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Dimensional Space ◽  
Measurement Data ◽  
Power Source ◽  
Active Power ◽  
Two Dimensional ◽  
Static Var Compensator ◽  
Space Vector ◽  
Three Phase

To modify the power factor and balance the three-phase currents simultaneously, this paper proposes the instantaneous compensator to calculate the compensation current. The instantaneous compensator utilizes two-dimensional instantaneous space vector and setting the active power as a constant for each cycle which can improve power quality effectively. Moreover, the instantaneous compensator requires an independent power source, whose capacity can be reduce by using a static var compensator (SVC). An SVC does not interfere with the capability of the instantaneous compensator. Field measurement data were analyzed. Simulation results confirmed the feasibility of correcting the power factor and balancing load currents simultaneously using the proposed method.

New reactive power calculation method for electric arc furnaces

Measurement ◽  
2016 ◽  
Vol 81 ◽  
pp. 251-263 ◽  
Author(s):  
Haidar Samet ◽  
Iman Masoudipour ◽  
Mostafa Parniani
Keyword(s):  
Calculation Method ◽  
Reactive Power ◽  
Electric Arc ◽  
Power Calculation ◽  
Electric Arc Furnaces ◽  
Arc Furnaces
Sign in / Sign up

Export Citation Format

Share Document