Modeling of the State Space Vector PWM (SVPWM) Based STATCOM for Voltage Improvement in the Transmission Line
In the present era, the increase in population has led to the increase of load as a result the generated voltage is not equal to the received voltage. This has affected the stability of the power system. Flexible Alternating Current Transmission Devices s
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Abstract In the present era, the increase in population has led to the increase of load as a result the generated voltage is not equal to the received voltage. This has affected the stability of the power system. Flexible Alternating Current Transmission Devices shortly termed as FACTS devices came into use for better voltage regulation and stability in the power system. A Static Synchronous Compensators (STATCOM) is the most effective device among all the other FACTS devices. This paper explains about the State Space Vector Pulse Width Modulation (SVPWM) technique used for generating pulses in the STATCOM to maintain the voltage stability of transmission line in more efficient way. The proposed STATCOM model is able to compensate the voltage dip at 0.6 s transient time due to addition of load in the system. The entire project has been conducted in the MATLAB software
Keywords Static synchronous compensator (STATCOM) Point of common coupling (PCC) State space vector pulse width modulation (SVPWM) Flexible alternating current transmission system (FACTS) Voltage source converter (VSC)
1 Introduction Nowadays, the voltage stability improvements is very important in the power system. Earlier, mechanically switched shunt and series capacitors, reactors were present to increase the stability of the voltage in the power system. But, power system was not able to achieve the desired result [1]. In order to make the system R. Kumari C. Roy (&) Department of Electrical & Electronics Engineering, Sikkim Manipal Institute of Technology, Rangpo, India e-mail: [email protected] R. Kumari e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2018 A. Garg et al. (eds.), Advances in Power Systems and Energy Management, Lecture Notes in Electrical Engineering 436, https://doi.org/10.1007/978-981-10-4394-9_36
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fast, flexible, and to increase the controlling capability, FACTS devices came into use. Among various FACTS devices STATCOM has been used due to its various advantages over other FACTS device. A STATCOM works like a Voltage Source Converter (VSC). It is a power electronic device used for providing reactive power compensations to high voltage transmission networks. It also contributes for the improvement of the continuous and dynamic voltage profile and provides high efficiency in the power system [1]. In this paper, STATCOM with PI controller has been implemented. The control parameters of the PI controller play an important role in STATCOM performance [2]. There are various methods of providing pulse to the voltage source converter but the most used PWM techniques are Sinusoidal PWM technique and State Space Vector PWM (SVPWM) techniques. In this paper, SVPWM technique has been implemented due to its various advantages such as easy digital realization and better DC bus utilization as compared to the other PWM techniques [3]. This paper gives detailed explanation about the effects of the STATCOM with SVPWM technique so that it gives the desired response at the time
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