Reactive Power Compensation in Industrial Grid via High-power Adjustable Speed Drives with Medium Voltage 3L-NPC BtB converters

2017 ◽  
Vol 8 (4) ◽  
pp. 1455
Author(s):  
Radionov A.A., A. A. ◽  
Gasiyarov Vadim R. ◽  
Maklakov Alexander S. ◽  
Maklakova Ekaterina A.
Keyword(s):  
High Power ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
New Method ◽  
Adjustable Speed Drives ◽  
Iron And Steel ◽  
Medium Voltage ◽  
Specialized Equipment ◽  
Adjustable Speed ◽  
Iron And Steel Works

The objective of this study is to develop and research a new method of reactive power compensation in industrial grid via high-power adjustable speed drives (HP ASDs) with medium voltage (MV) three level neutral point clamped back-to-back (3L-NPC BtB) converters. The article is concerned with the mathematical description, control system designing and obtaining of experimental results. An important advantage of the new method is that specialized equipment is not necessary for its implementation. The analysis of our experimental research shows that the developed reactive power compensation method has been successfully applied for main HP ASD of plate mill rolling state 5000 (Magnitogorsk Iron and Steel Works, PJSC). Some ways for future industrial application prospects and improvements of the designed method are outlined in the conclusion of the paper.

scholarly journals An Effective Reactive Power Compensation Method and a Modern Metaheuristic Algorithm for Loss Reduction in Distribution Power Networks

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-21
Author(s):  
Thang Trung Nguyen ◽  
Kim Hung Le ◽  
Tan Minh Phan ◽  
Minh Quan Duong
Keyword(s):  
Power Loss ◽  
Distribution Systems ◽  
Reactive Power ◽  
Reducing Power ◽  
Reactive Power Compensation ◽  
Compensation Method ◽  
New Method ◽  
Total Power ◽  
Loss Reduction ◽  
Power Networks

In this paper, a new method of reactive power compensation is proposed for reducing power loss of distribution power networks. The new method is the combination of local compensation at each load and distribution line compensation. In the method, local capacitors at each load are determined to increase power factor of load to an expected value first and then a number of capacitors are placed in distribution lines with two factors, location and capacity by using the three applied methods. Particle swarm optimization (PSO), parasitism predation algorithm (PPA), and tunicate swarm algorithm (TSA) are applied for the proposed method on four distribution systems with 15, 33, 69, and 85 buses. The comparisons of results with previous methods indicate that the three applied methods can reach higher loss reduction for all study cases. TSA can reach loss reduction more effectively than others by 19.4%, 0.5%, 7.9%, and 10.76% for the four distribution systems, respectively. The most important emphasis is that PSO, which was considered to be of low effectiveness in previous studies, can reach much better loss than approximately all previous methods thank to the proposed compensation method. PSO also reached better loss reduction than others by 18.97%, 0.4%, 7.73%, and 10.21%, respectively. Consequently, it is recommended that the proposed compensation method is useful for distribution systems in minimizing total power loss and TSA can be selected a new and powerful method for the problem.

A Dynamic Reactive Power Compensation Method of Super High-Power and High-Voltage Motor

2014 ◽  
Vol 602-605 ◽  
pp. 2828-2831 ◽  
Author(s):  
Yi Fei Wang ◽  
You Xin Yuan ◽  
Jing Chen ◽  
Qi Jian Cheng
Keyword(s):  
High Voltage ◽  
High Power ◽  
Reactive Power ◽  
Industrial Applications ◽  
Reactive Power Compensation ◽  
Compensation Method ◽  
The Novel ◽  
Parameter Setting ◽  
Compensation Device ◽  
Novel Design

According to the low power factor and low running efficiency, a dynamic reactive power compensation method of the super high-power and high-voltage motor is proposed in this paper. The following works have been done in the study: topology of the dynamic reactive power compensation device; principle of the dynamic reactive power compensation method; control system of the dynamic reactive power compensation device; implementation of the dynamic reactive power compensation method. The amount of reactive power compensation can be adjusted smoothly and dynamically in the process of the super high-power and high-voltage motor soft-starting. The research of this paper has laid a theoretical foundation for this compensator in industrial applications. The novel design is characterized by flexible parameter setting, excellent soft starting performance of the super high-power and high-voltage motor and bright prospect in application.

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