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.

Research on the SVC Auto-Compensating Method Based on the Variable Reactor

2013 ◽  
Vol 321-324 ◽  
pp. 1414-1417 ◽  
Author(s):  
Jing Chen ◽  
Qi Jian Cheng ◽  
You Xin Yuan ◽  
Wei Yang
Keyword(s):  
Working Conditions ◽  
Power Supply ◽  
Power Supply System ◽  
Reactive Power ◽  
Theoretical Foundation ◽  
Industrial Applications ◽  
Reactive Power Compensation ◽  
Supply System ◽  
Compensation Method ◽  
Secondary Side

The objective of this work is to research on a SVC auto-compensation method to improve the power factor of the power supply system. Firstly, the principles of the reactive power compensation of FC+TCR are analyzed qualitatively. According to the deficiencies of this compensator, a novel SVC auto-compensating method based on the variable reactor is presented. The reactor controlled by anti-parallel thyristors is namely as the variable reactor in this method. The secondary-side equivalent inductance of the variable reactor is varied by adjusting the SCR firing angles. And then, the equivalent inductance of the variable reactor of the compensator branch is adjusted indirectly for compensating the corresponding reactive power after the working conditions of the load are changed. Therefore, the auto-compensating of this var compensator is realized. The auto-compensating principles of this compensator have been analyzed, and a research on the compensating parameters of this compensator is given emphatically in this paper. Finally, the essential operation steps of this SVC compensation method are given. The research of this paper has laid a theoretical foundation for this compensator in industrial applications.

Trigger Circuit Design for Series SCRs Valve Bank

2012 ◽  
Vol 468-471 ◽  
pp. 2912-2915 ◽  
Author(s):  
Li Wang ◽  
Yan Qing Pang ◽  
Zhi Ming Song ◽  
Tang Sheng Xun ◽  
Hong Yu Gao ◽  
...  
Keyword(s):  
Circuit Design ◽  
High Voltage ◽  
Simple Structure ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Pulse Transformer ◽  
Voltage Source ◽  
Switched Capacitor ◽  
Trigger Circuit ◽  
Compensation Device

This article introduces the trigger circuit of series SCRs valve and a new trigger circuit is designed for series SCRs valve of TSC. The trigger circuit is driven by voltage source and a high voltage cable is used for insulation of the pulse transformer. The trigger circuit has simple structure and a steep front of gate-current. This unit is used in 10 kV thyristor switched capacitor (TSC) reactive power compensation device, and the results verify its feasibility.

The High-Voltage Reactive Power Compensation Device Applications and Innovations

2014 ◽  
Vol 494-495 ◽  
pp. 1787-1790
Author(s):  
Jun Dong ◽  
Yan Jun Pang ◽  
Da Lin Zhang ◽  
Zheng Zhi Yu ◽  
Qing Hao Wang ◽  
...  
Keyword(s):  
High Voltage ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Innovative Technology ◽  
Development Status ◽  
Device Development ◽  
Device Applications ◽  
Compensation Device ◽  
New Generation ◽  
Application Prospects

This article briefly describes the modern power system of high-voltage reactive power compensation device development status, discusses the high voltage reactive power compensation device applications, with the traditional high-voltage reactive power compensation device matching, demonstration of a new generation SVC (Static Var Compensator) and SVG (STATCOM) advantages and application results. This paper focuses on the innovative technology in the new generation of high-voltage reactive power compensation device in the application, while a new generation of high voltage discussed reactive power compensation device application prospects.

scholarly journals Current-Limiting Soft Starting Method for a High-Voltage and High-Power Motor

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3068
Author(s):  
Yifei Wang ◽  
Kaiyang Yin ◽  
Youxin Yuan ◽  
Jing Chen
Keyword(s):  
High Voltage ◽  
Power Factor ◽  
High Power ◽  
Reactive Power ◽  
Characteristic Curve ◽  
Voltage Regulation ◽  
Reactive Power Compensation ◽  
Starting Current ◽  
Reactive Compensation ◽  
Current Limiting

Focusing on the starting problems of a high-voltage and high-power motor, such as large starting current, low power factor, waste of resources, and lack of harmonic control, this paper proposes a current-limiting soft starting method for a high-voltage and high-power motor. The method integrates functions like autotransformer voltage reduction–current limiting starting, magnetron voltage regulation–current limiting starting, and reactive power compensation during starting, and then the power filtering subsystem is turned on to filter out harmonics in power system as the starting process terminates. According to the current-limiting starting characteristic curve, the topological structure of the integrated device is established and then the functional logic switching strategy is put forward. Afterwards, the mechanisms of current-limiting starting, reactive compensation and dynamic harmonic filtering are analyzed, and the simulation and experimental evaluation are completed. In particular, the direct starting and the current-limiting are performed by developing a simulation system. In addition, a 10 kV/19,000 kW fan-loaded motor of a steel plant is chosen as the subject to verify the performance of the current-limiting soft starting method. As shown by the experimental results, the motor’s starting current is about 2 times that of its rated current, the power factor is raised to over 0.9 after the reactive power compensation, and the harmonic filter can effectively eliminate current harmonics and reduce the total harmonic distortion (THD) of supply currents.

Research on a Dynamic Reactive Power Compensation Method of Composite Power Load

2014 ◽  
Vol 602-605 ◽  
pp. 2840-2843 ◽  
Author(s):  
Qi Jian Cheng ◽  
Jing Chen ◽  
You Xin Yuan ◽  
Xue Song Zhou ◽  
Shi Jie Deng
Keyword(s):  
Topological Structure ◽  
Reactive Power ◽  
Control Method ◽  
Reactive Power Compensation ◽  
Compensation Method ◽  
Compensation Control ◽  
Power Load ◽  
Compensation Device ◽  
Reactive Power Compensator

A large number of inductive loads need the reactive power, and the amount of the reactive power compensation is different in a state of work. The traditional static reactive power compensator is difficult to meet the needs of the reactive power compensation for the composite load reactive. Therefore, a dynamic reactive power compensation method of the composite power load is proposed in this paper. The following works have been done in the study: principle of dynamic reactive power compensation control method, topological structure of dynamic reactive power compensation device, and implementation of the dynamic reactive power compensation control method.

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