scholarly journals The Application of MSVC Reactive Power Compensation Device to the High Voltage Power Supply of Coal Mine

2008 ◽  
Vol 2 (4) ◽  
Author(s):  
Zhenbao Zhu ◽  
Rui Tian
Keyword(s):  
High Voltage ◽  
Coal Mine ◽  
Power Supply ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
High Voltage Power Supply ◽  
Compensation Device

scholarly journals Method for improving performance of devices for adjustable reactive power compensation

2019 ◽  
Vol 110 ◽  
pp. 01010
Author(s):  
Vasiliy Cheremisin ◽  
Andrey Nikonov
Keyword(s):  
Power Supply ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Point Selection ◽  
Traction Power Supply System ◽  
Current Voltage ◽  
Compensation Device ◽  
Traction Power Supply ◽  
The Relationship ◽  
Traction Power

The article presents a method for selecting the parameters of the current-voltage characteristics of adjustable reactive power compensation devices used at sectioning stations of railway sections electrified by alternating current with a voltage of 27.5 kV. This technique is based on the experience of operating two types of devices in the traction power supply system. Power control of these devices is implemented by the voltage level at the switching point. Selection of the setpoint voltage and slope characteristics was done. The developed method allows increasing the efficiency of devices by eliminating the voltage losses on the active component of traction loads. That will reduce the loss of electricity in the system of traction power supply. Changing the parameters of the characteristics will increase the relationship between the reactive power consumed in the zone and the voltage measured by the devices. Following the results of the formation of the methodology, an example of the choice of characteristics for a real compensation device is presented.

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.

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.

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 Reactive Power Compensation for Non-Traction Railway Consumers

2020 ◽  
Vol 64 (188) ◽  
pp. 129-135
Author(s):  
Andrii M. Mukha ◽  
Oleh I. Bondarr
Keyword(s):  
Power Supply ◽  
Reactive Power ◽  
Voltage Drop ◽  
Distribution Networks ◽  
Reactive Power Compensation ◽  
Traction Current ◽  
Power Factor Corrector ◽  
Compensation Device ◽  
Traction Power Supply ◽  
Traction Power

This paper deals with the problems of power supply efficiency for non-traction railway customers. Unlike public distribution networks, the non-traction power supply network is within the zone of influence of electromagnetic fields and the conductive influence of the distorted traction current. As a result, poor power quality and additional losses are typical for non-traction railway networks. Subsequently, conflicts due to the low quality of electricity may arise between the railway and its customers powered by the distribution networks of the railway. The influence of a reactive power compensation device on the voltage drop in a non-traction power line is investigated in the article. The implementation of reactive power compensation allows voltage losses during its transmission to the final consumer to be reduced by almost 5% and electricity losses by 3%. Keywords: non-traction consumer, power factor corrector, reactive power compensator, graph of electric network, nodal analysis

Research on the Intelligent and Strong High-Voltage Power Supply System of Hu Sheng Coal Mine

2013 ◽  
Vol 401-403 ◽  
pp. 1747-1750
Author(s):  
Zhi Jia Li ◽  
Yan Wen Wang ◽  
Ning Song ◽  
Zhi Jie Wang ◽  
Bo Li
Keyword(s):  
High Voltage ◽  
Coal Mine ◽  
Power Supply ◽  
Dynamic Process ◽  
Power Supply System ◽  
Supply System ◽  
Network System ◽  
High Voltage Power Supply ◽  
Coal Power ◽  
Pulse Polarity

The optimization program of intelligent and strong power supply system in coal mine is put forward on the basis of the Hu Sheng coal power supply system status. It achieves intelligent and integrated protection and real time monitoring dynamic process of supply network system based on WAMS; at the same time it achieves rapidity and selectivity of leakage protection based on the principle of pulse-polarity and RE identification method. And the program can prevent grade-skip trip, improve the mobility and reliability of mine supply system.

Hardware Design of Monitoring and Warning System for Coal Mine High-Voltage Power Supply Network

2011 ◽  
Vol 271-273 ◽  
pp. 1015-1019 ◽  
Author(s):  
Qiao Lian Wang ◽  
Wei Liu ◽  
Cai Xia Gao ◽  
Fu Zhong Wang
Keyword(s):  
High Voltage ◽  
Coal Mine ◽  
Power Supply ◽  
Power Supply System ◽  
Warning System ◽  
Coal Industry ◽  
Supply System ◽  
High Voltage Power Supply ◽  
Safety Production ◽  
Hardware Configuration

In order to ensure the safety production of coal industry and improve the security of coal mine power supply system, CAN bus based monitoring and warning system for coal mine high-voltage power supply system is designed. The design requirements and the hardware configuration and its implementation of monitoring and warning system are particularly introduced, including the construction of communication network, the design of monitoring master station, the design of communication tributary station and so on. The practice shows that this system can ensure the security of coal mine power supply system.

Research on Centralized Short-Circuit and Leakage Protection for High-Voltage System of Underground Central Substation

2014 ◽  
Vol 494-495 ◽  
pp. 1753-1757
Author(s):  
Yan Gao ◽  
Feng Lin Ma ◽  
Guang Zhuai Dong ◽  
Hai Long Xing
Keyword(s):  
High Voltage ◽  
Coal Mine ◽  
Power Supply ◽  
Power Supply System ◽  
Short Circuit ◽  
Relay Protection ◽  
Supply System ◽  
High Voltage Power Supply ◽  
Line Selection ◽  
Longitudinal Differential Protection

According to the problems which are relay protection is difficult to adjust and when line fault occurs it will easily get override trip in the underground 6 kV power supply system in Gu Shu-yuan Coal Mine. This paper presents a centralized selective short circuit and leakage protection system. Which focuses on the analysis of the short circuit longitudinal differential protection, based on pattern recognition method of single-phase earth leakage protection principle, and completes the rapidity and selectivity of the leakage fault line selection . Through the simulation, experimental and field operation shows that the schemes can effectively improve the reliability and safety of high voltage power supply system in Gu Shu-yuan Coal Mine ,it also establishes the necessary foundation of the goal of "network relay protection" in high voltage power supply system for in China.

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