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 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.

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.

Study on Preventing Override Trip System for High-Voltage Power Grid of Coal Mine Underground Based on the EtherCAT

2013 ◽  
Vol 273 ◽  
pp. 389-393
Author(s):  
Yu Mei Wang ◽  
Xu Yang ◽  
Hao Zhang
Keyword(s):  
High Voltage ◽  
Coal Mine ◽  
Power Supply ◽  
Power Supply System ◽  
Short Circuit ◽  
Power Grid ◽  
Supply System ◽  
Quality Requirements ◽  
Master Station ◽  
Short Circuit Fault

When the power supply system for coal mine underground take place a short circuit fault, multilevel switch often respond at the same time. And the existing comprehensive protector cannot satisfy the real-time and rapid quality requirements of preventing override trip system for high-voltage power grid of coal mine underground. So this paper put forward the research for comprehensive protector of preventing override trip based on the EtherCAT. This paper first analyzes the principle and characteristics of the EtherCAT technology; and then puts forward the overall scheme of preventing override trip system; Finally, study and design the slave station and master station of preventing override trip system based on the EtherCAT.

Design of the Auxiliary Power Supply System of CRH2 EMU

2013 ◽  
Vol 409-410 ◽  
pp. 1445-1448
Author(s):  
Min Peng
Keyword(s):  
Control System ◽  
High Voltage ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
High Voltage Power Supply ◽  
Auxiliary Power

Maintenance and servicing to the EMU, in order to guarantee the operation safety, often need to stop high voltage power supply, using the ground power supply. As a result, need to provide a safe, stable and reliable ground auxiliary power supply for the EMU, ensure the normal maintenance, servicing and operation of various types of EMU. To this end, this paper based on the deployment of the ministry of railways and the requirements for configuration of ground power supply to the EMU, Analyze requirements of the auxiliary power supply system to the CRH2 EMU, on this basis, design the auxiliary power supply and its control system.

Sign in / Sign up

Export Citation Format

Share Document