Application of PLC in On-Line Monitoring and Diagnosis for XLPE Cables

2013 ◽  
Vol 291-294 ◽  
pp. 2037-2041
Author(s):  
Bang Li Shi ◽  
Xin Gang Chen ◽  
Yi Yang
Keyword(s):  
Monitoring System ◽  
Traveling Wave ◽  
High Reliability ◽  
Good Stability ◽  
Power Cable ◽  
Power Cables ◽  
Good Resistance ◽  
Monitoring And Diagnosis ◽  
On Line ◽  
Safety And Stability

In the perspective of realizing the on-line monitoring of power cable insulation, to analyze the changes of the traveling wave when the cable fault, thus we can found the power cable failures in advance and deal with it timely in order to make sure the safety and stability of power cables. Owing to high reliability, small size, strong anti-interference ability and application to cruel industrial environments of PLC, on-line monitoring system based on PLC has good resistance to interference of electric and magnetic and good stability.

An On-Line Multiparametric Water Quality Monitoring System Based on Visible Spectrophotometry

2011 ◽  
Vol 189-193 ◽  
pp. 2801-2804 ◽  
Author(s):  
Hai Yang Liao ◽  
Peng Tian ◽  
Yu Du ◽  
Zhi Yu Wen
Keyword(s):  
Water Quality ◽  
Monitoring System ◽  
High Efficiency ◽  
High Reliability ◽  
Pure Water ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Compact Structure ◽  
Visible Spectrophotometry ◽  
On Line

Water quality monitoring plays an important role in contamination control and environment protection. This paper describes an on-line multiparametric water quality monitoring system based on visible spectrophotometry, which combines embedded technology with GPRS telecommunication technology. This system can realize online wireless monitoring to concentrations of chromium (Cr), plumbum (Pb), A surfactant (AS), chemical oxygen demand (COD), ammonia nitrogen (AN), total phosphorus (TP) and total phenol (TPh) in real time. The mechanical structure, hardware circuit and software design of the system are completed. The absorption spectrums of pure water and MB-SDS complex have been measured. Preliminary experiments using a model machine show that each mechanism of the system runs well. Moreover, the monitor possesses many advantages, such as high degree of automation, high reliability, high efficiency, compact structure, small size, and so on.

A Synchronous Sampling System of On-Line Monitoring for Long-Distance Cable Insulation Based on DSP and GPS

2014 ◽  
Vol 981 ◽  
pp. 653-656
Author(s):  
Xin Lao Wei ◽  
Bo Zhu ◽  
Bing Pang ◽  
Tong Liu ◽  
Song Wang ◽  
...  
Keyword(s):  
Monitoring System ◽  
Global Positioning System ◽  
Power Cable ◽  
Induced Voltage ◽  
Sampling System ◽  
Long Distance ◽  
Cable Insulation ◽  
Synchronous Sampling ◽  
Global Positioning ◽  
On Line

The induced voltage of the long-distance power cable will reach high value, so the metallic sheath of cable should be cross-linked to reduce the induced voltage. It is safe and economic enough but bring out problem of monitoring the situation of insulation. In order to solve the problem, a new method is provied and a monitoring system based on Digital Siganl Processor and Global Positioning System are designed. The composition of system has been introduced, includes the hardware and software design. The results show that the monitoring system can reflect the situation of cable insulation, and the mothod is proved to be validity and feasibility.

scholarly journals Review on Detection and Analysis of Partial Discharge along Power Cables

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7692
Author(s):  
Xiaohua Zhang ◽  
Bo Pang ◽  
Yaxin Liu ◽  
Shaoyu Liu ◽  
Peng Xu ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Development Trend ◽  
Acceptance Testing ◽  
Power Cable ◽  
Power Cables ◽  
Affecting Factors ◽  
Comprehensive Review ◽  
Theory To Practice ◽  
On Line ◽  
Line Test

Partial discharge (PD) detection and analysis plays a crucial role for acceptance testing and condition monitoring of power cables. Various aspects are related to PD in power cables from theory to practice. This paper first summarizes the PD mechanism and models used for PD analysis in power cables. Afterwards, PD detection is addressed in the aspects of off-line test, on-line test, and sensors. PD analysis is discussed in detail. Specifically, related quantities and algorithms for PD analysis are outlined. PD characteristics with affecting factors, e.g., dielectric type, load, and applied voltage are discussed. Experience on PD development trend with measurements in field is analyzed. Based on the comprehensive review, challenges of PD detection and analysis along a power cable are proposed.

On-Line Monitoring Systems for Power Cable Junctions in City Zone

2014 ◽  
Vol 595 ◽  
pp. 185-190 ◽  
Author(s):  
Ti Yin Li ◽  
Jing Zhang ◽  
Hai Yan Yao
Keyword(s):  
Monitoring System ◽  
Data Transmission ◽  
Data Transfer ◽  
Good Effect ◽  
Monitoring Systems ◽  
Power Cable ◽  
Short Message ◽  
Control Center ◽  
On Line ◽  
The City

The current on-line monitoring systems for power cable junctions have some disadvantages, such as difficulty of the power supply of detecting devices, the restricted distance of data transmission and the high cost of devices. Because of the disadvantages, they are just suitable for the substation or the power plant. In this paper, a novel monitoring system which combines with the practical running situation of the power cable in the city is achieved. The monitor system uses the low consumption microcontroller C8051F020 as a data acquisition terminal, Wavecom Q2406A as data transfer equipment, and transmits the data collected to the control center by short message of GSM. The monitoring system is especially adequate to big and medium city. The equipment has been practically applied with good effect.

Intelligent Online Monitoring and Anti-Theft System for Underground Cables

2015 ◽  
Vol 738-739 ◽  
pp. 256-259
Author(s):  
Xu Feng Tong ◽  
Jiao Na Zhang ◽  
Wen Ting Li ◽  
Dong Xia Zhang
Keyword(s):  
Power Management ◽  
Online Monitoring ◽  
High Reliability ◽  
Low Cost ◽  
Failure Detection ◽  
Power Cable ◽  
Power Cables ◽  
Underground Cables ◽  
Warning Messages ◽  
Online Monitoring System

Based on the characteristics of power cables, an intelligent online monitoring system is constructed for failure detection and positioning. The implementation idea is illustrated and the main functions of the system are introduced in this paper. When power cable is destroyed or stolen, the system will send warning messages to alert the power management department. The actual applications show that the system has the advantages of convenience, low cost and high reliability.

scholarly journals The Design of Partial Discharge On-Line Monitoring System for XLPE Power Cable

2013 ◽  
Vol 6 (21) ◽  
pp. 4063-4069
Author(s):  
Chen Rui-Long ◽  
Qian Yong ◽  
Ye Hai-Feng ◽  
Sheng Ge-Hao ◽  
Jiang Xiu-Chen
Keyword(s):  
Monitoring System ◽  
Partial Discharge ◽  
Power Cable ◽  
On Line ◽  
Xlpe Power Cable
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