scholarly journals Pollution Flashover Voltage of Transmission Line Insulators: Systematic Review of Experimental Works

IEEE Access ◽  
2022 ◽  
pp. 1-1
Author(s):  
Ali Ahmed Salem ◽  
Kwan Yiew Lau ◽  
Wan Rahiman ◽  
Zulkurnain Abdul-Malek ◽  
Samir A. Al-Gailani ◽  
...  
Keyword(s):  
Systematic Review ◽  
Transmission Line ◽  
Pollution Flashover ◽  
Flashover Voltage ◽  
Experimental Works

Lightning Overvoltage Analysis and Calculation of 330kV Overhead Transmission Line

2014 ◽  
Vol 556-562 ◽  
pp. 1588-1591
Author(s):  
Xiu Bin Zhang ◽  
Ding Jun Wen ◽  
Ya Ming Sun ◽  
Hong Gang Chen
Keyword(s):  
Transmission Line ◽  
Equivalent Circuit ◽  
High Voltage ◽  
Transmission Lines ◽  
Equivalent Circuit Model ◽  
Voltage Level ◽  
High Voltage Transmission Line ◽  
Overhead Transmission Line ◽  
Overhead Transmission Lines ◽  
Pollution Flashover

Lighting is one of the important reasons of transmission line trip accident. For 330kV and above ultra high voltage transmission line, lighting flashover more frequently occur. To reduce tripping rate effectively and fundamentally, lightning over voltage level should be analyzed besides anti-pollution flashover. In this paper, a simplified equivalent circuit model of a 330kV overhead transmission lines is established. The lightning over voltage of the transmission is analyzed and calculated. Method to reduce the lightning overvoltage is discussed.

scholarly journals Influence of Silicone Rubber Coating on the Characteristics of Surface Streamer Discharge

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3784
Author(s):  
Xiaobo Meng ◽  
Liming Wang ◽  
Hongwei Mei ◽  
Chuyan Zhang
Keyword(s):  
Silicone Rubber ◽  
Electrical Power ◽  
Electrical Power System ◽  
Streamer Discharge ◽  
Reliable Operation ◽  
Pollution Flashover ◽  
Flashover Voltage ◽  
Streamer Propagation ◽  
Rubber Coating ◽  
Rubber Coatings

A pollution flashover along an insulation surface—a catastrophic accident in electrical power system—threatens the safe and reliable operation of a power grid. Silicone rubber coatings are applied to the surfaces of other insulation materials in order to improve the pollution flashover voltage of the insulation structure. It is generally believed that the hydrophobicity of the silicone rubber coating is key to blocking the physical process of pollution flashover, which prevents the formation of continuously wet pollution areas. However, it is unclear whether silicone rubber coating can suppress the generation of pre-discharges such as corona discharge and streamer discharge. In this research, the influence of silicone rubber coating on the characteristics of surface streamer discharge was researched in-depth. The streamer ‘stability’ propagation fields of the polymer are lower than that of the polymer with silicone rubber coating. The velocities of the streamer propagation along the polymer are higher than those along the polymer with silicone rubber coating. This indicates that the surface properties of the polymer with the silicone rubber coating are less favorable for streamer propagation than those of the polymer.

Correlation between Surface Conductivity and Pollution Flashover Voltage of Strain Insulator-String

2013 ◽  
Vol 431 ◽  
pp. 202-206 ◽  
Author(s):  
Shan Li ◽  
Jun Ping Zhang ◽  
Liang Gu ◽  
Jia De Liu
Keyword(s):  
Transmission Lines ◽  
Early Warning ◽  
Monitoring And Control ◽  
Remote Communication ◽  
Monitoring And Control System ◽  
Medium Voltage ◽  
Power Load ◽  
Pollution Flashover ◽  
Flashover Voltage ◽  
The Stability

For contamination of the medium voltage insulatorsXP-7 strain insulator-string, analysis of localized pollution flashover accident in recent years with a surface of insulator contamination degree of relationship, through the surface of porcelain insulator pollution layer conductivity indicators and calculation analysis on pollution flashover voltage, promote different voltage contaminated insulator under replacing the feasibility of early warning. Results showed that, the relationship between pollution flashover voltage and conductivity parameters is clear, available with microprocessor and more intuitive remote communication unit for remote monitoring and control system of early warning, reduce default phase pollution flashover accident of the power ring network of transmission lines in remote areas , enhance the stability of power load .

Transmission Network Status Monitoring Overview

2013 ◽  
Vol 325-326 ◽  
pp. 599-603
Author(s):  
Hao Yi Ling ◽  
Ling Mei Wang ◽  
Xing Yong Zhao
Keyword(s):  
Environmental Monitoring ◽  
Transmission Line ◽  
Condition Monitoring ◽  
Transmission Lines ◽  
Power Supply ◽  
Operational Reliability ◽  
Simulation Software ◽  
Vibration Monitoring ◽  
Pollution Flashover ◽  
Line Condition

Transmission lines is an important part of the power system. Transmission line condition monitoring system can enhance the operational reliability of the grid line level of safety, at the same time lay the foundation for intelligent transmission line. Insulator contamination monitoring , lightning monitoring, environmental monitoring, wire breeze vibration monitoring online monitoring technology on the existing transmission line condition monitoring technologies , including comparative analysis of the far-reaching. It can reduce the workload of the artificial line inspection , to reduce the occurrence of pollution flashover to improve power supply reliability. To reduce the pollution flashover occurred to improve the reliability of power supply. Condition based maintenance decision support and sharing of information with other systems. HOMER and MATLAB simulation software , simulation , historical data analysis . Export real - time wind speed data, provide data to support the conductor galloping and aeolian vibration of monitoring and environmental monitoring.

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