Study on overhead transmission line on-line monitoring technology

Yang, Zhichun; Zivlak, Nikola; Xu, Min; Ljubičić, Marko

doi:10.2298/tsci151214024y

Cited by 7 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pollution condition of insulator can be judged by measuring the leakage current value and its variation, because most direct cause of pollution flashover of insulator is the sharp rise of surface leakage current. The leakage current monitoring system of insulator has been developed in China since 2000 [75], which can collect leakage current, flashover pulse, temperature, humidity and rainfall, and offer the early warning and diagnosis judging by expert software. The second method is equivalent salt deposit density (ESDD) monitoring [73, 76].…”

Section: Review On Condition Monitoring and Diagnosis Of Power Equimentioning

confidence: 99%

Condition monitoring and diagnosis of power equipment: review and prospective

2017

High Voltage

212

View full text Add to dashboard Cite

To ensure the power system operates safely and reliably, it is essential to monitor and evaluate the health condition of power equipment on-line or off-line. This study reviews the research status in condition monitoring and diagnosis of power equipment, including transformer, gas insulated switchgear, cable, external insulation, generator, and power capacitor in recent years. Although much progress has been made in technologies of condition monitoring and fault diagnosis such as test accuracy, fast and accurate fault localisation and recognition of fault types, there are still many deficiencies which needs further research work, including the reliability of signal collection from sensors, the accuracy of data treatment and analysis, antiinterference performance of test equipment, appropriate models used for condition evaluation. The prospective of condition monitoring and diagnosis technologies of power equipment are also presented in this study. It is proposed that the application of big data, internet of things and cloud computing should be expected and given special attention in the near future.

show abstract

Section: Review On Condition Monitoring and Diagnosis Of Power Equimentioning

confidence: 99%

Condition monitoring and diagnosis of power equipment: review and prospective

2017

High Voltage

212

View full text Add to dashboard Cite

show abstract

Intelligent control and optimization of uninterrupted power serving de-icing technology for 110 kV power lines

Guo,

Zhang,

Jia

et al. 2024

International Journal of Low-Carbon Technologies

View full text Add to dashboard Cite

In order to ensure the secure and reliable operation of the power system, extensive research has been conducted both domestically and internationally on the anti-icing and de-icing techniques for transmission lines. To achieve uninterrupted de-icing, this paper employs the technique of split conductor loop current for de-icing transmission lines. Moreover, by integrating the expert system with fuzzy logic theory based on the online monitoring system for ice covering on transmission lines, an intelligent control system for de-icing devices on ice-covered transmission lines has been established. In accordance with the requirements of the fuzzy expert system, the fuzzy membership functions of input variables, fuzzy rules, and various states of fuzzy output have been determined. The 110 kV LGJ-240 line was selected as the pilot line, and parameters such as ice covering thickness, conductor temperature, and de-icing time were monitored. Through online de-icing experiments, this study achieved automated control of de-icing devices and monitored the de-icing process. Utilizing a fuzzy expert system to assess online monitoring data effectively evaluated the condition of ice-covered transmission lines. The proposed ice melting model demonstrated an average relative error of 5.2% compared to measured results, validating the credibility of the assessment and offering guidance for the operation and maintenance of transmission lines.

show abstract