Model for Predicting DC Flashover Voltage of Pre-Contaminated and Ice-Covered Long Insulator Strings under Low Air Pressure

Jianlin Hu, Caixin Sun, Xingliang Jiang, Qing Yang, Zhijin Zhang and Lichun Shu
Additional contact information
Jianlin Hu: State Key Laboratory of Power Transmission Equipments & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Caixin Sun: State Key Laboratory of Power Transmission Equipments & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Xingliang Jiang: State Key Laboratory of Power Transmission Equipments & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Qing Yang: State Key Laboratory of Power Transmission Equipments & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Zhijin Zhang: State Key Laboratory of Power Transmission Equipments & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China
Lichun Shu: State Key Laboratory of Power Transmission Equipments & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, China

Energies, 2011, vol. 4, issue 4, 1-16

Abstract: In the current study, a multi-arc predicting model for DC critical flashover voltage of iced and pre-contaminated long insulator strings under low atmospheric pressure is developed. The model is composed of a series of different polarity surface arcs, icicle-icicle air gap arcs, and residual layer resistance. The calculation method of the residual resistance of the ice layer under DC multi-arc condition is established. To validate the model, 7-unit and 15-unit insulator strings were tested in a multi-function artificial climate chamber under the coexistent conditions of low air pressure, pollution, and icing. The test results showed that the values calculated by the model satisfactorily agreed with those experimentally measured, with the errors within the range of 10%, validating the rationality of the model.

Keywords: ice-covered insulator string; flashover; mathematical model; DC; low air pressure; pre-contamination (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2011
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.mdpi.com/1996-1073/4/4/628/pdf (application/pdf)
https://www.mdpi.com/1996-1073/4/4/628/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:4:y:2011:i:4:p:628-643:d:12107

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().