NDLI: New method of preventing ice disaster in power grid using expanded conductors in heavy icing area

Content Provider	IET Digital Library
Author	Jiang, Xingliang Fan, Caijin Xie, Yanbin
Abstract	Considering continuous power supply conditions, there is currently no effective method for preventing ice disaster, and also some deficiencies of the existing completed short-circuit ice melting method has been found. Here, taking typical bundled and expanded conductors as the sample, its icing performance was tested and the combined ice-wind load of tested lines was analysed. Then, a new method of substituting expanded conductors with the same conductive cross-sectional area for bundled conductors to prevent ice disasters is proposed. Research results showed that: from stagnation point to both sides of crescent-shaped conductors, local collision rate gradually reduce to 0; under various meteorological factors, there is still a power function relationship between ice thickness of conductors (Dc ) and the diameter of conductors (D); the ice amount of six tested conductors gradually increases with the increase of ice thickness of Rotating Single-Cylinder Ice Collector (Dr ), while the ice amount reduction rate reduces first and then increases with Dr ; the combined ice-wind load ratio of bundled and expanded conductors increases with the increase of wind speed and Dr . Therefore, it is a low-cost method for improving the anti-icing capacity of transmission lines and preventing icing disaster once and for all.
Starting Page	536
Ending Page	542
Page Count	7
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 4, Feb (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5258
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-12-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Anti-icing Capacity Bundled Conductors Combined Ice-wind Load Ratio Conductive Cross-sectional Area Continuous Power Supply Condition Crescent-shaped Conductors Expanded Conductor Freezing Heavy Icing Area Ice Ice Amount Reduction Rate Ice Disaster Ice Thickness Icing Disaster Icing Performance Low-cost Method Overhead Line Conductor Overhead Power Line Power Function Relationship Power Grid Power Overhead Line Power System Protection Power Transmission Line Power Transmission Protection Short-circuit Ice Melting Method Single-Cylinder Ice Collector Statistics Tested Conductor Transmission Line
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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