NDLI: Distribution of electric field and structure optimisation on the surface of a ±1100 kV smoothing reactor

Content Provider	IET Digital Library
Author	Wang, Ping Zhao, Yingyu Lv, Fangcheng Li, Kang Ding, Yujian
Abstract	A three-dimensional (3D) finite-element analysis model is established based on the structural characteristics of ±1100 kV oblique-dry-type smoothing reactor, to optimisation of the external insulation configuration thereof by the Comsol Multiphysics. The electric field on the grading ring and insulators surface is calculated and analysed. The results show that the electric field is extremely uneven and the electric field strength of the outer layer of the rain cover and the grading ring connected with the lowest layer of the main body is the largest around the whole model. Accordingly, it is proposed to enlarge the diameter of the outer layer of the grading ring, reduce the layer numbers of grading ring on the rain cover, and reduce the smoothing layer numbers of grading ring outside the insulation pillar: this should make the electric field distribution of the reactor surface more uniform. The experimental platform was established in Beijing Changping ultra-high voltage test base and causal-comparative tests of setup were undertaken to compare the external insulation characteristics of the smoothing reactor optimised with the original. The experimental results demonstrate that the switching impulse voltage of the smoothing reactor increases and the external insulation performance of the smoothing reactor are thus improved.
Starting Page	441
Ending Page	446
Page Count	6
ISSN	17518822
Volume Number	13
e-ISSN	17518830
Issue Number	Issue 3, May (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/13/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5154
Journal	IET Science, Measurement & Technology
Publisher Date	2018-12-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Electric Field Electric Field Distribution Electric Field Strength External Insulation Characteristic External Insulation Configuration External Insulation Performance Finite Element Analysis Grading Ring Insulator Surface Layer Numbers Oblique-dry-type Smoothing Reactor Optimisation Optimisation Technique Rain Cover Reactors (Electric) Smoothing Reactor Surface Structural Characteristic Three-dimensional Finite-element Analysis Model Transformer And Reactors Voltage Distribution
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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