Preparation of Light-weight and High Insulation Composite Core and Its Application in 66 kV Composite Cross-arm

ZHANG Zhongyuan; SU Zheng; LI Le; GAO Fengsheng; LI Haoyi; YIN Xiaoxuan; LIU Hechen; LIU Yunpeng; ZHOU Songsong; TANG Li

doi:10.13296/j.1001-1609.hva.2024.04.008

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Preparation of Light-weight and High Insulation Composite Core and Its Application in 66 kV Composite Cross-arm

Research and Application of Advanced Electrical Materials Under the Background of Dual Carbon Strategy | 更新时间：2025-04-26

- Preparation of Light-weight and High Insulation Composite Core and Its Application in 66 kV Composite Cross-arm
- High Voltage Apparatus Vol. 60, Issue 4, Pages: 56-64(2024)
- 作者机构：
  
  1.华北电力大学河北省绿色高效电工新材料与设备重点实验室，河北　保定　 071003
  2.中国电力科技研究院有限公司，北京　 100192
  3.中国南方电网电力科学研究院，广州　 510000
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52207023)
- DOI：10.13296/j.1001-1609.hva.2024.04.008
  CLC：
- Received：10 December 2023，
  
  Revised：20 February 2024，
  
  Published：16 April 2024
- 稿件说明：
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ZHANG Zhongyuan, SU Zheng, LI Le, et al. Preparation of Light-weight and High Insulation Composite Core and Its Application in 66 kV Composite Cross-arm[J]. High voltage apparatus, 2024, 60(4): 56-64.
DOI：

ZHANG Zhongyuan, SU Zheng, LI Le, et al. Preparation of Light-weight and High Insulation Composite Core and Its Application in 66 kV Composite Cross-arm[J]. High voltage apparatus, 2024, 60(4): 56-64. DOI： 10.13296/j.1001-1609.hva.2024.04.008.

摘要

随着“双碳”战略的逐步落实，新型复合材料横担正逐步代替铁制横担，在电力线路中的应用日益广泛。文中制备得到密度为1.1 g/cm

的66 kV轻质高绝缘复合绝缘横担，并对其进行吸水率、染料渗透、水扩散泄漏电流、击穿强度、热诱导、机械及电气试验。试验结果表明：填充芯体材料样品的质量吸水率为0.141%，水扩散泄漏电流小于103.3 μA，交流击穿强度大于71 kV/cm，各项性能指标均达到DL/T 1580—2016棒形复合绝缘子用芯棒技术规范对于理化性能、电气性能及机械性能的标准要求，样品及横担整体无明显缺陷，横担耐老化性较好。同时，轻质高绝缘复合绝缘横担微观界面结合良好，绝缘性能优于传统实心横担，满足新型电力系统清洁低碳、安全可靠的应用需求。

Abstract

With the gradual implementation of the ‘dual Carbon’ strategy

the cross arm with new composite material is gradually replacing the iron cross arm and its application in power lines is becoming more and more extensive. In this paper

a 66 kV lightweight and high-insulating composite insulation cross arm with a density of 1.1 g/cm

is prepared and subjected to such test as water absorption

dye penetration

water diffusion leakage current

breakdown strength

thermal induction

mechanical and electrical performance. The test results show that the mass water absorption rate of the sample filled with core material is 0.141%

the water diffusion leakage current is less than 103.3 μA and the AC breakdown strength is higher than 71 kV/cm. All the performance indexes can reach the requirements of DL/T 1580—2016 technical

specification for core bars for bar composite insulators in terms of physical and chemical properties

electrical properties and mechanical properties. Both the sample and the cross arm as a whole have no obvious defects and the cross arm has good aging resistance. At the same time

the lightweight and high-insulation composite insulation cross arm has good microscopic interface bonding performance

and the insulation performance is superior to that of the traditional solid cross arm

which meets the application needs of the new power system for clean

low-Carbon

safe and reliable applications.

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