變電所接地及防雷措施

Lighting Protection and Grounding of Substation

黃金樹(Chin-shu Huang)

指導教授 ： 王瑋民

崑山科技大學/工程學院/電機工程研究所/碩士(2007年)

https://doi.org/10.6828/KSU.2007.00042

摘要

本論文主要介紹避雷針的演進及理論，並針對理論探討其接閃效能，文中並針對台灣地區落雷情況與遭雷擊率做探討，同時對接閃器之設計及實況推導做介紹，並以龍崎超高壓變電所為例，探討其架空地線的防雷效果，除此之外，接地網路的良窳是接閃效能成敗的重要因素，本文藉由ATP軟體做地網模擬分析。當鐵塔頂端遭雷擊中時，鐵塔的電壓會因不同塔腳電阻、雷擊電流峰值和雷擊電流波頭值而造成不同的電壓升。實驗表明，降低塔腳電阻能有效減低地電位的浮升。架設架空地線網和下引導線，可有效攔截雷擊，並將雷擊電流導引至大地，以達到保護人身及設備安全之目的。

關鍵字

避雷針 ； 雷撃架空地線

並列摘要

This research introduces the lightning rod and its evolution, aiming on the lightning receiving effect based on theories.The theme focuses on the phenomena of lightning occurrence and its rate struck in Taiwan. In order to conduct the research practically, the performance of overhead ground wire in Lung-chi E/S was examined based on ATP package software for transient simulation on the ground system of substation when the tower was struck by a lightning stroke. The over-voltages induced at different sites, which is inside the substation, were simulated. Meanwhile, the effects of ground resistance and lightning current on the transient over-voltage were simulated as well.

並列關鍵字

lightning ； overhead ground wire ； lightning rod

參考文獻

[29] 洪得峻、周至如，“架空輸電線路之防雷策略及其接地系統之雷擊特性研究”，中原大學，民國九十三年。

[1] IEEE Std 998-1996, “IEEE Guide for Direct Lightning Stroke Shielding of Substations”.

[5] Whitehead, E. R., “CIGRE Survey of the Lightning Performance of Extra-High-Voltage Transmission Lines,”Electra, no. 33, pp. 63-89, Mar. 1974.

[7] Suzuki, T, Miyake, K., and Shindo, T, “Discharge path model in model test of lightning strokes to tall mast,”IEEE Transactions on Power Apparatus and Systems, vol. PAS- 100, no. 7, pp. 3553-3562, 1981.

[8] IEEE Std 1410-1997, IEEE Guide for Improving the Lightning Performance of Electric Power Overhead Distribution Lines.．