低壓配電系統限流型斷路器之保護協調試驗及其效益評估

Protective Coordination Tests and Benefit Assessment for the Current-limiting Circuit Breaker in the Low Voltage Distribution System

丁振亞(Chen-ya Ting)

指導教授 ： 周至如

國立臺北科技大學/電資學院/電機工程系所/碩士(2014年)

摘要

本論文在探討科技廠低壓配電系統發生短路故障情形下，對其上下游斷路器垂直間保護協調之影響及水平間造成瞬間電壓驟降對敏感性製程機台的衝擊。本研究以實驗室實測方法，選擇一般型及限流型兩種不同模殼式斷路器串級連接，混用當作上游斷路器或下游斷路器，模擬三相短路試驗。驗證限流型斷路器在第一個半週波內，能限制所通過最大預期電流的快速跳脫特性，可作為上下游限流型斷路器垂直間完全選擇性保護協調；同時於斷路器動作清除故障前之短暫時間所產生的電壓驟降，可符合SEMI F47電壓驟降忍受能力曲線標準的要求。提供設計人員做為低壓配電系統規劃保護協調之重要參考價值。

關鍵字

保護協調 ； 選擇性 ； 完全選擇性保護協調 ； 限流 ； 限流型模殼式斷路器 ； 動態電阻 ； 電弧電壓 ； 最大預期電流 ； 電壓驟降 ； SEMI F47

並列摘要

The objective of this thesis is to study the protective coordination between upstream and downstream circuit-breakers during short-circuit fault and influence of voltage sags on various sensitive equipments in the low-voltage distribution system in the high-tech plants. Noncurrent-limiting and current-limiting circuit breakers mixed as an upstream or downstream, and two combination in series connection are tested in the laboratory. The test is to verify the fast trip characteristics of current-limiting circuit breakers that can not only interrupt the currents within the first half cycle with prospective limited currents but also ensure the total selectivity between upstream and downstream current-limiting circuit breakers. In addition, the voltage sag magnitude and duration can be obtained from the test to certify that the use of current-limiting circuit breakers can meet the requirement of SEMI F47. All of these tests are very important to certify that the current-limiting circuit breakers with total selectivity is a useful solution for designers to plan protective coordination for the low voltage distribution system of high-tech plants.

並列關鍵字

Protective Coordination ； Selectivity or Discrimination ； Total Selectivity or Total Discrimination or Selective Coordination ； Current-Limiting ； Current-Limiting Molded Case Circuit Breaker ； Dynamic Impedance ； Arc Voltage ； Prospective Current ； Voltage Sag or Voltage Dip ； SEMI F47

參考文獻

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[28] 黃仁宗，影響中部科學園區電壓驟降事故範圍研究，碩士論文，國立台北科技大學電機工程系，台北，2012。

[3] IEEE Std. 1015-2006, "Recommended Practice for Applying Low Voltage Circuit Breakers Used in Industrial and Commercial Power Systems," IEEE Blue Book, IEEE Service Center.

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[6] Assadollah Abri, Stefan Kjellnas, Robert Nordgren, Sven Lindgren, and Lars A. Bhghammar, "Mechanism of Interaction Between Electric Arc and Breaking Chamber in Low Voltage Current Limiting Circuit Breakers," IEEE Transactions on Industry Applications, Vol. 21, No. 5, September/October 1991.