以鍵結圖法對中壓GIS斷路器跳脫線圈分析之研究

A Study of Medium Voltage GIS Breaker Trip Coil Analysis Using Bond Graph Method

曾建閔(Chien-Min Tseng)

指導教授 ： 曾國雄 ； 高文秀

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2008年)

https://doi.org/10.6841/NTUT.2008.00547

摘要

有鑒於台電近十餘年來中壓系統陸續引進氣封絕緣開關設備(Gas Insulated Switchgear，GIS)作為系統保護開關設備的主流，曾發生多起斷路器無法正常跳脫而引起事故之擴大，事故分析結果與斷路器之操作機構特性不清楚有很大的關聯，所以斷路器操作機構特性分析更顯得重要。
鍵結圖法是一套用來分析系統動態響應的模擬分析工具，配合能量守恆定律，明確的表示出系統中能量的傳送與轉換現象，並使用類似等效電路R、L、C元件的觀念，來模擬不同物理領域的動態系統，可清楚地分析及整合各領域能量的轉換，也可依一轉換法則轉換成Simulink軟體模組供系統模擬分析。
斷路器跳脫機構特性與其跳脫線圈電流相關，本文提出23kV GIS之斷路器跳脫線圈驅動機構鍵結圖的建模方法，使其電、磁、機械領域有一整合的平台，並經由鍵結圖轉Simulink模擬繪出不同電壓、不同阻力等條件下之跳脫線圈電流與機構動程變化，然後實際測量某一上市廠牌中壓GIS跳脫線圈在不同控制電壓、推動阻力及機構間隙等變化條件下之電流曲線，與Simulink模擬結果作比對，以驗證其正確性，本研究的結果可作為斷路器跳脫線圈運作狀況評估與故障診斷，進一步更可用來提昇其性能與設計新產品。

關鍵字

鍵結圖 ； 斷路器 ； 跳脫線圈 ； 類神經 ； 因果路徑

並列摘要

Taiwan power system has used Gas Insulated Switchgear (GIS) in medium voltage system to be the main switching equipment of protecting system in the past decade. The failure in circuit breaker operation leads to the expansion in contingency. The characteristics analysis of the operation mechanism for circuit breakers becomes very important.

Bond graph is the tool mean to perform dynamic simulation to a system: Applying the condition in law of the conservation of energy to represent the power delivering and transferring in system clearly. Using the concept similar to R、L、C equivalent circuit to simulate the dynamic systems in different fields. Dynamic systems could be analyzed and integrated the power which is transferring in every field. It could converted into Simulink module by transferring rule to simulate and analyze.

The characteristics of circuit breaker operation mechanism are related to its trip coil currents. Modeling of circuit breaker operating mechanism in bond graph to be integrated in electromagnetic and mechanical field in one platform were proposed in the thesis, simulating the coil currents and the mechanism changing in conditions of different voltages and resistances via bond graph transferring to Simulink, Different trip coil currents with various control voltages, impelling resistances, and mechanism gap were measured to make a comparison with the simulating results in Simulink to verify the correctness. The results of this research could be the estimate of trip coil in circuit breaker and faults assessing, further, advanced the performance and designed new product.

並列關鍵字

Bond graph ； Breaker ； Trip coil ； Neural Network ； Causal Path

參考文獻

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[4] IEC 62271-100, High-voltage switchgear and controlgear, 2001-05.

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