大型科技廠電力設備事故案例 分析及其風險評估與改善對策

Fault Cases Analysis and Risk Assessments and Their Improved Strategies of Power Apparatus in the Large High-tech Industrial Plants

蘇健忠(Jiann-Jong Su)

指導教授 ： 周至如

中原大學/工學院/電機工程研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600083

摘要

本報告探討典型的大型科技廠內電力系統及各種電力設備之異常現象案例並評估其風險,藉由風險評估瞭解發生風險的原因及探討其改善對策,文中首先描述典型的大型科技廠電力系統一般規劃實例並描述其可能潛在的風險性,主要是不當的回路架構及保護規劃方面之風險性。為進行較量化的風險評估,本文提出風險矩陣表做為評估的方式,其重點是以事故率及嚴重性為風險的指標來評估事故的風險等級。此外,在平時運轉方面,風險的評估著重在對電力品質的影響,包括對電力系統及廠內設備之影響,並以諧波為主要評估指標,文中所探討的皆為實際發生的案例,具有相當的代表性,在這些案例的風險評估當中,可釐清一些風險發生的機制及原因,並提出改善對策,這些改善對策可分為事故防範對策及電力品質改善對策,前者將與規劃設計及維護有關,後者更著重在諧波濾波器的安裝,這些改善對策在實際案例的執行情形及其效果將加以介紹以供參考。

關鍵字

事故案例 ； 電力品質 ； 風險評估

並列摘要

In this report, the practical cases of abnormal phenomena on the power system and apparatus in the typical large high-tech industrial plants are investigated and their induced risks are evaluated. From risk evaluations, the root causes and their improved strategies of risks are found out. The practical conventional planning of power system in the large high-tech industrial plant and the associated hidden risks are described which mainly include the unsuitable planning of circuit scheme and protections. For evaluation the risks with quantized number, the evaluation method with matrix tables of risk is proposed, which is based on failure rate and serious level of a fault occurred. As to normal operation situations, risk evaluation is based on power quality index which focus on harmonics situations. The affection of power quality on power system and equipments are considered. All the cases to be investigated had been occurred in the past, their risk evaluations were helpful for finding the mechanism and root causes of risk and the improved strategies. The improved strategies include fault preventing strategies and power quality improved strategies. The former strategies are very related with the planning, design and maintenances of system and equipments, and the later strategies are using harmonic filters. The implementation of these strategies and their effects are illustrated.

並列關鍵字

risk assessment ； power quality ； fault cases

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