應用相序不平衡演算法設計靜態同步補償器

Design of Static Synchronous Compensators Using the Sequence Unbalance Algorithm

李政道(Cheng-Tao Li)

指導教授 ： 許源浴

國立臺灣大學/電機資訊學院/電機工程學研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.00005

摘要

由於高科技產業的發展，使敏感性設備大量地使用在工業界，而這些敏感性設備要求比較高的電力品質。在電力系統中常見的由接地故障所引起的電壓驟降、電壓不平衡，通常會導致這類敏感性設備的誤動作或操作中斷。為確保能對電壓變動較靈敏的負載提供一高品質的電力供應，傳統的作法是裝設不斷電供電系統（Uninterruptible Power Supplies:簡稱UPS）；然而這是成本較高的解決方式，且對於其所使用的蓄電池也需定期保養。
本論文中將提出應用相序不平衡演算法設計靜態同步補償器，這是由一個三相脈波寬度調變（Pulse Width Modulation；PWM）的電壓型變流器連接一個直流電容器所組成。在系統架構方面，則採用數位式的架構，並以個人電腦為基礎，配合研華科技公司PCL-1800資料擷取卡來完成靜態同步調相器的控制核心，且並聯至配電系統上。由所得模擬與實驗結果發現，由於負載不平衡及單相接地故障產生電壓不平衡，可經由本論文所設計之靜態同步調相器，而達到降低不平衡率的目的。

關鍵字

補償器 ； 反流器 ； 無效必v ； 不平衡

並列摘要

Sensitive equipments used by high technology industries require highly quality power supplies. Typical voltage sages and unbalances caused by ground faults in the power system often interrupt the operation of these sensitive equipments.
A sequence unbalance algorithm will be proposed to design of a static synchronous compensator (STATCOM) which comprises a three- phase voltage-sourced Pulse Width Modulation (PWM) inverter with a dc capacitor. The control kernel of the STATCOM is implemented by a PC- based digital system with Advanced PCL-1800 data acquisition boards. From results of simulations and experiments, it is found that voltage un- balance can be effectively reduced by the proposed STATCOM.

並列關鍵字

reactive power ； unbalance ； inverter ； compensator

參考文獻

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