靜態同步補償器和電力系統穩定器對系統電壓及穩定度之影響

The Effect of STATCOM and PSS on Power System Voltage and Stability

魏堂宇(Tang-Yu Wei)

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(2005年)

https://doi.org/10.6342/NTU.2005.00738

摘要

本論文之主要目的是研究靜態同步補償器和電力系統穩定器對電力系統的影響，另外，本論文並探討利用靜態並聯補償器來改善公元2005年台電系統現有的問題並且增加電力系統的穩定度。目前台電系統中存在兩個主要問題：一個是峨眉匯流排電壓過低的問題，另一個是潛藏在區域間的低頻振盪問題。
在並聯補償的穩態研究之中，為了改善峨眉匯流排電壓過低的情形，考慮各種可能發生的事故來找出適當的並聯補償器裝設地點;並且探討三種不同事故下，針對不同的裝置容量做分析來找出最佳的補償容量。另外，並聯補償器藉由電壓的動態響應情形，找出一組最佳的比例組合，來有效抑制超高壓匯流排的電壓振盪情形。在有關靜態同步補償器和電力系統穩定器的方面，本論文也考慮三種可能發生的事故，觀察重要匯流排的電壓振盪情形以及故障清除後電壓的振盪頻率和阻尼比，來評估兩者之間的互相影響。
研究結果顯示，靜態並聯補償器對於電壓的改善有不錯的效果，尤其以靜態同步補償器的性能表現最佳，而靜態同步補償器和電力系統穩定器之間並無互相牽制的現象。

關鍵字

靜態同步補償器 ； 靜態虛功補償器 ； 電力系統穩定器 ； 電壓 ； 穩定度

並列摘要

The main purpose of this thesis is to examine the effect of Static Synchronous Compensators (STATCOMs) and Power System Stabilizers (PSSs) on the steady-state and dynamic performance of Taiwan power system. In daily operation of Taiwan power system, two problems have been observed. One is the low bus voltage at Omei substation; and the other is the low frequency oscillation problem.
To improve the low voltage problem at Omei substation, proper location and capacities for the STATCOMs are determined based on power flow simulations for the system under various operating conditions. Dynamic simulations are also conducted to examine the effect of STATCOMs and PSSs on the substation dynamic voltage responses and low frequency oscillations. Three different operating conditions have been considered in the dynamic simulations.
It is found that the dynamic voltage response can be improved by the STATCOMs while the dampings for the low frequency oscillations can be improved by the PSSs. It is also concluded that there is no significant interactions between the STATCOMs and the PSSs.

並列關鍵字

STATCOM ； SVC ； PSS ； Voltage ； Stability

參考文獻

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