靜態同步補償器應用於感應發電機併聯電力系統

隨著環保意識的抬頭與發電燃料成本價格的上漲，再生能源逐漸受到重視，風力發電即為其中一種方式。三相感應發電機為風力發電系統的電力來源，但由於感應機本身有電壓調整能力不佳的缺點，兼之風力的來源並不穩定，故需要額外的控制器。本論文應用一靜態同步補償器，提供系統無效電力，用來調整系統電壓，以及改善電壓品質。靜態同步補償器，在架構上是由一直流電容器來提供電壓來源，並使用脈波寬度調變技術以調節三相電壓源型變流器的輸出電壓。在模擬方面使用Matlab/Simulink軟體來評估系統的補償效果，實驗方面採以個人電腦為基礎，配合研華科技公司PCL-1800資料擷取卡，透過C語言來達成電壓補償控制，最後由模擬及實驗結果來驗證靜態同步補償器應用於感應機併聯電力系統，確實可以有效維持系統電壓的穩定性。

關鍵字

風力發電；感應發電機；電壓調整；靜態同步補償器

並列摘要

As the issue of environmental protection receives increasing attention and the price of fuel increases, renewable energy source, such as wind turbine generator system, is getting more and more important. Three phase induction generators are the main source of the power. Induction machines have unsatisfactory voltage regulation and the wind speed is variable. Hence, in this thesis, a static synchronous compensator is applied to supply reactive power for the system, to regulate bus voltage, and to achieve better voltage profile on the customer side. The static synchronous compensator employs a direct current capacitor to offer voltage source and use the pulse-width modulation technique to adjust the output voltage of the three phase voltage source inverter. The effectiveness of the STATCOM is investigated by simulations using the MATLAB/Simulink software and experiments. In the experiments, the controller of the STATCOM is based on a personal computer with Adventec PCL-1800 data acquisition cards. Digital control is implemented using C language. Finally, it is concluded from results of simulations and experiments the load bus voltage in a grid-connected induction generator can be effectively regulated by the STATCOM.

並列關鍵字

wind energy generation ； induction generator ； voltage regulation ； static synchronous compensator

參考文獻

of self-excited induction generators,” IEE PROC.,

[2] T.J.E. Miller, Reactive Power Control in Electric

System. John Wiley & Sons, Inc, 1982.

[3] L. Gyugyi, “Power Electronics in Electric Utilities:

Concepts and Technology of Flexible AC Transmission

國際替代計量

靜態同步補償器應用於感應發電機併聯電力系統

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