使用DSP於風力發電系統電壓與頻率之檢測

Using DSP for Voltage and Frequency Measurement of a Wind Power Generation System

翁健昆(Chien-Kun Weng)

指導教授 ： 張文宇 ； 楊宏澤

中原大學/工學院/電機工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500553

摘要

本論文旨在研製一以數位訊號處理器為基礎，用於風力發電系統電壓與頻率之檢測系統。所建構之系統藉由數位訊號處理器(Digital Signal Processor, DSP)的運算能力，所有的參數量測與系統控制均可即時完成。
風力發電分散式系統一般均須併入配電系統，當分散式發電系統併入配電系統時，將存在孤島效應、諧波失真等現象。對於此類問題，風力發電系統應立即檢測出此狀況並做適當之控制，以免造成危害。風力發電系統各項參數即為系統控制之依據，但風力發電系統易受天候及負載變化的影響，特別當其與市電解聯獨立運轉時，欲達到快速且準確的量測實屬不易。
本論文以數位訊號處理器為基礎，先於數位訊號處理器上實現不同之電壓與頻率量測演算法，再以數值驗證方式對各個演算法進行模擬比較，驗證各演算法之特性及其性能；最後再應用至實際風力發電系統，以評估各演算法對於系統控制之效能。

關鍵字

風力發電系統 ； 頻率檢測 ； 數位訊號處理器 ； 孤島效應

並列摘要

The thesis designs and implements a DSP(digital signal processor, DSP) based voltage and frequency measurement system for the wind power generation system. Through the DSP, all the parameter estimation and the system control can, therefore, be carried out in real time.
The dispersed wind-power generation system is generally interconnected to the distribution system. Issues of islanding operation or harmonic distortion would exist in the distribution system interconnected with a dispersed wind-power generation system. To avoid the problems thus caused, the wind-power generation system should detect the problems and make appropriate controls for the system immediately. To achieve this, some parameters of voltage and frequency of wind-power generation system are to be referenced. However, since the wind-power generation system is apt to be influenced by weather and load, especially when it operates disconnected with the utilities, it is difficult to have fast and accurate measurements.
This thesis thus develops diverse algorithms for voltage and frequency measurement on a digital signal processor. Then, characteristics and performance of all the algorithms are evaluated through numerical simulations. Finally, the algorithms are practically applied to an actual wind-power generation system to verify the effectiveness of the algorithms on system control.

並列關鍵字

Frequency Estimation ； Islanding ； Digital Signal Processor ； Wind-Power Generation System

參考文獻

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