研究生: |
林峻煌 Chun huang Lin |
---|---|
論文名稱: |
水力發電機組調速控制系統之研究 The Study of Governor Control System for a Hydro Power Station |
指導教授: |
江茂雄
Mao-Hsiung Chiang |
口試委員: |
蔡明忠
Ming-Jong Tsai 鍾清枝 Tsing-Tshih Tsung |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 自動化及控制研究所 Graduate Institute of Automation and Control |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 73 |
中文關鍵詞: | 導翼 、電氣調速機 、水輪機 |
外文關鍵詞: | hydraulic and electric control system, governors |
相關次數: | 點閱:191 下載:0 |
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由於目前台灣水力電廠之電氣調速機皆外購,其控制器及相關設
備均由許多功能不同之控制卡片組成,當控制卡片故障需更換零件
時,由於該設備不普遍,故備品無法於一般市場購得,而需向原廠採
購,或將故障之控制卡片送修,但因原廠索價昂貴,送國外修理亦耗
時,且技術受廠商限制,逐有自行研製整套調速機(含伺服壓油及電
控系統)之構想。本論文主題是針對台電公司水力發電廠之水輪發電
機速度控制裝置,即導翼調速機(Governor),於不同作業要求下應有
之反應研究,並進一步自行開發調速機。由於調速機系統對水輪發電
機性能表現具樞鈕地位,故如何能使水輪發電機轉速變化符合系統頻
率之變動範圍內及速度上升率之規定,且可配合電廠自動化系統之建
立,達到機組運轉安全及節省人力的應用目標。本文首先是介紹調速
機之原理及分析調速機之組成以及運轉中之需求,進而研究數位式調
速系統架構及運作流程。本研究目標在研製數位式調速機控制系統,
並能實際應用於現有水力發電之不同調速系統,將有助於台電公司調
速機備品的統一,並建立獨立的相關技術。
本研究對調速機控制器所使用之控制理論以PTI(Power
Technology Institute)開發之”HYGOV”控制模式為主,此控制模式廣範
被應用於水輪調速機。利用其成熟之控制理論為基礎,實際製作調速
機壓油伺服系統及電控系統等相關軟硬體設備,並安裝於台電公司東
部一小型水力發電廠,試運轉結果調速機各動作特性及功能均符合要
求,故已達成本文之目標,該調速機目前已實際加入系統運轉,期望
經由本研究經驗將成果擴展至其他水力電廠之類似機組。
All the governors used in hydro power stations of Taiwan power
company were supplied by power equipment manufacturers .The
governor consists of many different IC cards, and those IC cards are not
available in Taiwan. Therefore, TPC had to purchase the spare parts from
abroad in case the parts were broken .The cost of governor replacement is
very high and the repair duration is unpredictable, so this is the reason to
develop a governor system(include servo hydraulic and electric control
system). This study aims to investigate the proper response of the
governor in different operation demands for hydro power plant. The
response and performance of the governor system are very important
during the operation .The function of the governor is to regulate the speed
changing rate of the generator by system frequency variation and speed
increase rate.At the same time the automation of power station is
established, so that the operation is safer and more efficient. This thesis
first described the principles and demands of the governor , then studied
the theory and structure of digital governor system. The final purpose is
to develop a flexible digital governor system and apply to different hydro
power stations.
The theory of the new controller is based on the control model
“HYGOV” provided by the PTI. The HYGOV model is widely applied to
governor for water turbine in the world for many years. According to the
theory we develop the hardware and software for new governors of
IV
hydraulic servo system and electrical control system .During the field
testing, The new designed governor was installed in a hydro power
station in Taiwan power company. After running test the function and
performance of the governor met the demands as we expected before.
Now the new governor is operating very well in plant. In the near future
we hope the technology and new design can be applied to other similar
hydro power station.
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