研究生: |
郭浤洋 Hong-yang Guo |
---|---|
論文名稱: |
龍門電廠商轉後抽蓄水力電廠調度策略及系統穩定度之研究 A Study on the Pumped Storage Unit Dispatching and Power System Stability after Commercial Operation of the Lungmen Nuclear Power Plant |
指導教授: |
郭明哲
Ming-Tse Kuo |
口試委員: |
陳南鳴
Nan-Ming Chen 吳啟瑞 Chi-Jui Wu 吳進忠 none |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電機工程系 Department of Electrical Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 113 |
中文關鍵詞: | 龍門電廠 、抽蓄機組 、調頻備轉容量 、電力潮流 、頻率穩定度 |
外文關鍵詞: | Lungmen Nuclear Power Plant, Pumped Storage Units, Frequency Regulating Reserve, Power Flow, Frequency Stability |
相關次數: | 點閱:548 下載:9 |
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電力系統運轉而言,設置足夠的備轉容量用以因應發電機組非預期的跳機事故及負載預測偏差量是非常重要的。因此電力公司必須建立一套規劃準則,以確保電力系統安全運轉並供應充足的電力與保持優良的電力品質並且降低發電成本。台灣電力公司預計於民國101年進行龍門電廠一號機商轉,以及於民國102年進行龍門電廠二號機商轉,則系統中最大發電機組將由核二廠一部機組985MW增加為龍門電廠一部機組1350MW,提升了近40%的發電量,因此若考慮在一年之中負載較低的冬季時刻,龍門電廠發生跳機事故時,則可能發生低頻卸載。
本論文即利用台電公司所提供的負載-頻率靈敏係數,計算在冬季各個時段龍門電廠跳機後系統最低頻率,估計是否會發生低頻卸載,若可能發生低頻卸載,即需使用抽蓄機組作為瞬間備轉容量。因抽蓄機組作為備轉容量的時段,系統可靠度將大為提升,因此系統可以減少調頻備轉容量的安排,以節省備轉容量的發電成本。
本論文使用PSS/E模擬軟體,分析龍門電廠併入台灣電力系統後電力潮流的改變,當龍門電廠跳機後,模擬系統頻率的變化以及調頻備轉容量是否足夠,再分析當發電機升載後,電力系統的潮流變化,最後提供合適的調度建議。
As far as power system operation is concerned, it is very important to set up enough spinning reserve to avoid an unexpected generator breakdown and the lack of electricity which comes from load forecast error. Therefore, the power company must establish a set of planning principles to make sure that the power system is capable of running safely, supplying sufficient power, maintaining superior power quality and reducing the cost of electricity. Taiwan Power Company is expected to start commercial operation for the first unit of Lungmen nuclear power plant in 2012 and the second unit will start in 2013. The largest generator in the system will be Lungmen nuclear power plant whose rated capacity is 1350MW in place of Kuosheng nuclear power plant whose rated capacity is 985MW and the capacity will be increased nearly 40%. However, if Lungmen nuclear power plant has a power outage, it is possible to have under-frequency load shedding considered in a low load in winter during a year.
This thesis uses the load-frequency sensitivity factor which was provided by Taiwan Power Company to calculate the lowest frequency of each period in winter when Lungmen nuclear power plant has a breakdown and to estimate whether there is the possibility of having under-frequency load shedding or not. If it does, pumped storage units will be taken as instantaneous reserve therefore the reliability of power system can improve dramatically during this period. As a result, systems can reduce the arrangement of frequency regulating reserve and save the cost of electricity.
This thesis also uses PSS/E simulation software to analyze the change of power flow after Lungmen nuclear power plant is incorporated into Taiwan Power System. When Lungmen nuclear power plant break down, firstly, the software will simulate the shift of system frequency and check whether the frequency regulating reserve is sufficient or not. Secondly, the change of power flow is analyzed after generators have been increased capacity. Finally, the reasonable unit commitment is suggested.
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