考慮澎湖離岸式風力發電與台澎海底電纜之特殊保護系統

Special Protection System for Peng-Hu Offshore Wind Farm and Tai-Peng Submarine Cables

林士鈞(Shih-Chun Lin)

指導教授 ： 洪穎怡

中原大學/工學院/電機工程研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600515

摘要

澎湖地區為一獨立運轉之電力系統，由尖山電廠之12部柴油發電機供應全島電力，隨著澎湖電力系統負載的成長，需要裝置新電源以因應未來電力需求，可能的方法包含增設柴油機組、岸上之風力機組、大規模離岸式風場及以海底電纜連接澎湖與台灣，依照各設備裝置的可能，共有九種電源擴充情況。新機組與海底電纜加入澎湖電力系統後，會引起系統各方面的衝擊，因此需要進行電源引接各樣的衝擊評估，例如電壓變動、閃爍、諧波污染、系統安全、暫態穩定度、低頻卸載及高頻跳機等評估。
本文針對柴油機組與風力機組之激磁機及調速機建立數學模型，以探討澎湖電力系統其暫態穩定度問題，並且針對大規模之離岸式風場併入系統後，探討因其風源不穩定所導致之電壓閃爍狀況。並針對民國100年時，於各新增電源裝置之九種可能情況，利用PowerWorld Simulator模擬其電力潮流及故障電流進行各種分析，且利用PSCAD/EMTDC對於其電壓閃爍及暫態穩定度進行研究，並以特殊保護系統策略概念，規劃出低頻卸載及高頻跳機之策略，藉以提供各種裝置可能之頻估以做為未來整體評估之建議與決策。

關鍵字

離岸式風場 ； 電力潮流 ； 海底電纜 ； 特殊保護系統

並列摘要

Peng-Hu is an isolated power system without having any links with Taiwan. There is only a Gen-San power plant with 12 diesel generators located in the main island. According to the load increasing, Peng-Hu power system need to build new plants, including diesel generator, wind power generator, offshore wind farm, and submarine cables that connect Peng-Hu power system with Taiwan. By the possibility of set up the new plants, that could have nice situations. After generators and submarine cables incorporating into the power system, it caused impacts in all respects. So this study considered evaluating every phenomenon, such as voltage fluctuation, voltage flicker, harmonic, safety of system, transient stability, underfrequency load shedding and overfrequency generator tripping.
For discussing the Peng-Hu power system’s transient stability, this study established the exciter and governor’s mathematic model of the diesel and wind generator. Because of wind couldn’t be forecasted, the large-scale offshore wind farm caused voltage flicker in the power system. This study considered nine system situations in 2011. It used PowerWorld Simulator to study the power flow and fault current, and using PSCAD/EMTDC to study voltage flicker and transient stability. By the strategy of the special protection system, planning the underfrequency load shedding and overfrequency generator tripping. Certain of the advantageous results toward building the every new plant are also provided in this paper.

並列關鍵字

submarine cable ； power flow ； offshore wind farm ； special protection system

參考文獻

[10] C. C. Liu, J. Jung, G. T. Heydt, V. Vittal, and A. G. Phadke, “The Strategic Power Infrastructure Defense (SPID) System-A Conceptual Design,” IEEE Control System Magazine, Aug. 2000, pp.40-52.

[12] P.M. Anderson and B.K LeReverend, “Industry experience with special protection schemes,” IEEE Transactions on Power Systems, Vol.11, NO.3, Aug. 1996, pp.1166-1179.

[14] S. K. Salman and A. L. J. Teo, “Investigation into the Estimation of the Critical Clearing Time of a Gird Connected Wind Power Based Embedded Generator,” Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES, Vol.2, 6-10 Oct. 2002.

[21] Narayan S. Rau, “Optimization Principles,” IEEE PRESS, 2003.

[1] 胡忠興，「風力發電廠併聯於配電系統之規劃研究」，台電工程月刊，2003年9月。