微電網中具不良電力品質之區域間同步併聯控制器設計

Controller Design for Synchronization between Poor Quality Zones in a Microgrid

曾韋翔(Wei-Hsiang Tseng)

指導教授 ： 洪穎怡

中原大學/電機資訊學院/電機工程研究所/碩士(2017年)

https://doi.org/10.6840/cycu201700841

摘要

一個包含分散式發電的微電網通常都會與大電網作連接並提供電源給負載，而微電網和微電網之間的公共耦合點必須符合相關標準。隨著日益趨重的微電網發展，若考慮兩個微電網進行同步併聯時，也需顧慮其暫態響應之影響。當微電網由孤島模式啟動時，不同的兩個微電網不論電壓幅值、相角都不盡相同，此時微電網變成一個電壓不平衡和失真的系統。因此，本論文提出了考慮分散式發電三相電壓不平衡和諧波電壓的分散式發電源同步控制器。本文以傳統的鎖相迴路為基礎進行微電網與微電網之間的同步併聯， 最後在OPAL-RT進行即時模擬，以驗證本文所提出方法的可靠性。

關鍵字

微電網 ； 同步併聯 ； 諧波分量 ； 不平衡 ； 分散式發電

並列摘要

A microgrid including distributed generation sources (DGS) is generally connected to the other microgrid to provide power to its loads. With the development of microgrids, the influence of transient response is needed to be considered. When microgrids are in their isolated modes, voltages and phase angle are totally different from each other. At the meantime, the microgrids become weak systems with unbalanced and distorted voltages. This thesis presents a synchronization controller for the DGS considering imbalanced three-phase voltages and harmonic voltages. The proposed method can be implemented without altering the traditional phase-locked loop (PLL) circuit. Finally, the proposed synchronization controller is realized using OPAL-RT real time digital simulator.

並列關鍵字

Microgrids ； synchronization ； harmonics ； unbalanced ； distributed generation

參考文獻

[13] 呂學德，以同時擾動隨機近似法進行風場永磁同步發電機之最大功率追蹤控制，中原大學電機工程學系碩士論文，民國95年7月。

[15] 吳思達，微輪機發電系統動態分析，國立高雄應用科技大學電機工程學系碩士論文，民國96年6月。

[5] Balaguer, I.J. ,Qin Lei , Shuitao Yang , Supatti, U. , Fang Zheng Peng, “Control for Grid-Connected and Intentional Islanding Operations of Distributed Power Generation,” IEEE Transactions on Industrial Electronics, Vol. 58, No. 1, pp. 147–157, 2011.

[7] L.D. Zhang, L. Harnefors, and H.P. Nee, “Power synchronization control of grid-connected voltage-source converters,” IEEE Trans. on Power Systems, vol. 25, no. 2, pp. 809-820, May 2010.

[8] Vodyakho, O. , Edrington, C.S. , Steurer, M. , Azongha, S. , Fleming, F.,“Synchronization of three-phase converters and virtual microgrid implementation utilizing the Power-Hardware-in-the-Loop concept ,”IEEE Applied Power Electronics Conference and Exposition (APEC), 2010.