期刊
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
卷 15, 期 9, 页码 4818-4828出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.rser.2011.07.069
关键词
Microgrid; Small signal stability; Singular Entropy Matrix Pencil
资金
- National Natural Science Foundation of China [50907060]
- China Postdoctoral Science Foundation [20090451438]
Microgrid is an effective concept for distributed renewable energies connecting to utility grid. However, enormous challenges have also been brought into the microgrids study considering the intermittence, randomness characteristics of renewable energies. As a result, the power generations of distributed generators fluctuate frequently. Furthermore, it is difficult to obtain the parameters of microgrids accurately. Thus, the study on small signal stability of microgrids is especially important. This paper presents a review of exiting small signal stability methods for microgrids. Besides, a new approach based on Singular Entropy and Matrix Pencil is proposed. Meanwhile, its validity and effectiveness are confirmed by some examples compared with Prony algorithm. Then, the proposed method is also applied into a microgrid with an improved droop control strategy. Finally, a framework based on the proposed method for small signal stability, warning and emergency control online in microgrids is available. (C) 2011 Elsevier Ltd. All rights reserved.
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