전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제60권6호
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  • Pages.1112-1121
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  • 2011
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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독립운전 마이크로그리드의 능동형 동기 투입 제어에 관한 연구

Study on the Dynamic Synchronizing Control of An Islanded Microgrid

  • 투고 : 2011.04.08
  • 심사 : 2011.05.24
  • 발행 : 2011.06.01
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초록

A microgrid is an aggregation of multiple distributed generators (DGs) such as renewable energy sources, conventional generators, and energy storage systems that provide both electric power and thermal energy. Generally, a microgrid operates in parallel with the main grid. However, there are cases in which a microgrid operates in islanded mode, or in a disconnected state. Islanded microgrid can change its operational mode to grid-connected operation by reconnection to the grid, which is referred to as synchronization. Generally, a single machine simply synchronizes with the grid using a synchronizer. However, the synchronization of microgrid that operate with multiple DGs and loads cannot be controlled by a traditional synchronizer, but needs to control multiple generators and energy storage systems in a coordinated way. This is not a simple job, considering that a microgrid consists of various power electronics-based DGs as well as alternator-based generators that produce power together. This paper introduces the results of research examining an active synchronizing control system that consists of the network-based coordinated control of multiple DGs. Consequently, it provides the microgrid with a deterministic and reliable reconnection to the grid. The proposed method is verified by using the test cases with the experimental setup of a microgrid pilot plant.

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피인용 문헌

  1. Connected Characteristics for Small Generation Source of Low Voltage Model Grids vol.27, pp.2, 2013, https://doi.org/10.5207/JIEIE.2013.27.2.045