The inertia-free stand-alone (IFSA) microgrid is the new small power grid without synchronous generators equipped in conventional power systems. In other words, this system has the only converter-based-generators (CBGs) based on energy storage devices and renewable energies. Therefore, it requires a new CBG control to provide strong voltage reference for the CBGs connected to the point of common coupling (PCC). This is because the IFSA microgrid is subject to a weak system such that it cannot maintain its rated frequency and/or bus voltage with the conventional real and reactive power controllers, which usually get their references from the PCC. This paper proposes the innovative conceptual approach for distributed coordination in the IFSA microgrid by applying the synchronized global positioning system (GPS) time to the CBGs. Moreover, it is verified that the proposed physical structure of IFSA microgrid makes it possible for all CBGs to share the real and reactive powers effectively. As the result, the proposed CBG control can provide the robustness, which is strongly required in the IFSA microgrid, based on timely outage management and restoration process. Several case studies are carried out to verify the effectiveness of proposed CBG controller.
|Title of host publication||2017 IEEE Industry Applications Society Annual Meeting, IAS 2017|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||8|
|Publication status||Published - 2017 Nov 8|
|Event||2017 IEEE Industry Applications Society Annual Meeting, IAS 2017 - Cincinnati, United States|
Duration: 2017 Oct 1 → 2017 Oct 5
|Name||2017 IEEE Industry Applications Society Annual Meeting, IAS 2017|
|Other||2017 IEEE Industry Applications Society Annual Meeting, IAS 2017|
|Period||17/10/1 → 17/10/5|
Bibliographical noteFunding Information:
This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2016R1E1A1A-02920095) and in part by the Power Generation & Electricity Delivery Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20171220100330).
© 2017 IEEE.
All Science Journal Classification (ASJC) codes
- Industrial and Manufacturing Engineering
- Control and Optimization
- Energy Engineering and Power Technology
- Control and Systems Engineering
- Electrical and Electronic Engineering