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- Title
Voltage Stability Assessment of a Campus DC Microgrid Implemented in Korea as a Blockchain-Based Power Transaction Testbed.
- Authors
Hwang, Hyeonseok; Lee, Soo Hyoung; Choi, Donghee; Choi, Sangbong; Sung, Backsub
- Abstract
Recently, the generalization of P2P (peer-to-peer) technology with enhanced security due to blockchain technology and the expansion of renewable energy-based distributed energy resources have led to blockchain technology being applied in power transactions, thus giving the potential to become a new platform for DC microgrid operation. Meanwhile, the voltage of a DC microgrid represents the balance of energy supply and demand and also serves as a stability index. The balance is represented as a steady state; the stability is represented during and after events. This paper examines the stability of the DC microgrid built on a university campus in Korea and, in particular, the blockchain technology-based power transactions performed in the DC microgrid. The test is based on the pre-planned transaction schedule applied in the DC microgrid. The transaction schedule has used day-ahead and real-time bidding data. Although many technologies are included in the project, this paper focuses on the voltage stability of the DC microgrid. In addition, the DC protection is applied and evaluated. To consider general DC protection, the DC breaker was simplified with several IGBTs, diodes, capacitors, and arrestors and was designed to interrupt the fault current within five milliseconds. The stability was evaluated using a PSCAD/EMTDCTM.
- Subjects
SOUTH Korea; MICROGRIDS; POWER resources; REAL-time bidding (Internet advertising); ENERGY consumption; VOLTAGE
- Publication
Energies (19961073), 2023, Vol 16, Issue 21, p7297
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en16217297