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http://dx.doi.org/10.5370/KIEE.2013.62.11.1495

Dynamic Reserve Estimating Method with Consideration of Uncertainties in Supply and Demand  

Kwon, Kyung-Bin (Dept. of Electrical and Computer Engineering, Seoul National University)
Park, Hyeon-Gon (Dept. of Electrical and Computer Engineering, Seoul National University)
Lyu, Jae-Kun (Wind-energy Grid Adaptive Technology Research Center, Chonbuk National University)
Kim, Yu-Chang (Dept. of Electrical and Computer Engineering, Seoul National University)
Park, Jong-Keun (Dept. of Electrical and Computer Engineering, Seoul National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.62, no.11, 2013 , pp. 1495-1504 More about this Journal
Abstract
Renewable energy integration and increased system complexities make system operator maintain supply and demand balance harder than before. To keep the grid frequency in a stable range, an appropriate spinning reserve margin should be procured with consideration of ever-changing system situation, such as demand, wind power output and generator failure. This paper propose a novel concept of dynamic reserve, which arrange different spinning reserve margin depending on time. To investigate the effectiveness of the proposed dynamic reserve, we developed a new short-term reliability criterion that estimates the probability of a spinning reserve shortage events, thus indicating grid frequency stability. Uncertainties of demand forecast error, wind generation forecast error and generator failure have been modeled in probabilistic terms, and the proposed spinning reserve has been applied to generation scheduling. This approach has been tested on the modified IEEE 118-bus system with a wind farm. The results show that the required spinning reserve margin changes depending on the system situation of demand, wind generation and generator failure. Moreover the proposed approach could be utilized even in case of system configuration change, such as wind generation extension.
Keywords
Dynamic reserve; Reserve margin; Spinning reserve; Short-term reliability of balance; Forecasting error; Generator forced outage rate; Unit commitment;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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