Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2011.07a
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- Pages.168-169
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- 2011
The algorithm of the load flow problem for integrated distributed generation network
분산전원의 특성을 고려한 조류계산의 새로운 알고리즘 고찰
- Nguyen, Dinh Hung (Seoul National University) ;
- Nguyen, Minh Y. (Seoul National University) ;
- Nguyen, Van Thang (Seoul National University) ;
- Kim, Tae-Won (Kepco) ;
- Kim, Kern-Joong (Chungnam National University) ;
- Yoon, Yong-Tae (Seoul National University)
- Published : 2011.07.20
Abstract
The aim of this paper is to present a new algorithm for the load flow problem using modified Newton-Raphson (NR) iteration method and a approach to derive a simple formula to compensate the reactive power at some heavy load bus. The reactive power source used in this research is the DG which is adjacent to the heavy load. Phenomena of low voltages may cause the load flow calculation process to diverge. In modified NR method, low voltages will be detected and corrected before the next iteration. Therefore, the results of load flow calculation process satisfy the voltage constraint i.e. higher than the lower voltage limit or higher than the critical voltage in case the conventional load flow diverges. Linearizing the power network using PTDFs is a simple method with accepted errors. A new value of voltage at the DG terminal is computed in terms of the voltage deviation of load buses. In this approach, solving the entire system is unnecessary.
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