Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1992.07b
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- Pages.945-948
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- 1992
Switching Overvoltage Analysis of KEPCO 765KV System by EMTP
EMTP를 이용한 한전 765KV 계통 개폐과전압 해석
- Shim, Eung-Bo (KEPCO) ;
- Kim, Jeong-Boo (KEPCO) ;
- Jeon, Bok-Hyeon (KEPCO)
- Published : 1992.07.23
Abstract
In this paper, switching overvoltages are analyzed for future 765kv power system using EMTP(Electro Magnetic Transient Program) and compared with TNA (Transient Network Analyzer) study results which was previously undertaken during overseas training in 1980 and 1988. The result shows the maximum of 2.10 PU at midpoint of 310Km transmission line which is higher than those of TNA study by 0.4 PU. The deviation of EMTP result from TNA is caused by limitation of nonlinear representation and also frequency dependent modeling in EMTP. Further analysis are required to get more exact switching overvoltage factors for future KEPCO 765KV system not only by EMTP but also TNA.
Keywords