Application Research of Jet Deflectors on Pelton-Type Hydro-Generators Units

doi:10.11985/2017.07.003

Abstract

Abstract:

The possible problems after the over frequency generator tripping of Nujiang power grid are analyzed. Taking the composition of hydro-generator-units in Nujiang power grid into account, the applications and effectiveness of the jet deflectors on pelton-type hydro-generators units are studied. The solutions based on the jet deflectors for frequency rising, without over frequency generator tripping, of the Nujiang isolated grid after the tripping out of interconnection line between Nujiang power grid and the main grid of Yunnan province caused by faults are proposed, which are of great significance to the secure and stable operation of Nujiang power grid.

Key words: Hydro-generators unite, over frequency generator tripping, jet deflector, isolated power grid

CLC Number:

Pu Bicai,Liu Xiaoxin,Deng Yaqi,Feng Peilei,Xu Tianqi. Application Research of Jet Deflectors on Pelton-Type Hydro-Generators Units[J]. Journal of Electrical Engineering, 2017, 12(7): 16-21.

Figures/Tables 3

References 12

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起动顺序	机组特点	起动批次	起动频率/Hz	复归频率/Hz
1	装机容量≥12.5MW,甩100%额定负荷瞬间具有最小频率加速度,折向器起动时间最短的水斗式水轮发电机组	一	51.50	51.00
1	装机容量≥12.5MW,甩100%额定负荷瞬间具有最小频率加速度,折向器起动时间最短的水斗式水轮发电机组	二	52.00	51.50
2	12.5MW>装机容量≥7MW,甩100%额定负荷瞬间频率加速度不大,折向器起动时间最短的水斗式水轮发电机组	三	52.50	52.00
2	12.5MW>装机容量≥7MW,甩100%额定负荷瞬间频率加速度不大,折向器起动时间最短的水斗式水轮发电机组	四	53.00	52.50
3	装机容量≥12.5MW,折向器起动时间长的水斗式水轮发电机组	五	54.00	53.00
4	装机容量<7MW,折向器起动时间长的水斗式水轮发电机组	六	55.00	54.00