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Modern View
LIANG, JUN
(2)
answer(s).
Srl
Item
1
ID:
110438
Influence of generation mix on the wind integrating capability : a modeling interpretation and potential solutions
/ Yu, Dayang; Zhang, Bo; Liang, Jun; Han, Xueshan
Zhang, Bo
Journal Article
0 Rating(s) & 0 Review(s)
Publication
2011.
Summary/Abstract
The large-scale wind power development in China has reached a bottleneck of grid integrating capability. As a result, excess wind electricity has to be rejected in the nighttime low demand hours, when the wind power is ramping up. To compensate for the fluctuation of wind power, new coal-fired power plants are being constructed along with the big wind projects in the North China grids. This study analyzed why adding coal-fired generation cannot remove the bottleneck of wind integration by modeling the operating problem of the wind integration. The peak-load adjusting factor of the regional grid is defined. Building more coal-fired power plants will not increase the adjusting factor of the current grid. Although it does help to increase the total integrated wind power in the short term, it will add difficulties to the long-term wind integration. Alternatively, the coordinated resource utilization is then suggested with the discussion of both the effective pumped hydro storage and the potential electric vehicle storage.
Key Words
Storage
;
Wind Power Integration
;
Coal - Fired Generation
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2
ID:
101402
Profiling the regional wind power fluctuation in China
/ Yu, Dayang; Liang, Jun; Han, Xueshan; Zhao, Jianguo
Yu, Dayang
Journal Article
0 Rating(s) & 0 Review(s)
Publication
2011.
Summary/Abstract
As China starts to build 6 10-GW wind zones in 5 provinces by 2020, accommodating the wind electricity generated from these large wind zones will be a great challenge for the regional grids. Inadequate wind observing data hinders profiling the wind power fluctuations at the regional grid level. This paper proposed a method to assess the seasonal and diurnal wind power patterns based on the wind speed data from the NASA GEOS-5 DAS system, which provides data to the study of climate processes including the long-term estimates of meteorological quantities. The wind power fluctuations for the 6 largest wind zones in China are presented with both the capacity factor and the megawatt wind power output. The measured hourly wind output in a regional grid is compared to the calculating result to test the analyzing model. To investigate the offsetting effect of dispersed wind farms over large regions, the regional correlations of hourly wind power fluctuations are calculated. The result illustrates the different offsetting effects of minute and hourly fluctuations.
Key Words
Wind Power
;
Fluctuation
;
Correlation
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