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Below‐surface horizontal pore gas velocity profiles in response to above‐surface wind conditions were measured for 16 combinations of wind speed (1.4–5.7 ms−1) and wind gust frequency (0–1 Hz) in four porous media with different particle size (0.6–10 mm), yielding 64 combinations of wind condition and porous medium using a recently developed experimental gas tracer tracking method. Experiments were...
In recent years, more and more inter connected large-scale wind farms and ongoing deregulated environment take many challenges to transmission network expansion planning (TNEP). These challenges lie not only on more uncertainties of power flow in network but also on difficulty to compromise behalf of all new key stakeholders of power utilities. A novel algorithm is proposed in this paper. Firstly...
With large-scale integration of wind power, load flow distribution is highly uncertain. It is unrealistic to adopt traditional deterministic load flow calculation for system operation. What is more, load flow in some transmission lines may be increased to a level where a random event could cause the network collapse. A method of combined cumulants and Gram-Charlier expansion (CCGCE) to calculate probabilistic...
Wind power is accounting for a large amount in power generation nowadays. In the mean while, with the enhancement of industrial and residential requirement, power quality problem is paid more attention than ever before. It becomes an important problem for power system industry. This paper is based on a real power quality project in Jiangsu Province, China. Monte Carlo method is used firstly to simulate...
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