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With the control technology development of household load and smart grid, household microgrid energy optimal scheduling will be an important means to provide personalized, differentiated electricity services for users. Based on the different characteristics of household microgrid load, models are established for fixed load, shiftable load and adjustable load in this paper. Considering the comfort...
Because of the constant increase of photovoltaic(PV) permeability, it is needed to configure the energy storage(ES) to reduce the instability caused by PV access of the power distribution network. So that how to configure PV and ES has become an important issue. According to timing characteristics of load and PV output under different seasons and weather conditions, the configuration model of PV and...
Considering gradually increase of wind turbine (WT) penetration and the reactive regulating capability of WT which is not fully utilized, this paper studies comprehensive configuration of different types of WT and switch capacity (SC). In order to account the time-sequence characteristic and randomness of load and natural resources, multi-state model is established. Bi-level Programming model adopting...
Based on the in-depth study of empirical mode decomposition (EMD) and support vector machine (SVM) algorithm, a model for aviation synchronous generator dynamic performance was presented. The EMD method was firstly used to denoise the input signal of the model. The SVM method was used to establish the model of synchronous generator's dynamic performance under the condition of instant load and unload...
In this paper, the numerical simulation of silo wall pressure response under the earthquake loads is carried out. The initial static pressure values both on the bottom wall and the sidewall of the models according to the angle, but the dynamic response under the earthquake loads did not differ significantly. The pressures with different wall dips under dynamic loading increase substantially the same...
Lateral spreading of liquefied ground due to strong earthquakes frequently causes serious damages to multi-piles foundations. The relative displacement of flowing liquefied soil to piles effects the lateral force on piles and the failure of piles. In this study, a 4-piles model in liquefiable soil with two kinds of local slopes is simulated numerically by the 3-D dynamics FE-FD coupled method, in...
With the emergences of distributed generators (DGs) into the electricity distribution systems, there is an increasing need to understand and quantify their impacts on distribution systems such as voltage, reliability, power quality, etc. This paper presents a novel power flow algorithm based on the equivalent current injection technique. Instead of using the impedance or Jacobian matrices, the proposed...
Power system deregulation and the shortage of transmission capacities have led to increased interests in distributed generation sources (DGs). The high penetration of distributed generation (DG) units at the distribution level have a profoundly influence on grid security, operation, planning, etc. Therefore, based on the back/forward sweep methods, this paper presents a power flow method for radial...
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