نتایج جستجو برای: emtp
تعداد نتایج: 374 فیلتر نتایج به سال:
La Educación Media Técnico Profesional (EMTP) en Chile aún no ha logrado ajustar sus programas de estudio para responder a las necesidades del mercado laboral actual. Si bien se ofrecido perfeccionamiento los docentes la EMTP, existe un seguimiento y monitoreo determinar si efectivamente estos esfuerzos han permitido mejorar aprendizajes propios esta formación. El propósito considera tres objet...
During their lifespan all the primary equipment installed in power system is subjected to transients. Therefore, it necessary adequately dimension and protect equipment. However, networks with high share of renewables, electronics, cables or near GIS, failure can occur even though good practice insulation coordination are fulfilled.
 In this paper frequency transformer model presented. Suc...
Abstract When lightning intrudes into the over-voltage in 500 kV substation, wave will be introduced substation along line, which seriously affect insulation level of equipment. In this paper, firstly, working principle, characteristics, and current simulation ZnO arrester are described. Then, electromagnetic transient program (EMTP-ATP) used a GIS carried out research to over-voltage, specific...
In this paper, genetic algorithm-based approach for transient analysis of single transmission line connected to arrester is proposed. In this approach, the lightning channel striking the overhead line is first represented by a current source and this source is truncated by a finite set of frequency harmonies in time domain. Norton equivalent circuit viewed across arrester is then computed by me...
The demand for low voltage DC (LVDC) distribution systems is increasing due to the rapid development of power conversion technology, increase DC-based digital loads, and expansion distributed generation (DG). For stable operation LVDC system, it necessary develop a protection method. In this paper, fault section estimated using wavelet transform (WT) in system. classified into line bus. charact...
This work evaluates in detail the protection performance of synchronous generators against unbalanced currents. For this, a simplified power system composed generating unit with smooth poles, connected to remote through step-up transformer and dual circuit transmission line, is modeled EMTP-RV program. The results obtained show how amplitude negative sequence current influenced by type severity...
This paper put forward the inertial control strategy based on of charge and discharge supercapacitor trigger angle H-bridge which integrates photovoltaic (PV) system. The whole cascade structure is composed traditional module, Boost/Buck circuit, (SC), circuit. First, charging state energy power support SC are analysed. Then proposed. To verify efficiency strategy, a chain consists 12 unit was ...
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