microgrids are small-scale, low voltage (lv) power networks which employ renewable distribution energy resources (ders) with power electronic interfaces (peis). microgrids as single controlled units and active distribution networks require flexible control systems to ensure reliable and secure operation in different modes. these various operations of microgrid cause variations in voltage and fr...

in this paper, multi-microgrids (mmg) are considered as future smart distribution grids, in which small scale energy resources (sser) are main power generation units with small scales. optimal operation of microgrids in defined intervals is carried out to achieve economic conditions in distribution systems. the defined operating problem is optimized using a heuristic algorithm considering uncer...

Abstract In recent years, distributed generation has been fully developed, and its permeability is rising, which also brings great challenges to the reactive power regulation of distribution network. By analyzing output characteristics active supply, in this article, a multi-objective optimization mathematical model compensation established, takes economy security network into consideration. Th...

This paper presents a heuristic technique for improving the voltage profile and reducing power loss in distribution network. These components are to be maintained at certain standard boost electricity supply of The shunt capacitor placement is applied achieve sustainable electric supply. issue has been major threat A network expected operate level meet consumers’ energy demand. Power flow studi...

Penetration of distributed energy resources (DERs) such as wind, solar and battery units are rapidly increasing in distribution power system (DPS). In view grid reliability efficiency, cyber physical secure these highly important since it can directly impact operations. This paper investigates the dynamic behavior during cyber, natural strikes on reactive control DER units. Various fault scenar...

in this study, the spatial distribution of overwintered adults of sunn pest, eurygaster integriceps puton, was investigated by using dispersion parameters and indices, mathematical distribution, and regression techniques in rainfed wheat fields by sample size of 1 m2 in 2009 and 2010. the dispersion parameters including: mean-variance test and clumping parameter () showed that the overwintered ...