<span lang="EN-US">Twelve-pulse rectification system had been widely integrated in today’s DC traction power sub-station (DC-TPSS). This configuration successfully mitigated low order harmonic distortion. As some research findings confirmed that the dc voltage and current ripple factors may further minimize by increasing number of pulses to 18, 24, or 36. paper presented a simulation stud...

IEC61850 communication standard for digital substation automation creates a new way to think about conventional protection scheme and configuration of substation. The presence of communication link in process bus makes a revolutionary change for future digital substation. This paper discusses briefly about process bus architecture and presents a new approach of thinking in busbar structure to m...

The power system training simulation software, exist in the market, emphasis on the network structure and flow calculation without the local details or equipment operation, or focus on one or two substations, but ignoring the power of the substation. With more and more complex structure of the domestic power grid, and increasing scale of power, the existing power system simulation software cann...

Variable frequency transformer (VFT), introduced recently is a flexible asynchronous ac link which is used in power transferal process between asynchronous power system grids. VFT was first installed at Langlois substation, which interconnects the Hydro-Québec (Canada) and New York (USA) systems. The torque of the rotary transformer is externally altered in order to control the direction and ma...

This paper presents a comparative study of the electricity consumption (EC) in an urban low-voltage substation before and during the economic crisis (2008-2013). This low-voltage substation supplies electric power to near 400 users. The EC was measured for an 11-year period (2002-2012) with a sampling time of 1 minute. The study described in the paper consists of detecting the changes produced ...

-This paper Discuss about the problem occurring in the medium voltage distribution network such problems reactive power, harmonics and unbalanced load current compensation of Medium voltage Distribution systems. It proposes a simple and inexpensive solution to enhance power quality when a particular connection to the high voltage transmission network. It presents the design of a active power fi...

This paper investigates the maximum photovoltaic (PV) penetration limits on both overhead lines and underground cables medium voltage radial distribution system. The PV limit is estimated considering bus (1.05 p.u.) feeder current ampacity (1 p.u.). All factors affect max are investigated in detail. Substation voltage, load percentage, power factor, system frequency (50 Hz or 60 Hz) analyzed. a...

The railway system is one of the safest, most efficient, and environmentally friendly means land transport for people goods. However, as demand mobility has increased, current shown some weaknesses, requiring an increase in catenary power order to be able supply longer trains faster locomotives, well rail traffic. This paper proposes a control algorithm implemented sectioning post-Rail Power Co...