Assisstant Chief Technologist, Federal Polytechnic Mubi
Development in any country is totally dependent on the availability of sustainable electrical power. Due to epileptic power supply in Nigeria, Generation, transmission, distribution, and usage of energy are to be optimized for the proper conservation of energy. Mainly Nigerian electricity is generated from different sources like hydro power plants, thermal power plants, and gas generating plants. Presently, the epileptic power supply and long time fault detection during distribution is a very serious problem. Also vandalisation of transmission lines, gas pipe lines to generating stations and shortages are common in Nigerian electrical distribution systems. It is therefore paramount to implement method for power distribution automization. This paper discussed ways to modernize the present systems with SCADA for automatic control of distribution systems. Though, Nigerian power system uses manual tap changer which increase and encourage power outage with less safety to the system. Therefore, this paper suggested automatic tap changer which maintains the voltage of the system and thus reduces manpower.
Abstract: Dielectric measurements on formamidinium lead halide perovskites, FAPbCl3 and FAPbBr3, compared to those of MAPbCl3 and previously reported MAPbBr3, reveal the strongly suppressed temperature dependence of dielectric constants in FA compounds in the temperature range of approximately 140–300 K. Although the behavior of dielectric constants of FA compounds for temperatures <140 K resembles that of the MAPbX3 system, the absence of any strong temperature dependence in sharp contrast to MA analogues in the higher temperature range up to room temperature suggests that the formamidinium (FA) dipoles are in a deep-frozen glassy state unlike the MA dipoles that rotate nearly freely in the temperature range relevant for any photovoltaic application. This observation is further supported by the temperature-dependent single-crystal X-ray diffraction (XRD) results.
Pub.: 23 Feb '18, Pinned: 11 Mar '18