spatiality assessment of groundwater pollution is very important to determine water quality condition, pollution sources and management decisions. in this case, gis and geostatistics methods can be useful tools. spatiality of groundwater quality parameters, in relation with various land uses, can be very extremely. therefore water samples from 52 wells in the kurdan area were analyzed in this s...

This paper focuses on the regulation of electricity distribution business. First, regulation principles of natural monopolies are discussed in general level. Second, different methods used to regulate the electricity distribution business in some European countries are introduced. Third, regulatory models used in Finland, Norway and Sweden are discussed in detail. The roles of efficiency benchm...

Emerging Power Quality Problems and State of The Art Solutions T HIS SPECIAL SECTION is intended to address emerging power quality problems due to integration of largescale photovoltaic and wind systems, concepts of smart grid, vehicle to grid, increased reliance on power electronic devices/equipment in residential, commercial and industrial domains, etc. Further, it aims at providing advanced ...

Voltage and current unbalance problems of power networks due to AC electrified railway systems are studied and their influences such as the voltage unbalance factor and the current negative sequence contribution factor injected to the network are calculated. Several methods can be used for reducing the power quality unbalance problems which have been proposed and the best of them is chosen by c...

This work deals with modeling and simulation of multi bus system using D-STATCOM. Voltage sag is increased by connecting a heavy load. The sag is mitigated using D-STATCOM. The circuit models and simulation results are presented. The Simulation results are compared with the analytical results. KeywordsDistribution Static Synchronous Compensator (D-STATCOM)

With the deregulation of the electric power energy market, providing power quality has become a more important concern of both power suppliers and customers. Customers require better quality with the development of digitally controlled facilities. However, there is not a specific infrastructure to motivate the design of the power system to achieve a specified level of electric power quality. Th...