This paper deals with possible algorithms, which may ensure numerical stability of Newton-Raphson method in load flow analysis. Although the Newton-Raphson method is frequently used, it may have difficulties to obtain convergence. Oscillations, divergence or even convergence to unfeasible ...

This article deals with radiant heating systems. It also deals with the heating of wall-mounted radiant panels, ceiling-mounted radiant panels and radiant floor heating. Advantages of radiant floor heating are showed as well. Various types of radiant floor heating are mentioned a...

This paper deals with mathematical modelling of doubly-fed asynchronous generator for wind power plant by the space phasors method. In this paper, the basic principles and characteristics of the system are briefly described, the mathematical description of this machine is shown, ...

This paper deals with support and ancillary services which are provided by CEPS a. s. Czech republic System service ensured a balance between production and consumption of electricity and the quality and control of the entire electricity system. The aim of the paper is to ...

This work deals with electromagnetic interference high-voltage equipment. Are described sources of interference and their effects. Furthermore, there are practical ways to describe constraints HF noise.

This paper deals with new methods of measurement in an electrical grid. The aim of the paper is to explain the way of distant measuring and shows the hardware solutions. AMR & AMI are very important parts of the smart grid concept.

This paper describes power loss factor measuring of turbogenerator bars. Then it focuses in influence of measuring electrode setting to power loss factor magnitude. It was tested 16 measuring electrode settings. Measurements showed weaknesses in certain methodologies and therefore were proposed&#...

The nuclear power plants use for supply of onsite power system the normal, standby and emergency sources. The subject of my report is the optimalization of winding connection of lower voltage of auxiliary normal and standby transformers. The suppliers use the delta connectio...

This paper deals with the essential function of generator circuit breaker in power plant. The aim of the paper is to analyse very demanding current and voltage conditions which are directly influencing the reliability of energy generating process. The development in the fiel...

This article describes how can be shielding effectiveness (SE) measured and calculated. There are mentioned systems for SE measuring and possibility of their usage in our laboratory. Then there are introduced some factors influencing shielding such as holes and gaps in cover or cav...

This paper deals with new technology in industrial heating processes – magnetic heating of billets. The aim of the paper is to explain the principle of this technology, construction of the industrial device and differences between classical induction heating and magnetic heating of ...

This paper describes the opportunity in the Pilsen region to build complex for waste incinerator. The new waste incinerator in Chotíkov could by have positive impact on the environment in this region. Building of this complex took a few months. It will be the equipment, w...

This paper describes the opportunity in the energy generation and energy use by the Pilsen heat power station and their positive impact on the environment by the biomass integration for energy generation. Building of this complex took 20 month. It was the equipment, which make...

This paper is focused on problematic of the utilization of the heat pumps. Its first part is dedicated to this method of the heating generally. The principle of the heat pumps, their basic part and their division are presented here. Then the heat pump market i...

The main purpose of this paper is to analyze measured data from photovoltaic system placed on the building of Faculty of Electrical Engineering in Pilsen, to figure out optimal inclination of installation, to evaluate measured and calculated characteristics and to set possible way ...

There is an extraordinary development and faith nowadays in the field of photovoltaic technology, due to its parameters. This kind of technology is perfect to use in the conditions of an isolated operation network, because of its independence from power grid, usage of primary ...

This paper deals with influences of the wind power plants connection on the operation of distribution and transmission systems. There are briefly explained and described the most severe and significant of these unfavourable impacts in term of local and system.

Problems of the photovoltaic cells becomes more and more topical in connection with sharply rising prices of the electrical energy and thus the new technology of solar cells produce are invented. This paper is focused on problematic of one of the new trends in the&...

Solar energy refers primarily to the use of solar radiation for practical ends. However, all renewable energies, other than geothermal and tidal, derive their energy from the sun. Solar technologies are broadly characterized as either passive or active depending on the way they cap...