Henryk Spierewka, Tomasz E. Kołakowski
Decennary of Polish Power Grid Operator PSE-Południe against a background of 70 years' history of Polish power companies in Katowice
Energetyka 2008, nr 7, s. 479
Described is 10 years' existence of PSE-Południe against a wide historical background. Recalled is the history of Ślązel enterprise which was founded in 1938 as well as the succeeding stages of the post-war power industry reorganization. Much attention is paid to the South Power Industry Region, its structure and technical potential. Described is the process of bringing to life the Katowice Branch of PSE-Południe and its transformation into the now existing PSE-Południe engaged in operational management of the power system and its property in the allocated area as well as the grid maintenance service. Mentioned are the most important projects realized in the past 10 years.
Keywords: power industry history, Upper Silesia , PSE
Andrzej Botor, Robert Winczakiewicz
Katowice Area Dispatching Centre – yesterday and now
Energetyka 2008, nr 7, s. 487
When PSE-Południe Sp. z o.o. was founded, one of its parts was also the Operator Service Department being the successor of first the Regional and then the Area Dispatching Centre existing from 1948 in regional power industry structures. Main tasks of the ADC are: ensuring unfailing work of a transmission grid as well as rational and effective organization of grid operation, ensuring operational discipline, being ready to realize the area power system defence and restoration plans, realization of tasks charged by Transmission System Operator etc. The 110 kV network coordinated by Katowice ADC is the property of: ENION Grupa Tauron SA, EnergiaPro Grupa Tauron SA and Vattenfall Distribution Poland SA.
Keywords: Dispatching Centre, history, Silesia
Zbigniew Szymański, Piotr Grewenda, Wojciech Pindral
Outline of technological changes and telecommunication development in the Company activity area during the last 15 years
Energetyka 2008, nr 7, s. 489
Application of optical fibre cables technology and digital transmission equipment for telecommunication needs was a real revolution. Mentioned are advantages of these solutions. PSE-Południe supervises now 50 optical fibre cable routes and has 7 access nodes in SDH technology. Described are commutation systems applied in the Company. Specified are failure-free and redundant 230 V/AC feeding systems. Described is the range of telecommunication systems' modernization, guaranteed power supply and air conditioning in PSE-Południe.
Keywords: telecommunication, history, development, Silesia
PSE-Południeas the Main Contractor of the investment task: Enlargement of 220 kV distribution substation including installation of the second autotransformer in the 220/110 kV substation Wanda
Energetyka 2008, nr 7, s. 493
Given is technical specification of Wanda substation and detailed schedule of its enlargement which was realized in the years 2006-2007 and finished with acceptance in May, 2007.
Keywords: 220 kV investments, 220/110 kV substation, enlargement
Małgorzata Nowak-Gajewska, Andrzej Kania, Lucjan Bensch
Experience in thermovision diagnosis of power installations with special regard to surge arresters
Energetyka 2008, nr 7, s. 497
Thermovision diagnosis of spark surge arresters with the use of modern
thermovision systems can be treated as the supplementary one for traditionally carried out measurements while in case of modern, non-spark surge arresters as a basic one together with the method of leakage current measurement. Discussed is experience gained during carrying out thermovision diagnosis of 400, 220 and 110 kV surge arresters in PSE-Południe SA.
Keywords: diagnosis, thermovision, surge arresters
Replacement effectiveness of network elements working in local power grids
Energetyka 2008, nr 7, s. 504
Described is one of methods diminishing technical losses in distribution networks. Discussed is effectiveness criterion during rebuilding of local power network. Presented is calculation example showing the effectiveness of network elements' replacement in a proper network working time.
Keywords: distribution network, local power network, diminishing of technical losses
Feeding of secondary circuits with guaranteed voltage as an example of susceptibility to continuity of power supply
Energetyka 2008, nr 7, s. 508
Presented is solution of a problem referring to secondary circuits feeding boiler unit auxiliaries drives in one of power plants in southern Poland. Secondary circuits, i.e. control and alarm circuits of the boiler unit, are fed from a power cubicle of 230 V/AC guaranteed voltage, because – concerning the specific character of their work – they need reliable power supply. The solution was applied during boiler unit BC50 modernization in the power plant mentioned above. One of the elements of 50 MW block overhaul was replacement of the existing switchgears and cables including the switchgear feeding boiler auxiliaries. Main stress is laid on presentation and description of feeding secondary circuits of these drives.
Keywords: power plants, secondary circuits, guaranteed power supply
Jerzy Stańda, Elżbieta Wróblewska
Optimization of reagent dosage systems in the aspect of water conditioning in power industry
Energetyka 2008, nr 7, s. 513
Increase of society consciousness concerning consequences of waste disposal with no protective measures resulted in implementation of more and more rigorous requirements that companies – power industry among the others - must meet. It can be done in two ways: limit the amount of chemicals used for conditioning or invest into installations having in task minimalizing the influence of chemically active wastes on the environment. The most advantageous, from ecological and economic point of view, is minimalizing – with the help of properly controlled treatment system – the amount of substances applied for water conditioning with the simultaneous ensuring high efficiency of the process.
Keywords: water conditioning (treatment), reagents, dosage
Application of infrasound technology for cleaning boiler heating surfaces and unit auxiliaries
Energetyka 2008, nr 7, s. 516
Presented are principles of work and practical infrasounds'applications for cleaning power boiler inner surfaces, electrofilters or water heaters. Proposed are specific technical solutions available in Poland.
Keywords: infrasounds, cleaning, power boilers
Reasons and possible results of electric energy price increase
Energetyka 2008, nr 7, s. 520
Presented are many reasons of the present and expected electric energy cost increase against a background of conditions resulting from the state of our economy. Everybody will have to pay for the years with regulated and lowered prices in power industry and the period of underinvestment. Rise in prices of electric energy will undoubtedly have influence on increase of costs in industry and at household consumers. Time will show if the possible recession can take place. In Poland we have to little power reserves.
Keywords: electric energy prices, reasons and results of price increase
Aneta Włodarczyk, Marcin Zawada
Analysis of electric energy spot prices. Survey of selected time series models
Energetyka 2008, nr 7, s. 523
Investigation task of the authors is verifying the ARX-GARCH class models usefulness for description of electric energy stock price forming and their variability. Informations concerning electric energy prices on a Day Ahead Market are analysed in 24 hours' turns in the years 2004-2005 in three European energy stock markets – Spanish, German and Polish.
Keywords: electric energy prices, energy stock market
Properties of wood stored in dumps in the open air
Energetyka 2008, nr 7, s. 536
With the moment of entering the UE, Polish power plants using coal as a fuel were obliged to keep upper limits of the amount of chemical compounds and elements which can be emitted into the atmosphere during a year. With the aim to decrease the emission of harmful compounds, more and more popular fuel in power plants becomes ecological biomass. One of the problems concerning storage of big amounts of biomass is self-ignition and how to counteract it. Results of self-ignition are both energy and financial losses. Given are informations concerning self-heating of wood chips and its reasons. Presented are places in a fuel dump where self-ignition can occur, processes taking place in wet wood chips being stored in dumps and stages of biomass self-heating, eventually leading to self-ignition.
Keywords: biomass, wood chips, power plants, wood chips storage, self-ignition