POPCZYK J.
Present Position of Great Consumers in the Electric Energy Market in Poland
Energetyka 2003, No. 7, p. 443, 1 fig.
In Poland great consumers, otherwise than in the countries which already have introduced radical reforms in the power industry (Great Britain, Germany), at present profit from competition in the electric energy market in little grade. It is first of all a result of fact that this group of market participants is not organised properly and is lack of activity for implementation by the government proper regulations assuring work of market mechanisms, particularly assuring not allowance an increase of stranded costs, mending the transmission payment and repairing balancing market.
OKRAJNI J., MUTWIL K., CIEŚLA M., SKIBIŃSKI T.
Durability of Pipelines Influenced by Mechanical and Thermal Forces
Energetyka 2003, No. 7, p. 447, 6 figs, 46 refs
Presented are some problems of pipeline strength calculations. At a summary there is stated that there is up-to-date not solved methodologically the problem of assessment of residual durability for elements influenced by mechanical forces. There are not defined also unequivocal criteria of assessment of material condition after long time of use.
KAROLAK J.
Connection of Condenser Batteries for Reactive Power Compensation using the Aid of Vacuum Circuit Breakers
Energetyka 2003, No. 7, p. 457
(Bulletin of the Instytut Energetyki p. 9),
4 figs, 3 tabs, 14 refs
Occurring of great and reiterating over-voltages at igniting switching off condenser batteries requires proper chosen over-voltage limiters. A substantial problem at the choice of over-voltage limiters for protection the condenser battery is to assess properly an energy discharged in the limiters during their operation in order to assure their reliable operation and adequate protection level.
PEWCA W.
Calculated Verification of Transformer Strength against Short Circuits
Energetyka 2003, No. 7, p. 464
(Bulletin of the Instytut Energetyki p. 16), 3 figs, 29 refs
Choice of verification method of short circuit strength influencing consi-derable the price of a transformer should be a matter of an agreement in a contract between a client and a manufacturer. Choosing it one should know that short circuit test is a special test charging with costs the client usually. The manufacturer however can not expect that the IEC 60076--5:2000 standard relieves him of elaboration and making better it calculation methods.
BUĆKO P.
Role of Balancing Market in Shaping Competitive Energy Markets in Poland
Energetyka 2003, No. 7, p. 475, 1 fig., 6 refs
A balancing market operating efficiently should be a base for development of other competitive segments of the market and should not make a fence for development of energy stock exchange independent on a system operator.
PIECHOTA J.
Institution of Concession in Polish Power Law
Energetyka 2003, No. 7, p. 481, 6 refs
DAROWICKI K., KRAKOWIAK S., SZCZĘSNY R.
Non-Destructive and Quick Assessment Method of Rubber Lining Condition in the Flue Gas Cleaning Plants
Energetyka 2003, No. 7, p. 487, 7 figs, 3 tabs, 10 refs
Designed and constructed measurement system enable to conduct non-destructive tests with an electro-chemical impedance spectroscopy method at conditions in situ. Proposed model of rubber lining degradation in conditions of absorber operation enable to assess the penetration depth of the protection by the water on the base of measurement electric capacitance of the lining. Worked-out tests show conformity of the electro-chemical test results with ones achieved with the use of the gravimetric method.