https://papers.itc.pw.edu.pl/index.php/JPT/issue/feedJournal of Power Technologies2024-03-15T22:32:25+00:00Jaroslaw Milewskijpt.chief.editor@itc.pw.edu.plOpen Journal Systems<p>ISSN: 2083-4187, E-ISSN: 2083-4195</p> <p><strong>Impact Factor: 0.6</strong></p> <p><strong><a href="http://ip-science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&Full=journal%20of%20power%20technologies">Master Journal List by Thomson Reuters</a></strong></p> <p><strong>Points by Polish Ministry of Science and Higher Education: </strong></p> <ul> <li><strong>12 (old scoring)</strong></li> <li><strong>40 (new scoring - since 2019)</strong></li> </ul> <p>The <strong>Journal of Power Technologies </strong>provides an interdisciplinary forum on all aspects of the science, technology and developing of turbomachinery, boilers, hydro power, nuclear energy, fuel cells, renewable energy, thermodynamics, including their applications in:</p> <p>• Stationary Power Plants<br>• Aircraft Engines<br>• Process Equipment<br>• Refrigeration Systems<br>• Electrical Engineering<br>• Combustion</p> <p>Types of Contributions:<br>• Original research papers within the scope of the journal<br>• State-of-the-art reviews<br>• Feature articles<br>• Conference proceedings (selected papers)</p> <p>Archive of the Journal is now availiable on-line! All published articles are digitilized. The archive is complete.</p> <p> </p>https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1853 DC current oscillations reduction in MMC-HVDC system2024-03-15T22:32:25+00:00kamran hafeez, Dr.voltagehigh@hotmail.comAlex Van den Bossche, Prof.DrAlex.VandenBossche@UGent.be<p>Modular multilevel converter (MMC) is a type of voltage source converter (VSC) that offers several advantages, permitting it a suitable technology in high voltage direct current (HVDC) transmission systems. The conventional non-energy based control method; current does not manage capacitor energies inside MMC modules and produced DC current oscillations. Whereas in energy based control methods, oscillations in DC currents reduces as differential currents are controlled. In this paper a Proportional resonant (PR) controller is designed to reduce oscillations in a DC-link of an HVDC system using non-energy based control method. It reduces oscillations by injecting even order harmonics in MMC. The proposed method is tested on a symmetrical monopole point-to-point MMC-HVDC system using PSCAD simulation software. Furthermore, the proposed method is also compared with a conventional Repetitive Current (RC) controller using bode plots. Analytical and simulation results validate the proposed method.</p>2024-03-15T22:32:24+00:00##submission.copyrightStatement##https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1444 A review on demand response based ancillary services offered by industries2024-03-09T22:54:11+00:00Ahmad Ghasemiaghasemi@scu.ac.ir<p>Industrial power consumers have a considerable share of the global power demand; as a result, effective solutions have to be adopted to optimize the industrial power consumption. Demand response Programs (DRPs) provide such solutions. These programs are growingly studied as the industrial power consumption has increased and the implementation costs of the new technologies have decreased in recent years. DRP implementation reduces the dependency on the expensive energy storage technologies and flexible backup power sources. It seems that, DRP is not widely used in industry, yet its benefits are not practically exploited. The present work reviews the implementation of DRPs in industry and introduces the opportunities of industries for offering ancillary services to the market. Then, the industries which highly suit the specific kind of industrial DRPs are introduced and their processes are analyzed from the DRP point of view. Next, the DRP projects are continentally categorized and the advancements of different countries in specific kind of industrial DRPs are noted. Finally, the discussions and conclusion are presented.</p>2024-03-09T00:00:00+00:00##submission.copyrightStatement##https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1850 Trends and prospects in lead-acid battery developments2024-03-13T19:21:39+00:00Piotr Andrzej Ryśprys@ch.pw.edu.plMaciej Siekierski, dr hab. inż.maciej.siekierski@pw.edu.plMariusz Kłos, dr hab. inż.mariusz.klos@pw.edu.plPiotr Moszczyński, mgr inż.piotr.moszczynski@bater.pl<p>In the recent years the interest in lead-acid batteries has resurfaced, amidst the rising need for power storage technologies spanning to not only mobile, but as well, stationary applications. While the lithium-ion batteries remain one of the most common power sources in today’s western world, due to many concerns regarding various shortcomings of the said technology alternatives are often discussed. There is push for adapting lead-acid batteries (as part of the advanced lead acid battery initiative) as replacement for the lithium batteries in the non-western nations, as well as, in the USA reflects, therefore, predominantly to their lower price and reliability in hotter climates. Furthermore – due to the rising needs for uninterrupted power delivery systems, new designs of such are being developed and implement in the western world in hope of meeting the demands of the market. As a result new additives to electrode material, as well as, battery designs have been developed and are currently being considered for inclusion in the modern lead-acid battery construction.</p>2024-03-13T00:00:00+00:00##submission.copyrightStatement##https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1493 Simultaneous Sitting PVU and DSTATCOM in Distribution Grid Considering the Effect of Geographical Condition2024-02-10T19:43:50+00:00BABAK MOZAFARImozafari@srbiau.ac.irMansour Hosseini FirouzHosseini_firooz@yahoo.comFarshid ShalchiFar.shalchi@yahoo.com<p>This paper proposes a model to allocate photovoltaic unit (PVU) and distribution static compensator (DSTATCOM) that incorporate the operation effect of PVU in sizing and sitting problem. The model is based on the dynamic assessment of PVU production and the effect of it on placement of PVU and DSTATCOM. Geographical conditions are interfered in placement problem of PVU and DSTATCOM simultaneously. The model is verified in a multi-objective form. The multi-objective problem is formulated based on voltage stability, liability, power loss and total cost of PVU and DSTATCOM. This problem is solved by employing optimization techniques and the results of optimization processes are tested in different scenarios. Uncertainty in network loads is an inevitable task that should be considered in network planning. Uncertainty in the presented model has been defined as a set of divided parts in the presented model. The proposed model has been evaluated on two test systems, 30 bus and 69 bus. The obtained results indicate that the presented model can be employed to study the intermittent behavior of PVU in placement problem.</p>2024-02-10T19:42:05+00:00##submission.copyrightStatement##https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1666 Heat Flux Distribution Estimation for CSP Applications2024-03-10T16:50:26+00:00Konstantinos Stokosk.stokos@cyi.ac.cyEvgeny Votyakove.votyakov@cyi.ac.cyCostas Papanicolascnp.energy@cyi.ac.cy<p>In this paper the concept of a new method for the estimation of the heat flux distribution and the total power in CSP applications is presented. This method requires appropriate analysis of the temperature evolution on a target, or directly on a receiver. A 3-D thermal conduction model with boundary conditions to take into account the convection and radiation losses has been developed. A parametric analysis was performed and we checked how the physical parameters affect the applicability of the method. Having proven numerically the potential of this method, it was experimentally implemented in the central tower CSP plant of The Cyprus Institute at PROTEAS facilities successfully. Finally, experience gained from the numerical and experimental application of this method is discussed.</p>2024-03-10T16:50:24+00:00##submission.copyrightStatement##https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1829 Emergy analysis of energy transition from coal to renewable at chicken farm2024-03-05T11:04:03+00:00Robert Junga, Drr.junga@po.edu.plJanusz Pospolita, Prof.j.pospolita@po.edu.plAnna Kuczuk, Dra.kuczuk@po.edu.plMariusz Tańczuk, Drm.tanczuk@po.edu.pl<p>The paper presents an emergy analysis of the poultry farm regarding shifting energy sources from fossil fuels to biomass generated onsite in broilers and hen eggs rearing systems. It has been found that the manure produced on the farm has sufficient energy potential to replace the currently used energy carriers, both for heating and electricity supply. Replacing the currently used conventional energy resources with chicken manure will increase the emission charges. However, implementation of low-emission combustion techniques can help with reducing the emissions. Emergy analysis showed that for the conventional energy mix used in the farm, the Renewability Index (REN) is 0.5797, the<br>Environmental Loading Ratio (ELR) is 171.49 and the Emergy Yield Ratio (EYR) has a value of about 1. If energy carriers are replaced by chicken manure, the REN may increase by 6.19% and the ELR may decrease by 6.11%. These relatively small changes should be considered in the context of the large scale of chicken production in Poland.</p>2024-03-05T11:02:58+00:00##submission.copyrightStatement##