Academic literature on the topic 'Reaktiv effekt'
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Journal articles on the topic "Reaktiv effekt"
Chalim, Abdul, Agung Ari Wibowo, Ade Sonya Suryandari, Muhammad Muhajjir Syarifuddin, and Moh Tohir. "Studi Kinetika Reaksi Metanolisis Pembuatan Metil Ester Sulfonat (MES) Menggunakan Reaktor Batch Berpengaduk." Jurnal Teknik Kimia dan Lingkungan 1, no. 1 (October 24, 2017): 28. http://dx.doi.org/10.33795/jtkl.v1i1.23.
Full textRahkadima, Yulia Tri, and Qurrota A'yuni. "PRODUKSI BIODIESEL DARI DEDAK PADI SECARA IN SITU DENGAN TEKNOLOGI MICROWAVE." Jurnal Kimia Riset 4, no. 2 (December 31, 2019): 106. http://dx.doi.org/10.20473/jkr.v4i2.16047.
Full textFakhry, Muhammad Naufal, and Suprihastuti Sri Rahayu. "Pengaruh Suhu pada Esterifikasi Amil Alkohol dengan Asam Asetat Menggunakan Asam Sulfat sebagai Katalisator." Jurnal Rekayasa Proses 10, no. 2 (November 20, 2016): 64. http://dx.doi.org/10.22146/jrekpros.33339.
Full textBudiman, Arief, Alita Lelyana, Daniar Rianawati, and S. Sutijan. "Biodiesel production from Palm Fatty Acid Distillate (PFAD) using reactive distillation." Jurnal Teknik Kimia Indonesia 11, no. 2 (October 2, 2018): 108. http://dx.doi.org/10.5614/jtki.2012.11.2.7.
Full textGunawan, Melia Laniwati, and Hendrik Susanto. "Dehidrasi N-Butanol menjadi senyawa butena pada katalis molecular sieve 13X dalam reaktor unggun tetap." Jurnal Teknik Kimia Indonesia 6, no. 2 (October 2, 2018): 642. http://dx.doi.org/10.5614/jtki.2007.6.2.7.
Full textPrakoso, Tirto, Danu Wicaksana, Roy Winarso, and Tatang H. Soerawidjaja. "Sintesis minyak goreng sehat (Diacylglycerol)." Jurnal Teknik Kimia Indonesia 6, no. 2 (October 2, 2018): 595. http://dx.doi.org/10.5614/jtki.2007.6.2.1.
Full textBudhi, Yogi Wibisono, and Mohammad Effendy. "Pemanfaatan emisi gas metana dari stasiun kompresor sistem perpipaan gas alam sebagai sumber energi termal." Jurnal Teknik Kimia Indonesia 8, no. 1 (October 2, 2018): 6. http://dx.doi.org/10.5614/jtki.2009.8.1.2.
Full textSumardiono, Siswo, Listiyana Riska, Bakti Jos, and Isti Pudjiastuti. "Effect of Esterification on Cassava Starch: Physicochemical Properties and Expansion Ability." Reaktor 19, no. 1 (May 10, 2019): 34–41. http://dx.doi.org/10.14710/reaktor.19.1.34-41.
Full textFitriyani, Lely, Edwan Karadena, and Sukandar Sukandar. "Solid Concentration Effect for Solvent Extraction Process of Oily Contaminated Soil." Reaktor 19, no. 2 (August 11, 2019): 84–88. http://dx.doi.org/10.14710/reaktor.19.2.84-88.
Full textNingsih, Erlinda, Lily Pudjiastuti, Dessy Wulansari, Nurul Anggraheny, Ali Altway, and Kuswandi Kusno Budhikarjono. "Simulasi absorpsi multikomponen gas dalam larutan K2CO3 dengan promoter MDEA pada packed column." Jurnal Teknik Kimia Indonesia 11, no. 1 (October 2, 2018): 17. http://dx.doi.org/10.5614/jtki.2012.11.1.3.
Full textDissertations / Theses on the topic "Reaktiv effekt"
Näslund, Robert. "Driftoptimering av reaktiv effekt." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-162405.
Full textGustafsson, Daniel. "Studie av reaktivt effekt." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-42582.
Full textStorgärd, Per. "Reaktiv effektkompensering : Kartläggning och utvärdering av olika lösningar för att kompensera reaktivt effekt i vindkraftparker." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105229.
Full textAs we in Sweden expends our use of wind power and the wind farms grows bigger, the risk of reduced power quality on the electric grid is bigger now than ever. Wind turbines produce a variety of distortions on to the electric grid that threatens to reduce the power quality of the Swedish power grid. One of these distortions is so-called reactive power, reactive power can be described as the foam in a beer glass, the foam is also beer but occupies unnecessary space that could be just for beer. The beer in this case is the active effect and the foam is the unnecessary reactive effect which lowers utilization rate. This is an issue to taken into account in the development of Swedish wind power projects. In this work, the concept of reactive power as well as its emergence and impact on the network will be treated. Furthermore, methods for reactive power compensation investigated and used to develop models for reactive power compensation of wind farms. The aim of the project was to evaluate different methods for reactive power compensation , as well as explore how these are affected by the wind farms size, topography and location of the regional network . This together with An investigation of the solutions currently available on the market has been the basis for developing a strategy for the compensation of the reactive power in the OX2 's wind farms. The results show that one can compensate for the produced reactive effect in a number of ways, some better than others. The choice of the compensation method depends primarily on the grid codes in the region. In the wind power context, the compensation to be able to compensate for voltage drops that occur in fast wind changes. The quickest method is ABB's SVC Light® capable control in under 5 ms , but means a greater investment cost 20 million sek. Can we settle the FACTS solution of type SVC , the cost is halved to about 10 million sek. For parks in size with Maevaara II, the Siemens solution with direct drive turbines or ABB's SVC solution the most suitable in terms of investment costs and park size. Both ABB and Siemens recommend that further investigation is to be done to optimize a solution to the specific case. The investment cost presented in this report is a rough estimation, the different alternatives lies between 10-20 million sek. This is to be used as a guide value to evaluate the different methods.
Welbourn, Mark. "Reaktiv effekt i Dala Energis framtida mellanspänningsnät." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160670.
Full textHudji, Muadh. "Analys av elnät för begränsning av reaktiv effekt." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-396215.
Full textYstad Energy is responsible for the power grid in Ystad municipality. With increasing demand for electricity, society has become more vulnerable. Therefore, authorities and electricity suppliers always work to ensure safe and secure electricity supply. Variations in energy demand and climate change put the electrical system in a difficult situation regarding electricity supply safety. Ystad Energy has noted that the power grid has high values of reactive power over a part of year, which may affect the losses and system operating conditions in both local and regional networks. Therefore, this work focuses on performing reactive power analysis in the power cables located between the high voltage substations and the low voltage substations, i.e. in the 10.7 kV level of the distribution network. All overhead lines in Ystad municipality are already buried in the ground to reduce line faults in the system due to weather and other influences. The data collection from Ystad Energy shows that the reactive power input increases most during the summer. Underground cables are considered an important cause that contributes to reactive power input in an electrical system. Data collection also shows significant variations in energy consumption between the winter and summer months, where energy consumption is much lower in the summer due to the climate and human habits. Therefore, this leads to a voltage increase in the mains that can further lead to a capacitive reactive power generation. In the project, an analysis of the power grid has been performed, considering the current grid topology. Simulations of different scenarios with production plants, such as wind power, which can affect the power flow in the network, are also carried out. It was proved that the reactive power in the grid is produced by the underground cables. The report also presents some possible solutions that may be appropriate to reduce the reactive power in the network.
Dietrichson, Harald Hole. "Optimal forvaltning av reaktiv effekt i regionalnettet i Buskerud." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12867.
Full textSolhed, Maria. "Analys och kompensering av reaktiv effekt i Umeå Energis elnät." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-134404.
Full textThis project has its background in the fact that Umeå Energy has observed a higher amount of capacitive reactive power that is directed upwards in the power grid. It is a common tendency that the character of a power grid is becoming more capacitive, due to certain changes that are made in the grid. Important contributory causes are an increase of the amount of cable and an increase of the voltage level. An analysis is made of the flow of reactive power in the local power grid. A main conclusion is that the reactive power consumption on substation level in many cases is decreasing in the summer season, and in some cases the net contribution is capacitive. During the critical time of year there is an contribution of capacitive reactive power to the superior grid of up to 30 MVAr, with a lack of compensation equipment in the local grid. Calculations on planned cables in the grid on 45 kV and 145 kV level indicate on a future contribution of reactive power of about 17 MVAr. Allready existing components in the local grid that can contribute to compensation of the excess of reactive power are mentioned, but the conclusion is that new equipment for compensation needs to be installed to be able to decrease the contribution to the superior grid. Suitable choices of equipment are either reactors with fixed amounts of MVAr, which can be combined to different levels of compensation, or alternatively one reactor which has a variable amount of MVAr, a so called VSR (Variable Shunt Reactor). The requirements concerning reactive power in two of the new grid codes on EU level are examined. Theese can possibly affect the power grid of Umeå Energy.
Eldrup, Martin. "OPTIMAL PRODUKSJON AV REAKTIV EFFEKT I REGIONALNETTET I TELEMARK & VESTFOLD." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10529.
Full textSkagerak Energi AS eier og drifter mesteparten av regionalnettet og kraftverkene i Telemark og Vestfold. Med denne oppgaven ønsker de å bedre samdriften av kraftverkene og regionalnettet i området. Arbeidet skulle resultere i en oversikt over optimal produksjon av reaktiv effekt i kraftverkene i tillegg til en oversikt over spenningsprofilen i nettet. Optimaliseringsverktøyet som ble brukt i denne oppgaven var MATPower som inneholder forskjellige algoritmer for løsning av generelle lastflyter og optimale lastflyter. Året ble delt i to perioder, hvor tunglastperioden utgjør tidsrommet fra og med desember til og med februar, mens resten av året ble modellert med sommerbelastning. Optimaliseringen tar utgangspunkt i en minimalisering av taps- og produksjonskostnader, men i tunglastperioden ble det i tillegg inkludert kostnader forbundet med uttak av reaktiv effekt fra sentralnettet. Sammenligningsgrunnlaget er en optimalisering uten uttak av reaktiv effekt fra kraftverkene, noe som er i nærheten av dagens drift. De andre optimaliseringene ble sammenlignet med denne og viste at en optimalisering av reaktivt uttak fra kraftverkene ga en stor kostnadsbesparelse. Kostnaden ved uttak av reaktiv effekt fra sentralnettet er den som reduseres mest ved optimalisering av reaktivt effektuttak ved kraftverkene. Kostnadene ble redusert ved optimaliseringer både med og uten kostnaden for uttak av reaktiv effekt fra sentralnettet. Taps- og produksjonskostnadene ble også redusert i forhold til sammenligningsgrunnlaget. Sammenligningsgrunnlaget ga de høyeste kostnadene uansett belastning og produksjonsnivå.
Sjödin, Joakim. "Faskompenseringsutredning vid ett pappers och massabruk." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105177.
Full textAbstract This report contains an investigation on, how and in what way, it´s possible to reduce the reactive effect (VAR) consumption at Metsä Board Mill in Husum. The VAR consumption is not a problem during normal operation, but if one of the mill´s three turbines for some reason falls out of operation the VAR consumption may exceed the agreement with the mill´s electricity distributor. If the agreed VAR consumption is exceeded, the mill has to pay a fee for each kVAr that exceeds the agreed consumption level. This is something that the mill wants to avoid because the turbines aren’t always operational due to the need of maintenance work. The largest VAR consumption is located at the paper mill, which is why the compensation measures are focused in this area. After studying the mill´s single-line diagram of the electrical distribution and different measuring equipment located in the mill, it becomes clear that the VAR compensation equipment is best fitted at the mill´s coating machine. The coating machine is the only production line in the paper mill that is missing VAR compensation equipment, that’s why the compensation measures are needed here. After calculations it’s clear that the needed VAR compensation capacity is 15 MVAr and should be placed in connection to the coating machine. This capacity is enough to compensate for a loss of the VAR generated from the turbine G1, which is assumed to produce 15 MVAr guaranteed. That compensation is enough to avoid exceeding the VAR consumption agreement with the electricity distributor. But to avoid problems with harmonics, 16 MVAr compensation equipment is recommended instead because it´s more suited for the job. Metsä has plans to put their pulp mill in insulated operation that separates the mill´s grid from the distribution grid. This becomes possible whit the recommended VAR compensation equipment to avoid over consumption of VAR from the electricity distributor.
Casal, Alexander. "Om Elbolags Hantering av Reaktiv Effekt och Elavbrott med avseende på Hushållskunder." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-10407.
Full textBooks on the topic "Reaktiv effekt"
Múčka, Viliam. Vliv ionizujícího záření na katalyzátory heterogenních katalytických reakcí. Praha: Academia, nakl. Československé akademie věd, 1986.
Find full textMarwan, Wolfgang. Die photophobische Reaktion von Halobacterium halobium: Untersuchungen zur Physiologie und Biochemie einer archaebakteriellen Signaltransduktionskette. Gauting bei München: A.S. und Ch. C. Intemann, 1989.
Find full textW, Baynes John, and Monnier Vincent M, eds. The Maillard reaction in aging, diabetes, and nutrition: Proceedings of an NIH Conference on the Maillard Reaction in Aging, Diabetes, and Nutrition, held in Bethesda, Maryland, September 22-23, 1988. New York: A.R. Liss, 1989.
Find full textMarwan, Wolfgang. Die photophobische Reaktion von Halobacterium halobium: Untersuchungen zur Physiologie und Biochemie einer archaebakteriellen Signaltransduktionskette ... Biologie, Biochemie, Chemie). A.S. und Ch. C. Intemann, 1988.
Find full textThe Maillard reaction in aging, diabetes, and nutrition: Proceedings of an NIH Conference on the Maillard Reaction in Aging, Diabetes, and Nutrition, held ... in clinical and biological research). A.R. Liss, 1989.
Find full textBook chapters on the topic "Reaktiv effekt"
Hollfelder, K., F. Götz, and K. H. Schleifer. "Tetrachlordekaoxid (TCDO) — Antimikrobielle Aktivitäten und Effekte auf Biomoleküle." In Reaktive Sauerstoffspezies in der Medizin, 253–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71583-9_23.
Full textKoscielny, A., D. Engel, J. Maurer, A. Hirner, C. Kurts, and J. C. Kalff. "Der gastroinestinale field effect – eine chirurgisch getriggerte immunologische Reaktion?" In Chirurgisches Forum und DGAV Forum 2010, 219–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12192-0_83.
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