ALTERNATIF PENANGANAN LOSSES AKIBAT KETIDAKSEIMBANGAN BEBAN PADA TRAFO DISTRIBUSI

2021 ◽  
Vol 9 (1) ◽  
pp. 83-90
Author(s):  
Anang Dasa Novfowan ◽  
Mochammad Mieftah ◽  
Wijaya Kusuma
Keyword(s):  
Load Balancing ◽  
Energy Losses ◽  
One Stage ◽  
Distribution Transformers ◽  
Long Time ◽  
Unbalanced Load ◽  
Changing Patterns ◽  
Phase Data ◽  
The Impact ◽  
A Current

The unbalanced load on distribution transformers is mostly caused of connecting new customers and changing patterns of electricity usage in the community. The impact of the unbalanced load is the emergence of a current flowing on the transformer neutral conductor that causes energy losses. Load balancing of distribution transformers is commonly done by technicians, but the implementation takes quite a long time and is repeated, sometimes up to 4-5 times to get the appropriate results. This is more due to less valid customer phase data. Customer phase verification is needed to accelerate the load balancing process in an effort to reduce losses in distribution transformers. With valid customer phase data, just one stage of load balancing can reduce losses by 1.06%.

scholarly journals Plant-derived stimulants and psychoactive substances – social and economic aspects

2020 ◽  
Vol 5 (10) ◽  
Keyword(s):  
Social Factors ◽  
Technological Development ◽  
Criminal Activity ◽  
Drug Market ◽  
Public Institutions ◽  
Drug Markets ◽  
Long Time ◽  
Changing Patterns ◽  
Criminal Groups ◽  
The Impact

An analysis of the drug market was carried out, in the context of changing patterns of drug use, cultural and social factors as well as economic and links with wider crime. The drug markets remain one of the most profitable areas of economic activity of organized criminal groups. The impact of the drug market on society is enormous and goes beyond the immediate effects of their use. It involves participation in other types of criminal activity and terrorism, impact on legally operating companies and the economy, the burden on public institutions and corruption, as well as the impact on the whole society and its health. Globalization and technological development has accelerated the pace of changes taking place on the drug market. Geographically, this type of activity focuses on several existing for a long time, but also on new markets. Changes in this area pose a challenge for entities undertaking actions in response to problems related to the functioning of the drug markets, including those indirectly resulting from them. A detailed analysis of the conditions for growing the most common types of stimulants has also been made and the key information on this subject is presented in the following work.

scholarly journals Analisis Pengaruh Beban Tak Seimbang Terhadap Arus Netral Pada Trafo IV GI Sukamerindu Bengkulu

2019 ◽  
Vol 9 (2) ◽  
pp. 7-13
Author(s):  
Hendro Tanamal ◽  
Afriyastuti Herawati ◽  
Novalio Daratha ◽  
Ika Novia Anggraini
Keyword(s):  
Load Balancing ◽  
Neutral Current ◽  
Current Loss ◽  
Distribution Transformers ◽  
Unbalanced Load

ABSTRAKTransformer IV is one of the 20 kV distribution transformers found at the Sukamerindu Bengkulu Substation (GI). The transformer has a power rating of 30 MVA. In distribution transformers, inter-phase load balancing is needed. If the load is not balanced between the phases, current will flow in neutral wire. In this study the effect of unbalanced load on neutral current in transformer IV Sukamerindu Bengkulu is analyzed. The load is analyzed every hour of the day by observing the amount of current and voltage in each phase. From the results of the analysis it was found that the highest neutral current loss value was 1306.25 watts or 1.30 kW and the lowest was 0.724 kW, with an average neutral current loss that occurred in the IV unit transformer Sukamerindu at 639 watts.

scholarly journals Decarbonization of Distribution Transformers Based on Current Reduction: Economic and Environmental Impacts

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7207
Author(s):  
Vicente León-Martínez ◽  
Clara Andrada-Monrós ◽  
Laura Molina-Cañamero ◽  
Jorge Cano-Martínez ◽  
Elisa Peñalvo-López
Keyword(s):  
Carbon Dioxide ◽  
Load Balancing ◽  
Carbon Dioxide Emissions ◽  
Energy Losses ◽  
Economic Costs ◽  
Reactive Compensation ◽  
Distribution Transformers ◽  
Practice Efficiency ◽  
Current Reduction ◽  
Harmonic Filtering

Well-known industrial practice efficiency improvement techniques, such as reactive compensation, load balancing, and harmonic filtering, are used in this paper to reduce energy losses in distribution transformers, and therefore, to decrease carbon dioxide emissions and economic costs in the operation of these transformers. Load balancing is carried out by monitoring the values of the angles of the active and reactive components of the vector unbalanced power. Likewise, the application of Order 3/2020 of the Spanish National Markets and Competition Commission is described, in detail, for the calculation of the economic costs derived from the transformer energy losses caused by the load currents and the penalties due to transformer energy deliveries with capacitive power factors. Finally, all these improvement techniques are applied to determine savings in carbon dioxide emissions and costs on the electricity bill of an actual 1000 kVA distribution transformer that supplies a commercial and night-entertainment area. The results of this application case reveal that cost reductions due to energy loss savings are modest, but the reduction in carbon dioxide emissions and the savings in penalties for capacitive reactive supplies are significant.

Euratom and Brexit: Could the United Kingdom Maintain One Foot in the European Union? Current Scenarios and Future Prospects of British withdrawal from the EAEC

2018 ◽  
Vol 18 (2) ◽  
pp. 134-151
Author(s):  
Andrea Circolo ◽  
Ondrej Hamuľák
Keyword(s):  
European Union ◽  
United Kingdom ◽  
Independent Solution ◽  
Legal Regulation ◽  
The European Union ◽  
The United Kingdom ◽  
The Status ◽  
Long Time ◽  
Energy Community ◽  
The Impact

Abstract The paper focuses on the very topical issue of conclusion of the membership of the State, namely the United Kingdom, in European integration structures. The ques­tion of termination of membership in European Communities and European Union has not been tackled for a long time in the sources of European law. With the adop­tion of the Treaty of Lisbon (2009), the institute of 'unilateral' withdrawal was intro­duced. It´s worth to say that exit clause was intended as symbolic in its nature, in fact underlining the status of Member States as sovereign entities. That is why this institute is very general and the legal regulation of the exercise of withdrawal contains many gaps. One of them is a question of absolute or relative nature of exiting from integration structures. Today’s “exit clause” (Art. 50 of Treaty on European Union) regulates only the termination of membership in the European Union and is silent on the impact of such a step on membership in the European Atomic Energy Community. The presented paper offers an analysis of different variations of the interpretation and solution of the problem. It´s based on the independent solution thesis and therefore rejects an automa­tism approach. The paper and topic is important and original especially because in the multitude of scholarly writings devoted to Brexit questions, vast majority of them deals with institutional questions, the interpretation of Art. 50 of Treaty on European Union; the constitutional matters at national UK level; future relation between EU and UK and political bargaining behind such as all that. The question of impact on withdrawal on Euratom membership is somehow underrepresented. Present paper attempts to fill this gap and accelerate the scholarly debate on this matter globally, because all consequences of Brexit already have and will definitely give rise to more world-wide effects.

Magnetic resonance imaging in study of lungs

2019 ◽  
pp. 10-23
Author(s):  
T. A. Akhadov ◽  
S. Yu. Guryakov ◽  
M. V. Ublinsky
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Medical Society ◽  
Resonance Imaging ◽  
Iodinated Contrast ◽  
Long Time ◽  
Women And Children ◽  
Magnetic Resonance Imaging Mri ◽  
A Current ◽  
Lung Mri

For a long time, there was a need to apply magnetic resonance imaging (MRI) technique for lung visualization in clinical practice. The development of this method is stimulated by necessity of the emergence of an alternative to computed tomography, especially when radiation and injection of iodine-containing contrast agents are contraindicated or undesirable, for example, in pregnant women and children, people with intolerance to iodinated contrast. One of the reasons why lung MRI is still rarely used is lack of elaborated standardized protocols that would be adapted to clinical needs of medical society. This publication is a current literature review on the use of MRI in lung studies.

„Arvīd, uz kurieni Tu aizgāji?”: Arvīda Griguļa personības loma Rakstnieku savienības vēsturē

2020 ◽  
pp. 74-84
Author(s):  
Madara Eversone
Keyword(s):  
20Th Century ◽  
Communist Party ◽  
Central Committee ◽  
State Archive ◽  
National Archives ◽  
Literary Heritage ◽  
Literary Process ◽  
Long Time ◽  
The Impact

The article aims to highlight the role of Arvīds Grigulis’ (1906–1989) personality in the Latvian Soviet literary process in the context of the Latvian Soviet Writers’ Union, attempting to discover the contradictions and significance of Arvīds Grigulis’ personality. Arvīds Grigulis was a long-time member of the Writers’ Union, a member of the Soviet nomenklatura, and an authority of the soviet literary process. His evaluations of pre-soviet literary heritage and writings of his contemporaries were often harsh and ruthless, and also influenced the development of the further literary process. The article is based on the documents of the Central Committee of the Latvian Communist Party, the Latvian Soviet Writers’ Union and the Communist Party local organization of the Latvian Soviet Writers’ Union that are available at the Latvian State Archive of the National Archives of Latvia, as well as memories of Grigulis’ contemporaries. It is concluded that the personality of the writer Arvīds Grigulis, although unfolding less in the context of the Writers’ Union, is essential for the exploration of the soviet literary process and events behind the scenes. The article mainly describes events and episodes taking place until 1965, when Arvīds Grigulis’ influence in the Writers’ Union was more remarkable. Individual and further studies should analyse changes and the impact of his decisions in the cultural process of the 70s and 80s of the 20th century.

scholarly journals Sexuality and Affection in the Time of Technological Innovation: Artificial Partners in the Japanese Context

Religions ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 296
Author(s):  
Beatriz Yumi Aoki ◽  
Takeshi Kimura
Keyword(s):  
18Th Century ◽  
Human Life ◽  
Human Sexuality ◽  
Sexual Intimacy ◽  
Ancient History ◽  
Human Relationships ◽  
Living Things ◽  
Long Time ◽  
History Of ◽  
The Impact

Recent years have witnessed an increase in the number of academic studies on the impact of technological advancements on human life, including possible transformations and changes in human sexuality following the development of sex-related devices, such as sex robots. In this context, terms such as posthuman sexuality, digisexuality, and techno-sexuality have emerged, signaling possible new understandings of sexual, intimacy, and emotional practices. It is important to note that ancient history shows that humankind has for a long time been fascinated with their relationship to non-living things, mostly human-like figures, such as dolls. The Ningyo (人形, the Japanese term for doll) has a long history of usage, and has deep religious and animistic significance in the Japanese context—there are records of sexual use as early as the 18th century. With this context in mind, this paper focuses on three Japanese examples, aiming to shine a light on beyond-human relationships, which include a Japanese man’s marriage to a digital character, sex dolls, and communicative robots, from both a sexual and emotional perspective. In a new horizon of sexual and romantic possibilities, how will humans respond, and what can emerge from these interactions?

scholarly journals Stock Market Trading Rules Discovery Based on Biclustering Method

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Yun Xue ◽  
Zhiwen Liu ◽  
Jie Luo ◽  
Zhihao Ma ◽  
Meizhen Zhang ◽  
...  
Keyword(s):  
Stock Price ◽  
Historical Data ◽  
Probability Model ◽  
Trading Rules ◽  
Normal Probability ◽  
Long Time ◽  
Local Patterns ◽  
Short Term Prediction ◽  
Stock Market Trading ◽  
The Impact

The prediction of stock market’s trend has become a challenging task for a long time, which is affected by a variety of deterministic and stochastic factors. In this paper, a biclustering algorithm is introduced to find the local patterns in the quantized historical data. The local patterns obtained are regarded as the trading rules. Then the trading rules are applied in the short term prediction of the stock price, combined with the minimum-error-rate classification of the Bayes decision theory under the assumption of multivariate normal probability model. In addition, this paper also makes use of the idea of the stream mining to weaken the impact of historical data on the model and update the trading rules dynamically. The experiment is implemented on real datasets and the results prove the effectiveness of the proposed algorithm.

scholarly journals CRISPR-Cas9: A Powerful Tool to Efficiently Engineer Saccharomyces cerevisiae

Life ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 13
Author(s):  
João Rainha ◽  
Joana L. Rodrigues ◽  
Lígia R. Rodrigues
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Yeast Genome ◽  
Specific Method ◽  
Complex Processes ◽  
Biological Studies ◽  
Precise Tool ◽  
Long Time ◽  
Gene Knockouts ◽  
Heterologous Pathway ◽  
A Current

Saccharomyces cerevisiae has been for a long time a common model for fundamental biological studies and a popular biotechnological engineering platform to produce chemicals, fuels, and pharmaceuticals due to its peculiar characteristics. Both lines of research require an effective editing of the native genetic elements or the inclusion of heterologous pathways into the yeast genome. Although S. cerevisiae is a well-known host with several molecular biology tools available, a more precise tool is still needed. The clustered, regularly interspaced, short palindromic repeats–associated Cas9 (CRISPR-Cas9) system is a current, widespread genome editing tool. The implementation of a reprogrammable, precise, and specific method, such as CRISPR-Cas9, to edit the S. cerevisiae genome has revolutionized laboratory practices. Herein, we describe and discuss some applications of the CRISPR-Cas9 system in S. cerevisiae from simple gene knockouts to more complex processes such as artificial heterologous pathway integration, transcriptional regulation, or tolerance engineering.

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