The Development of A Universal Transformer Housing of the Unit Transformer Substation 6-10 / 0.4 KV

The company group of the PJSC “ROSSETI” pays great attention to reducing occupational hazard at the facilities of the power grid complex. The analysis of the accidents in the branch of PJSC “IGDC of the Center”– “Orelenergo” revealed that transformer housings installed at the mast-type transformer substations 6-10 / 0.4 kV can’t fully provide the required safety level as they can be slightly raised even without using a special tool, and therefore one can stick his hands or some objects to the current-carrying parts of the transformer substation. According to the statistics of the damages at the mast-type transformer substations 6-10 / 0.4 kV various small animals and birds can enter the electrical installation through small slits between the housing and the transformer, which will lead to different emergency situations. To prevent the aforementioned negative consequences, a universal transformer housing was developed for a mast-type unit transformer substation (UTS) 6-10 / 0.4 kV. The offered design of the housing is universal, since it can be used for the transformers of various capacities; for its manufacture tools and materials with different characteristics can be used. At the same time, the installation of the developed housing will allow power grid companies to reduce occupational hazard, reduce the undersupply of electricity and increase the reliability of power supply to the agricultural consumers. The technical solution presented in the article can be applied for the mast-type UTS 6-10 / 0.4 kV in the post-Soviet countries.

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Minimization of Negative Impact of Well Cementing on Productive Horizons by Utilization of Swellable Packers

10.2118/208510-ms ◽

2021 ◽

Author(s):

Mykhaylo Paduchak ◽

Viktor Dudzych ◽

Anatolii Boiko

Keyword(s):

Negative Impact ◽

Differential Pressure ◽

High Rate ◽

Donets Basin ◽

Technical Solution ◽

Negative Consequences ◽

Well Completion ◽

Stable Production ◽

Geological Conditions ◽

Gas Tight

Abstract Avoiding of negative impact of slurry contact with productive sections by utilization of swellable pakers well completion systems as a key solution for depleted reservoirs. Results are compared to previously used classic well completion method with production casing cementing The new method of the well completion is based on a long period and many wells operations within Svyrydivske field in Dnipro-Donets Basin (here and after DDB). Precise selection of hybrid, oil and water based elastomers and correct placement in the appropriate hole zones for water and sectional isolation together with oil based mud utilization during drilling have provided stable production in depleted reservoirs and have minimized negative consequences from water filtration. The results achieved and the well completion method are described in detail to allow readers to replicate all results in a comparable geological conditions in DDB. Current well completion method has a couple of outstanding results achieved: –well integrity barrier is based on sufficient differential pressure provided by swellable packers;–reliable long term water isolation of all detected water contained intervals;–the production sections are not polluted by slurry filtrated water;–increased production rate comparing to cemented wells;–no risks of slurry loss during well cementing. This technology has been successfully implemented in both vertical and deviated wells on 4.5″ (114.3 mm) casing OD, in the interval 5100-5450 meters, bottom hole temperature 120-135°C. The differential pressure provided by swellable packer is up to 10,000 PSI (68.9 MPa). Fluid reactive packers are ready to expand and isolate highly cavernous hole sections and keep differential pressure sustainably. To achieve the best results with this well completion method, it is also important to use reliable gas tight casing connections and know precise reservoir characteristics. That is why the technology is recommended to be customized for well known brownfield reservoirs with high rate of depletion. The main benefit of the well completion method is a proved and safe technical solution for mainly depleted deep gas and condensate deposits in DDB (Ukraine) with sensitive economics

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Bio-degradeable Bioplastics sebagai Plastik Ramah Lingkungan. SOIJST Vol. 1 (1):131-153

10.31219/osf.io/ae6hk ◽

2018 ◽

Author(s):

Kim Poppy Wijayanti

Keyword(s):

Polylactic Acid ◽

Human Activities ◽

Life Style ◽

Raw Materials ◽

Technological Development ◽

Public Awareness ◽

Negative Consequences ◽

Environmental Friendliness ◽

The Many ◽

Different Characteristics

Massive uses of conventional plastics have brought negative consequences to the aspects of sustainability and environmental friendliness of human activities, due to the problems concerning the availability of its raw materials and eventual wastes. One of the solutions to face these problems is by producing and using plastics that can degrade and be derived from renewable biomasses which are now known as bio-degradeable bioplastics. At least, there are 4 kinds of plastics that can fulfill the criteria as being bio-degradeable bioplastics, namely starch-based plastic, cellulose-based plastics, PLA (polylactic acid), and PHA (polyhydroxylalkanoates). These four kinds of plastics have different characteristics, applications, strengths, and also weaknesses. In spite of the many challenges in the uses of bio-degradeable bioplastics to replace conventional plastics, newest technological development and the birth of stronger public awareness towards a more sustainable and more environmentaly-friendly life style have given stronger stronger forces to increase the uses and urgency of bio-degradeable bioplastics.

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Mental Health Issues in the COVID-19 Pandemic and Responses in Bangladesh: View Point of Media Reporting

Frontiers in Public Health ◽

10.3389/fpubh.2021.704726 ◽

2021 ◽

Vol 9 ◽

Author(s):

Mir Nabila Ashraf ◽

Hannah Jennings ◽

Nantu Chakma ◽

Noshin Farzana ◽

Md. Saimul Islam ◽

...

Keyword(s):

Mental Health ◽

Financial Crisis ◽

Negative Impact ◽

News Coverage ◽

Health Issues ◽

Negative Consequences ◽

Framework Analysis ◽

Emergency Situations ◽

Mental Health Issues ◽

Resource Setting

Background: The negative impact of COVID-19 on mental health has been reported by media throughout the world, although this role is not well-understood in low-and middle-income countries (LMIC). We examined the reporting of mental health issues during the COVID-19 pandemic in Bangladesh and initiatives undertaken to support mental health reported from the viewpoint of media.Methods: We reviewed articles published in 10 local newspapers, including seven Bangla and three English newspapers, during the first year of the COVID-19 pandemic. News topics were identified through discussions among the team members, with searches across online newspapers and portals. Data extrapolated from newspapers were documented in an Excel spreadsheet. A mixed-method approach was used following a framework analysis for analyzing data. Recurring issues and commonly emerging topics were generated from the data. Descriptive statistics were applied for analyzing quantitative data.Results: Between March 2020 and March 2021, we have identified 201 reports on mental health issues including 45 reports (22.4%) focused on stress due to the associated financial crisis, unemployment and loneliness, 50 reports (24.9%) of 80 apparent suicides linked to family issues, disharmony in conjugal relationships, harassment, sexual violence, emotional breakdown, financial crisis, and stigma due to COVID-19.There were 77 reports (38.3%) concerning domestic violence during the pandemic. Twenty-nine reports (14.4%) referenced actions taken by different organizations to address mental health issues in response to the pandemic in Bangladesh.Conclusion: News coverage has the scope to highlight important issues that can emerge as a consequence of the COVID-pandemic, such as mental health, in a low resource setting. Capacity building of the media on the way to report mental health issues during emergency situations could be a useful strategy for more credible reporting on mental health issues during the COVID-19 pandemic for raising awareness of the public and policymakers about the negative consequences on mental health of the COVID-19 pandemic in Bangladesh. Adopting policies to support essential mental health care and promoting the local organizations to take timely public health measures will be imperative for averting the negative consequences of mental health due to the COVID-19 pandemic in Bangladesh.

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Design of power substation placement with GIS tracing tools

Vestnik IGEU ◽

10.17588/2072-2672.2019.4.075-083 ◽

2019 ◽

pp. 75-83 ◽

Cited By ~ 1

Author(s):

А.В. Gadalov ◽

S.V. Kosyakov

Keyword(s):

Low Voltage ◽

Power Grid ◽

Distribution Networks ◽

Power Lines ◽

Electrical Networks ◽

Voltage Distribution ◽

Transformer Substation ◽

Urban Distribution ◽

Gis Environment

Analytical methods that are currently used to determine transformer substation placement in the process of planning the development of low-voltage distribution networks are based on calculating the lengths of future power lines by Euclidean distance, or methods for comparing several alternative placement options taking into account the routes of power lines. Assumptions made in this case lead to the fact that for the selected location of the substation, the total cost of the power lines connected to it may exceed the possible minimum. The use of modern GIS technologies allows simulating the routes of laying power lines on the map bypassing the existing obstacles or finding the cheapest routes for crossing them. These opportunities can be used to improve the quality of designing urban distribution networks through minimizing the construction cost of new power lines. However, the methods of organizing the solution to such a design problem have not yet found practical applications. The aim of the work is to develop a practical method of designing the placement of power substations in the GIS environment and its verification using real data. The paper uses methods of spatial modeling in the GIS environment, including methods of overlay, finding optimal paths on graphs and power grid inventory, as well as discrete optimization methods. A method of computer-aided design of transformer substation placement in urban distribution low-voltage networks is proposed and implemented as a GIS software module, which allows finding the optimal options of the placement cost at the stages of network scheme selection. The paper presents the results of the method analysis based on studying the design of the power grid scheme of Ivanovo city quarters as an example. The results confirm the possibility of using GIS to improve the quality of decisions on the choice of placement of low voltage distribution substations when designing urban electrical networks and can be used in the electrical networks CAD.

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Enhancing safety and reliability of electric power supply to consumers through safe electricity networks of up to 1 kV

Energy Engineering and Control Systems ◽

10.23939/jeecs2021.02.097 ◽

2021 ◽

Vol 7 (2) ◽

pp. 97-102

Author(s):

Yurii Shelekh ◽

◽

Myroslav Sabat ◽

Vladyslav Lysiak ◽

Lidija Parashchuk ◽

...

Keyword(s):

Power Supply ◽

Electric Energy ◽

Electrical Network ◽

Electrical Safety ◽

Technical Solution ◽

Additional Advantage ◽

Electric Power Supply ◽

Safety And Reliability ◽

Emergency Mode ◽

Electrical Installation

The study presents an electric network that allows both increasing the level of electrical safety and eliminating one-phase damage to the electrical network without switching off the consumer's electric energy. The application of the network does not require significant investments. The technical feasibility of implementing an electrical installation with voltage values in the emergency mode on the leading parts, which does not exceed the permissible values for normal mode, is demonstrated. An additional advantage of the proposed technical solution is the immutability of the voltage at the customer's outputs, which allows it to operate normally also in the emergency mode of the electrical installation.

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A Study on Operation Optimization of Chain SVG in Stabilized Voltage of Rural Power Grid 220kV Transformer Substation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.713-715.1306 ◽

2015 ◽

Vol 713-715 ◽

pp. 1306-1308 ◽

Cited By ~ 1

Author(s):

Kun Ya Guo ◽

Peng Jin ◽

Shu Han Wang ◽

Jian Sun

Keyword(s):

Power Supply ◽

Reactive Power ◽

Comprehensive Evaluation ◽

Power Grid ◽

Liaoning Province ◽

Electrical System ◽

Operation Optimization ◽

Transformer Substation ◽

Set Up ◽

Operational Modes

In a rural power grid 220kV transformer substation in Liaoning Province, because of the appearance of a lot of new impact loads in the power supply area, the original reactive power repertory can not meet the existing load need. As a result, the output 66kV voltage fluctuation affects the power supply security of the users. After a comprehensive evaluation, it is planned to set up a set of ±100M SVG to increase the reactive power repertory to stabilize the system voltage. The electrical system of 220kV transformer substation is huge and often meets with sudden failure; and the capacity of this set of SVG is large, so it may worsen the situation in case of improper control. This paper discusses several operational modes that SVG should have and designs a scheme that can be flexibly switched in several operational modes, which is specifically executed by an overall coordination module. This method has passed the preliminary field operation verification.

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Complex Power System Status Monitoring and Evaluation Using Big Data Platform and Machine Learning Algorithms: A Review and a Case Study

Complexity ◽

10.1155/2018/8496187 ◽

2018 ◽

Vol 2018 ◽

pp. 1-21 ◽

Cited By ~ 7

Author(s):

Yuanjun Guo ◽

Zhile Yang ◽

Shengzhong Feng ◽

Jinxing Hu

Keyword(s):

Machine Learning ◽

Big Data ◽

Smart Grid ◽

Power System ◽

Data Management ◽

Power Grid ◽

Technical Solution ◽

Data Platform ◽

Complex Power ◽

Big Data Technology

Efficient and valuable strategies provided by large amount of available data are urgently needed for a sustainable electricity system that includes smart grid technologies and very complex power system situations. Big Data technologies including Big Data management and utilization based on increasingly collected data from every component of the power grid are crucial for the successful deployment and monitoring of the system. This paper reviews the key technologies of Big Data management and intelligent machine learning methods for complex power systems. Based on a comprehensive study of power system and Big Data, several challenges are summarized to unlock the potential of Big Data technology in the application of smart grid. This paper proposed a modified and optimized structure of the Big Data processing platform according to the power data sources and different structures. Numerous open-sourced Big Data analytical tools and software are integrated as modules of the analytic engine, and self-developed advanced algorithms are also designed. The proposed framework comprises a data interface, a Big Data management, analytic engine as well as the applications, and display module. To fully investigate the proposed structure, three major applications are introduced: development of power grid topology and parallel computing using CIM files, high-efficiency load-shedding calculation, and power system transmission line tripping analysis using 3D visualization. The real-system cases demonstrate the effectiveness and great potential of the Big Data platform; therefore, data resources can achieve their full potential value for strategies and decision-making for smart grid. The proposed platform can provide a technical solution to the multidisciplinary cooperation of Big Data technology and smart grid monitoring.

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Motivating volunteers in emergencies

VESTNIK INSTITUTA SOTZIOLOGII ◽

10.19181/vis.2021.12.4.752 ◽

2021 ◽

Vol 12 (4) ◽

pp. 87-107

Author(s):

Nataliya S. Voronina

Keyword(s):

Social Activity ◽

Negative Consequences ◽

Structured Interviews ◽

Rescue Work ◽

Emergency Situations ◽

Grounded Theory Method ◽

Self Development ◽

Long Time ◽

Sense Of Satisfaction ◽

Public Organisations

Volunteering is one of the most significant trends in social activity today. Numerous emergency situations (hereinafter referred to as ES), both natural and man-made, lead to human casualties, negative consequences for nature and infrastructure, and volunteers, despite the existing risks for their life and health, provide significant assistance in preventing these situations or combating their consequences. This activity, in turn, actualises the study of the reasons why people get involved in voluntary, unpaid work, and carry it on for a long time. The investigation of the motives of volunteers' participation in emergencies, presented in this article, is carried out using the “grounded theory” method by A. Strause and D. Corbin. The analysis is based on data from 45 semi-structured interviews with volunteers operating in ES (search for missing people, rescue work, first aid and humanitarian aid, etc.), and experts in the field, namely, heads of public organisations and professional rescuers. The study describes a set of stimuli that motivate people to volunteer in an emergency. As the analysis of interviews has shown, the fundamental category of participation in ES is helping other people, and it is explained through such motives as altruistic, personal, social, career and protective. At the same time, the identified motives almost completely intersect with the typology of motives identified in the study by I. Clery. The above study showed that most often volunteers in ES had personal motives (volunteering in ES as self-development), and most rarely career ones (becoming a professional rescuer through volunteering in ES). When the need arises, volunteers "help" physically, as far as their health allows, and as far as the state rescue services allow. Among the benefits of volunteering in ES, the respondents name “a sense of satisfaction”, thanks to it, volunteers want to continue their activities. The results of the study show that volunteering in an emergency is a process leading both to an increase in the effectiveness of prevention / elimination of the consequences of an ES, as well as to the development of the volunteers personality in various spheres: emotional, personal, and career.

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The problem of environmental consciousness in the context of health security during emergency response

Medico-Biological and Socio-Psychological Problems of Safety in Emergency Situations ◽

10.25016/2541-7487-2020-0-2-100-108 ◽

2020 ◽

pp. 100-108

Author(s):

A. N. Pronina ◽

T. P. Budyakova

Keyword(s):

Legal Aspects ◽

Household Waste ◽

First Year ◽

Negative Consequences ◽

Environmental Consciousness ◽

First Year Students ◽

Health Security ◽

Emergency Situations ◽

Environmental Actions ◽

Environmental Activities

Relevance. There is no element that reflects the safety of environmental actors in modern concepts of environmental consciousness. This circumstance negatively affects the practice of environmental actions, for example, during cleaning household waste or taking part as volunteers in mitigating aftermath of natural emergencies.Intention. To identify aspects of environmental actions that may pose a risk to the health of students due to lack of awareness.Methodology. In 2019, 60 first-year students of Yelets State Ivan Bunin University aged 17–18 were surveyed. Their awareness of the safety of environmental activities at school age was revealed.Results and Discussion. The survey showed that the problem of safety of environmental actors is especially relevant for schoolchildren. Due to insufficient knowledge in the field of hygiene or health effects of household waste and, in general, the danger of natural emergencies, they are unprotected both in environmental and legal aspects. At the same time, due to increased suggestibility, young people readily respond to environmental calls about protecting nature. Gaps in the environmental consciousness in terms of ensuring their own safety can lead to negative consequences for students in more complex environmental circumstances, for example, emergency situations requiring the involvement of population.Conclusion. The necessity of developing regulatory documents on the safe behavior of the population involved in some environmental activities is substantiated.

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RISK MANAGEMENT IN THE DEVELOPMENT OF TRANSPORT PROJECTS

Volume 8, Issue 2 - Entrepreneurship ◽

10.37708/ep.swu.v8i2.14 ◽

2020 ◽

Vol v8 (2) ◽

pp. 173-182

Author(s):

Svetla Tzvetkova

Keyword(s):

Risk Management ◽

Work Force ◽

External Factors ◽

Negative Consequences ◽

Highly Qualified ◽

Transport Activity ◽

Emergency Situations ◽

Multiple Risks ◽

Internal And External Factors ◽

Qualified Work

The realization of transport projects is accompanied by multiple risks which vary in nature. This is determined by the specificity of the transport activity and the multitude of internal and external factors which influence it. The occurrence of risks is caused by the inability to predict events which will take place in the future. This could lead to disasters, emergency situations and a lot of negative consequences for the transport firm such as reduced productivity, low competitiveness and insufficient highly qualified work force. Therefore, risk management in the development of transport projects needs to be aimed at the development and implementation of various methods which can reduce risks or prevent the probability for occurrence of unwanted events.

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