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Systems of protection and remote control of medium voltage substation with using protection with communication Profibus and IEC61850
Tesařík, Jan ; Fazekaš, Tibor (referee) ; Huzlík, Rostislav (advisor)
This Diploma thesis deals with the system for protection and remote control for MV switchgear by using protection relays with communication protocols PROFIBUS and IEC61850. The first part represents a theoretical introduction to points at issue. In the first part, the reader will get conceived with the communication standard IEC61850 and its typical architecture for MV switchgear, and also with data model based on this standard. Second part discusses the PROFIBUS communication protocol. In this part, the reader can acquire information about transmit technology and communication protocol for PROFIBUS. Last part of this theoretical chapter contains an overview on the MODBUS communication. The second part deals with the description of protection relays, which were used for the purposes of this thesis. In the first subchapter, the reader can learn about the REM620 from ABB Company, its configuration and cooperation with IEC61850 standard. Second subchapter describes the HMS Anybus communication converter. The reader will get further knowledge about description of this device and how to configure the communication protocols. In last subchapter, a description of protection relay SIPROTEC 7SJ64 produced by Siemens company is explained. With the third part starts the practical work within this thesis with protection relays. This chapter is divided into two parts; each describes different system with using the protection relays. First system contains ABB REM620 relay and HMS Anybus converter. By converting MODBUS protocol with the Anybus converter, the REM620 can be connected to PROFIBUS network. This part includes the configuration of REM620 and Anybus converter, the engineering of MODBUS and PROFIBUS protocols and testing various signals in those networks. The second system contains Siemens SIPROTEC 7SJ64 and ethernet switch. This subchapter deals with the preparation of configuration for SIPROTEC 7SJ64 and the engineering for IEC61850 communication. This part finishes with the comparing of both systems on the engineering bases. The last part of this thesis is about working with the LabVIEW instrument. Within this part, the software emulation of protection relay was made. The program offers to the user the possibility of setting input parameters as the effective values of current and voltage, the frequency and the current phase shift. Also the user can set the thresholds for protection functions, such as the Overcurrent, the Voltage and the Frequency protection. As last one, the Phase unbalance protection for the current phases is present.
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Proposal of Communication Mix in Selected Company
Matyšková, Dana ; Marko, Dávid (referee) ; Milichovský, František (advisor)
Topic of diploma thesis is communication mix of Arkon Flow Systems, s.r.o. company. It focuses on specific communication mix of a product and it compares theoretical basis with real conditions. Diploma thesis also contains communication mix improvement suggestions for the distributors, customers and end users. Benefit of this study would be production, sales and profit growth in the field of measuring and regulation instruments. Diploma thesis focuses on international markets in Latin America, especially in Peru.
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Identification of Value Determinants of the Mechanical Engineering Enterprises in the Czech Republic
Strnadová, Michala ; Hrvolová, Božena (referee) ; Koráb, Vojtěch (referee) ; Živělová, Iva (referee) ; Režňáková, Mária (advisor)
This doctoral thesis is focused on value based management. The basic principle of value based management states that the main object in an organization is value enhancement. Within an organization the concept of value based management connects activities and people participating in business processes to maintain that the resources the owners put into the business are evaluated. The essential task of value based management is to find and identify factors which contribute increasing performance and creating the value of a company, known as value drivers. The purpose of this thesis is to identify the factors which by significant amount affect the value of the mechanical engineering enterprises in the Czech Republic. In the first part of the thesis an analysis of current academic knowledge in area of value drivers is made. The base of the analysis is created by foreign resources because there is only limited amount of information in domestic literature. Besides the determination of value approach and its benefits attention is mainly paid to organizing results from value generators area. Findings of secondary resources analysis are used for own research problem. The second part of the thesis includes determination of the main objects and the research problem as well as formulation of the research questions and tested hypotheses. The third part is focused on describing methods which were used in the thesis. In the thesis was applied logical (induction – deduction, analysis – synthesis, generalization – concretaization) and empirical methods (comparsion method, quantitative research methods). Primary data was collected by using a questionnaire. Obtained data was analyzed using logarithmic decomposition of the return on equity, Boosted Trees and descriptive statistics (for example measures of location, measures of variability) and more statistical methods for analysis of statistical hypothesis (Kolmogorov-Smirnov test, Lilliefors test for normality, F-test, Student’s t-test, Chi-squared test, Fisher’s exact test, Spearman’s rank correlation coefficient). In the fourth part of the thesis the branch of manufacturing industry is characterized and the identification of performance factors is accomplished applying logarithmic decomposition of the return on equity. The other subjects of research were companies in a branch called “Manufacturing of machines and devices”. The fifth part of the thesis includes summary of findings of the prime research and its discussion. Primary data was obtained by a questionnaire survey and completed with accounting information of respondents. The findings of the research show that main determinants affecting the value of engineering companies in the Czech Republic are return on assets, profit margin, consumption, sales profitability, personnel costs and value added. The qualitative value drivers are good reputation, human resources (employees) and its characteristics, business and flexibility, performance and productivity, assets, competency responsible staff, attentiveness to requirement of customers, innovation and quality.
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Effectiveness of marketing activities in engineering in Czech Republic
Milichovský, František ; Kita, Jaroslav (referee) ; Kožená, Marcela (referee) ; Stávková, Jana (referee) ; Šimberová, Iveta (advisor)
The dissertation is focused on the current needs of the business effectiveness and efficiency in marketing activities. In an industrial environment is a prerequisite for the success of the strategic marketing objectives in relation to corporate strategy. In this work there is focus on individual performance systems and group of metrics that are currently applied in engineering in connection to the implemented marketing activities. The main aim of this dissertation is to propose a methodologyfor the selection of marketing metrics that are directly connected to the effectiveness of the company and its marketing activities in the field of engineering in the Czech Republic. To explore the knowledge area there was also used primary and secondary research. The primary research was conducted by structured interviews through case studies and knowledge-based questionnaire investigation, supported by evidence acquired Czech and foreign literary sources. The work includes detailed assessment of the empirical research, including the testing of hypotheses as basis on which is established the methodology for selecting marketing metrics in engineering in the Czech Republic. The benefits could be seen both in theoretical and practical as well as educational fields.
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Point-on-Wave Controller PWC600 and its capability to protect the HV substation
Šikula, Jiří ; Melnyk, Oleksiy (referee) ; Polsterová, Helena (advisor)
Mechanical and electrical stresses reduce the life of all devices. The lifetime of some devices is affected by these stress factors more, others less. For high voltage products, it's not just a lifetime or a price, but a security that should be the first. This thesis deals with protection of elements of high voltage switchboards. Specifically, it is a PWC600 Point-on-Wave Controller that attempts to minimize stress when connecting or disconnecting loads or generators.
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Management of the Construction Project
Šrotová, Zuzana ; Zouhar, Petr (referee) ; Waldhans, Miloš (advisor)
This thesis describes the basic procedures of the management of a construction project. For a better understanding of the processes here explains the concepts that are contained in this work. The goal is to become familiar with the specific procedures and methods of project management during the implementation of construction projects.
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Vývoj běloruského strojírenského průmyslu
Kuzmianets, Marharyta
The purpose of the thesis is to identify factors that affect the efficiency of the Belarusian engineering industry. To achieve this goal, an analysis of various factors affecting the efficiency of the engineering industry in the Republic of Belarus is carried out. The current thesis includes literary research, a methodological part and empirical part. In the course of the literary research, the factors influencing the performance of manufacturing companies in the engineering sector are considered, and information is provided on the engineering industry and its structure in the Republic of Belarus. In the methodological part, the selected factors are divided into industry characteristics and influencing factors that affect the performance of the Belarusian engineering industry. In the empirical part, an analysis of the selected factors is carried out and the possible influence of these factors on the mechanical engineering of the Republic of Belarus is demonstrated. The factors under analysis are as follows: GDP, gross value added, the number of people employed, labour productivity, real pay, foreign trade turnover, and valuation changes. The thesis ends with the conclusions and recommendations, as well as proposals for improving the competitiveness of the enterprises in this sector. In particular, it is proposed to improve economic policy, create conditions for the development of innovative technologies and attract foreign investors. For the successful implementation of these measures, it is essential to provide economic and political stability in the country.
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Strategic Management of Age Structure of Workers in Mechanical Engineering
Kristenová, Barbora ; Kocianová, Renata (advisor) ; Kopecký, Martin (referee)
The Bachelor's thesis focuses on age management of employees in mechanical engineering, which is nowadays a problematic area from the point of view of human resources. The thesis introduces topics related to age (age management, diversity management), but also the topics of succession and talent management. The thesis observes the specifics of mechanical engineering from the point of view of the general industry, and then more specifically, considering the status of graduates and seniors employed in the industry. The thesis contains a quantitative research of age structure management in the selected organizations which were the talks with the representatives of HR bodies and workers resulted in the identification of procedures that guide the decisions about age structure in small and medium-sized mechanical engineering oriented companies in the Benešov region. Powered by TCPDF (www.tcpdf.org)
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