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Usage of LabView in the field of switchgears.
Karpeta, Petr ; Huzlík, Rostislav (referee) ; Valenta, Jiří (advisor)
My aim in Bachelor`s project is familiarization the problems of development environment and LabVIEW measurement card DAQCard-6036E. The implementation of this program in industry, the map application in the field of measuring performance, data collection and automation of electric appliances. Another important point is the basic description of the controls palette of instruments and creating a new program for virtual instrumentation and simulation. Because using a virtual programming language from National Instrument on measured dynamic characteristics of the electrical arc, closer to students and other readers the theory arcs of alternating electric current. Describe the emergence, speeches and behavior of electric arc in atmospheric pressure and normal temperature laboratory room. Provide basic knowledge of the influences acting on burning electric arc and how these effects distort the ideal dynamic characteristics. A proposal for measuring the dynamic characteristics of electric arc in the LabVIEW environment. To measure several volt-ampere characteristics with card DAQCard- 6036E and also been measured in these courses in the current and voltage measurement circuits. Measurement is performed on the product with two carbon electrodes in the vertical arrangement. The result will be a measured dynamic voltampere characteristics with measured data in the form of tables and graphs.
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Electric arc in the switchgear
Kutal, Ondřej ; Dohnal, Petr (referee) ; Bušov, Bohuslav (advisor)
This thesis focuses on description of creation, properties and behavior of an electric arc in the switchgear. In addition, it focuses on description how an electric arc can be created and how it effects contacts in electrical switchgear. Electric arcs is divided into arc with DC or AC. Quenching of the electric arc supplied by DC is more difficult than in case of AC since the DC does not pass through zero value. For the design of quenching chamber it is important to know the characteristics of the electric arc under both conditions. The behavior of static V-A characteristic of the electric arc supplied by DC was determined with experimental measurements using the equation by Ayrton. Subsequently, measurement of the dynamic characteristics of the electric arc with AC were determined. And the limits values for the emergence of electric arc were measured of. Last, the results wereevaluated and expansion of measurement task was proposed. The numerous influences on the arc were described. In conclusion the thesis extends diagnostic of the arc under the laboratory conditions.
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Electric arc in the switchgear
Kutal, Ondřej ; Dohnal, Petr (referee) ; Bušov, Bohuslav (advisor)
This thesis focuses on description of creation, properties and behavior of an electric arc in the switchgear. In addition, it focuses on description how an electric arc can be created and how it effects contacts in electrical switchgear. Electric arcs is divided into arc with DC or AC. Quenching of the electric arc supplied by DC is more difficult than in case of AC since the DC does not pass through zero value. For the design of quenching chamber it is important to know the characteristics of the electric arc under both conditions. The behavior of static V-A characteristic of the electric arc supplied by DC was determined with experimental measurements using the equation by Ayrton. Subsequently, measurement of the dynamic characteristics of the electric arc with AC were determined. And the limits values for the emergence of electric arc were measured of. Last, the results wereevaluated and expansion of measurement task was proposed. The numerous influences on the arc were described. In conclusion the thesis extends diagnostic of the arc under the laboratory conditions.
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Usage of LabView in the field of switchgears.
Karpeta, Petr ; Huzlík, Rostislav (referee) ; Valenta, Jiří (advisor)
My aim in Bachelor`s project is familiarization the problems of development environment and LabVIEW measurement card DAQCard-6036E. The implementation of this program in industry, the map application in the field of measuring performance, data collection and automation of electric appliances. Another important point is the basic description of the controls palette of instruments and creating a new program for virtual instrumentation and simulation. Because using a virtual programming language from National Instrument on measured dynamic characteristics of the electrical arc, closer to students and other readers the theory arcs of alternating electric current. Describe the emergence, speeches and behavior of electric arc in atmospheric pressure and normal temperature laboratory room. Provide basic knowledge of the influences acting on burning electric arc and how these effects distort the ideal dynamic characteristics. A proposal for measuring the dynamic characteristics of electric arc in the LabVIEW environment. To measure several volt-ampere characteristics with card DAQCard- 6036E and also been measured in these courses in the current and voltage measurement circuits. Measurement is performed on the product with two carbon electrodes in the vertical arrangement. The result will be a measured dynamic voltampere characteristics with measured data in the form of tables and graphs.
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