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Testing of Distance Protection
Řehoř, Jiří ; Topolánek, David (referee) ; Orságová, Jaroslava (advisor)
The testing of distance protection in bachelor´s task is made a distinction between protection, requirements and relegation. This testing is also consisted in principle of function, describing terms of distance protection and comparing with time-current characteristics. The next step after short estimation was describing digital distance protection SIPROTEC 7SA511. The advantages are included in this estimation. The next part contains some configurations and connections with a test equipment in order to take control of measuring through the computer. The extended configurations are also comprised of two programms – DIGSY and TZO3. We had to make a suggestion of suitable methodics for measuring a time-current characteristic. We carried out three measurements where the test equipment was set to role of type TREND. A magnitude is generated at the output that is changed linearly in time with required rate (speed). We changed a current IX1 for our measurements that was undertaken with a rate of current rise. This process was given by a test equipment when the set values were constant. In the second measurement we modified a size of shift phase in the test equipment. In the third measurement we tried to set up different sizes of particular impedance characteristics (zone) inside of the distance protection where was set a neutral breaking time for the measured zone. On the contrary, the previous measurements had an absolute time.We have introduced evaluated results of measuring and observations in the end of this bachelor’s thesis.
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Testing of Distance Protection
Holub, Martin ; Vaculík, Petr (referee) ; Orságová, Jaroslava (advisor)
Bachelor thesis Testing of Distance Protection introduces us to the issue of distance protection and its detailed principle. It deals with its individual elements and shows us different types of impedance characteristics of measuring elements. It describes a situation that occurs during a short circuit on a homogeneous line, then introduces us to a DC component compensation and discuss the effect of distance protection degrees. Among other things, it deals with the digital distance protections and settings of their characteristics. Finally the theoretical part evaluates advantages over other protections and advantages and disadvantages of distance protections themselves. Thesis will introduce the digital distance protection REL 511 from the company ABB and characterizes its settings, parameters and connection to the testing equipment OMICRON CMC 256plus, which is used to control the protection via personal computer. Description of the programs OMICRON Test Universe and CAP 540 and their settings follows. This section can serve as a manual for future operators of REL 511 protection. The work provides a suitable methodology for measuring the operating characteristics and uses this method in practice. Given the limited version of the OMICRON Test Universe, polygonal tripping characteristics are measured in the module "Distance" with the shot test. Evaluation of measurements is summarized at the end.
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Calculation of HV line distance relay setings
Pustowka, Pavel ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
This work is divided into practical and theoretical part. The first part deals with defective states on ehv lines, especially short-circuits and their calculation, further discusses about distance protections and the theory necessary for their correct adjustment. The second part contains practical calculation of short-circuit conditions and adjustment for distance protection on selected part of 110 kV network, belonging to EO.N company. The result of the work are values needed for adjustment all distance protection in entered part of the network.
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Utilization of SINCAL tool in the field of network protection
Rampák, Dominik ; Wasserbauer, Vojtěch (referee) ; Topolánek, David (advisor)
This bachelor thesis is describing the basics of using program PSS SINCAL for protection of distribution networks. The thesis is divided into 3 parts. The first part is describing basics and functions of the program. The second part is devoted to the moduls, work with moduls described in form of manuals. The last part is describing creation of test network and simulation of single-phase to ground short-circuit to verify selectivity of the protection devices.
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Testing of distance protection
Makuta, Peter ; Novotný, Jan (referee) ; Wasserbauer, Vojtěch (advisor)
This work deals with basic fault conditions in the power system. It deals with electric protections and their requirements for service in the second section. Distance protection SIPROTEC 4 7SA610, its technical parameters and main functions are introduced in this work. Testing unit OMICRON 256plus is described in the topic dealing with testing. Manuals for adjusting the distance protection SIPROTEC 4 7SA610 and OMICRON 256plus is also included in this work. Testing of distance protection SIPROTEC 4 7SA610, analysis and evaluation of the measured values are stated in the summary.
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Calculation of distance protection relay setting for 110kV line.
Bartoš, Petr ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
This work deals with both the calculation of short circuit conditions of 110 kV network in the Czech Republic. This network is divided into two parts, each of which feeds a 400/110 kV substation and the calculation is performed for different locations of a short circuit. The second part deals with the calculation of distance protection settings for one part of this network. The result of this work are the values of network parameters needed to set up distance protection, which protects our individual lines of the network.
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The calculation of 110 kV network distance protection relays setings.
Bartoš, Petr ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
This master’s thesis is about setting of distance protections. The first part is focused on a brief analysis of the basic types of failures and distance protections tripping characteristics and their co-operation with automatic re-turn. The most extensive theoretical chapter is devoted to specific influences that negatively affect the proper operation of distance protections. The practical part is about calculation of symmetrical short-circuit and dissymmetrical short-circuit conditions with consideration of fault resistance and the actual calculation settings of distance protections. Calculations of short-circuit conditions and setting of distance protections are made on a specific part of the network of E.ON in area Prostejov, which is supplied from the substation 400/110 kV Otrokovice.
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The calculation of the distance protection relay setings for HV line
Doležal, Marek ; Vaculík, Petr (referee) ; Toman, Petr (advisor)
I divided this work into two parts: theoretical and practical. The first part deals with theoretical calculation of setting for distance protection of high voltage line, possible defective states, which can appear on this network, and methods of calculating these defective states. The second part deals with application of the earlier described theory to calculation of distance protection for specified part of the network. The results of this work are all the parameters needed for setting of distance protection for one part of the network.
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Calculation of voltages and currents in the point of protection during faults
Tomášek, Lukáš ; Topolánek, David (referee) ; Haluzík, Evžen (advisor)
This work consists of two major parts - theoretical and practical. The theoretical part describes the course of short-circuit current in time, its components, characteristic values, and various types of short-circuits that may occur in electrification network. The theoretical part also describes the method of symmetrical components, its principles, fundamental relations and its use for handling the short-circuit current in electrification network, especially the asymmetrical short-circuits. The last theoretical section following the method of symmetrical components shows a summary of formulas used to calculate substitute short-circuit impedances in various elements of electrification network. The practical part then tries to answer how to handle short-circuit currents in a given network using the method of symmetrical components. Calculation is made for each type of short-circuit that may occur in the network, and voltage and current ratios are given for the point of short-circuit as well as for the point of a distance protection; main evaluated parameter of calculation is a short-circuit impedance measured by the distance protection. The conclusion of the practical part specifies why a compensation of distance protection is needed in ground short-circuits.
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Utilization of SINCAL tool in the field of network protection
Rampák, Dominik ; Wasserbauer, Vojtěch (referee) ; Topolánek, David (advisor)
This bachelor thesis is describing the basics of using program PSS SINCAL for protection of distribution networks. The thesis is divided into 3 parts. The first part is describing basics and functions of the program. The second part is devoted to the moduls, work with moduls described in form of manuals. The last part is describing creation of test network and simulation of single-phase to ground short-circuit to verify selectivity of the protection devices.
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