|
|
Dynamic Compensation of Reactive Power
Horenský, Martin ; Topolánek, David (referee) ; Drápela, Jiří (advisor)
This master’s thesis is focusing on compensation of reactive power, especially on creating demonstrative model of static var compensation unit (SVC). Main topic of thesis is to apply this device for fast balancing dynamic conversions of recieved reactive power. In theoretical part is described suitable method for determination of instantaneous power. Next, there is basic description of all means used for compensation of reactive power and detailed description of the SVC compensator. Practical part includes design of compensation unit and control program in LabVIEW. The pq theory is implemented for detection instantaneous power. The results of validating functionality of compensator are presented in the last part of thesis.
|
|
|
The reactive power compensation of the industrial consumer
Pospíšil, Zdeněk ; Holoubek, Jiří (referee) ; Toman, Petr (advisor)
This bachelor thesis deals with the reactive power compensation. The reactive power compensation falls into an important measures reducing current load of electrical grids and other equipments, which increase its lifespan and decrease energy losses. The bachelor thesis is divided into a theoretical and a practical part. In the theoretical part is explained the theory necessary for good understanding of compensation, explained the sanctions and the additional fees for unsatisfactory power factor and summarized the impacts of compensation on the electrical network. Further is shown the basic classification of compensation by its place of connection, type of compensation device and regulation. The end of theoretical part is dedicated to the simple calculation of compensation. The practical part deals with the real design of the reactive power compensation for a particular industrial consumer.
|
|
|
The reactive-power compensation of the industrial consumer
Mišinger, Ondřej ; Bok, Jaromír (referee) ; Toman, Petr (advisor)
The work deals with reactive-power compensation (power factor correction = PFC) at low and medium voltage. The theoretical part is focused on explaining the basic concepts of power factor correction and the reasons why the PFC is made. There is stated the basic allocation of PFC. Attention is devoted mainly for detuned PFC, which is nowadays often used because of the large number of nonlinear loads installed by customers. There are listed also the basic computational relations. Moreover, there are described the basic elements of compensation devices, which are capacitors, detuning reactors, contactors and power factor regulators. The practical part is dealt with power factor compensation for a particular industrial customers. There are offered several variants of the technical implementation of the PFC. These various options are compared from both technical and economic terms.
|
|
|
Reactive Power Compensation of The Industrial Consumer
Hanzelka, Jiří ; Holoubek, Jiří (referee) ; Toman, Petr (advisor)
This thesis is focused on reactive power compensation and it suggests new conceptions for industrial customers. The first part describes the basics of compensation, location and ways of compensation. In conclusion of this part it is a good example of parallel reactive power compensation. The second part deals with the design of reactive power compensation specifically for raw water pumping station. Compensation was solved both on a low voltage level and on the high voltage level. For drawings were used program EPLAN Electric P8.
|
|
|
Study of Power Plant Connection to Power Network
Sýkora, Martin ; Kurfűrst, Jiří (referee) ; Paar, Martin (advisor)
It is necessary to judge the influences of producers on the electric compounds while creating electrical energy or during the regulation of those existing. These analyses are sorted out by so called studies of connectivity. These calculations analyze the degree of connection of the producer and the standby unit during a break-down. The results of this report are several recommendations for creating such unit and succeeding steps leading to secure the stability and safety of the electric compound operation. The aim of this thesis is to discuss about software for PC solutions for static and dynamic network model, to draft power outlet into a network of generating high voltage, to complete a study of connectivity with respect to all the distortion factor, as increased voltage, inrush current at startup, flicker, harmonic currents, interference ripple, contribution to short-circuit current, reactive power control options, and demands for compensation.
|
|
|
Design of reactive power compensation in distribution network
Popek, Jiří ; Holoubek, Jiří (referee) ; Lázničková, Ilona (advisor)
This thesis is about reactive power compensation in industrial network. Task is design reactive power compensation devices, so that the power factor, which is main indicator of power quality, was within the limits required by the distributor. This is applied to wholesale customers of electrical energy. Reactive power consumed by appliances increased the current that flows through the network, transmission losses and voltage drop. Reactive power compensation is a measure reducing load current and ohmic losses in a supply line. Given that the compensation is one of the significant cost-saving measures in electric power distribution. Distributor requires electric power consumption with a lagging power factor in the range from 0,95 to 1. Other values of power factor are penalized.
|
|
|
Reconfiguration of an industrial distribution system including local power source integration
Benetka, Tomáš ; Holoubek, Jiří (referee) ; Drápela, Jiří (advisor)
This bachelor´s thesis deals with reconfiguration of industrial network that has been technologically reconstructed. The aim of this study is mostly to describe changes made on devices used for reactive power compensation and improving the power quality. Thesis is divided into two parts. Theoretical part of thesis deals with parameters used for judging power quality and causes of changes for these parameters, eventually with devices for its adjustment. Standard demands for these parameters are also included. Further, reactive power compensation, extract of reactive power appliance and their influence on power network is described in this thesis. In the second - practical - part devices used for reactive power compensation were reconstructed. This part is also focused on local energy source integration and usage of power electronic engineering products for power quality provision.
|
|
|
Reactive power compensation systems
Lakomý, Marek ; Paar, Martin (referee) ; Drápela, Jiří (advisor)
Bachelor‘s thesis deals with the compensation of reactive power, which enables improved power factor correction. The theoretical part includes an explanation of basic concepts of the theory of reactive power compensation, the basic allocation of compensating equipment, their description and basic computational relations. Simulation of compensation devices, making laboratory models and measuring their parameters were realized as the practical part of the thesis.
|
|
|
The reactive power compensation of the industrial consumer
Doseděl, Tomáš ; Martinák, Rostislav (referee) ; Toman, Petr (advisor)
This thesis is about reactive-power compensation used in real practise. In theoretical part, basic principles of reactive-power compensation are stated. Also, charges for breaching power factor and overview of individual compensation components are dealth with. Practical part is about the design of a low voltage compensator for industrial customer.Compensator uses central compensation with gradual switching.
|
|
|
Compensation of reactive power to avoid its overflow into the MV system
Jurák, Viktor ; Ptáček, Michal (referee) ; Orságová, Jaroslava (advisor)
This master thesis is focused on analysis of reactive power flow in LV and MV networks. In the first part there is a definition of reactive power and description of individual parts of electrical networks that contribute with their reactive power to distribution network. The second part is dedicated to calculation of power flow in simulation software PSS® Sincal where on numerical models of network different types of network configuration are tested and consequently its influence on reactive power flow is evaluated. A more detailed analysis is dedicated to reactive power compensation in networks with distributed generation equipped with Volt-Var regulation and its possible negative mutual influence. This thesis also includes general recommendation on the basis of network simulation analysis concerning installation of compensating systems in distribution transformer station.
|
guest ::
