Izdelava računalniškega programa za prikaz kazalčnega diagrama sinhronskega stroja v realnem času

ŽUGELJ, ANDRAŽ (author), Čorović, Selma (mentor)

V magistrskem delu je predstavljen razvoj, opis in uporaba računalniškega programa, ki iz podatkov zajetih iz merilnega inštrumenta MI7140 omogoča izris kazalčnega diagrama sinhronskega stroja v realnem času. Obenem omogoča tudi izris diagrama z ročno vnesenimi podatki, brez merilnega sistema, kar dovoljuje tudi simulacijo obratovalnih stanj, ki jih v praksi ne moremo doseči, ali pa so nezaželena. Predmet obravnave sta sinhronski stroj s cilindričnim rotorjem in sinhronski stroj z izraženimi poli. Na začetku je predstavljeno teoretično ozadje kazalčnega diagrama in postopek njegove konstrukcije za obe vrsti stroja. V nadaljevanju je opisan merilni sistem s sinhronskim strojem, na katerem so bile izvedene meritve. S tem smo preverili delovanje programa pri komunikaciji z merilnim instrumentom, ter pravilen izris kazalčnega diagrama dejanskega sinhronskega stroja, na podlagi zajetih meritev. Sledi podroben opis razvitega programa. Opisan je grafični vmesnik, ki omogoča izbiro med načinom meritve in simulacije, vnos nazivnih podatkov, določanje pogojev pri načinu simulacije, nastavljanje parametrov serijske komunikacije ter spreminjanje vrednosti različnih veličin, s čimer lahko simuliramo različna obratovalna stanja stroja. Predstavljeni in opisani so: funkcijski blok, ki skrbi za zajem in obdelavo podatkov iz merilnega instrumenta, funkcijski blok v katerem so opisani postopki izračunov za potrebe simulacije, ter funkcijski blok za izris kazalčnega diagrama. Cilj naloge je bila izdelava programa, ki v realnem času izrisuje kazalčni diagram dejanskega sinhronskega stroja, hkrati pa omogoča tudi simulacijo različnih obratovalnih stanj. Rezultati so prikazani v obliki slik, ki jih program izriše med simulacijo.

• Language: Slovenian
• Keywords: sinhronski stroj, kazalčni diagram, simulacija, meritev v realnem času
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2021
• PID: 20.500.12556/RUL-127037
• Publication date in RUL: 14.05.2021

Secondary language

• Language: English
• Title: Software for real-time visualisation of synchronous machine phasor diagram

Abstract

This Master's thesis presents the development, documentation and testing of a computer program which uses data captured from a measuring instrument (Iskra MI7140) to generate phasor diagrams of a synchronous machine in real time. The program also supports the generation of diagrams using data that has been entered manually, rather than measured, which enables the simulation of unrealistic and undesirable conditions, both on synchronous machines with cylindrical and salient pole rotors. The paper begins with an overview of the theory behind phasor diagrams and their contructions for both types of machine. After that, the measuring system for a synchronous machine, on which measurements were performed, is described. With those measurements, we were able to monitor the program's operation and its communication with the measuring instrument. Furthermore, evaluation of the generated phasor diagram for the actual synchronous machine was performed, based on the captured measurements. The next part of the document consists of a detailed description of the program that was developed. First, some of the main features of the graphical interface are explained, such as choosing between measurement and simulation mode, entering nominal data, determining conditions in simulation mode, setting serial communication parameters, and changing values of different quantities, which can be used to simulate different operating conditions of the machine. This section also introduces and describes a function block that handles the capture and processing of data from the measuring instrument, a function block that outlines the calculation procedures for simulation purposes, and a function block for drawing a phasor diagram. The purpose of this project was to develop a software tool that not only draws real-time phasor diagrams for real synchronous machines, but also enables the simulation of various operating states. Functionality test results are displayed in the form of screenshots taken at various stages of the simulations performed using the program.

• Keywords: synchronous machine, phasor diagram, simulated measurements, real-time electrical measurements