Analiza primjene direktne komunikacije u sustavu numeričkih zaštitnih uređaja

scientific master's theses

• Title (english): Peer-to-peer Communication Analysis in Numerical Power System Protection
• Author: Filip Vidović
• Mentor: Ante Marušić (mentor)
• Committee member: Tomislav Tomiša (član povjerenstva)
• Committee member: Ante Marušić (član povjerenstva)
• Committee member: Petar Bodlović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Energy and Power Systems); Zagreb
• Defense date and country: 2002-07-09, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Power Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Razvojem LONTALK komunikacijskog protokola i NEURONCHIPA kao komunikacijskog procesora, Echelon je omogućio direktnu komunikaciju među mrežnim uređajima, bez potrebe instaliranja nadzornog uređaja/programa. Kako su originalni Echelon-ovi uređaji bitno jednostavnije građe i funkcije od numeričkih zaštitnih uređaja, u radu je predstavljen način i ispitane mogućnosti korištenja ovakvog pristupa unutar integriranih sustava zaštite i upravljanja, a u cilju postizanja veće funkcionalnosti zaštitnog sustava, točnosti i brzine djelovanja, te značajnog smanjenja potrebe za klasičnim ožičenjem između zaštitnih uređaja. Ispitivanja su rađena korištenjem ABB-ovih uređaja, terminala polja REF 543, zvjezdaste spojke RER111 i optoelektričkih pretvarača RER103, kao osnovnih dijelova sustava.
Poseban naglasak je na načinu konfiguriranja (programiranja) terminala polja, građenju virtualnih veza između izlaznih mrežnih varijabli jednog i ulaznih mrežnih varijabli drugog terminala i usporedbi vremena odziva, odnosno vremena koje je potrebno da se odvije željena sekvenca, između klasičnog fiksnog ožičenja i komunikacije.
Nakon uvoda, u drugom dijelu predstavljena je osnovna građa LONTALK komunikacijskog protokola, objašnjen je način adresiranja mrežnih uređaja i formiranja logičkih struktura od kojih se sastoji mreža, te navedeni načini pristupa mreži i ograničenja s obzirom na ukupan broj uređaja.
Ostali dijelovi sustava, način i programi za konfiguriranje i parametriranje terminala polja, način i program za građenje veza među uređajima, kao i uređaj za praćenje prometa podataka po mreži predstavljeni su u trećem dijelu.
U četvrtom dijelu napravljene su konfiguracije tipskih (karakterističnih) polja na primjeru trafostanice 35/10 kV, s ugrađenim programima zaštite, komunikacije, upravljanja, nadzora i mjerenja. Konfiguracije predstavljaju moguće rješenje za postrojenja ovakvog tipa. Također je napravljen i kompletan projekt veza među terminalima polja.
Peti dio se odnosi na karakteristike sustava s obzirom na vremena odziva. Napravljena su usporedna mjerenja vremena klasičnog ožičenja i komunikacije, na primjeru sekvence zaštite od zatajenja prekidača.
U zaključnim razmatranjima navedene su prednosti, problemi i preporuke za korištenje ovakvih sustava.

Abstract (english)

The development of the LONTALK communication protocol and the NEURONCHIP communication processor made it possible for Echelon to enable a peer-to-peer communication between the network devices, without the required installation of the master systems. Since the original Echelon devices are significantly simpler in their structure and function than the numerical protection relays, the study presents the mode and the tested usage possibilities of this kind of access within the integrated protection and control systems, with the scope of achieving a better functionality of the protection system, the accuracy and the speed of operation nonwithstanding the significant decrease in the need for the classic mode of the wiring between the protection devices. The tests were done by means of ABB devices, REF 543 feeder terminals, RER111 star coupler and RER103 bus connection modules; the above mentioned being the primary parts of the system.
A special emphasis was given to the configuration (programming) mode of the feeder terminals, building of the virtual connections between the output network variables of one and the input network variables of the other terminal, as well as to the comparison of the reaction time, i.e. the time necessary for the realization of the wanted sequence, between the classic fixed wiring and communication.
After the introduction, the second part of the study presents the basic structure of the LONTALK communication protocol, explains the mode of addressing network devices and forming of the logical structures comprising the network, and it specifies the modes of network access and the constraints regarding the total number of the devices.
The third part of the study talks about the other parts of the system, including the feeder terminal relay configuration and relay setting mode and tools, the device network management mode and tools, as well as the network analyzer.
The fourth part of the study deals with the configuration files of the characteristic bays of the 35/10 kV trasformer station with the protection, communication, control, supervision and measurement programs already installed. The configurations represent a possible solution for the stations of this type. A complete project of the connections between the feeder terminals was also created.
The fifth part relates to the system characteristics taking into consideration the reaction time. Comparison measurements of the classic wiring time and communication were made, the example being a circuit breaker failure protection sequence.
The final considerations of the study specify the advantages, the problems and the recommendations for the usage of such devices.

• Keywords: Terminal polja; LON mreža; interoperabilnost; mrežna varijabla; zvjezdasta spojka; direktna komunikacija; mrežni čvor; NEURON procesor; konfiguracijski projekt; mrežni analizator
• Keywords (english): Feeder terminal; LON network; interoperability; network variable; star coupler; peer-to-peer communication; network node; NEURON chip; configuration file; network analyzer
• Language: croatian
• URN:NBN: urn:nbn:hr:168:767081
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-04-26 13:32:49