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Title:OPTIMALNA RAZPOREDITEV VODNIKOV DALJNOVODA GLEDE NA EMISIJE ELEKTROMAGNETNIH POLJ IN HRUPA
Authors:Deželak, Klemen (Author)
Štumberger, Gorazd (Mentor) More about this mentor... New window
Files:.pdf DR_Dezelak_Klemen_2011.pdf (3,15 MB)
 
Language:Slovenian
Work type:Dissertation (m)
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V Sloveniji je pridobivanje novih koridorjev za daljnovode zelo oteženo, če že ne skoraj onemogočeno. Zaradi velikega odpora javnosti do gradnje novih daljnovodov je potrebno vložiti mnogo truda tako v prostorsko načrtovanje daljnovodov, kakor v vrednotenje obremenitve okolja povzročene s strani daljnovoda. Pri tem morejo biti, znotraj danega koridorja, vplivi daljnovoda na okolje v okviru zakonsko predpisanih mej. Pri tem so zelo pomembne predvsem vrednosti emisij električne poljske jakosti, emisij gostote magnetnega pretoka ter emisij hrupa. Slednje so odvisne od napetosti voda, toka v vodu in geometrijske razporeditve vodnikov. Z ustrezno razporeditvijo vodnikov je mogoče v znatni meri vplivati na vrednosti emisij elektromagnetnih polj in hrupa v bližini koridorja daljnovoda. Še več, z ustreznimi programskimi orodji je za določen koridor mogoče določiti optimalen razpored vodnikov glede na dano kriterijsko funkcijo. Za določitev optimalnega razporeda vodnikov je v disertaciji razvito ustrezno optimizacijsko okolje. To obsega modul za določitev gostote magnetnega pretoka in električne poljske jakosti v poljubni točki vzdolž trase daljnovoda, z ali brez upoštevanja povesne verižnice. Dodatno je vključen tudi modul za izračun emisij hrupa daljnovoda in ustrezno optimizacijsko orodje. Cilj disertacije je poiskati optimalno razporeditev vodnikov trifaznega daljnovoda glede na dopustne vrednosti emisij elektromagnetnih polj in hrupa vzdolž koridorja, oziroma glede na izbrano kriterijsko funkcijo na takšen način, da bo višina vpetja strelovodne vrvi in s tem tudi višina stebra čim nižja. Rezultat disertacije je opis algoritmov za določitev optimalne porazdelitve vodnikov trifaznega daljnovoda glede na dano kriterijsko funkcijo in dane omejitve. Razvita programska orodja je mogoče uporabiti tudi pri preverjanju, ali je visokonapetostne daljnovode nižjih napetostnih nivojev mogoče, znotraj obstoječe trase, nadgraditi tako, da bodo primerni za višji napetostni nivo. Razen tega je razvito programsko orodje mogoče uporabiti za snovanje novih daljnovodov ob upoštevanju omejitev, ki so za izbrani napetostni nivo običajno podane v obliki širine koridorja in dopustnih vrednosti emisij elektromagnetnih polj in hrupa ter varnostnih razdalj in oddaljenosti.
Keywords:daljnovod, optimizacija, elektromagnetno polje, hrup, korona, poves vodnika
Year of publishing:2011
Publisher:[K. Deželak]
Source:Maribor
UDC:621.3.013:519.62(043.3)
COBISS_ID:14919446 Link is opened in a new window
NUK URN:URN:SI:UM:DK:NUOB7WBR
Views:2705
Downloads:587
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FERI
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Secondary language

Language:English
Title:OPTIMAL ARRANGEMENT OF OVERHEAD POWER LINE CONDUCTORS CONSIDERING EMISSIONS OF ELECTROMAGNETIC FIELDS AND AUDIBLE NOISE
Abstract:The legal procedures to obtain the right of way for the new overhead power lines in Slovenia are extremely difficult nowadays. Due to the large public opposition against the building of the new overhead lines is necessary to invest a lot of effort in both, the planning of overhead power lines and the minimization of their impacts on the environment. In that sense, within the given overhead power line right of way, all of the impacts on the environment should be under prescribed limits. Therefore, most of our attentions should be devoted to minimize emissions of the electromagnetic fields and the audible noise. The aforementioned emissions depend mostly on the values of overhead power line voltage, current and geometrical arrangement of conductors. Especially with the proper arrangement of the overhead power line conductors the emissions of the electromagnetic fields and the audible noise could be essentially reduced. Moreover, with an appropriate software tool, the optimal arrangement of conductors, with respect to the given objective function, could be determined. Such an optimal arrangement of the conductors can be determined with the Differential Evolution based optimization environment proposed in this dissertation. It contains the module for calculating the audible noise emissions as well as the module for calculation the emissions of the electromagnetic fields. In the calculations it is possible to consider the sagged conductors or their approximation with the straight conductors. The aim of this dissertation is to find an optimal arrangement of the three-phase power line conductors. The acceptable emissions of the electromagnetic fields and audible noise are considered as the optimization bounds, while the optimization goal is the minimal height of the tower defined with the attachment of the overhead ground wire. The developed software tool can be used for designing the new overhead power lines, where the restrictions as the width of the overhead power line right of way, the safety clearances, the allowable emission of electromagnetic fields and audible noise are considered. Additionally, the proposed software tool can be applied to check where the overhead power line with the lower rated voltage level can be upgraded to the higher rated voltage level inside already existing right of way.
Keywords:overhead lines, optimization, electromagnetic fields, audible noise, corona, conductor sagging


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