Enefit Energiatootmine AS õlitehase elektrienergia tarbimise optimeerimise võimalused
Laen...
Kuupäev
2020
Kättesaadav alates
05.09.2020
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Vigade kordumise vältimiseks tulevikus ning ENEFIT 280 elektrivõrgu optimeerimiseks
viidi läbi võrgu analüüs. ENEFIT 280 elektribilansi ja koormuskõverate analüüsi
tulemusel selgus, et sektsioonidel ja trafodel on väga madal koormustegur. Pärast seda
püstitati ENEFIT 280 elektrivõrgu sügavama analüüsi eesmärk, mille käigus selgus, et
võrgus on harmoonilised moonutused, kuid võrk ise on tasakaalus. Kõrgemate
harmooniliste tingimustes kehtivad trafode valimisel eritingimused. Töö eesmärk on
optimeerida ettevõtte võrku reaktiivvõimsuse vähendamise ja kõrgemate harmooniliste
taseme vähendamise kaudu. Andmed aktiiv- ja reaktiivvõimsuse, harmooniliste kohta on
saadud automatiseerimissüsteemist UNIFORMANCE. Täpsem analüüs viidi läbi
võrguanalüsaatoritega FLUKE 434, FLUKE 435. Töös uuriti harmooniliste toime efekti
trafodele, analüüsiti kas neid saab täiendavalt koormata. Uuriti kadude ja reaktiivvõimsuse
vähendamiseks trafode töötamist ühe trafo režiimis. Uuriti LC-filtrite kasutamist
reaktiivvõimsuse kompenseerimiseks ja harmooniliste komponentide vähendamiseks.
The analyses of the grid was performed with following aims: to avoid mistakes in future and to optimize telectical grid of Enefit 280 oil winning plant (the plant). As a result of the analysis of electrical balance and load curves of the plant, it became clear that the transformer load factor was quite low. Afterwards the goal for more detailed analyses of electrical grid was set. As a result, the following was figured out: the grid had harmonic distortion, however, it has beeen balanced. For high harminic conditions the special conditions for the selection of transformers shall be followed. The aim of the thesis is to optimize the grid of the plant by reducing of reacting power and lowering of harmonic distortion in the grid. The data for active and reactive power was received from Uniformance automation system (the system of process history database). More detailed analysis was performed by grid analysers Fluke 434 and Fluke 435. The following were considered in the thesis: Various aspects of influence of harmonic distortion on the transformers and possibility of additional loading. Functioning of transformers in „one transformer“ mode of operation. Application of L-C filters for reactive-power compensation and reduction of harmonics Keywords: load curve,
The analyses of the grid was performed with following aims: to avoid mistakes in future and to optimize telectical grid of Enefit 280 oil winning plant (the plant). As a result of the analysis of electrical balance and load curves of the plant, it became clear that the transformer load factor was quite low. Afterwards the goal for more detailed analyses of electrical grid was set. As a result, the following was figured out: the grid had harmonic distortion, however, it has beeen balanced. For high harminic conditions the special conditions for the selection of transformers shall be followed. The aim of the thesis is to optimize the grid of the plant by reducing of reacting power and lowering of harmonic distortion in the grid. The data for active and reactive power was received from Uniformance automation system (the system of process history database). More detailed analysis was performed by grid analysers Fluke 434 and Fluke 435. The following were considered in the thesis: Various aspects of influence of harmonic distortion on the transformers and possibility of additional loading. Functioning of transformers in „one transformer“ mode of operation. Application of L-C filters for reactive-power compensation and reduction of harmonics Keywords: load curve,
Kirjeldus
Magistritöö
Energiakasutuse õppekaval
Märksõnad
magistritööd, koormuse graafikud, võimsus