Kalev SPA elektrivarustuse lahendamine kolme sisendi baasil

Lõputöö raames osaleti Contactus AS poolt tehtava Kalev SPA elektripaigaldise põhiprojektis. Kalev SPA elektrivarustus tuli viia vastavusse uue olukorra nõudlusele. Töö esimeses osas anti ülevaade tänapäevasest elektrivarustusest tervisekeskustes, mille alla kuulus üldnõuded ja standardid ning elektrivarustus Laulasmaa spaa- ja konverentsihotelli näitel, kus oli elektrivarustus lahendatud kahe sisendi ja ristlülituse baasil. Töö teises osas anti ülevaade Kalev SPA hotelli ja veekeskuse minevikust, olevikust ja tulevikust ning analüüsiti olemasolevat lahendust, mille tulemusel leiti, et algselt oli elektrivarustus lahendatud kahe Elektrilevi OÜ toitefiidri baasil, kuid kuhu hiljem lisandus ühe toitefiidriga hoonesisene alajaam ning kus Elektrilevi OÜ 1. toitefiider välja lülitati ning toitefiidri kaabel lahti ühendati, muutes süsteemi selliselt, et põhitarbimine hakkas toimuma läbi hoonesisese alajaama toitefiidri ning reservtarbimine jäi Elektrilevi OÜ 2. toitefiidri peale. Töö kolmandas, kõige olulisemas osas leiti elektrivarustuse lahendus kolme sisendi baasil, mille saavutamiseks koostati elektrotehnilised arvutused lühisvoolude, pingelangude ja selektiivsuse kohta ning koostati võrdlusanalüüs projekteeritava ja olemasoleva lahenduse vahel. Lisaks analüüsiti erinevate energiapakkujate pakkumisi, kuna uue lahendusega oli tekkinud võimalus valida erinevate pakkujate vahel, mille tulemusel leiti, et Pakkuja 1 pakkumine oli pea 4000 eurot odavam, kui Pakkuja 2 oma. Töö tulemusel leiti kõige optimaalsem lahendus, mis tagab uue olukorra nõudluse ning hilisema lisamisvõimaluse, efektiivsema rikkekindluse erinevate tarbimisrežiimide näol ning võimaluse valida erinevate energiapakkujate vahel, et tagada soodsaim hind. Projekteeritava lahenduse puhul on tegu lahendusega, mida on võimalik tulevikus rakendada ka teiste samasuguste elektrivarustusega hoonete juures, mis loob võimaluse valida erinevate toitefiidrite ja energiapakkujate vahel.

The topic of the thesis The Solving of Kalev SPA Electrical Supply Based on Three Low Voltage Inputs came from Contactus AS electrical project for Kalev SPA. Kalev SPA electrical supply had to correspond to the new situation. The first part gave an overview of modern electrical supplies in spas, which included main standards and regulations and electrical supply in Laulasmaa SPA, where it was based on two low votalge inputs and multiway switching. The second part gave an overview of the past, present and future of Kalev SPA and analysed the current electrical supply solution, where it was found that originally the electrical supply was based on two Elektrilevi OÜ inputs, but where an input from the internal substation was added later, which meant that one of the inputs from Elektrilevi OÜ was turned off and the cable was disconnected. This changed the situation so, that the main consumption was from the internal substation’s input and reserve conspumption from the Elektrilevi OÜ second input. The third, and the most important part found the solution to electrical supply based on three inputs. To achieve that, electrotechnical calculations about short circuit current, voltage drop and selectivity were made and a comparison analysis between the current and designed solution was conducted. Also, an economical analysis between different energy provider’s offers was carried out, because the designed solution opened up a chance to choose between different providers. With the analysis, it was found that the 1st provider’s offer was almost 4000 euros cheaper than the 2nd provider’s offer. As a result of this thesis, the most optimal solution was found, which corresponds to the new situation and gives a chance to expand the system later. Also, it ensures a better resistance to breakdowns. Finally, it creates an opportunity to choose between different energy providers, to guarantee a cheaper solution. The designed solution can also be used in other buildings, where a similar power supply system is being used.