diplomsko delo
Povzetek
V diplomskem delu sem presodil smiselnost investicije v napravo za
kompenzacijo jalove moči v kotlarni. Postroj sestoji iz treh kotlov in petih naprav za
soproizvodnjo toplote in elektrike (SPTE), kjer so kot gorivo uporabljajo lesni sekanci.
Proizvedena toplota se uporablja za ogrevanje bližnjega Zavoda za prestajanje kazni
Dob. SPTE enote obratujejo skozi vse leto, kotli pa zgolj v kurilni sezoni. Profil porabe
električne energije je tako sezonski in v pasu. Kogeneracije proizvajajo skupaj 225 kW
delovne moči, kar je dovolj za potrebe kotlarne, ker pa imamo veliko porabnikov s
potrebo po jalovi moči, moramo le to prejemati iz omrežja. V diplomski nalogi sem
predstavil rešitve za ta strošek.
Začel sem s teoretičnim delom. Opisal sem jalovo moč, način priključitve in
vrste kompenzacijskih naprav, ter nastanek in vplive višje harmonskih komponent. V
nadaljevanju sem na podlagi podatkov iz omrežnega števca izračunal prekomerno
prevzeto jalovo energijo in s tem povezan letni strošek. Za izbiro ustrezne
kompenzacijske naprave smo na objektu izvedli meritve. Zanimale so nas napetostne
in tokovne razmere, delež delovne in jalove moči ter prisotnost višje harmonskih
komponent. Kot alternativno možnost nižanja stroška za prevzeto jalovo energijo sem
preučil še možnosti proizvodnje jalove moči s sinhronskim generatorjem in z
razsmernikom.
Ključne besede
jalova moč;harmonske komponente;faktor moči;kompenzacija;kogeneracija;razsmerniki;visokošolski strokovni študij;Aplikativna elektrotehnika;diplomske naloge;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2022 |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UL FE - Fakulteta za elektrotehniko |
Založnik: |
[Ž. Juršič] |
UDK: |
621.31(043.2) |
COBISS: |
121510659
|
Št. ogledov: |
19 |
Št. prenosov: |
10 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Compensation of reactive power of a district heating plant |
Sekundarni povzetek: |
In my thesis, I evaluated the rationale behind the investment in a device for
compensating reactive power in the boiler room. The system consists of three boilers
and five elements for the cogeneration of heat and electricity (CHP), with wood chips
used as fuel. The produced energy is used to heat the nearby Dob Penitentiary. CHP
units operate throughout the year, but boilers only during the heating season. The
electricity consumption profile is both seasonal and base load. Cogenerations produce
a total of 225 kW of active power, which is enough for the needs of the boiler room,
but since we have many consumers with a need for reactive power, we have to receive
that from the grid. In my thesis, I presented solutions for this cost.
I started with theory. I described the reactive power, the method of connection
and the types of compensation equipment, as well as the formation and effects of
higher harmonic components. Based on the data from the network meter, I calculated
the excessive absorbed reactive energy and the related annual cost. In order to select
suitable compensation equipment, we carried out measurements at the facility. We
were interested in the voltage and current conditions, the proportion of active and
reactive power and the presence of higher harmonic components. As an alternative
possibility of reducing the cost of absorbed reactive energy, I also studied the
possibilities of producing reactive power with a synchronous generator and an inverter. |
Sekundarne ključne besede: |
reactive power;harmonic components;power factor;compensation;cogeneration;inverter; |
Vrsta dela (COBISS): |
Diplomsko delo/naloga |
Študijski program: |
1000315 |
Konec prepovedi (OpenAIRE): |
1970-01-01 |
Komentar na gradivo: |
Univ. v Ljubljani, Fak. za elektrotehniko |
Strani: |
X, 46 str. |
ID: |
16479232 |