Optimizacija proizvodnje električne energije v spodnjesavskih hidroelektrarnah
magistrsko delo
Abstract
Magistrska naloga obravnava optimizacijo proizvodnje električne energije v verigi hidroelektrarn. Optimizacija temelji na modelu pretakanja vode v verigi hidroelektrarn. Model verige hidroelektrarn sestavljajo modeli elektrarn, ki upoštevajo obratovanje z največjim izkoristkom v skladu s školjčnimi diagrami. Model pretakanja vode v verigi temelji na poenostavljenem modelu pretakanja vode v kanalu, pri čemer je celoten kanal sestavljen iz več diskretnih odsekov, med katerimi se pretaka voda. Model upošteva pretakanje vode med posameznimi elektrarnami v verigi kot tudi akumulacije posameznih elektrarn. Sestavljen model verige elektrarn je uporabljen pri optimizaciji obratovanja verige. Slednja predstavlja omejen in nelinearen optimizacijski problem. Optimizacija je izvedena na osnovi kriterijske funkcije, ki opisuje dobiček pri časovno spremenljivi odkupni ceni prodane električne energije za dani dotok vode v akumulacijo prve hidroelektrarne. Pri izvedbi optimizacije se upoštevajo omejitve glede nivojev vode in pretokov v posameznih odsekih verige. Z optimizacijo se išče najboljša časovna razporeditev poteka in velikosti moči posameznih hidroelektrarn. Opisan postopek je izveden za del verige hidroelektrarn na reki Savi. Uporabljeno optimizacijsko orodje pa je diferenčna evolucija.
Keywords
električna energija;hidroelektrarne;modeliranje;proizvodnja;Sava;magistrske naloge;
Data
| Language: | Slovenian |
|---|---|
| Year of publishing: | 2014 |
| Typology: | 2.09 - Master's Thesis |
| Organization: | UM FE - Faculty of Energetics |
| Publisher: | [A. Koren] |
| UDC: | 621.311.21(043.3) |
| COBISS: |
1024165724
|
| Views: | 2319 |
| Downloads: | 152 |
| Average score: | 0 (0 votes) |
| Metadata: |
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Other data
| Secondary language: | English |
|---|---|
| Secondary title: | Optimization of electricity production in lower Sava power plants |
| Secondary abstract: | The master's thesis deals with the optimization of energy production in a chain of hydroelectric power plants. The optimization is based on the model of water flow in the entire chain. In the model, individual power plants are assumed to operate with maximum efficiency a maximum according to the hill-chart diagram. The water flow modelling is based on the open channel water flow mode. The open channels among power plants are represented by several discrete sections, where accumulations of individual power plants are considered as well. The model of a chain of hydroelectric power plants, obtained in described way, is applied in optimization of electricity production, which represents a limited and nonlinear optimization problem. In the optimization procedure, the objective function, that describes profit as a function of time dependent electricity price on the market and the water flows in individual power plants, is minimized. The maximal water flows and minimal and maximal water levels in individual sections of the hydroelectric power plant chain are considered as optimization bounds. The optimization algorithm searches for the optimal operational diagrams of individual hydroelectric power plants that provide the highest profit in the given time interval of observation. The described optimization procedure is applied for the chain of three hydroelectric power plants on the river Sava. Stochastic search algorithm called differential evolution is used as the optimization tool. |
| Secondary keywords: | modeling hydroelectric power plants;differential evolution;optimization; |
| URN: | URN:SI:UM: |
| Type (COBISS): | Master's thesis/paper |
| Thesis comment: | Univ. v Mariboru, Fakulteta za energetiko |
| Pages: | XV, 120 f. |
| ID: | 8729121 |
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