SMART MINI-IDRO. User Guide. version 01

Transcription

1 SMART MINI-IDRO User Guide version 01

2 installation 1) in Microsoft Excel go to Instruments/macro/protection and set the value to MEDIUM or LOW (with high protection it does not function) 2) decompress the zip file containing the Smart Mini-Idro files in one folder 3) open the SMART Mini-Idro_En.xls file with Microsoft-Excel 4) Click Solo lettura - Enable macros in read mode only. 2

3 Software structure SMART Mini-Idro "is a toll for technical and economical evaluation of mini hydro power plants It is an instrument of knowledge and support in decisions The software can be used to assess the discharge availability, choice of technical parameters, evaluate energy production, benefits and financial aspects of mini hydro plants Support to the pre-feasibility project analysis To use the programme you must have Microsoft Excel installed in your PC 3

4 Working Modules Net discharge FDC Design discharge 1 DISCHARGE Total Head Hydraulic losses Net Hear 2 TURBINE Power Curve 3 ENERGY 5 FINANCIAL ANALYSIS Plant layout 4 COSTS 4

5 Module discharge 5

6 Module: Discharge Direct input of the FDC Direct INPUT of the Flow Duration Curve (FDC): 21 flow values on 21 times (from 0% to 100% with step 5%). NOTE: The Lombardia Region curve is valid only for the Northern Italy area. 6

7 Module: Discharge Minimum Instream Flow (MIF) SMART Mini-Idro allows the input of the minimum instream flow MIF (briefly defined as the minimum amount of water that must be ensured for the preservation of water bodies and aquatic biotic communities) through: DIRECT METHOD: direct input of the known value of the MIF PERCENTAGE METHOD: percentage of the average discharge calculated from the FDC (percentage of a Q mean) METHOD of the PO RIVER Basin Authority. Regarding the Italian Law n.7/2002 7

8 Module: Discharge Minimum Environmental Flow (MIF) MIF : DIRECT METHOD 8

9 Module: Discharge Minimum Environmental Flow (MIF) MIF : PERCENTAGE METHOD (% of the Q mean) 9

10 Module: Discharge Minimum Environmental Flow (MIF) MIF : METHOD of the PO RIVER Basin Authority (calculation according to the n. 7/02 Italian Law) 10

11 Module: Discharge Net Discharges For each duration, from 0% to 100%, the following discharges are calculated: Q gross: the total discharge, input in the FD MIF: regards the value input in the MIF module Q net: the net discharge, difference between the Q gross and the MIF 11

12 Module: Discharge Hydropower discharge Direct input the Design Discharge 12

13 Module: Dicharge Hydropower discharge Design Discharge, as a percentage of the Flow Duration Curve 13

14 Module: Discharge Utilization Curves Presentation of the runoff and plant utilization curves 14

15 Module: Turbine 15

16 Module: Turbine Net Head Calculation The net head is estimated from the gross head considering the continuous and concentrated head losses Continue head losses: assessed through the characteristics of the penstock and the design speed Concentrated losses: a fraction of the kinetic energy of the flow (α coefficient) 16

17 Module: Turbine Turbine selection Selection of different types of turbines: Pelton, Turgo, CrossFlow, Francis, Kaplan and others For each turbine it is proposed a typical turbine efficiency curve It is also possible to assign manually the turbine efficiency curve 17

18 Module: Energy 18

19 Module: Energy Characteristics of the plant In this module it is possible to evaluate the power plant and estimate the energy annual production. The Energy Module starts with the section "Characteristics of the plant," a brief summary of the data describing the plant: it is given the name, location, river, design discharge, gross head and type of turbine. 19

20 Module: Energy Power This module calculates the plant power The turbine efficiency, the local (concentrated) loss and the maximum loss are calculated in the Turbine Module P MAX [kw] = γ Q P 3 [m /s] H N η TUR (Q P ) 20

21 Module: Energy Annual Production This module determines the power plant energy annual production. E ANNUA [MWh] = ηtot ( 1 f ) P(t) dt P(t) = γ QDER (t) H N (QDER (t)) ηtur (QDER (t))

22 Module: Costs 22

23 Module: Costs Investment estimate The Costs Module has only one section name Investment estimate : it aims to estimate the cost required for the construction of the power plant in all its components. Two ways are proposed by the tool: Synthetic estimate Correlation formulas 23

24 Module: Costs Investment estimate Formulas Option in case the user does not have available the prices of the individual works, or does not know the characteristics of the installation, it is recommended to use the option formulas (with equations derived from practical cases) WARNING: PARAMETERS ARE PROPOSED AS DEFAULT BUT MUST BE VERIFIED WITH REAL CASES IN THE TERRITORY 24

25 Module: Financial Analysis 25

26 Module: Financial Analysis The Financial Analysis module is simulating the cash flows for the life of a plant (30 years), with respect to the expenditures and the energy production of plant, elaborating and comparing the annual costs and benefits You have to input the discount ( bringing up to date) rate, the management & maintenance costs and the taxes & fees costs 26

27 Module: Financial Analysis Annual benefit In Italy the selling price of the energy and the incentive instruments are governed by the market, making it impossible to offer sale prices with equal validity in the future The designer must assign the most appropriate energy price per year of calculation It is possible to consider also the incomes from Green Certificates for an assigned period 27

28 Module: Financial Analysis FINANCIAL ANALYSIS The latest Financial Analysis section displays the cash flow and calculates the most representative economic indicators 28

29 References: Lombardia Region, Quaderni Regionali di Ricerca n.33, Disponibilità ed ottimizzazione nell uso della risorsa idrica: Parametri per lo sfruttamento idroelettrico (1999). RETScreen International Small Hydro Project Analysis, Minister of Natural Resources Canada, ( ) Alterach J. et al. - Ricerca di Sistema, Valutazione a livello regionale delle risorse idriche superficiali - Applicazione di procedure di regionalizzazione delle curve di durata delle portate medie giornaliere nell'area montana dall'adamello al versante meridionale delle Alpi Orobiche Rapporto GEN21/IDRO/WP 4.1 IDROUSI/Task 4.1.2/Milestone , 1 (2005) Peviani M., Menga R., Garofano E., Grasso F., Stella G. Ricerca di Sistema Risultati del censimento del potenziale mini-idro e realizzazione del sistema informativo territoriale Rapporto CESI RICERCA Prot (2006) Alterach J., Brasi O., Flamini B., Peviani M. et al. Ricerca di Sistema, Valutazione della disponibilità idrica e del potenziale di producibilità idroelettrica a scala nazionale e di bacino - Rapporto CESIRICERCA Prot (2006) Alessandro Davitti Engeneering Degree Thesis - Fattibilità tecnico-economica di impianti miniidro: software ed applicazioni, Politecnico di Milano, Facoltà d Ingegneria, anno accademico

30 Contacts: Website Julio Alterach Maximo Peviani 30