LOW-LAND HYDROPOWER Theory and Praxis September 20 th 2018

Transcription

1 LOW-LAND HYDROPOWER Theory and Praxis September 20 th 2018

2 Program Time Duration Title Speaker 8:45 9:00 15 Registration 9:00 9:40 40 Low land river hydropower: state of Miroslav Marence (IHE Delft) the art and NL example 9:40 10: :00 10:20 20 Example kinetic hydropower: EQA River Identification and assessment of hydropower potential in Sierra Leone Dennis de Ruiter (EQA Projects) Herman Mondeel (Witteveen&Bos) 10:20 10:40 20 Flexible operation of low land hydropower 10:40:11:10 30 Break 11:10 11:50 40 Wave and tide hydropower: frontiers and knowledge gaps 11:50 12: :10 12:30 20 WaveSAX, an innovative wave energy generator Learning from the first deployments of tidal stream turbines Jorn Baayen (KISTERS and Deltares) Peter Scheijgrond (Dutch Marine Energy) Maximo Peviani (RSE Ricerca sul Sistema Energetico) Merel Verbeek (TU Delft) 12:30 13:30 1 hour lunch 13:30 18:00 Site visit 4.5 hours 13:30 departure Delft IHE => 15:00 arrival Sint Michielsgestel 30 minutes visit Low head Dommel plant 15:30 departure => 16:00 arrival Zaltbommel 30 minutes visit EQA River plant 16:30 departure => stop train station Zaltbommel => 18:00 arrival Delft

3 Content River hydropower potential and kinetic energy of rivers Costal hydropower wave, current, tidal energy

4 LOW-LAND RIVER HYDROPOWER Miroslav Marence

5 Hydropower... is renewable source technologies are innovative and tailor-made system solutions means long-term investment creates additional economic value is most efficient energy generation technology is reliable and sustainable energy source that tackle climate change DNV-GL: Energy Transition Outlook 2017

6 Hydropower... is a heart of renewable family has low levelised cost of electricity (LCOE) has low life-cycle emission intensity. Levelised cost of electricity (LCOE) Life-cycle emission intensity by technologies

7 Hydropower facts - Global Global hydropower installed capacity Estimated electricity generated from hydropower 1,267 GW 4,185 TWh

8 Hydropower facts The Netherlands Hydropower has insignificant role Total installed hydropower capacity 38 MW Alphen - 14 MW Linnen - 11 MW Amerongen (Maurik) - 10 MW Hagestein 1.8 MW Roermond MW Gramsbergen 0.1 MW Installed electricity capacity in the Netherlands (MW) Small hydropower capacity in the Netherlands (MW)

9 Power and Energy Energy is capability of doing work, expressed in kilowatt-hours (kwh). Output of the hydroelectric power plant electrical energy. Power is a rate of energy produced or used, expressed in kilowatts (KW) Potential power: 8 H Q Kinetic power, )

10 How hydropower works How hydropower works? Head as a problem in Netherlands

11 How hydropower works Kinetic hydropower

12 Low head turbines Very low head (VLH) turbine Units for head of m. Characteristics: Standardized 8 blades Kaplan turbine Self-supporting structure Slow direct-drive variable-speed permanentmagnet generator Runner blades can be watertight closed Distributor used as a protection grid Embarked rotating trash rake cleaner (1),(2) steel frame structure, (3) turbine hub with 8 turbine blades (4) (5) generator and (6) rotating bar screen cleaner

13 Low head turbines Roth turbine

14 Low head turbines Dive turbine Francis or Kaplan turbine without wicket gates and spiral case Efficiency ~75% Simple turbine structure, less civil work

15 Low head turbines Archimedes screw Developed by Archimedes ( BC) device with a revolving screw-shaped blade inside a cylinder and used as a pump. Today still often used as a pump or also for reclaiming land from under sea level

16 Low head turbines Archimedes screw The screw is highly efficient for low head sites, harnessing up to 87% of the energy captured from the turning motion. Suitable sites range from a one meter up to ten meter heads, and can handle flow rate between 0.1m3/s up to 15m3/s per screw. For low head the Hydro Screw is one of the most efficient sources of hydropower.

17 Low head turbines Archimedes screw

18 Low head turbines Steff turbine The key component of the Steffturbine is the circulating chain, running around two sprockets. Corrosion-resistant steel paddles fixed to the chain transmit the hydropower to an integral, permanent-magnet generator.

19 Low head turbines The Netherlands

20 Low head turbines The Netherlands

21 Low head turbines The Netherlands

22 Alternative hydropower solution European hydropower potential (large scale) almost depleted, possibilities: Small hydropower sector Rehabilitation, life extension, upgrading, optimization Restrains Environmental constrains Energy price Alternative hydropower concept hydropower as an additional function of existing hydro-technical infrastructure Attractive and lucrative Not hindering or endanger main structure function Allows additional energy generation

23 Alternative hydropower solution Installation of small hydropower plants in the existing water infrastructure where electricity generation is not a primary priority - multipurpose schemes Identification of non-traditional solutions = hidden treasury

24 Alternative hydropower solution MJ2 Technologies Sarl

25 SHPP Sint-Micheilgestel Dommel river Weir structure on Dommel river (North Brabant) Constructed field weir with more than 30 m³/s Water management system (water level regulation) Fish passage (2006) with 1.6 m³/s Run-of-river system (design discharge 10 m³/s) Head m Screw turbine selected

26 SHPP Sint-Micheilgestel Dommel river Site Report

27 SHPP Sint-Micheilgestel Dommel river Connected directly on local grid Installation in the middle field of the weir increased costs but was requested by Waterboard The first private project in NL with license on existing river structure Financing model with crowd founding (75%) with almost 500 participants On grid from October 2016 Output 150 kw, MWh

28 IHE Delft Institute for Water Education