Wind Energy Solutions. Hannover 2016
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1 Wind Energy Solutions Hannover 2016 Wind-diesel hybrid system, St. Helena Results & Key succes factors Johan de Leeuw Wind Energy Solutions The Netherlands Hannover April 28 th 2016
2 Content 1. WES Company Why wind energy? Customers Medium size wind turbines WES special technologies Desalination 2. St. Helena 3. Previous situation 4. New situation 5. Benefits & impact 6. The installation 7. Results 8. Key success factors 2
3 1. WES Wind Energy Solutions Dutch company, worldwide market Design, manufacture, maintain and monitoring/operate Midsize wind turbines: 50 up to 250 kw: WES50, WES80, WES100, WES250 Onshore locations: islands, remote area s, agricultural sides, industries and more WES niches: behind the meter Remote areas (logistics) Hybrid systems (wind/diesel) Stand alone Water treatment / Desalination
4 1. WES Wind Energy Solutions Our goal: To bring renewable energy everywhere Why should you use wind energy? Lowering energy costs, less use of diesel generators Lowering carbon emissions Lock in electricity costs for long period Income opportunities related to power generation Less dependence of fossil energy Independence of politics and economical energy situation
5 1. WES Our customers Agricultural companies Small communities Islands and remote locations Utilities with small grids Project developers (Local) governments Investors Companies with green attitude
6 1. WES 2. Medium windturbines ~ 50 kw => ~ 300 kw 6
7 1. WES WES special technologies Hurricane Crane Tilt-Up System Invertor system Hybrid System Passive Pitch
8 WEScada SYSTEM 1. WES
9 1. WES Water and Wind Example: Production gallon per day fresh water Production = fresh water m³/ day: Consumption: 2.47 kwh/m³ x m³ = kwh per day Annual consumption kwh / year Cost of energy WES250: $ 0.14 /kwh Energy cost by WES250: $ 0,3705 /m³ Key figures: 1 us gallon = 3,785 l 1 m3 fresh water needs 2.47 kwh
10 2. St. Helena St Helena Tourism Office 10
11 2. St. Helena 2. St. Helena Remote Island, South Atlantic Ocean 4000 Inhabitants Sovereign British territory Only accessible by boat Ascencion, Cape Town Boat transport capacity limited Until 2016 (Airport ready) Steep and challenging terrain 11
12 3. Previous situation 3. Previous situation 6 aged diesel generators 6 wind turbines (1998 & 2009) 11 kv distribution network Average hourly demand 1 MW 12
13 4. New situation 4. New situation Replacing 4 existing generators (3 Cat 3516B & 1 Cat 3508B) Extensive control system IMC Worldwide Senergy Barloworld Power New 11 kv switchgear More Wind turbines (total 12) Dec 2012 system operates reliable, operators trained 13
14 4. New situation WES Hybrid concept Controlling the maximum power output Primary Control: based on grid frequency (Passive pitching) Secondary Control: based on communication B(Optical, Ethernet etc.) Passive Pitching Maximum rotor speed limitation Reduced power production is possible 14
15 WES Hybrid concept 4. New situation
16 5. Benefits & Impact 5. Benefits & Impact 1 Since 1998 three turbines have been operating on the island and can deliver kWh/year to the local grid During the 15 or so years since these turbines were installed, the use of electricity on the island has doubled Another three turbines were added in : WES has installed another six turbines to the island. The estimated pay-back time for the turbines is 2-4 years Deadwood plain st.helena 16
17 5. Benefits & Impact Benefits & impact 2 The diesel station is controlling the maximum power output of the wind turbines Up to 60% of the electrical power has been supplied by the wind turbines With the addition of 6 turbines the target is to reach a wind penetration level of 80% or more Diesel Saving 1L Diesel = 36 MJ/l = 10 kwh/l Efficiency of diesel gen-set = 30% 1L Diesel makes 10*30% = 3 kwh 1L Diesel = 1,- 1 kwh costs 1,-/ 3 kwh= 0,33 1 x WES80 at 18m tower producing about BB kwh/year = saving about l/year SCADA (Supervisory Control And Data Acquisition) 17
18 6. The installation off 6. the installation of 18
19 6. The installation off the installation of 19
20 6. The installation off the installation of 20
21 6. The installation off the installation of 21
22 7. Results 7. Results 22
23 7. Results 7. Results A rough estimate of the savings during the period production of green electricity by wind: kwh 2. price per kwh produced by diesel: 0,40 3. price per kwh produced by wind: 0,11 Savings during period 2009 till 2015 ~ In the future the production will be ~ kwh/year (based on 12 WES80 wind turbines) The savings will then be about Euro per year 23
24 8. Key success factors 8. Key success factor 1 Act local Cooperation with a strong local company is crucial for success. The high availability of the turbines of 98% is possible due to: advanced digital monitoring first line maintenance by trained local engineers and second line support from WES. 24
25 8. Key success factors Key success factor 2 Logistics Preparation of the logistics is key and the turbine should be suitable for the transportation. A boat trip of 5 day brought the WES installation team and the containers (turbines are designed to fit into a container) to the island. On the island the team had to manoeuvre the material to the location. 25
26 8. Key success factors Key succes factor 3 Operational Excellence This type of project can only be carried out successfully with: top project management a very motivated and experienced team of engineers within the company > 100% quality and control Every detail counts and can have a great impact on the result! 26
27 THANK YOU! Johan de Leeuw 27
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