Simple wind-diesel concept with high wind penetration in Cape Verde - PowerPoint PPT Presentation

Loading...

PPT – Simple wind-diesel concept with high wind penetration in Cape Verde PowerPoint presentation | free to download - id: 66e89d-NDViO



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Simple wind-diesel concept with high wind penetration in Cape Verde

Description:

Simple wind-diesel concept with high wind penetration in Cape Verde Per N rg rd, Ris DTU, Denmark, pern_at_risoe.dtu.dk Jo o Fonseca, Electra, Cabo Verde, j.fonseca ... – PowerPoint PPT presentation

Number of Views:4
Avg rating:3.0/5.0
Slides: 23
Provided by: PerN5
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Simple wind-diesel concept with high wind penetration in Cape Verde


1
Simple wind-diesel concept with high wind
penetration in Cape Verde
  • Per Nørgård, Risø DTU, Denmark, pern_at_risoe.dtu.dk
  • João Fonseca, Electra, Cabo Verde,
    j.fonseca_at_electra.cv

2
Cabo Verde
  • Independent (from Portugal) in 1955
  • Population 500 000 at 10 islands
  • Islands in study
  • Santiago
  • São Vicente
  • Sal
  • (Boa Vista)

3
Cabo Verde
  • Risø DTU as Technical Consultant
  • for InfraCo (international project developer)
  • in collaboration with Electra (local power
    utility company)
  • Power generation based on diesel generation
  • Excellent wind conditions
  • High average wind speeds most of the year
  • Very constant wind
  • Low extreme wind speed

4
Growing demand
5
IPSYS an energy system simulation tool
  • Characteristics
  • Semi-static time series simulation (minutes time
    steps)
  • Includes storage and memory functionalities
  • Designed for mixed energy systems
  • Performs energy balances and load flow analysis
    (power systems)
  • Handles advanced and distributed control
  • Developed by Risø DTU

6
Simplified single line diagrams
7
Operation strategy
  1. Minimum continuous diesel load
  2. Minimum instantaneous diesel load
  3. Minimum spinning reserve diesel capacity
  4. Minimum diesel capacity
  5. Minimum number of diesel generator units
  6. Minimum diesel operation time
  • Minimum continuous load of the diesel engines
    30 (optional 50).
  • To prevent the diesel engines from sooting up at
    low load.
  • The wind power generation may be limited to
    fulfil this condition.

8
Operation strategy
  1. Minimum continuous diesel load
  2. Minimum instantaneous diesel load
  3. Minimum spinning reserve diesel capacity
  4. Minimum diesel capacity
  5. Minimum number of diesel generator units
  6. Minimum diesel operation time
  • Minimum instantaneous load of the diesel engines
    10.
  • To prevent for negative load of the diesel
    generators.

9
Operation strategy
  1. Minimum continuous diesel load
  2. Minimum instantaneous diesel load
  3. Minimum spinning reserve diesel capacity
  4. Minimum diesel capacity
  5. Minimum number of diesel generator units
  6. Minimum diesel operation time
  • Minimum spinning reserve diesel capacity
    connected to the grid
  • 200 of the observed fluctuation of the diesel
    load within the last hour and
  • minimum 50 of the actual diesel load (if
    possible).
  • To be prepared for the fluctuations in the wind
    power and in the load.

10
Operation strategy
  1. Minimum continuous diesel load
  2. Minimum instantaneous diesel load
  3. Minimum spinning reserve diesel capacity
  4. Minimum diesel capacity
  5. Minimum number of diesel generator units
  6. Minimum diesel operation time
  • Minimum diesel capacity connected to the grid
  • 2 times the wind capacity connected to the grid.
  • To ensure dynamic stability of the system.
  • _at_ low load high wind
  • wind turbines are shut down
  • -gt diesel generators shut down

11
Operation strategy
  1. Minimum continuous diesel load
  2. Minimum instantaneous diesel load
  3. Minimum spinning reserve diesel capacity
  4. Minimum diesel capacity
  5. Minimum number of diesel generator units
  6. Minimum diesel operation time
  • Minimum number of diesel generator units
    connected to the grid
  • 2
  • Not to rely on a single diesel generator unit.

12
Operation strategy
  1. Minimum continuous diesel load
  2. Minimum instantaneous diesel load
  3. Minimum spinning reserve diesel capacity
  4. Minimum diesel capacity
  5. Minimum number of diesel generator units
  6. Minimum diesel operation time
  • Minimum operation time of a diesel engine
  • 4 hours.
  • To limit the number of start / stop of the diesel
    engines.

13
Load profiles (3x3 days)
14
Seasonal variation of wind
15
IPSYS results (Sao Vicente)
16
Summary of results
17
Not utilised wind energy
1 p.u. 20 wind energy penetration
18
Avoided diesel fuel
1 p.u. 20 wind energy penetration
19
Minimum diesel load (2012)
20
PPA Power Purchase Agreement
  • Minimum wind energy level take pay _at_ high
    tariff
  • Motivates wind power operator to maximise
    production
  • Additional wind energy _at_ low tariff
  • Motivates diesel operator to optimise operation

21
Conclusions
  • The most critical operation parameter is the
    minimum diesel load.
  • Even at 40 wind energy penetration, the not
    utilised wind energy is only 10.
  • 20 overinvestment in wind power capacity is
    proposed
  • 22 MW -gt 28 MW -gt 0..10 not utilised wind
    energy.
  • This seems economically feasible at 5 reduced
    generation cost (/kWh), with the expected demand
    growth.

22
Thanks! Seeing you at Stand 2463 (Hall 2)
Hall 2
  • Per Nørgård
  • Risø DTU, Denmark
  • pern_at_risoe.dtu.dk
About PowerShow.com