Technical Director INENSUS GMBH DEFINITION OF HYBRID POWER SYSTEMS

Transcription

1 1-2 DEFINITION OF HYBRID POWER SYSTEMS Hybrid power systems are designed for the generation of electrical power. Hybrid systems contain a number of power generation devices such as wind turbines, photovoltaic, microhydro and/or fossil fuel generators. 1

2 3 CHARACTERISITCS OF ISOLATED HYBRID POWER SYSTEMS No connection to a larger network Generation (every moment) must fit demand (every moment) Storage of electrical energy Chemical -> accumulator, hydrogen Potential -> pumped storage Kinetic -> flywheel Electric -> capacitor 4 CAPABILITIES OF HYBRID POWER SYSTEMS they.. can compete with: Diesel gensets in areas hard to access (expensive fuel due to costly transport) High quality 24/7 electric off-grid power supply (e.g. for power supply of base transceiver stations) cannot compete with: Subsidised or not taxed diesel in gensets (cheap fuel) Electricity from the national grid UPS systems connected to national grids with good availability diesel back-up for emergency power 2

3 5 Characteristics of isolated systems by mode of operation automatic semi automatic / manual by penetration of renewable energies 100 % low penetration by operation time 7 24 h intermittent 6 Sine Moussa Abdou Hybrid Power System 3

4 7 8 WIND HYBRID ISLAND SYSTEMS DC coupling a) AC coupling b) PV-Module Wind Generator Genset PV-Module PV-Module Wind Generator Genset other AC System or Utility G G Charge Controller Inverter Loads, 120/240 V 50/60 Hz Loads, 120/240 V 50/60 Hz Optional Optional DC-Bus (0-20 m) AC-Bus (0-500 m) DC-Bus (0-20 m) AC-Bus (0-500 m) Battery (12 V, 24 V, 48 V) Battery (48 V, 60 V) Ba ttery (48 V, 60 V) Source: SMA 4

5 9 AC COUPLED HYBRID POWER SYSTEM Consumer Photovoltaic panel Wind turbine Sunny Boy (inverter) aeocon feed-in converter SG School Hospital Cellphone base station 400 V 3~ 50 Hz SG INENSUS load management and accouting unit (LAU) Village Craft Sunny Island (inverter & battery management) Battery T Diesel/plant oil generator 10 PART LOAD BEHAVIOUR OF DIESEL GENSETS measured fuel consumption [l/h] electrical power [kw] 5

6 11 parallel operation - wind & diesel power[kw] diesel generator wind turbine 0 10:25 10:26 10:27 10:28 10:29 10:30 time [hh:mm] converter and battery system are necessary German wind energy institute: Gerdes; Santjer DIURNAL PATTERN: RESIDENTIAL AREA 180 Residential Area, Hurghdada: Average Daily Power Profile [kw] Mon Tue Wed Thu Fri Sat Sun Time [h] Henrik Isolated with Wind Bindner: Systems Power Results of Measurements in Egypt. Risø National Laboratory, Roskilde June

7 13 DIURNAL PATTERN: MEDIUM SIZED SYSTEM Ras Sudr, Sinai: Average Daily Power Profile [kw] Time [h] Henrik Bindner: Isolated Systems with Wind Power Results of Measurements in Egypt. Risø National Laboratory, Roskilde June 2001 Mon Tue Wed Thu Fri Sat Sun 14 Diurnal load profiles/10min deviation (Egypt) Normalised power Hotel Residential Shopping Ras Sudr Wadi Tal time [hour of day] 7

8 15 WIND DIESEL SYSTEM WITH DIFFERENT STORAGE CAPACITY Degner WIND DIESEL SYSTEM WITH DIFFEREN MODES OF OPERATION Degner

9 17 NICKEL CADMIUM BATTERY Degner LEAD ACID BATTERY Degner

10 19 CONTACT INENSUS GmbH Am Stollen 19 D Goslar Germany Tel +49 (5321) Fax +49 (5321) INENSUS West Africa S.A.R.L. 10, Avenue Faidherbe, B.P. 397 Dakar Sénégal 10