1. Agricultural Loads 2. Time Differentiated Tariff Structure 3. Cost of Energy

Transcription

1

2 1. Agricultural Loads 2. Time Differentiated Tariff Structure 3. Cost of Energy 4. Purpose of the Intervention 5. Results - Commercial Farm - Irrigation Board - Water Users Association

3 1999 winter Moderate Pumping Commercial Paper Text Food Platinum Other manufacturing Other mining Non-metallic Gold Chemicals Basic metals Agriculture

4

5 Ruraflex Tariff Time Zones

6 Low - demand season (September May) Peak Standard Off-peak c/kwh c/kwh c/kwh Peak High-demand season (June - August) Standard Off-peak c/kwh c/kwh c/kwh

7 Reduction of Load during Evening Peak Period Schedule Operation out of the Peak Periods 18h00 20h00

8 J&V Agri Irrigation Area : 2400Ha Crops : Corn in Summer : Wheat in Winter Irrigation : 105 Centre Pivots Production : 30 kt/a

9

10 Canal / River Pump Stations

11 Control System Layout - Automatic Communication ad Pump Lo Electrical Telecom mmunicati ions Equip pment Switch off between 18H00 and 20H00

12 Control System Layout - Manual Communication Load Electrical pment ions Equip Telecom mmunicati Switch off between 18H00 and 20H00

13 Pivot control points Pump station control points

14

15

16

17 Average weekday demand profile 1,200 1,000 kw (3 30 minute) Baseline_kW Actual_kW

18

19 105 Centre Pivots Fully Controllable First Technology Application in this Field Automatic or Manual Scheduling 880kW moved out of Peak Period Operations remain Energy Neutral Save R per annum on Energy Costs Savings on fuel, manpower, vehicles

20 Extraction Control IB Level Chapter 4 of the National Water Act No: 36 of Water work(s) must be equipped by the licensee at his own cost with approved self registering i water meters..

21

22 Extraction Monitoring Association Level ad Pump Lo Electrical Start t & Stop up to 4 Pumps Automatically via sms & Receive Feedback Irrigation Pumps Automatically Switch Off Between 18H00 and 20H00 Access To Website to View Water Usage

23

24

25

26 22:00 23:00 21: : : Impact of Project on Consumption 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 Weekday Baseline Impact 03:00 04: : :00 00:00 01 Energy in kw

27 Complies with new Water Act Water extraction monitoring is centralised Volumes recorded Saving of R1.9 mil per annum on energy cost Savings on fuel, manpower, vehicles

28 OranjeRiet WAU Main canal: 13.6km with a capacity of 54 m 3 /s Pump station: 7 pumps ranging from 650kW to 2000kW electric motors, with the following capacities: 1 * 1 m3/s 1 * 2 m3/s 5 * 3 m3/s Pipe-line to canal: 2 * 1.8m diameter, 900m pipeline with a 47m head. Oranjeriet canal: 112km with a capacity of 15.2 m 3 /s and 13.2 m3/s. A balancing dam with a capacity of m 3 Rietriver canal system: 185km canal with 54km of drainage canals, 103.4km river with 2 weirs and 5 balancing dams with a capacity of m 3.

29

30

31 Conceptual Control Layout Communication Remote gat tes and Telecomm munications Equipment Control Canal water level monitoring and control Central control unit

32

33

34 14 Oranje Riet Water Users Association Average Weekday MW Load Weekday Before Implementation After Implementation

35 1. Special tariff, little cost savings 2. Saving in operational expenses in terms of manpower, transport and fuel costs. 3. The farmers need to contribute less to the operational expenses, realizing a saving for all. 4. Water control and scheduling is centralized. 5. Load management of 9.95 MW in the evening peak 6. To date, the project remains the first and only application of these technologies in this field.

36 Dr Frik Venter Tel: / friktgc@iafrica.com