Renewable Energy Integration: Wind, Solar and Energy Storage

Transcription

1 Renewable Energy Integration: Wind, Solar and Energy Storage ReGen Powertech Archit Khemka

2 Technology Overview: Wind Solar Hybrid with Energy Storage Concepts Co-located System Two largely independent generation systems located in close-proximity to each other in order to share larger transmission equipment and broader transmission infrastructure. E.g. sharing of a common sub-station and grid infrastructure Photovoltaic Solar Power Conditioning Unit Solar Inverter AC Meter (Solar) Common Power sharing control circuit and communication HV Line Wind Generator Wind Power Conditioning Unit AC Meter (Wind) AC Meter (Hybrid) Line Protection Storage System Storage Power Conditioning Unit Net Meter (Storage) To Substation

3 Inverter Technology Overview: Wind Solar Hybrid with Energy Storage Concepts True Hybrid - Two technologies may work in tandem and use common components to produce a single electrical output more efficiently than either approach could on its own Common Photovoltaic DC junction Step-up Solar Power Conditioning Unit DC Meter (Solar) D C Power sharing control circuit and communication L i n k HV Line Wind Generator Wind Power Conditioning Unit Rectifier Step-up DC Meter (Wind) AC Meter (Hybrid) Energy Storage Energy Storage Power Conditioning Unit Step-up/Step-down DC Meter (Storage) ReGen s unique technology allows for integration of wind and solar in a single output therefore allowing for a True Hybrid solution Output of combined system is capped at rated output of Wind turbine (ie. 1.5MW) Line Protection To substation

4 Technology Overview: Advantages of Wind Solar Hybrid with Energy Storage Stable power output improved power generation profile due to the complementary nature of wind and solar. Addition of energy storage system reduces the intermittency to the grid. Better utilization of grid infrastructure same evacuation network shared between wind and solar resulting in maximum utilisation of grid infrastructure Reduced cost of land more power generated per unit area and better utilization of unused land available adjacent to the wind turbine Improved system efficiency transmission losses decreased and better utilization of transmission and shared electrical infrastructure Easier operations and maintenance O&M of True Hybrid park more economical and easier due to common components and resources 4

5 Technology Overview: Advantages of ReGen True Hybrid with Energy Storage System Advantage ReGen s advanced gearless turbine incorporates a three step AC DC AC conversion thereby allowing integration of additional DC voltage into the system Higher capacity addition Potential of adding up to 1000kW solar power for every 1.5MW ReGen turbine in existing and new projects Further cost reduction No additional requirement of inverter or transformer which may be necessary for other systems Faster project execution Statutory approvals and time required for constructing power evacuation facilities is avoided due to common evacuation system Higher efficiency of inverter/power-converter Inverter s efficiency improves when it runs closer to full capacity due to common inverter SCADA connectivity ReGen s Hybrid SCADA integrates both wind and solar park and offers high level of sophistication for control and monitoring of the combined system Retrofit Option of converting existing ReGen wind turbine into True Hybrid system by addition of Solar PV 5

6 Power in kw Wind Solar Hybrid - Power Generation trend Avg. annual hourly power gen comparison (1.5MW Wind MW Solar) Wind only Solar only Hybrid :00 03:00 06:00 09:00 12:00 15:00 18:00 21:00 00:00 Hour of day [hr] 6

7 Power in kw A case for Energy Storage Avg. annual hourly power gen comparison (1.5MW Wind MW Solar) Wind only Solar only Hybrid Storage for 4 hours :00 03:00 06:00 09:00 12:00 15:00 18:00 21:00 00:00 Hour of day [hr] 7

8 Infrastructure Utilization & Cost Savings Grid Infrastructure More Efficiently Utilized Source of Power Units Transmitted Grid PLF Wind Only (1.5 MW) 35,64,551 28% Solar Only (0.75MW) 12,48,300 19% ReGen Hybrid (1.5 MW MW) 48,12,851 37% * Above is an estimation based on a selected site in Rampuriya, RJ and will vary for every location The same grid infrastructure will be utilized at greater efficiency levels with no further investment The amount of firm power injected into the grid increases as wind and solar complement each other Key areas of cost savings in Wind Solar Hybrid i. Capital Expenditure Savings ii. Revenue Expenditure Savings Parameter Land 2.50% Power Evacuation 5.00% Yard Electricals 3.00% Inverter 5.00% Total 15.50% Percentage Saved Compared to Standalone Solar Parameter O&M per Annum per MW 25% Percentage Saved Compared to Standalone Solar 8

9 Indian Experience - ReGen True Hybrid project in Tamil Nadu 9

10 Power in kw Indian Experience: Actual Generation details Hybrid data on 20/07/2015 to 24/08/2015 Installed PLF Generated [kwh] Wind (1.5 MW) 36.05% 4,54,179 Solar (0.2MW) 16.50% 27,720 Hybrid 38.25% 4,81, Actual Average Power Production Solar Hybrid Wind 0 00:00 04:00 08:00 12:00 16:00 20: Time of the day 10

11 Applications for Energy Storage in Wind Solar Hybrid Frequency Regulation and Response Energy Time shift Power smoothing and ramp control Micro grids Scheduling and forecasting Grid non-availability 11

12 Way Forward Policy Initiatives and Regulatory Framework to promote the Integration of renewable energy projects Identify objectively applications for energy storage in wind and solar projects and implement mandatory storage requirements for utilities Support with Regulatory Approvals for implementing hybrid projects Provide financial incentives and accelerated depreciation benefits to promote investment in projects Acceptance of DC metering by utilities to achieve maximum hybridization of wind and solar projects as it is necessary to bifurcate the power generated so their respective tariffs can be awarded PPA conversion of existing brownfield projects into wind solar hybrid with energy storage Fulfillment of RPO obligations Challenges of Financial Closure of Hybrid Project 12

13 THANK YOU THANK YOU 13