RENEWABLE INTEGRATION By Bharat Heavy Electricals Limited In - PowerPoint PPT Presentation

BATTERY BASED ENERGY STORAGE SYSTEM (BESS) FOR RENEWABLE INTEGRATION By Bharat Heavy Electricals Limited

In Introductio ion Why Energy Storage Systems (ESS)? ESS enables time shifting between electricity generation and for following applications. Power Quality Energy Management (Seconds) ( Minutes) (Hours) Voltage Support Spinning Reserve Peak Shaving Frequency Regulation Unbalanced load compensation Renewable Power penetration Flicker Compensation Uninterruptible Power supply Energy Trading / Arbitrage Transient Stability Black start Source Leveling LVRT Support Line upgradation deferral Islanded Operation

Energy Storage Systems Chemical Mechanical Electrical Thermal Electrochemi • Hydrogen • Pumped cal • Sensible • Super • Fuel Cell Hydro Heat • Primary Conductive Energy Storage • Liquid Magnetic Battery Storage (Molten Salt/ Energy nitrogen • Secondary (PHES) synthetic Oil Storage • Oxy- Battery etc) • Flywheel (SMES) hydrogen (Lead acid/ Energy • Super Li-Ion/Na-S Storage capacitors / etc) (FES) Ultra • Compressed • Flow Capacitors / Air Energy batteries Electric Storage (Redox/ double layer (CAES) capacitors Hybrid Flow) 3

Comparison of Various Storage technologies Technology Energy Power Power Rated Daily Lifetime Cycling Discharg Cycle Respons Power Energy Technology efficienc density (W density Rating Energy self- (years) times e e time Capital capital status efficienc h/L) (W/L) (MW) capacity( discharg (cycles) y (%) cost cost MWh) e (%) y (%) ($/kW) ($/kWH) Lead – acid 50-80 0.1 – 0.3 5 – 15 10-400 0-40 0.0005- 200-1800 85 75-85 <1/4 120-600 50-400 Mature 40 cycle 5 – 16 Li-ion 200-500 1500- 0-100 0.004- 0.1-0.3 1000- 85 75-90 <1/4 300-1000 240-750 Commercial 10000 100 20000 cycle 10 – 20 NaS 150-300 140-180 1-34 0.4-244.8 Almost 2500 - 85 75-90 <1/4 350-3000 300-500 Commercial zero 4000 cycle 0.03 – 0.6 10 – 20 2000 – - NiCd 60-150 80-600 40 0-40 85 65-80 <1/4 500-1500 400-1000 Mature 3500 cycle VRB 25-35 2 0.03-50 0.2-60 >0.01 20 12000+ 75-82 70-80 <1/4 750-1000 650-900 Commercial cycle 5 – 10 ZnBr 55-65 25 0.05-10 0.05-40 >0.01 2000+ 70-75 70 <1/4 750-1000 650-900 Commercial cycle 10 – 15 – PSB 20-30 2 1--15 0.06-120 >0.01 - 60-75 20ms 700-2500 150-1000 Demonstration Capacitor 2--10 100000 0-0.05 -- 40 10-Jan 50,000+ 75-90 70+ <1/4 200-400 500-1000 Commercial minutes cycle 10 – 40 10 – 30 Super- 10--30 100000 0-0.3 0.005 100,000+ 95 85-95 <1/4 100-300 300-2000 Developing capacitor [4], cycle Hydrogen 500-3000 500 58.8 39 Almost 20+ 60 45-60 <1/4 500-3000 15 Developing Fuel cell zero 20,000+ cycle 4

Applications of Battery Energy Storage System Energy Application Power application Peak shaving Voltage support Output smoothening of Frequency regulation renewable energy resources Capacity Firming Unbalanced load compensation Energy trading / arbitrage Flicker compensation Load leveling LVRT support Micro grid / Islanded Spinning reserve operation 5

BHEL Project • Battery Based Energy Storage system (BESS)( With 3 types of batteries of total energy 1 MWh) with 500 kWp SPV power plant for following applications a) Capacity Firming b) Time shifting of energy consumption c) Load Leveling d) Ramp Rate Control of renewable energy generation 6

SLD of the Proposed BESS 7

Proposed Applications 1. Capacity Firming: In this application, the BESS system will be controlled such that net power from 500 kWp SPV plant with 1 MWh battery will be exported to grid at a pre- determined power level for a given duration. Benefits envisaged: a) Establishment of Energy Storage System technology for mitigation of intermittent nature of power generation from renewable energy sources b) Establishment of BESS technology with different types of batteries with merits and de-merits of each one 8

Proposed Applications 2. Time shifting of energy consumption: In this application, energy generated from the 500 kWp SPV plant will be used for charging the battery during day time and the same will be used to feed 200 kw of load for 5 hours during night time in Corp R&D, BHEL, Hyderabad Benefit envisaged: a) Establishment of Energy Storage System technology for time shifting applications. b) The same technology will also be used for islanding applications 9

Proposed Applications 3. Load Leveling : In this application, the maximum power drawn from the BHEL R&D campus will be limited to pre-determined value with BESS along with 500 kWp SPV plant Benefit envisaged: Establishment of Energy Storage System technology for load leveling and Peak load shaving 10