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

Electrochemi cal

• Primary

Battery

• Secondary

Battery (Lead acid/ Li-Ion/Na-S etc)

• Flow

batteries (Redox/ Hybrid Flow) Mechanical

• Pumped

Hydro Energy Storage (PHES)

• Flywheel

Energy Storage (FES)

• Compressed

Air Energy Storage (CAES) Chemical

• Hydrogen
• Fuel Cell
• Liquid

nitrogen

• Oxy-

hydrogen Electrical

• Super

Conductive Magnetic Energy Storage (SMES)

• Super

capacitors / Ultra Capacitors / Electric double layer capacitors Thermal

• Sensible

Heat Storage (Molten Salt/ synthetic Oil etc)

3

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

• 60-75

20ms 700-2500 150-1000 Demonstration Capacitor 2--10 100000 0-0.05

• 40

minutes 10-Jan 50,000+ 75-90 70+ <1/4 cycle 200-400 500-1000 Commercial Super- capacitor 10--30 100000 0-0.3 0.005 10–40 10–30 100,000+ [4], 95 85-95 <1/4 cycle 100-300 300-2000 Developing Hydrogen Fuel cell 500-3000 500 58.8 39 Almost zero 20+ 20,000+ 60 45-60 <1/4 cycle 500-3000 15 Developing

4

Comparison of Various Storage technologies

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

• peration

Spinning reserve

5

BHEL Project

6

• 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

7

SLD of the Proposed BESS

Proposed Applications

8

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

Proposed Applications

9

• 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

Proposed Applications

10

• 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