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Related Applications


Introduction to Energy Storage System (ESS):

Energy storage becomes relevant to optimize generation and consumption of energy at different point of time and also ensure uninterrupted & quality power supply. ESS is an application, wherein Energy generated at one time is used at another time.

While, energy storage comes with different technologies, Battery Energy Storage System (BESS) is one technology that has been developed to store electric charge by using specially developed batteries. BESS has advantage over other storage technologies as it has small footprint, no restriction on geographical locations and ease of mobility.

BESS by utilizing Lithium Ion technology offer high energy and power densities that are suitable for utilizing at distribution transformer level.

BESS components are grouped according to function into battery components, components required for reliable system operation and grid connection components.

Battery Management System (BMS):

The battery management system consists of the Battery Pack, which connects multiple cells to appropriate voltage and capacity. BMS protects cells from harmful operation, in terms of voltage, temperature and current, to achieve reliable and safe operations by balancing varying cell states-of-charge (SOCs) within a serial connection.

Power Conversion System (PCS):

Power Electronics can be grouped into conversion unit, which converts power flow between the grid and battery and the required control and monitoring components.

Energy Management System (EMS):

The EMS is responsible for system power flow control, management and distribution. System thermal management controls all functions related to heating, ventilation and air-conditioning of the containment system. EMS will mainly be required at large scale, Grid Support ESS with multi megawatt systems with multiple megawatt systems with multiple usages. In smaller systems, this could be part of PCS.

Applications of ESS:

ESS applications ranges from grid operators & utilities [reducing costs “Behind-The-Meter (BTM)”] to end users. Battery energy storage systems (BESS) have seen widest range of uses, while others are used in specific applications.

    Grid Operators & Utilities - (Power Quality)

  • Power Reliability
  • Peak Shaving and Load Leveling:
  • Electric energy time-shift (arbitrage):
  • Electric supply capacity:
  • Regulation:
  • Spinning, non-spinning and supplemental reserves:
  • Voltage support:
  • Black start:
  • Load following/Ramping up of renewables:
  • Transmission upgrade deferral:
  • Transmission congestion relief:
  • Distribution upgrade deferral and voltage support:

    Customer (“Behind-the-meter”) Applications:

  • Time-of-Use Bill Management
  • Increased Self-Consumption/Self-sufficiency from Solar plus Storage:

    Key Benefits of ESS:

  • Commercial and Industrial Applications
  • Grid Scale/ Utility Applications
  • Arbitrage
  • Firm Capacity or Peaking Capacity
  • Operating Reserves and Ancillary Services
  • Transmission and Distribution Upgrade Deferrals
  • Black Start

Technical Specifications :

Nominal Battery Voltage 240/360
Out put No.of Phases 3 Phase
Nominal Output Voltage & frequency 400V, 50 Hz +/-2%,(+10%,-20% In Grid Synchronised mode
Voltage Regulation +/- 2% ( In stand alone mode)
Freq. Regulation in standalone mode 0.5 Hz
THD <5%
Load Power factor 0.8 lag to Unity
Efficiency Peak 90%
Over load 110%- 60 Sec, 125%-30 Sec, 150%-5 Sec
Auto By pass feature Provided
Parallel operation with Grid/DG Provided
Grid Synchronisation Provided
Grid Charging Enable/ Disable/ User settable
Power export to Grid facility Enable/ Disable/ User settable

Charge Controller type MPPT
Charger Topology Buck type
PV Nominal capacity total in KW Same as Inverter rating
No. of MPPT Channels 1
Max. Open Circuit Voltage (OCV) 620
MPPT Upper range 515
MPPT Lower range 330
Peak Charging efficiency ≥ 94%

Grid Voltage Range (volt. Sync. Range) +10% & -20 % VAC
Grid Freq. Range( Freq. Sync. Range) +5% & -5% Hz
Max. Grid Import power As per Inverter Rating
Peak charging Efficiency Upto 85%

PV Side Reverse Polarity, Surge Protection ( class D)
Battery Side Reverse polarity, Over/Under Voltage, Current Limit
Grid Side Over/Under Voltage, Over/Under Frequency, Surge Protection –D
Load Side Over load, Short circuit
System Protection Over Temperature, Emergency Stop.

Display Interface Graphical LCD with back lit (128 x 64)
Setting input Membrane Keypad for setting inputs
Battery Paramters Voltage, Current, Cumulative Import Energy
PV Parameters Voltage, MPPT charger output Amps, Power, Energy cumulative
Grid Paratmeters Phase voltage, Frequency, Power factor, Reactive Power
Load Parameters Phase voltage/ current, Frequency, Power, Power Factor, Avg.
System Level Parameters Mode of operation, active faults, Heat sink, IGBT Temperature
LED Indicators Mains ON, Alarm. Buzzer mute

RS 485 Based monitoring showing all parameters through MODBUS
Easy to connect GPRS based Xenius module for remote monitoring of all parameters , ( 5 years data charge + SIM included for 3 phase) as well as remote controlling.
Data logging in micro SD card, All parameters can be logged in Micro SD card as per date & time. Logged parameters can be viewed / saved through Laptop / PC

Degree of Protection IP 21
Cooling method Temperature controlled forced cooling
Operating Temperature 0-55 Deg.c without derating.
Humidity Max. 95 % Non condensing
Altitude 1000 M above sea level
Housing Floor Stand by – Tower type
Cable entry From Rear bottom
IEC 62116, IEC 61727, IEC 61683, IEC 60068 ( 1,2, 14, 30), EN 50530

96 KWh Battery
S.No Description Battery Details
01 Battery Rating 240V-400AH
02 Chemistry, Type Lithium iron phosphate(LFP); Prismatic
03 Model LFP 240V-400
04 Total Energy(KWh) 96
05 Module Rating 48V-100Ah
06 Charging Voltage 274 Volt
07 Standard Charge/Discharge Current 80 Amps / 80 Amps
08 Battery End Voltage 187 Volt
09 Protection Function Over Voltage, Under Voltage, Short Circuit, Over Temperature
10 Operating Temperature range/Charge/Discharge/Storage -/0°C to 45°C/-20°C to +60°C/-20°C to +25°C
11 Humidity 5%≤RH≤85%
12 Expected Cycle Life @ 80 % DOD >2000 Cycles (at 20-25°C)
13 Module Dimensions 480 x 350 x 222 ( W x D x H)
14 Rack Dimensions 650 x 500 x 1680 ( W x D x H)
15 No.of Modules / Rack 5
16 No.of Racks / System 4
17 Module weight / System weight ~60 Kgs / 1360 Kgs