narada bess presentation

An Expert of Energy Storage Solutions.

Energy storage system

For large-scale application

By Walter. Jin

[email protected]

+86-18917365151

The background

Stored Energy Solutions for a Demanding World!

What is Energy Storage?

Schematic of Battery storage system

AC Transformer

DC

AC

DC breaker

AC breaker

Storage device Power Conversion System

Monitor


Narada ESS introduction The diagram of energy system

Batteries PCS

DC combiner

DC

DC

AC

PV array

DC combiner

Inverter

DC

DC

AC

DC

DC

Wind

Diesel

Loads

AC

AC

AC

Transformer

400V 400V 10KV


The background of climate Why Energy storage?

Challenge from climate

As consumption of fossil fuel, we are facing a serious

problem of Global warming, which would bring a lot

of negative influence to our ecological conditions,

environments and even to our lives.

Commitment from Paris

At 12th December 2015, Paris agreement has been

approved by each UN member, which means

everybody from now on should take responsibility to

reduce carbon emission. The total objective is to

control emission at 40 billion tons before 2030.


Influence from new energy Why Energy storage?

No renewables

23% renewables

11% renewables

35% renewables

Variable generation affects grid operations

New energy and Grid

In order to reduce traditional

fossil fuel, more and more new

energies have been put into

use, however they have a vital

defect when grid connected

due to their characters, called

fluctuation, which will affects

grid operation greatly when

they are unstable

Energy storage is the solution

for stable power supply!!!


Adjustment for new energy Why Energy storage?

Shave peak and fill valley

The new energy (especially solar power) is usually unstable, influenced greatly by environment,

as a result the generated power would easily impact end users or grid power ,

while storage system is a good solution to eliminate such impact

KW PV consumption pattern

PV power generation


Power demand with storage

Power demand without storage

Main function of storage >

Less power adjustment, improve

efficiency of power generation

Buffer as a backup power for

emergency and gird fluctuation

Higher security level for black

start, lower possibility of accident

Less investment on capacity of

transmission for grid network

Adjustment for grid power Why Energy storage? P

ow

er

load

in

dex

6AM 6PM 12:00 00:00

Peak load only few hours a day!

Charge from grid

Discharge to grid

Charge from grid

0


Function of storage Why Energy storage?

Capacitive Inductive

U φ

Discharge

Charge

Smn

SN

Sm2n

Q S

Reactive Voltage control

--- Dynamic reactive power (Q) input & output

for voltage and frequency correction

--- Pure phase shift capability to adjust

apparent power (S)

--- Active filter of selected harmonics capability

Operation diagram

of Lithium battery



4 quadrant operation

--- Charge and discharge capability at any

cosφ for power factor correction

--- Dynamic power input and output for

voltage and frequency correction

--- Operates as a virtual rotating mass,

to absorb high load transients

--- Capability for black start service

Power frequency regulation

Black start service by storage

Generator

Start Energy

Energize

Transmission Line Energy ramp down

as generator

pick up load

TIME

BESS

Ou

tpu

t (M

VA

) G

rid

Fre

qu

en

cy

TIME

Frequency with storage

Frequency without storage



Power generation variance

Fluctuation

in load line

MEG

AW

AT

TS

On-grid peak demand shifting

OU

TP

UT

TIME

Original load

Charging

Smoothed load

Discharging Demand shift ON-Grid energy storage

--- Grid services provision: intermittency

mitigation, quality improvements…etc.

--- Symmetric current injection capability

--- 1 + 1 resilience and reliability capability



OFF-Grid energy storage

--- Regulates to within ±1% voltage and

frequency of diesel generator set

--- Provides virtual rotating mass, dynamic

voltage and frequency controls

--- Ability to handle asymmetric current

and load conditions

--- Supports peak shaving and load shifting

Peak shaving function

Peak hour of electricity demand

(12:00 ~ 16:00)

Peak Cut

0:00 6:00 12:00 18:00

Load levelling function

PO

WER

TIME

Power supply

Demand

Discharge from storage


Data center

Energy saved and power density

increased in order to improve

network and cloud performance

PV + storage

Increase the efficiency of PV

system, obtain more solar energy

from panels as well as earnings

Industrial UPS

Flexible, extendible, greater

access, fault tolerant design

with redundancy built-in

Micro-grid

Functions as: Load levelling, peak

shaving, transient suppression

and power factor correction…etc.

Value creation in applications Why Energy storage?


Market prospect Why Energy storage?

Attractive market and big Chance

According to investigation of BCG(the Boston Consulting Group), by year 2030 , the total demand of global

energy storage will be up to 330GWh, mainly in three aspects: a. stable power supply for grid; b. power

balance for distributed energy; c. for island or off-grid market, whose capacity is about 25 to 50 billion euro

Total installation of energy storage system in recent years

ESS with lead-carbon battery


Narada Energy Storage System

Brief introduction

Narda ESS is a smart management system of

energy, ideally for micro-grid solutions, in order

to smooth power, track grid load and shave peak


Application of Narada ESS Narada ESS introduction

Solar power

Wind power

Traditional Transmission

Auxiliaries

Commercial

Industrial

Residential

Energy consumption Energy production

Energy delivery


Main 4 sorts of scenarios Narada ESS introduction

Narada ESS system Grid modulation

Island Off-grid

Giant On-grid

Urban Micro-grid


• Cells → Modules → String

• Power & Capacity configurable

• To store and release energy

1. Battery pack group

• AC to DC conversion (charge)

• DC to AC conversion (discharge)

2. Power Convert System

• Smart ventilation system

3. Accessories

Structural sections Narada ESS introduction


Parameters BESS-1000 BESS-2000 BESS-4000 BESS-4000

System capacity 1MWh 2MWh 4MWh 8MWh

Rated power 125KW 250KW 500KW 1MW

On-grid voltage 400V ± 10% 400V ± 10% 400V ± 10% 400V ± 10%

On-grid frequency 50HZ/-6%+3% 50HZ/-6%+3% 50HZ/-6%+3% 50HZ/-6%+3%

Wiring mode 3 phases 4 wires 3 phases 4 wires 3 phases 4 wires 3 phases 4 wires

System efficiency ≥ 85% ≥ 85% ≥ 85% ≥ 85%

Containers size 45feet containers for batteries and 20feet container for PCS

Container Qty 2sets 3sets 5sets 9sets

Conversion efficiency ≥ 98% ≥ 98% ≥ 98% ≥ 98%

Battery type Lead-carbon Lead-carbon Lead-carbon Lead-carbon

Rated voltage 672V 672V 672V 672V

Working voltage 605-773V 605-773V 605-773V 605-773V

Nominal capacity 1.34MWh 2.69MWh 5.38MWh 10.75MWh

Cycle life 5000@40%DoD 5000@40%DoD 5000@40%DoD 5000@40%DoD

Technical specification Narada ESS introduction


24

38

mm

12192mm

REXC-600 batteries

A

C

A

C

A

C

A

C

Thermal management

door Lights Lights

BMS

BMS

Sensor Nozzle

Structural sections Narada ESS introduction

Vertical view of lead-carbon batteries with racks in 40feet container

door door

Thermal management


Highlights of Narada ESS

BMS

Special BMS control

Smart thermal management

Intelligent SCADA system

Active balance technology


1. Active balance technology Highlights of Narada ESS

Battery of

big capacity

Battery of

Small capacity

In a battery pack, the one with small capacity will easily get over charge

and over discharge, so the service life of whole pack shall be influenced

Active balance technology

With such technology, the energy could be

transferred and balanced between each battery

in the pack at any time without any energy loss


Unify battery performance by active balance technology at ay time

> Charging balance > Discharging balance

Longer battery life Easier maintenance Better protection

1. Active balance technology Highlights of Narada ESS


2. Special BMS control Highlights of Narada ESS

SCADA

BMS

Narada PCS controller

• Highly precise current temperature

• High efficient balance controlling

• Highly precise voltage inspection

• Active balance for heavy current

• Multiple protection for safety

• Practical evaluation of SoC

• Records of historical events

• Better user experience

• Smart BMS interface

• High reliability

Main characters of Narada BMS


2. Special BMS control Highlights of Narada ESS

Build up a mathematic model for storage system by software, then analyze and calculate to optimize

structural parameter, save response time, prevent influence from harmonics, and to improve power quality

Controlling schematism

PV array

Grid

Controller

Batteries

Charging unit

BMS

Inverter

By pass

Central control

Load

Host PC

Power line

Communication


3. Thermal management Highlights of Narada ESS

Optimize the operational temperature by the unique ventilation system

Enhance energy availability Unify the performance of each battery


3. Thermal management Highlights of Narada ESS

Ventilation system

Air condition and inlet


4. Monitoring platform Highlights of Narada ESS

Real-time monitoring and remote control on the energy storage system

Friendly interface Distributed datalog Multiple protocol Flexible setup

Monitoring system

Ethernet MODBUS TCP/IP

Ethernet IEC104/TEC6158C

Battery units

CAN bus

PCS

Unit detection

Local database


4. Monitoring platform Highlights of Narada ESS

Interface of Narada SCADA

Profit model


3 sorts of invest modes ESS Business Model

• Frequency modulation

• Auxiliary power service

• Response at demand side

• Direct sell power

• ……..

Services

• Battery modules

• Storage integrated system

• BMS & EMS software

• Monitoring system

• ……..

Products

• Evaluation as 3rd party

• Maintenance as 3rd party

• Financing and leasing

• EPC main contract

• ……..

Variants


• Save more energy

• Reduce carbon emission

• Central power supply for

industrial parks to attract

more investment and business

Power Grid

Government Enterprise

• Much safer power supply

• Balance peak load from grid

• Less pressure in transmission

• No invest but enjoy EMC service

• Reduce production cost

• For emergency power

• Less CO2 emission

Benefits for multiple sides ESS Business Model


3 sorts of invest modes ESS Business Model

Duration Warranty Income share Depreciation Subsidies VAT deduction Cost saved

N/A 5 years C: 10%, N: 90% N: 100% N: 100% C: 100% C: 100%


N/A 3 years C: 100% C: 100% C: 100% C: 100% C: 100%


N/A 3 years C: 100% C: 100% C: 100% C: 100% C: 100%

Self-raised funds Customers (C) will invest projects all by themselves

Energy management Contract Narada (N) will invest projects

System leasing Narada (N) will invest projects, customers pay by instalments


Types DoD*Cycles Capacity Efficiency Battery Cost (USD/KWh)

Power Cost (USD/KWh)

Lead-acid 0.6*5,000 3,000C 90% 0.15 0.057(0.046*)

Lithium ion 1*2,000 0.3*20,000

5,000C 95%

0.46 0.097

Redox flow 1*13,000 13,000C 80% 1.54 0.148

Economical comparison of chemical storage

* Remark: About 30% material cost of lead-acid can be recovered

Reference: IEC：Electrical Energy Storage，White Paper 2011.12

Cost of energy storage ESS Business Model


Item list of 10MWh system Specification Investment (USD)

Carbon-lead batteries (Pb-C) 2V-1000Ah 1,538,462 (1,076,923*)

Power convert system (PCS) 500KW 153,846

Container 45 feet 153,846

Battery management system (BMS) 76,923

Energy management system (EMS) 153,846

Battery management system (HMS) 76,923

Reconstruction of power distribution 76,923

Installation and commissioning 76,923

Total 2,307,692 (1,846,154*)

* Remark: About 30% material cost of lead-acid can be recovered

The cost of 10MWh system with Pb-C battery is about USD0.092/KWh!!!

Cost of energy storage ESS Business Model


Time zone

A B C D E

USD/KW

USD0.049/KW

Hour

USD0.171/KW USD0.171/KW

USD0.103/KW USD0.103/KW

Buy Sell Sell Stop Stop

How to make profit ESS Business Model

It is profitable to choose some special regions

for project location where the price difference

of electricity is quite big during a whole day.

As right diagram shows, the difference

between day and night is: USD0.171 - 0.049 =

USD0.122, which can cover the cost of energy

storage system, and the rest is profit

Select project location

For sure those regions with various subsidies

are also welcome , that helps a lot to speed

up the payback period of project investment


Parameters Values Remark

Total installed power 1.25MW

Total capacity of energy storage 10MWh

Site area of installation 344.4m2

Service life of batteries 6 years 5000times @40%DoD (2times per day)

Total investment of project USD 2.31 million Data from Cost of energy storage

Total revenue of project USD 2.87 million Total revenue=a+b+c

a. Electric bill saved USD 2.13 million USD1015/day*350days*6years

b. Subsidy for demand response USD 0.115 million USD15.38/KW*1250KW*6years

c. Direct subsidy of government USD 0.162 million USD129.2/KW*1250KW

d. Recovery of battery USD 0.462 million 30% cost of lead-acid recovered

Payback period of investment 4.8 years Annual ROI =4.1% (in 6 years)

How to make profit ESS Business Model

Case study of a storage project in China


We have designed and deployed a number of renewable generation based energy solutions to many important markets in order to enable a CO2 neutral energy solution for our customers with an attractive CAPEX and OPEX value proposition

Our vision

Why choose Narada Narada responsibility


Something more than profit Narada responsibility

When we save 1MWh

power, We can........

Stop 1 ton CO2 emission

Save 25 trees

Save 5Km trip by car

Immeasurable by money…..

ESS with lithium-ion battery


NCA(Li-Ni-Co-Al) NMC(Li-Ni-Mn-Co) LMO(Li-Mn-Spinel)

LTO (Li2TiO3) LFP (LiFePO4)

Why LiFePO4 chemistry Narada storage system


• Operating

temperature

• Toxicity

• Cost

• Internal

impedance

• The rate of

self discharge

• The charge

acceptance

• Coulombic

efficiency

• The power

delivery(C rate) • Energy

density

• Cycle life

• Safety

• Calendar life

Why LiFePO4 chemistry Narada storage system

80% SOC T=25oC T=35oC

100% DOD 3500cycles 3000cycles



> Non-toxic, recyclable

> Reliable, long life span

> Good performance

> Safe and economical

LFP advantages


Technical specification Narada active module

Module 500V type

Module Voltage: 500Vdc

Module Power: 12.8KW

Module Capacity: 5.1KWh

The unique bi-directional, digitally controlled ultra

high efficiency energy storage module: simplified

architecture with BMS and switch gear integration,

reliable, high quality, high efficiency, cost effective.


Parameters Values Parameters Values

Cell numbers 20 Dimension 420*225*610mm

Operational voltage 410~550V Weight 60kg Max.

Over voltage protection 565V Charge temperature 0~60℃; derate>55℃

Under voltage protection 390V Discharge temperature -20~60℃; derate>55℃

Charge current range 1~12A Storage temperature 0~45℃

Discharge current range 1~30A Humidity 0~95%

Balancing & Monitoring Yes, per cell Cooling By forced air

Overload capacity 37.5A Audible Noise 60dBA

Short circuit limit 39A Shock & Vibration IEC60068-2

Turn-on time 5 seconds Reliability >150,000 hours

HV sense circuit limit 750Vdc Safety Certification CE Mark, cUL, UN label

Draw in sleep mode <1W EMC-Class A CISPR22 (EN55022)

Self-discharge(25℃) 1%~3%/month Environmental standard RoHS 6/6, WEEE

Self-discharge(35℃) 5%~6%/month Ingress protection IP20

Specification of Module 500V Narada active module


Module 900V type

Module Voltage: 900Vdc

Module Power: 12.8KW

Module Capacity: 10.2KWh

The unique bi-directional, digitally controlled ultra

high efficiency energy storage module: simplified

architecture with BMS and switch gear integration,

reliable, high quality, high efficiency, cost effective.

Technical specification Narada active module



Cell numbers 40 Dimension 435*415*615mm

Operational voltage 650~900V Weight 130kg Max.

Over voltage protection 950V Charge temperature 0~60℃; derate>55℃

Under voltage protection 600V Discharge temperature -20~60℃; derate>55℃

Charge current range 1~12A Storage temperature 0~45℃

Discharge current range 1~15A Humidity 0~95%

Balancing & Monitoring Yes, per cell Cooling By forced air

Overload capacity 16A Audible Noise 60dBA

Short circuit limit 17A Shock & Vibration IEC60068-2

Turn-on time 5 seconds Reliability >150,000 hours

Ripple and Noise 1.5Vrms Safety Certification CE Mark, cUL, UN label

Draw in sleep mode <1W EMC-Class A CISPR22 (EN55022)

Self-discharge(25℃) 1%~3%/month Environmental standard RoHS 6/6, WEEE

Self-discharge(35℃) 5%~7%/month Ingress protection IP20

Specification of Module 900V Narada active module


Mechanical dimensions Narada active module

435mm

614.8mm

41

5m

m


Features & Benefits Narada active module

Ultra High efficiency(Optimized at 96.8%)

Extensive DSP controls, managing a dynamically optimized topology,

with a flat efficiency curve between 5A to 12A load but less components

Leading power density(1.9W/1.7Wh/in3)

Reduced energy losses with an optimized topology enables a small

footprint, creating both lower capital investment and operating cost

Wide input voltage(Range: 650V~900V)

The high reliability, multi-stage redundant protection is designed to

our products, to meet the tough environments of rugged applications

mlt charging regime (15% more lifespan)

Our multi-mode intelligent charging algorithm enables to create

an optimum V-I envelope for both charge and discharge curves

Plug and Play compatibility

Flexibility and freedom in system configuration with minimal cost


Electrical specification Narada active module

Module 500V

Module 900V

Module 480V

• Voltage: 410~550Vdc

• Power: 12.8kW

• Capacity: 5.1kWh

• Voltage: 480Vac, 3Φ

• Power: 8kVA


• Voltage: 410~550Vdc

• Power: 12.8kW


20 cells

40 cells

40 cells

DC

DC

DC

DC

DC

DC DC

AC


Solar + storage integration Narada active module

800Vdc, 15A

Module

Module

800Vdc, 15A

800Vdc, 15A Module

Conventional AC coupled plan

-- Efficiency: 0~1.0MW→ 98.2% (PV)

0~1.0MW→ 98.2% (ESS)

-- Note: no expansion more than

AC rating of PV inverter

Innovative DC coupled plan A

-- Efficiency: 0~1.0MW→ 97.7% (ESS)

1.0~1.5MW→ 94.5% (ESS)

-- Note: Retrofit for existing PV system

Innovative DC coupled plan B

-- Efficiency: 0~1.0MW→ 97.7% (ESS)

1.0~1.5MW→ 94.5% (ESS)

-- Note: For new building system


Rack for batteries Narada active module

20

77

.85

mm

50

mm

700mm 553.2mm

The rack design builds on the resilience of the

modules. Each rack can contain up to 5 modules

connected in parallel and fused to the 900V high

voltage bus bar.

The drawing at left side shows 4 modules in the rack.

Most of the racks in the solution will have 4modules,

but 25% will also be populated with a 5th module.

The height of the 5 module rack is 2.54m or 460mm

Rack Design & Performance


Narada active container



Total capacity 1,402kWh (800V 1,900A) Dimension 6*2.4*2.9m

Output Voltage 650~900V Weight 23,000kg Max.

Output Power 1,690kW Charge temperature -20~60℃

Max. output connection Qty. 6; 800V, 320A Discharge temperature -20~60℃

Turn-around efficiency above 95.3% Storage temperature 5~45℃

Scalability 14.0MWh per block Humidity 0~95%

Grounding 30kA max. ground fault Cooling Thermal management

Footing Min. 6 required Audible Noise 60dBA

CO2 sequestration 60~75 CO2 eTons Shock & Vibration IEC60068-2

Security Level Firewall+Encryption Quality Standard ISO/TS16949:2009

Altitude up to 2000m Safety Certification CE Mark, cUL, UN label

Sustainability Design Circular Life-Cycle EMC-Class A CISPR22 (EN55022)

Fire Suppression Benign Ionic Salt Environmental standard RoHS 6/6, WEEE

Internal communications GigaBit Ethernet Ingress protection IP56

Technical specification Narada active container


Features & Benefits Narada active container

More PV energy extraction

Our unique architecture extracts more energy

from the solar panels with the mlt charging

regime, by actively extending the PCS’s MPPT,

while it has already achieved full output

When DC:AC ratio is more than 1.1, the internal

DSP controls will dynamically optimize the ESS

voltage to maintain the inverter at maximum

output while also charging the batteries with

the excess energy from the Solar PV panels,

creating greater cash flow for our customers


Layout of 20” container Narada active container

Heat sensor

Smoke sensor

CO2 sensor FSS

Gen.

Buzzer

Latch for exhaust

Visual indicator

900Vdc Rail

900Vdc-24Vdc

Walkaway, cable trays, lighting, heating and built-in lift for module services

Support system

800Vdc; 75A

5 isolated outputs: Each 800Vdc, 375A with dual pole and disconnect switches


DC configuration plan Narada active container

Sub-system Rack Module Container

-- 900V, 15A

-- 12.8kW

-- 10.24kWh

-- 900V, 1650A

-- 1,400kW

-- 1,126kWh

-- 900V, 370A

-- 320kW

-- 256kWh

-- 900V, 75A

-- 64kW

-- 51.2kWh


DC configuration plan Narada active container

DC solution container

• Charge & discharge: 1C charge and 1C discharge capability up to 60°C ambient

• Certification: CE, cUL, EN approvals

• Compactness: 19”rack, 0.6m depth modules fitted into a 20 feet container

• High energy density: 900Vdc, 15A, 12.8kW, 10.24kWh modules up to 1.4MW, 1.12MWh

The inner layout of DC solution container


Racks diagram Narada active container

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

800Vdc 15A

M1 M2 M3 M4 M5 M1 M2 M3 M4 M5

F1,F2 1000Vdc, 80A

F9,F10 1000Vdc, 80A

To HV common bus

Rack W. 5 modules

Rack W. 5 modules

• The modules are adjustable from 750Vdc to 900Vdc for system optimization

• Each rack is 900Vdc, 75A maximum, (64kW/ 51.2kWh) with 5 modules fitted

• The M1000 communicates via protocol of both CAN-open and Ethernet

• Every M1000 controller manages a maximum 5 racks or 25 modules

CAN-open Com. to each module Ethernet Com. to monitoring


Configuration example Narada active container

800Vdc 1500A 800Vdc 1500A 800Vdc 2700A

800Vdc 1500A 800Vdc 1500A 800Vdc 2700A

11’w

. 2

nd S

kin

23’w. 2nd Skin

16.76m

9.2

0m

3ΦAC-480V

3ΦAC-480V

2*(800V,3000A cabling) 4.8MW/ 3.85MWh solution

•Remark: Each LFP container weights max. 22.5T; appropriate grounding and footing for each

container should be approved by Narada (footing in 6 locations: 4 at conners+2 in middle)

• Configuration: 4*LFP containers (1.2MWh/ 962kWh); 2*PCS (2.25MW,800V);

2*cabling (1000V,300A); 2*Pad mount transformers (2.25MVA, 13.2KV/ 480V)


Position Color LED Condition

Upper Green System OK

Middle Amber Minor alarm

Lower Red Critical alarm

The controller of Racks Narada active container

Alarm indication on front panel

Every module (module 1 to 5) within the rack will report its own status, warnings and alarms. Most of them are

repeated here as the M1000 will handle and store those status summaries, warning and alarms on top of

controlling the performance of each module. Beyond its control, monitoring and storage (max. 30 days)

function, it also communicates all the parameters from cell, module and rack info to the ExiNMS manager.


Container line diagram Narada active container

× 4 sets

S1: 1000Vdc, 600A

Container input & output

S4: 1000Vdc, 600A


S5: 1000Vdc, 200A


Communication Hub

Fire suppression system

Temperature control system

Central controlling system

Lighting system


System efficiency Narada active container

99.00

98.00

97.00

96.00

95.00

94.00

93.00

0.00 20.00 40.00 60.00 80.00 100.00 120.00

Eff

icie

ncy

(%

)

Output power (%)

800V DC

900V DC

1000V DC

• The efficiency of MV transformer (480V/ 13.8kV) is 99.48%

• The efficiency of cabling between PCS & transformer (480V) is 99.82%

• The efficiency of PCS (250kW) is 95.2%~97.79%, depends on output power

• Note: the efficiency for the same power varies at different voltages!


Container efficiency Narada active container

Cable,

switch

PCS Transformer

Cable,

switch

Cable,

switch

PCS Transformer

Cable,

switch

> Container loss=79.6kwh Cable, switch loss=9.0kwh

> Container loss=78.9kwh Cable, switch loss=8.3kwh

Charging process

• Charging losses: - Battery losses=80.60kWh - Aux. System=1.87kWh - Total losses=90.47kWh

• Test conditions: - @25oC, 3760A, 800Vdc - Charge power 3007kWh - Charging time: 70mins

Discharging process

• Discharging losses: - Battery losses=87.24kWh - Aux. System=1.50kWh - Total losses=88.74kWh

• Test conditions: - @25oC, 3760A, 800Vdc - Discharge power 2827kWh - Charging time: 56mins Turn-around losses: 179.21kWh


Data communication Narada auxiliary system

• Narada Client Servers are deigned to handle up to 10,000 nodes/ modules each and are able to store full site

information for 10 years+, which are meant to be operated in either core or client mode and fully redundant

• Client servers: 1&2/ 3&4 will back-up each other and communicate to the PCS control center A&B respectively

through Ethernet or any other public or private protocol.

• Core servers: A&B are expected to communicate with customer’s Network Operating Center(NOC)

Client Server Client Server

Client Server Client Server

PCS controls

Core Server

PCS controls

Core Server

Customer NOC

Typical 5MWh data communication & storage network

1

3

2

4


Thermal management Narada auxiliary system

Note: Container must be 1m above ground level to eliminate snow or water

blockage of intake and exhaust area, plus debris from blocking the entry ways.

Support system

800Vdc; 75A Hot corridor

Cold corridor

Hot corridor


Controller of the system Narada auxiliary system

Reactive Voltage control

For setting configuration of every single

cell, module, rack and power supply:

• Voltage, current, temperature, SoC, SoH,

cycle numbers, mode of operation, alarms

• Tracks assets, events, energy in/out, run

time, calibration, maintenance, warnings

• Maintains security, warning and alarm logs,

revisions, configuration, history of warranty

M1000 controller


The rack design builds on the resilience of

the modules. Each rack can contain up to 5

modules connected in parallel and fused to

the 900V high voltage bus bar.

The drawing at left side shows 4 modules

in the rack. Most of the racks in the

solution will have 4modules, but 25% will

also be populated with a 5th module. The

height of the 5 module rack is 2.54

Rack Design & Perforce

Fire suppression system Narada auxiliary system

Discharge of the fire suppression system

Large-scale projects


Xuzhou city, Jiangsu province, China

Industrial storage for GCL-silicon

Project highlights

The first commercialized storage project for enterprises,

which shows economical efficiency of narada batteries

• Storage power: 1.5MWp

• Storage capacity: 12MWp

• Battery type: REXC-1000

• Battery quantity: 6300pcs

• Project date: 2016.09

Stored Energy Solutions for a Demanding World! More references




Zhenjiang city, Jiangsu province, China

Industrial storage for Acetech

Project highlights

The 2nd commercialized storage project for enterprises,

also shows economical efficiency of narada batteries

• Storage power: 750KWp

• Storage capacity: 8MWp





Katwaria Sarai, New Delhi, India

Energy storage project for Grid India




Project highlights

The first oversea project of energy storage, which consists

of both Narada lead-carbon battery and lithium battery

• Storage capacity: 1MWh

• Pb-C batteries: 500KWh

• Li-ion batteries: 500KWh

• Function: Frequency modulation



Katwaria Sarai, New Delhi, India

Energy storage project for Grid India


Changping district, Beijing, China

CNR micro-grid demonstration

Project highlights

Two operational modes: On-grid and islanding power to

shift peak load and realize the central energy management

• PV generation: 275KWp






Changping district, Beijing, China

CNR micro-grid demonstration


Olympic park, Beijing, China

Hanergy FE power station

Project highlights

It generates 70KWh power per day to satisfy electricity demand

for 400 people, that can be installed in half hour by 4 persons

• PV generation: 19.2KWp

• Storage capacity: 144KWh





Olympic park, Beijing, China

Hanergy FE power station


Project highlights

• Wind generation: 100KWp

• Storage capacity: 270KWh




Ulanqab city, Inner Mongolia, China

Wind power station in prairie

The biggest wind power station in Asia, partially

equipped with storage system to smooth the power


Ulanqab city, Inner Mongolia, China

Wind power station in prairie


Lin'an city, Zhejiang province, China

Narada hybrid storage

Project highlights

The original hybrid storage system with both VRLA and

LFP batteries, controlled by integrated heat management

• PV generation: 57KWp


• Pb-C batteries: 1.5MWh

• LFP batteries: 400KWh



Lin'an city, Zhejiang province, China

Narada hybride storage

Thanks!

narada bess presentation

Engineering