OFF GRID HYBRID POWER SYSTEMRobust and scalable hybrid energy solution for remote locations

Today, many organizations are utilising hybrid or renewable energy to reduce operating costs and expand market coverage. In remote areas, generators are typically used to provide extra charge to the batteries when sun and wind are not available, particularly during the early hours of the morning. However, if the site has a 24-hour generator site with no mains power, the costs of running the site can be high considering fuel and transportation costs (typically around 500 hours between services).

Using a hybrid solution can significantly reduce generator run times. For example, on a typical mobile site with a 3kW load with good solar (12kW) and wind energy (2Kw), generator runtimes can be reduced to about 4 - 6 hours a day. This allows organizations to reduce fuel, transportation costs and have longer service intervals. With these two factors, it means longer life for the generator before replacement.

Time on Battery / Solar / Wind

Time on Generator

24%

76%

HYBRID POWER SYSTEM AT A GLANCEThere is no one-size-fits-all solution to harness hybrid or renewable energy. Vertiv’s team of solutions experts listens to our partner’s unique needs and engineers the solution that achieves the capital/operational balance desired. Vertiv’s hybrid energy solutions can help you rapidly deploy sites and achieve your operational goals.

Solar Panel

ZBM Batteries

Bunded Plinth

18KW Rectifier System(R48-200e3)

and NCU Controller

Optional Parts

Internal SPD’s for Solarand Wind input

Solar / Wind converter system Siteweb and Bravo

Inverter System

Wind Turbine

The Off Grid Hybrid Power System provides backup power requirements to the remote site equipment. It monitors the state of the batteries and automatically controls the generator operation.

Designed to meet harsh environments, the Off Grid Hybrid Power System serves as the nerve centre of the system. Essential design requirements met by the Hybrid Power System are:

yy Fully tested and integrated system at the factory before arriving at the site

yy Reliable and cost effective

yy Fully maintainable without requiring or causing any interruption to the connected load

yyModular replacement components for solar and wind converters and all power conversion equipment

yy Front access for all replaceable modular parts

yy Efficient space utilisation

yy Provides protection/distribution for -48 volt DC customer loads

yy Provides protection/distribution for 230 volt AC customer loads

yy Positive earth, -48 Volt primary system voltage

yy Robust, with ambient operating temperature range from -15 °C to +45 °C

yy Deliver up to 12kW of solar power and 4kW of wind power

yy Deliver up to 18kW of Rectifier power for load and battery recharge

yy Expandable battery 40kWhr compartment to increase storage from 40kWhrs to 80kWhrs to 120kWhrs

FEATURES AND BENEFITS

Front Back

Netsure 531 A91 DC Power System

The NetSure531 series embedded high-efficiency switch mode power system has been installed in the HPS equipment enclosure. The A91 system can accommodate (9) R48200e3 rectifiers or (9) S48200e3 MPPT converters and is also equipped with an advance network controller (NCU) and associated CB’s. Two Netsure 531 A91 chassis are installed in the HPS enclosure. One chassis houses the rectifiers and the other for the solar and wind converters.

yy The 2000W high-efficiency eSure™ solar MPPT converter (model S48-2000e3) is designed to convert solar DC supply voltages into nominal -48V DC voltage

yy Adjustable to application needs

yy Constant power converter designed

yy DSP (Digital Signaling Processor) functionality for efficient operation

yy Input voltage range is 120 to 420 VDC with a wide operational temperature range from -40°C to +80°C

yy Converter is hot pluggable with efficiency above 96.2%

yy 2000W high-efficiency eSure™ rectifier (model R48-2000e3) is designed to convert standard AC supply voltages into stable nominal -48 V DC voltage

yy Adjustable to application needs

yy Constant power rectifier designed

yy DSP (Digital Signaling Processor) functionality for efficient operation

yy Input voltage range is 85 to 300 VAC with a wide operational temperature range from -40°C to +80°C

yy Rectifier is hot pluggable with efficiency above 96.2%

yy NCU advanced control unit is a hot pluggable unit optimised for use in both embedded and stand-alone applications

yy Remote monitoring, configuration, status information and basic control of the site’s overall function, voltages, currents, temperatures and related alarms

yy Information and alarms from the site are monitored by means of a web browser via monitoring software (Site Web)

yyWhen using a web browser no additional software is required

yy NCU is connected to the hybrid systems HUB to allow remote control, monitoring and configuration

INSIDE THE HYBRID POWER SYSTEM

Site Web IDU Control and Monitoring

yy Acts as a protocol converter between the remote Site Web server and the generator controller

yy Connectivity is provided via ethernet port (RJ-45) and TCP/IP

yy Data acquisition of battery voltage, solar, wind charge currents and generator runtimes, as well as sensing of digital input signals is also performed within the unit

yy Software upgrades and system configuration may be performed remotely

yy Telnet connection to issue system commands to the Linux operating system incorporated into the IDU

Site Web Software

yy Software written specifically for the hybrid system

yy Controls the operation of the generator when the battery state of charge falls to a predetermined level

yyMonitors battery voltage and initiates generator start and stop commands to the generator controller

yy IDU sends a stop command to the generator controller

yy Site dashboard provides visual information of performance

PE terminal

Power input port

Relay port

Dl port

Al ports

Total batterystring voltage port

Serial ports

Waterlogging port

Camera port

Modem port

Console port

TH/T port

E1 port

Micro SD card slot

Ethernet port

Zinc Bromine Batteries

yy 5kW power, 10kWhrs per ZBM battery

yy No need for end of life battery recycling resulting in less cost on disposal fees and service fees to replace batteries

yy Ambient operating temperature range 5 to 45 °C (shut down at 50°C)

yy Ease of transport and handling as the electrolyte is filled at site

yy Indefinite shelf life in the warehouse, no trickle charge required, not affected by heat

yy Less floor loading than VLRA’s (90 kg without electrolyte, 225 kg with electrolyte)

yy Battery theft is reduced due to uncommon VRLA’s (valve-regulated lead-acid battery)

yy Built in battery management software to indicate life of battery, sends out alarm signal when stack replacement is required

yy Long life DC pumps

yy String ZBM’s are interchangeable – higher internal resistance and flow battery characteristics mean that one ZBM can be swapped in a string of ZBMs regardless of ZBM age without adverse effects on other ZBMs in the string

yy 100% discharge capabilities as a normal operation

yy Each battery has it own intelligent battery manager connected to the Vertiv NCU (controller)

Wind Turbine Type Horizontal axis, Up-wind

Rotor Diameter 1800 mm

Mass 20 kg (44.1 lbs.)

Tower Diameter 48.6 mm (1-15/16")

Number of Blades 3

Blade Construction Carbon fiber laminate over solid foam core

Blade Mass (per piece) 380 g (13 oz)

Blade Method Interlock hub mounting

Body Material Aluminum diecast

Body Construction Block puzzle structure

Product Finish Powder coating

Generator Three-phase power generator with permanent neodymium iron boronmagnet

Control Systems yy Power Assist Systemyy Maximum Output Managementyy RPM Controlyy Safety Controlyy Data Communication

Protection Circuit Built-in

Yaw Control Free yaw (360 degrees)

Direction Control Original Swing-Rudder System

Cut-in Wind Speed 2.5 m/s

Rated Power 609W (Wind Speed: 11m/s) *1

DC Output of Wind Turbine 1.1kW (Wind Speed: 12.5m/s), 742W (Wind Speed: 11m/s)

Annual Energy Production 800kWh (Annual Mean Wind Speed: 5m/s) *1

Maximum Rotor Speed 1,280 rpm

Rated Output Voltage DC260V

Communication System (Signal Output) RS-485

Battery Capacity Recommendation -

Wind Turbine Class IEC 61400-2 Ed2 Class II

Annual Mean Wind Speed (m/s) 3 4 5 6 7 8

Annual Energy Production (kWh) - 345 800 1,329 1,818 2,196

1KW JAPANESE MANUFACTURED WIND TURBINE

Electrical Characteristics

Maximum Power at STC (Pmax) 255 W 250 W

Optimum Operating Voltage (Vmp) 30.8 V 30.7 V

Optimum Operating Current (Imp) 8.28 A 8.15 A

Open Circuit Voltage (Voc) 37.6 V 37.4 V

Short Circuit Current (Isc) 8.76 A 8.63 A

Module Efficiency 15.7% 15.4%

Operating Module Temperature -40 °C to +85 °C

Maximum System Voltage 1000 V DC (IEC)

Maximum Series Fuse Rating 20 A

Power Tolerance 0/+5%

STC: Irradiance 1000 W/m², module temperature 25°C, AM=1.5Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%

Maximum Power at NOCT (Pmax) 188 W 185 W

Optimum Operating Voltage (Vmp) 28.1 V 28.0 V

Optimum Operating Current (Imp) 6.68 A 6.59 A

Open Circuit Voltage (Voc) 34.7 V 34.5 V

Short Circuit Current (Isc) 7.12 A 7.01 A

STC: Irradiance 1000 W/m², module temperature 25°C, AM=1.5Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%

SOLAR ARRAY

ENSURE POWER CONTINUITY

During power outage even in remote locations with generator sets and diesel tanks tailored according to your requirement. Generator sets for the Off Grid Hybrid Power System can be managed and monitored remotely through the SiteWeb monitoring system.

Off Grid Hybrid Power System is designed carefully focusing on providing a customised solution for customers that is robust, flexible, scalable and addresses a host of operational issues that arise in remote locations

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