Technical Proposal of Hybrid Dual Power Solution

Technical Proposal for Hybrid Dual Power System Solution

2023-4-17

Huawei Technologies Co., Ltd.


Contents

1 Overview.........................................................................................51.1 Background......................................................................................................................................................5

1.2 Key Benefits.....................................................................................................................................................5

1.3 Solution Introduction.......................................................................................................................................6

1.3.1 Working Principles of Outdoor Scenario............................................................................................6

1.3.2 Principle of battery Charging................................................................................................................8

1.3.3 Monitor and Management.....................................................................................................................9

2 Components of Dual Power Hybrid Solution............................................112.1 Power system................................................................................................................................................11

2.1.1 Specification：.....................................................................................................................................12

2.2 ACB Cycle Battery........................................................................................................................................13

2.3 ACB Cabinet..................................................................................................................................................14

2.3.1 Appearance...........................................................................................................................................15

2.3.2 Parameters...........................................................................................................................................15

3 BOQ.............................................................................................16

2023-4-17 Huawei Confidential No spreading without permission of 16

Technical Proposal for Hybrid Dual Power System Solution For PTCL Pakistan

Figures

Figure 1-1 Components of Hybrid Dual Power Solution for Outdoor Scenario..........................................6

Figure 1-2 Power supply process of AC supply.............................................................................................7

Figure 1-3 Power supply process of battery supply........................................................................................8

Figure 1-4 Charge Curve after 100% DOD discharge................................................................................9

Figure 2-1 Appearance of the power system.................................................................................................12

Figure 2-2 shows the appearance of ACB battery........................................................................................14

Figure 2-3 Appearance of the Integrated Cabinet.........................................................................................15



Tables

Table 2-1 Technical parameters of the rectifier..............................................................................................12

Table 2-2 Technical parameters of the ACB battery......................................................................................14

Table 2-3 Technical Parameters of the Battery Cabinet.......................................................................................15

Table 3-1 BOQ For PTML..................................................................................................................................16



1 Overview

1.1 BackgroundThe commercial power supply is short in Pakistan. There is 4-12 hours CP shortage everyday for different area and different seasons. At the same time, Pakistan is one of the top hot regions in the world, which leads to high pressure to the battery which doesn’t have good cooling system.

As the world leading vendor, Huawei provides the Hybrid Dual Power System for the high compared high power consumption sites. With the help of fast charging battery (ACB) and Air-Conditioner cabinet, the Hybrid Dual Power system will save the OPEX with a big scale.

.

1.2 Key BenefitsCompared with the traditional solution, the Hybrid Dual Power Solution has some advantages as follows:

Fast Charge; it can full charge the battery in less than 2.5 Hours in 85% DOD; The charge current can get to 0.4C; High charge acceptance to ensure rapid and complete recharge;

Long Cycle Life: cycle life up to 3500 times @ 85% DOD, 35 ;℃

Fast deployment: easy to install because it is smaller adopts a modular design and integrates storage batteries,

Intelligent management: Monitors the ACB batteries and PSU modules, keep the ACB in a high charge acceptance and high reliability; the system provide SMS function and reports alarms over dry contacts;

Level-B surge protection: Standard surge discharge current: ±30 kA, 8/20 µs

Maximum surge discharge current: ±60 kA, 8/20 µs

High Heat Dissipation Capability: can get to 1600W

Long back up time; ACB can power the load for 6 Hours when the mains lasts more than 2 hours;(if the mains lasts time less than 2 hours, the backup time will be reduced). if you want to add the reliability, we advise you to add the back



battery; it will go on power the load when the ACB’s DOD get 85%; ( we suggest the capacity of the back battery can power the load for more than 3 Hours)

1.3 Solution IntroductionHybrid Dual Power Solution construction diagram is showed in figure1-1 .The system is composed of Power System (manage the battery), ACB (Advance Cycle battery)

Figure 1-1 Components of Hybrid Dual Power Solution for Outdoor Scenario

1.3.1 Working Principles of Outdoor ScenarioThe commercial power is the preferential source for supplying the main equipment. When the commercial power is available, it will both power the equipment and charge the battery.



Figure 1-1 Power supply process of AC supply

When the commercial power is faulty, the battery will supply for the load.



Figure 1-2 Power supply process of battery supply

When the mains recover, the mains will power the BTS and charge the battery.

1.3.2 Principle of battery ChargingIn the Hybrid Dual Power Solution, the battery charge current can be 0.4C and less than 190A. This control logic ensures that current keep in this condition; when the battery is full or the battery temperature is high enough, the current will be adjust to have a long lifespan.



Figure 1-1 Charge Curve after 100% DOD discharge

1.3.3 Monitor and ManagementBasic Function:

Hybrid Dual Power Solution implements system monitor through dry contacts, and then reports the RBS.

The alarms list as follows:

AC Power failure alarm

DC under-voltage alarm

Power system failure alarm

SPD failure alarm

Fuse burn-out alarm

Battery High Temp alarm

DC A/C Alarm

Heat Exchanger Alarm

Additional Function:

Hybrid Dual Power Solution implements system provides the SMS function

The alarms list as follows:



Mains fail alarm

Lose phase alarm

Mains over voltage alarm

Mains lower voltage alarm

Battery over voltage

Battery lower voltage

High battery temperature

Low battery temperature

Bat discharge over current Protection

Air-conditioner fault

CPMU01 Communication fail



2 Components of Dual Power Hybrid Solution

2.1 Power systemThe power system can provide DC power up to 17KW. The system contains a rectifier shelf for up to 6 rectifiers EPW50-48A/B-HE and distribution units with elements for DC-distribution, BLVD, LLVD and a power system controller. Figure 2-1 shows the appearance of Power System.

Special designed rectifier for ACB which can prolong the life of ACB

The battery charge current is automatically adjusted according to t battery state, the battery temperature can be controlled and prolong the life for batter



Figure 2-1 Appearance of the power system

2.1.1 Specification：

Table 2-1 Technical parameters of the rectifier

Parameter category

Parameter Description

AC input AC input system 3-phase 5-wire systemRated input phase voltage

220V



Input voltage range

90Vac ~ 290Vac;input voltage of 176Vac ~ 290Vac:Full load output 2900W ;input voltage of 90Vac ~ 175Vac:Half load output 1400W ;

Input AC voltage frequency

45Hz ~ 65Hz

Max input current ≤ 35A (at 176V input)

Power factor ≥ 0.99

DC output

Output DC voltage 43.2Vdc ~ 57.6Vdc

Output DC current 0A ~ 300AVoltage set-point accuracy

≤ 1%

PSU Efficiency ≥ 96%

Noise (peak-peak) ≤ 200mV (0～20MHz)

Weighted noise ≤ 2mV (300～3400Hz)

Wide frequency noise≤ 100mV (3.4kHz ~ 150kHz)

30mV (150 kHz ~ 30MHz)

Discrete noise

≤ 5mV (3.4 kHz ~ 150kHz)

≤ 3mV (150 kHz ~ 200kHz)

≤ 2mV (200 kHz ~ 500kHz)

≤ 1mV (0.5 MHz ~ 30MHz)

LLVD

80A*2;63A*2;32A*2;20A*2

BLVD63A*2;32A*2;16A*3;

Environment

Operating temperature -20~40℃

Storage temperature -40~70℃

Relative humidity 5～95％RH

Altitude：0~4800;when it surpass 3000m,the maximum temperature will decline 1 each ℃200m

Acoustic noise: 55dB

Construction Cabinet DimensionH x W x D :1825 mm x 700 mm x 700 mm

2.2 ACB Cycle BatteryThe ACB serves as the active storage battery in the Hybrid Dual Power Solution. ACBs are used as active storage batteries in the Hybrid Dual Power Solution.



ACBs are made of a new type of materials and feature long service life, small size, light weight, good performance at high temperatures, and safety. They can be charged or discharged with a large amount of power and do not pollute the environment.

The Hybrid Dual Power Solution uses 48 V, 50 Ah ACBs.

Figure 2-1 shows the appearance of ACB battery

Table 2-1 Technical parameters of the ACB battery

Items ACB-50Ah

Normal Voltage 48V

Capacity 50Ah @ 5hr to 32V @ 25℃

Dimension（L*W*H)/cell4*(106*125*420)mm

weight/cell 4*10Kg

Maximum Charging Current Limited

1C

Operating Temperature Range

Discharge: -20℃～55℃Charge: 0℃～55℃

Recommended Operating Temperature 25℃～35℃

2.3 ACB CabinetThe advantages of battery cabinet are as follow:

Modular design, parts and components highly unified, good flexible cabinet expansion

Assembled in site and whole mounting transportation are available; Flexible utilization, widely applicable, such as green-field site, mountain site, rooftop site.



The DC air-conditioner cooling for battery.

The anti thief rack prevent battery from stealing

2.3.1 AppearanceFigure 2-1 shows the appearance of the integrated cabinet.

Figure 2-1 Appearance of the Integrated Cabinet

2.3.2 Parameters

Table 2-1 Technical Parameters of the Battery Cabinet

Items Parameters

Cooling unit DC Air-conditioner

Rating supply voltage 48V

Rated input power 500W(L35/L25)

Cooling Capacity 1000W(L35/L25)

Working ambient

temperature-5 ℃ ～ +55℃



Battery Capacity Maximum: 400Ah/48V(one cabinet)

Dimension (L*D*H) 650mm*640mm*1800mm

Weight 150 kg

Color Grey white

Operation relative

humidity5％～100％RH

Maximum wind speed 160km/h

3 BOQ

Table 3-1 BOQ For PTML

NO Item Description QTY Remark

1 Power system

Power System Cabinet Mixed Power,HPS48300A-HX04,three phases five wires (220V/380V) one mains input,bottom cabling,700mm*700mm*1825mm(W*D*H),heat exchanging type,150W/K,without battery cube inside ,special for Power1000

1

PSU Power Module 50A/48V 42 ACB Advance Cycle Battery

50AH Energy Storage Unit,Advanced Cycle Battery,48V,50Ah,battery group(12Vcell),4*(106*125*420)mm,Agisson ACB-50A

5

3 Battery Cabinet Integrated CabinetBattery Cabinet Mixed Power,ESC-1A,-48VDC,down

outlet,650mm(W)*640mm(D)*1800mm(H)-None DTS,Adding SPU

1

4 Installation material Installation material

Installation material Installation material 1


Technical Proposal of Hybrid Dual Power Solution

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