Independent Solar Power System Engineering Projects

Independent Solar Power System
1.Off-grid
2.Independent Solar Power System
3.Supply electricity for BTS
4.Succeed Case
About
Autonomous
Solar Power System
:
Autonomous solar system means that all the power for the BTS comes from the solar panels. In the daytime with sunlight, the solar panels will power the loads and charge the battery; when the sunlight is inadequate, night comes or on cloudy days, the battery will power the loads together with the solar panels or autonomously, until the next sunny day comes.

If the battery bank cannot stand to the next sunny day, then there will be a power failure when the battery reaches the maximum discharging capacity. When the BTS power is confirmed, we should take into consideration the number and chances of successive cloudy and rainy days, battery maximum powering time, how long does it need to fully charge the battery and so on.

Autonomous Solar Power System

Projects:

Name:
Hami 1643M BTS, Xinjiang Province
Installation Time:

June, 2009
Location:
Longitude 91°6~'96°23' E, altitude 40°52'~45°5' N;
Climate comditions:
Typical temperate continental arid climate, big temperature difference around the day, annual highest temperature 43.9°C, lowest-32°C;
Dry, windy and sandy;
Annual average sunlight hour 3200~3300 hours;
Annual irradiation 160~200 Kcal/cm2, irradiation power 211-264 W/m2;
PV installation—on ground, PV angle 45°.

System Configuration:

PV arrays—28000Wp;
One Xintong® XB200/600A MPPT cabinet integrated solar controller
One 48V4000Ah battery bank

System Performance:
Three-day successive power supply for devices below 3000w;
Battery fully charged through 3 successive days;.

System Application and Characteristics:
Solar power supplies with a capacity around 30000Wp apply to loads under 3000W, such as BTS and so on; the system also apply to meterological and geographical work, negative protection of oil pipes, as well as basic home lighting system for remote areas without electricity; the solar pumping system can meet the demand of drinking water, irrigation and landscape use.

The system parameters can be set on the spot, including float and bulk charging voltage, battery capacity, battery temperature compensating coefficient, battery protection voltage and so on. We also adopt multiple ways of installation: on the ground, on mounting racks of certain height or on the roof.

The system are equipped with many kinds of voltage output terminals: 12V, 24V, 48V, 60V and so on. Inverter can also be added to the system, providing AC output; the system also allows multiple energies insertion; the energy utilization order: solar-wind-battery; when the superior energy is inadequate, the next lever will automatically switch in, which prolongs the battery standby time; the working data can be reserved for 3 years.

System Main Data:

PV Power
28800WP
Inuput Voltage Range
0~160V
Output Voltage Range
43~60V controllable
Optimum Working Voltage
70V
Max Working Current
600A
Battery Bulk Charge Voltage
55.2V, adjustable
Battery Float Charge Voltage
55.2V, adjustable
Battery Temperature Compensation
1~5mV/cell/°C auto adjust
Battery Protection Voltage
42.5V±0.3%, adjustable
Recovery 48.5V±0.3%
Sampling Precision
≤±1%
Working Temperature
-40~75°C
Hymid
≤95%
Noise
≤45DB
Cooling
Wind cooling
MBTF
20000H
Protection Current
600A
Output Over- or Under-voltage
42.5V disconnection,
59.5V warning
Overheat Protection
75°C
Module Failure
Display alarm
Outer Dimension (controller module)
600×700×2000
Moduler Weight
203.9KG
Installation
indoor
Grounding
5Ω