Providing a suitable solar power systems is not as simple as a solar panel, regulator, and battery.
Solar power systems require a comprehensive level of design to enable that the system provides not only
for the immediate needs of a site, but also for the site needs when solar power generation is not available,
such as at night and during times when solar generation is low. Pacom utilises solar power on many of our
remote repeater stations and has developed a set of design tools suited to solar power use in PNG. These
tools allow Pacom to provide a solar power system designed to meet your needs be they a simple radio
unit to a comprehensive solar power solution to a small community providing both AC and DC power.
Site specific insolation data is used where the location of the solar system is known. For unknown sites
general insolation data is used. Below is an example of insolation data used for site analysis. Site
data available includes not only the average insolation but also the average distributuion of the insolation
per day as well as additional inclination, cloud and other relative data.
Example data
Insolation on horizontal surface (kWh/m2/day)
Kavieng
Lat -2.566
Lon 150.8 |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual Average |
| 10 Year Average |
5.34 |
5.25 |
5.53 |
5.43 |
5.19 |
4.90 |
5.00 |
5.51 |
5.94 |
5.68 |
5.32 |
4.80 |
5.32 |
|
Radiation on Equator-pointed tilted surface - Optimized Insolation
|
| Optimized |
5.69 |
5.35 |
5.48 |
5.65 |
5.89 |
5.80 |
5.79 |
5.94 |
5.97 |
5.73 |
5.60 |
5.14 |
5.67 |
|
Radiation on Equator-pointed tilted surface - Optimal Angle
|
| Opt Angle |
24.0 |
15.0 |
5.00 |
19.0 |
31.0 |
35.0 |
33.0 |
25.0 |
11.0 |
13.0 |
22.0 |
24.0 |
21.4 |
Example System Graphs
Pacom assess each solar system sizing based on either generic information relative to your system requirements
or specific information on your system usage. This information is then further assessed to provide weekly,
and if necessary monthly and yearly trends to ensure that the system is designed to provide the highest level
of performance possible. A slight positive trend is required to indicate that the system is sized correctly and matches
load with battery reserve and potential power generation.
