S-Power improves reduced output and power output of degraded and underdeveloped solar power plants through its renovation projects.
Starting with four Woori Blue Solar Power Plants built in 2012, the renovation project entered into full swing in 2014. After the renovation, the average annual PR of the Woori Blue Solar Power Plants increased by 13%, and our self-developed tracker was installed at S-Plant #4; thus increasing the PR by 32% and remodeling the place as a power plant capable of producing high output.
Renovation of Woori Blue Solar Power Plants
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Before action
As existing power plants were affected by yellowed modules,
we took action due to concerns over long-term loss of output.
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After action
Replacement of our modules and maintenance work
were carried out.
| Region | Goheung-gun, Jeollanam-do (4 locations) |
|---|---|
| Capacity | 1,853.9kw |
| Construction period | August 1 - 30, 2012 (All) |
| Power plant acquisition | Sep. 1, 2012 |
| Module replacement | SM-235PC9(1,026ea) / SM-240PC9(6720ea) |
Renovation of S-Plant #4
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Before action
Due to decreased module output at the existing plant,
action was taken.
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After action
Implemented renovation work
with our own modules and trackers
| Region | Sayul-ri, Namwon-si, Jeollabuk-do |
|---|---|
| Capacity | 985.76kw |
| Construction period | November 12 - December 31, 2014 (All) |
| Power plant acquisition | Sep. 22, 2014 |
| Module replacement | SM-305PG8 (3,232ea) |
Renovation of Dabok Solar Power
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Before action
Since output was reduced due to an issue with the plant tracker,
action was taken.
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After action
Replacement of tracker system
and connector board
| Region | Jaesan-myeon, Bonghwa-gun, Gyeongsangbuk-do |
|---|---|
| Capacity | 995.5kw |
| Construction period | February 15 - March 15, 2017 |
| Power plant acquisition | Dec. 23, 2016 |
| Replacement parts | Tracker Controller |
| Target | Before improvement | After improvement |
|---|---|---|
| Fire in connector boards |  |
 |
| Estimated cause | A fire is estimated to have been started in the connector board due to damage caused to cable connector or blocking die | |
| Actions | Installation completed after the production of new connector boards (took 2 days to handle) | |
| Module diagnosis |  |
 |
| Estimated cause | Double-checked with IR camera and EL camera to diagnose defective modules. It is similar to the PID phenomenon caused by dark cells, leading to output loss. | |
| Actions | Restored output by installing PID recovery and anti-PID box (kit) | |
| Replaced aged equipment (inverter and transformer) |  |
 |
| Estimated cause | In the case of aged inverters, it was impossible to repair failures as service responses and parts supply were unavailable. | |
| Actions | Replaced distribution devices and inverters (ACB panel and transformer) | |
| Remodeling |  |
 |
| Estimated cause | The installation of thin-film solar cell modules reduced energy output, and the plant had been left unattended due to the closure of the manufacturer. | |
| Actions | Remodeling to polycrystalline solar cell module was carried out by applying the tracker system, resulting in a 32% increase in PR | |