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Key Outcomes:  

  • The supply of quality, pollution free voltage to the site
  • Energy reductions by more than 10%
  • Greatly improved site equipment performance with zero electromechanical stoppings

Business Problem

With continual equipment problems and interruptions to supply, the management at Alkoomi Wines investigated the root causes of the problems that they were experiencing on a daily basis with the supply of power to their southern Western Australian wine producing site. The project began with detailed analysis carried out at the point that the electrical energy enters the business at the main switchboard. A detailed analysis of the nature of the site’s equipment and the way it consumes power on site was also conducted. Together with these analyses, a detailed analysis of the previous year’s energy accounts was completed, resulting in a triangulation analysis of all the collected data.

The analysis revealed substantial fluctuations in the incoming power which was resulting in tremendous inefficiencies with equipment on-site. The analysis also revealed other events on-site, such as equipment turning on and off, resulting in energy reverberations and inrush currents. The site was further complicated by the addition of on-site solar energy generation through solar PV. While this is a recognised and widely accepted business activity it is important to understand how solar PV on-site interacts with grid supplied electrical power. The analysis revealed how the on-site solar PV was logically increasing the voltage on-site particularly during periods where the local region reduced its energy draw.

SCE's Solution

The solution for the site was an independent phase voltage stabilisation technology that would re-render the site voltage for each phase. The outcome would be:
 

  1. Stabilisation of the incoming voltage
  2. Harmonisation between the grid supply voltage and solar PV voltage created on-site
  3. Improved site power factor
  4. A reduction in total harmonic distortion (THD)
  5. Addressing the on-site ‘unbalance’ in both voltage and current

 
A 400amp independent phase voltage stabilisation unit was installed at the winery site in Western Australia. The unit was supplied by SCE Energy Solutions after a detailed analysis and site audits were conducted.
 
The result was that the voltage supply at the point of entry to the business, at the main switchboard, was now held to a tight pre-set parameter of 225 V plus or minus 1.5 V. The voltage held to this tight range would be maintained regardless of the different current draw on each individual phase, therefore eliminating the impact of inrush currents at equipment start-ups.
Figure 1 below is a graph of the post installation data that was taken during and after harvest, which shows a relatively low current draw and a flat voltage supply (blue line) that is independent of equipment activity. The significance of this is that equipment will perform much more reliably over a long period of time, therefore extending the life of delicate production equipment and significantly reducing electromechanical maintenance issues associated with large production equipment on the site. The outcome for the business is greater business efficiency through improved energy quality.
 
SCE-Voltage-Graph.png
(Blue line on top shows stable 225v)
 
“Since the installation the lights have stopped blowing and our production equipment doesn't miss a beat. SCE have been and continue to be incredibly reliable and constructive in identifying key issues regarding ongoing energy efficincies that will continue on well into the future”Rod Hallett – Owner Alkoomi Wines
 

Alkoomi-Wines-Voltage-Banner-(1).jpg

 

 

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