Tank Street, Brisbane CBD
A Brisbane contractor was asked by their client to investigate ways to reduce the cost of their electricity expenditure. The building is a typical multi-storey commercial building on Tank Street which houses three government departments. The contractor teamed up with Fuseco and the results were impressive.
Tank Street, Brisbane CBD
A Brisbane contractor was asked by their client to investigate ways to reduce the cost of their electricity expenditure. The building is a typical multi-storey commercial building on Tank Street which houses three government departments. The contractor teamed up with Fuseco and the results were impressive.
The Challenge
The client and the tenants of the building wanted a professional investigation into possible technologies that may achieve a reduction in the increasing cost of electricity for the building. After reviewing the previous 12 months Energex NMI power usage data and assessing the electrical load, a recommendation was made to install a 300kVAr Sinexcel Static Var Generator (SVG) inverter-based power factor correction system. This would improve the average power factor from 0.83 to 0.99 and that savings in the region of $17k/annum should be achieved.
THE SOLUTION
The SVG was recommended instead of a traditional capacitor-based PFC system due to the SVG’s dynamic (< 15ms) assessment and correction on each phase, being immune to existing system harmonics and its ability to correct the building phase imbalances. The SVG also supplies infinitely variable reactive compensation current without using steps of capacitors connected via contactors.
THE OUTCOME
The unit was installed and commissioned in December 2017 and as can be seen from the screenshot, the SVG is now maintaining a power factor of 0.99, has lowered and balanced the grid currents by up to 80 amps. The customer is well on the way to achieving the projected savings.
- If your billing has changed to a kVA demand tariff and you have poor power factor, you are definitely paying for electricity that you are not using. In such cases, the SVG will reduce your electricity bills. Typically, most installations achieve savings of 10%-30%.
- No capacitor banks therefore no maintenance costs & performance issues associated with capacitors.
- Excellent power factor correction performance - Can maintain a PF of 0.99 lagging or unity if required.
- Dynamic Step-Less Compensation - Profiles the load and operates with a response speed of <15ms. No possibility of over or under compensation, will only inject the kVAr that is needed in that moment.
- Corrects load imbalance.
- Compensates both inductive and capacitive loads - corrects lagging and leading power factor.
- Can work with & enhance existing capacitor-bank based systems.
- Not affected by resonance.
- Can operate at low voltages.
- Excellent ROI (Return on Investment).
THE SINEXCEL SVG - BENEFITS
Simple PFC solutions incorporate banks of capacitors that work as silent reactive power ‘generators’. These systems were designed many decades ago when electrical environments were a lot simpler than they are today. They are common, very economical and suitable for linear load environments.
However, in today’s modern electrical environments, linear loads are not easy to find. Due to the proliferation of LED/energy efficient lighting, switch-mode power supplies, VSD’s, UPS’s, servers/computers and typical appliances, today’s electrical systems experience complex, dynamic non-linear loads. Loads are being switched so fast that the traditional capacitor bank PFC systems struggle to maintain an effective compensation set-point. Therefore, they are perpetually ‘chasing’ the load, either under or over-compensating but rarely providing effective compensation.
Fuseco offers the latest generation of advanced performance PFC solutions that offer instantaneous, dynamic step-less compensation, ideal for the challenging demands of modern electrical environments. The Sinexcel SVG solutions do not need a capacitor bank and offer many advantages due to their compact & modular configuration (including wall-mount options).
Applicable Industries
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From the moment the AHF and SVG units were turned on our power factor issues were a thing of the past. At both sites our PF is now 0.99 on all phases all the time, the units react instantaneously to our fluctuating load and power factor and the result has been an excellent return on investment.
Brad Kilner
OPERATIONS MANAGER AT KILNER'S ENGINEERING
The PFC units are now installed and running. They are doing a great job at maintaining a constant PF of 0.99 across all phases. Great product and excellent support from both of you. Very pleased doing business with you. Your help has been much appreciated.
Darren Brownscombe
ENGINEER AT TURBOSMART
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