Home › Electrical Engineering Forum › General Discussion › Create a simple on-line calculator to evaluate cost savings obtained with Power Factor correction › Re: Create a simple on-line calculator to evaluate cost savings obtained with Power Factor correction
We have now chosen a name for this project: PowerFacAging calculator.
To keep you posted with this project, below is a first idea of the typical result which we want the tool to provide:
* a clear view of the yearly cost savings obtained when installing PFC
* an estimation of investment cost and payback time (not yet implemented here)
* and also an idea of how these cost savings will evolve during installation time
==> please tell us what you think about it
In order to evaluate the PFC savings (how much I should replace them? how do I detect when I shall do it?),
I need to understand well the impact of age on performance of capacitors and also a proper selection of the automatic power control system of the Capacitor bank, if it`s going to have fixed and step modules.
Capacitor`s age of seven to ten years, counted since manufacture date or installation is a good estimation?
The other relevant aspect is related to the voltage and KVAR of capacitors: I knew changes in dimensions, distribution of elements and level of protection in case of failure, in less than 7 years. I have had to replace units because are no longer available, for other ones from different manufacturers.
The last comment is related to the performance of load connected in parallel to these PFC units:
Without PFC connected to the network, the voltage drop and current increase will be registered inmediately in comparison with the PFC on. This factor will be considered also for calculation of savings.
I really appreciate if I can share the previously announced calculation tools to daniel.diaz_AT_emerson_DOT_com