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Power factor (again)

Johno12345

Sorry for yet another question on this topic.

 

I have got sub metering installed on all outgoing submains, I also have a meter on the incoming main

 

Between the main meter and sub meters, I have my power factor correction

 

over a week, I'm getting about 1,500kWh of difference, the sub meters total being higher by that amount compared to the incomer meter.

 

I'd like to say that the power factor correction has effectively saved that number of kWh, is that correct?

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    Johno12345: 
     

    the meters arent MID standard, so it could be metering errors, id have hoped they were a little more accurate than that though.

     

    They do record power factor and you can view KVA on the meter, but we are using kWh because its all to do with our energy monitoring, carbon footprint etc, we have got to keep things fairly simple if we have any chance of consistency.

    There may be CT errors too.  I doubt that these will have been tested together or calibrated.  These errors can soon add up and when you are talking about the difference between two large numbers they can appear considerable.

    If you have power factor correction at the incomer it wont affect current and losses down stream of it.  It should reduce losses upstream.

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  • 0

    Johno12345: 
     

    the meters arent MID standard, so it could be metering errors, id have hoped they were a little more accurate than that though.

     

    They do record power factor and you can view KVA on the meter, but we are using kWh because its all to do with our energy monitoring, carbon footprint etc, we have got to keep things fairly simple if we have any chance of consistency.

    There may be CT errors too.  I doubt that these will have been tested together or calibrated.  These errors can soon add up and when you are talking about the difference between two large numbers they can appear considerable.

    If you have power factor correction at the incomer it wont affect current and losses down stream of it.  It should reduce losses upstream.

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