Site Power

21Feb13
Monitoring the site power
    the plots
    plot description
    programs used for monitoring

Site power documentation
history:
141009: switched to new 13kV line ao -> 129-> ao
170607: installed new main breaker in substation.

all measurements in time order:
180421: another slow transfer from generator to commercial.
180419: transfer switch after island wide blackout.
170608: power outage. Voltage Phase->gnd to 13Kv.


Monitoring the site power

    A programmable breaker (ABB eVD4) was installed in the power substation in mar13. This breakersmeasures the power, voltage, currents .. at the input to the substation. The information is queried and written to disc once a minute. At 7:10 am every morning plots are made of the power usage from the last 7 days. Once a month plots are made for the entire month:


The plots:

Power  substation plots for the last 7 days (.ps) (.pdf):

Monthly substation plots
year
jan
Feb
mar
apr
may
jun
july
aug
sep
oct
nov
dec
2018
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2017
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2016
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2015
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2014
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2013


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Plot description:

    The plots are made once a day (at 7:10 am). The data is sampled once a minute. The   frames in each plot are:


 Programs used for the monitoring:


Site power Documentation:


Power issues:


180421: Another slow transfer from generator to commercial.

    On 21apr18 there was a short power dip around 5am and the site switched to generator (the rented one). The commercial power came back with a minute or 2. The transfer switch put the site back on commercial power 2.7 hours later .
    The plots show the reading from the site main breaker for 21apr18 AM (.ps) (.pdf)

Summary:

processing: x101/180421/pwrswitch.pro


180419: Site transfer switch after island wide blackout.

    On 18apr18 the power to the entire island went down around 10:20 am. The FEMA generator automatically switched in and ran the site.
The power in the local neighborhood returned around 12:30 am 19apr18. The AO transfer switch returned the site to commercial power around 8:22 19apr18.

    The local neighborhood and the ao power come from different lines. But i still thought it was a bit strange that AO waited 8 hours before it got commercial power back. I plotted up the data from the site main breaker to see what had occurred.

     The plot shows the reading from the site main breaker for 19apr18 AM (.ps) (.pdf)

Summary:

processing: x101/180419/pwrswitch.pro


170608: Power outage. PhToGnd voltage-> 13KV. (top)

    The main breaker in the substation was replaced on 07jun16. On 08jun16 the following occurred.

The plots show the recorded data for this period (.ps) (.pdf):

Issues:

Processing: x101/170608/spwr.pro



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