Cummings diesel generators

20Nov13

Recent generator usage:
01dec13: generator startup with site as load.
19nov13:Monitoring generators with sband Tx on
    -Performance
Yearly Usage:
Documentation:

Intro

    The site has 4 1 MegaWatt  Cummings generators. They are used for backup site power and running the sband transmitter.

Monitoring the generators. 

  The generators can be queried using the modbus protocol. The program that does this:



Recent generator usage:

    The plots show the generator usage for:

Page 1:
Page 2:

processing: x101/generator/cgenstatdaily.sc

Fuel deliveries and Fuel usage:

date
time
delivery
(gallons)
Stick measurement
when fuel added
(gallons)
GenMeter
when fuel added
(Cumulative)
Fuel used
between deliveries
ratio
FuelGenMeter/
FuelStick
Daily Usage
Gal/Day
before
after
Stick
genMeter
stick
GenMet
171021
12:00
2000
-
9130
758272.
-
-
-
-
-
171028
11:00
5000
5167
10321
763612.
3963
5349
1.35
569
767
171107
14:00
5000
4163
9153
771072
6158
7460
1.21
608
736
171116
07:00
6000
3835
9900
778005
5318
6934
1.30
611
796
171122
07:00
4000
6075
10170
782650
3825
4644
1.21
637
774
   
processing:x101/generator/totFuel.pro

01dec13: Generator startup with site as load.

    The power failed on Sunday 01dec13 at 17:39:20. The site was the generator load.
The plots show the generators for  the first 10 minutes after startup (.ps) (.pdf):

Summary:

processing: x101/131202/genstartup.pro

19Nov13: first look at data while sband transmitter is on.

    Data was taken on 19Nov13 while the sband transmitter was in operation. They sband  was transmitting around 850 KWatts.

    The plots show the generator performance for 3 hours (.ps) (.pdf)

Summary:

Performance for  the 3 generators combined:

Power
2180 KW
Full power
11 KW
startup (cooling off)
80 KW
startup (cooling on)

Pumps use 70 KW
powerFactor
> .9
above 750 KW
fuel consumption
linear  above 700 KW

26 Gal/Hour
startup cooling off. Fuel rate for no load.
31 Gal/Hour
startup cooling on
187 Gal/Hour
full power
Efficiency
KW for 1 Gal/Hour
Efficiency
1 Gallon of diesel = 40.7 KWHr
11.8 KW
29%
Full Power
2.5
6%
pumps on, no HV xmter
.7 KW
1.7%
pumps off, no load.
processing:x101/131119/cgen.pro


Yearly usage (top)

    Hour used and fuel consumed .. by generator and totals.

processing: x101/generator/chkusage.pro


Documentation:  (top)



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