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Outback Skybox LFP settings and netmetering with backup using battery challenges

goldserve

Solar Enthusiast
Joined
Apr 26, 2022
Messages
420
I finally set up the Outback skybox and it is great. I got 2 x EG4 batteries so I wanted to post my settings to have people check if I could optimize the system even more.

One of the challenges was to get the skybox to use battery whenever the LCOE (levelized cost of energy) is lower than the grid TOU rates. Right now, I'm using self consumption and it is using the battery but not exactly the way I want the skybox to.

Here are my settings from OpticsRE:

SUBSECTION : STATUS

ATTRIBUTES :

Current Status : FAULT

Power Factor : -0.99

AC Voltage : 246.1 V

Solar Input : OK

Grid Input : OK

Load Input : OK

Battery Input : OK

Generator Input : OK

Solar Output : OK

Grid Output : OK

Load Output : OK

Battery Output : OK

Generator Output : OK

Solar Other : 128

Grid Other : OK

Load Other : OK

Battery Other : OK

Generator Other : OK

Units Detected : 1

Model Number : SBX5048_120_240

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Nominal AC Output Voltage : 120/240 (US Models)

Nominal Frequency : 60 Hz

RSD Rapid Shutdown Response : PV

CT Type : Custom

Rated Current : 300 A

Phase Shift : 0

Turns Ratio : 3,000

Units Installed : 1

Role : Master

Endpoint Termination : Enable

12V AUX port : Off

Relay AUX port : Off

***************************************************************
TAB : PV

SUBSECTION : STATUS

ATTRIBUTES :

PV Voltage : 12 V

PV Current : 0 A

PV Wattage : 0 KW

Peak Power : 5,525.16 W

Date and Time of Peak Power : 04/23/2021 12:09

Highest Voc : 561.9 V

Date and Time of Voc Occurrence : 05/13/2015 21:44

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Vmp : 30.9 V

Voc : 38.1 V

Imp : 8.58 A

Isc : 9.08 A

Pmp : 265 W

Module Type : Polycrystalline

Number of Parallel Strings : 2

Number of Modules in Series per String : 8

Array Size (STC Watts) : 0 KW

***************************************************************
TAB : Grid

SUBSECTION : STATUS

ATTRIBUTES :

Frequency : 59.99 Hz

Power Factor : 1

Grid Sell Timer Status : 00:00 MIN:SEC

AC Voltage : 246 VAC

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Grid desired mode : Self-consumption

GridZero Max Threshold : 4 KW

Charge Limit : 6 KW

Demand Cap Enable : Yes

Maximum grid demand limit : 12 KW

Enable time of use rates : Yes

Cost of Energy per kWh (flat rate) : 0

Grid Interconnection Profile : IEEE 1547 2003

Sell Limit : 5 KW

HV1 (%VACnom) : 110 %VACnom

LV1 (%VACnom) : 88 %VACnom

HV2 (%VACnom) : 120 %VACnom

LV2 (%VACnom) : 50 %VACnom

HVTRP1 : 1 SECS

LVTRP1 : 2 SECS

HVTRP2 : 0.16 SECS

LVTRP2 : 0.16 SECS

RCDL : 60 SECS

HVRC : 108 %VACnom

LVRC : 90 %VACnom

HFRC : 0.4 Hz

LFRC : 0.6 Hz

HF1 : 0.5 Hz

LF1 : 0.7 Hz

HFTRP1 : 0.16 SECS

LFTRP1 : 0.16 SECS

***************************************************************
TAB : Load

SUBSECTION : STATUS

ATTRIBUTES :

Percent of Skybox Capacity : 11 %

L1 Total Load : 0.18 KW

L1 Self Supply : 0 KW

L2 Total Load : 0.41 KW

L2 Self Supply : 0 KW

Lifetime Self Supply : 1.19 MWh

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Enable Off-Grid AC Load Management : Off

Load Management Threshold : 35 %

Drop 240v on Grid Disconnect : No

Drop 240v on Low SOC : No

Drop L2 on Low SOC : No

***************************************************************
TAB : Battery

SUBSECTION : STATUS

ATTRIBUTES :

State of Charge : 60 %

Charge Status : Charger Off

Battery Voltage : 53 V

Battery Temperature : N/A

Remaining Run Time : 00:08:54 dd:hh:mm

Temperature Compensation Offset : 0 V

Cumulative Discharge : 0.05 kWh

Battery Discharging Lifetime : 0 MWh

Days Since Charged Parameters Met : 0

Lowest Battery SOC : 99 %

Lowest Battery Voltage : 52.87 V

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Battery Series : Custom

Battery Model Number : CUSTOM LITHIUM

Battery Description : EG4_LIFEPO4

Battery amp-hours per string : 200 Ah

Battery Installation Date : 07/2022

Battery Manufacture Date : 01/2022

Charge Efficiency Factor : 98 %

Battery Installation Cost : 0

Absorb end amps per string : 10 A

Charge amps per string : 60 A

Discharge amps per string : 100 A

Number of strings : 1

Battery Levelized Cost of Energy : 0.07

Lifetime Cycles : 1,500

Minimum SOC : 35 %

Maximum SOC : 100 %

Absorb Charge : Timed

Absorb Voltage : 57.4 V

Rebulk Voltage : 51.2 V

Max Absorb Time : 02:00 HRS:MIN

Low Battery Cut-Out Voltage LBCO : 48 V

High Battery Cut-Out Voltage HBCO : 58.4 V

LBCO Time Delay : 00:10 MIN:SEC

HBCO Time Delay : 00:10 MIN:SEC

Low Battery Restart : 49 V

High Battery Restart : 58.4 V

battery_charge_amps_per_string : 30 A

***************************************************************
TAB : Generator

SUBSECTION : STATUS

ATTRIBUTES :

Generator Status : Off

Frequency : 0 Hz

Power Factor : 1

Total runtime : 00:00 HRS:MIN

Last Start Reason : None

Output Voltage : 20.3 V

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Generator Max Input Current Limit : 60 A

Support Threshold : 6 kVA

High Voltage Limit L-N : 130 V

Low Voltage Limit L-N : 105 V

High Frequency Limit : 63 Hz

Low Frequency Limit : 57 Hz

Generator Type : AC

Output Rating : 5 kVA

Connect Delay : 30 SECS

Disconnect Delay : 1 SECS

Warm Up Time : 00:00 MIN:SEC

Cool Down Time : 05:00 MIN:SEC

Enable AGS on low battery : No

SOC Level to Start : 50 %

SOC Level to Stop : 80 %

24 Hour Voltage Start Level : 48.8 V

2 Hour Voltage Start Level : 47.2 V

2 Min Voltage Start Level : 44 V

Enable AGS Start on Load : No

Load Start : 5 KW

Load Start Delay : 5 MIN

Load Stop : 5 KW

Load Stop Delay : 1 MIN

Enable AGS Quiet : No

Weekday Quiet Time Begin : 00:00 HRS:MIN

Weekday Quiet Time End : 00:00 HRS:MIN

Weekend Quiet Time Begin : 00:00 HRS:MIN

Weekend Quiet Time End : 00:00 HRS:MIN

Enable AGS Exercise : No

Generator Exercise Start : 12:00 HRS:MIN

Exercise Duration : 15 minutes

Exercise Interval : Monthly

Excersise day of month : 1

***************************************************************
TAB : Firmware

SUBSECTION : STATUS

ATTRIBUTES :

Running Version : 1.5.30

Last Check for Update :

Latest Version Found : N/A

Downloaded Version : N/A

Local Drive Detected : N/A
 
Optimized battery while monitoring boms.

TAB : Battery

SUBSECTION : STATUS

ATTRIBUTES :

State of Charge : 98 %

Charge Status : Charger Off

Battery Voltage : 53 V

Battery Temperature : N/A

Remaining Run Time : 00:12:11 dd:hh:mm

Temperature Compensation Offset : 0 V

Cumulative Discharge : 7.87 kWh

Battery Discharging Lifetime : 0.01 MWh

Days Since Charged Parameters Met : 0

Lowest Battery SOC : 57 %

Lowest Battery Voltage : 51.92 V

***************************************************************
SUBSECTION : CONFIG

ATTRIBUTES :

Battery Series : Custom

Battery Model Number : CUSTOM LITHIUM

Battery Description : EG4_LIFEPO4

Battery amp-hours per string : 200 Ah

Battery Installation Date : 07/2022

Battery Manufacture Date : 01/2022

Charge Efficiency Factor : 98 %

Battery Installation Cost : 0

Absorb end amps per string : 10 A

Charge amps per string : 80 A

Discharge amps per string : 100 A

Number of strings : 1

Battery Levelized Cost of Energy : 0.07

Lifetime Cycles : 1,500

Minimum SOC : 35 %

Maximum SOC : 100 %

Absorb Charge : Timed

Absorb Voltage : 55 V

Rebulk Voltage : 51 V

Max Absorb Time : 00:10 HRS:MIN

Low Battery Cut-Out Voltage LBCO : 49 V

High Battery Cut-Out Voltage HBCO : 58 V

LBCO Time Delay : 00:10 MIN:SEC

HBCO Time Delay : 00:10 MIN:SEC

Low Battery Restart : 50 V

High Battery Restart : 57 V

battery_charge_amps_per_string : 30 A
 
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