ess:design-installation-manual
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
ess:design-installation-manual [2019-12-10 21:50] – boekel | ess:design-installation-manual [2020-08-09 21:53] – [6. Controlling depth of discharge] jono | ||
---|---|---|---|
Line 1: | Line 1: | ||
====== ESS Design & installation manual ====== | ====== ESS Design & installation manual ====== | ||
+ | |||
+ | {{: | ||
===== 1. ESS Introduction & features ===== | ===== 1. ESS Introduction & features ===== | ||
Line 11: | Line 13: | ||
When an ESS system is able to produce more power than it can use and store, it can sell the surplus to the grid; and when it has insufficient energy or power, it automatically buys it from from the grid. | When an ESS system is able to produce more power than it can use and store, it can sell the surplus to the grid; and when it has insufficient energy or power, it automatically buys it from from the grid. | ||
- | In the ESS system, there must at least be one inverter/ | + | In the ESS system, there must at least be one inverter/ |
- | * [[https:// | + | * [[https:// |
* [[https:// | * [[https:// | ||
Line 52: | Line 54: | ||
Where there is no grid-meter; all loads are connected to AC-out. And where there is a PV Inverter present, that is also connected to AC out. | Where there is no grid-meter; all loads are connected to AC-out. And where there is a PV Inverter present, that is also connected to AC out. | ||
+ | |||
+ | {{: | ||
=== Optional feed-in of MPPT Solar charger power === | === Optional feed-in of MPPT Solar charger power === | ||
Line 343: | Line 347: | ||
* Victron 12.8V Lithium batteries, and other lithium batteries that have passive cell balancing | * Victron 12.8V Lithium batteries, and other lithium batteries that have passive cell balancing | ||
- | Because it makes no sense to leave a battery discharged, without reserve power in case of mains failure, we recommend leaving BatteryLife enabled | + | Because it makes no sense to leave a battery discharged, without reserve power in case of mains failure, we recommend leaving BatteryLife enabled |
- | * Lithium with active cell balancing | + | Redflow specifies that BatteryLife should be disabled in [[battery_compatibility: |
- | * [[battery_compatibility: | + | |
- | + | ||
- | However, BatteryLife //can// be disabled in these cases. | + | |
=== 4.3.2 Grid meter installed === | === 4.3.2 Grid meter installed === | ||
Line 393: | Line 394: | ||
=== 4.3.9 Limit charge power === | === 4.3.9 Limit charge power === | ||
- | This setting limits the amount of AC power used by the Multi for battery charging. The limit also applies to AC power received by the Multi from a grid-tie PV Inverter. | + | This setting limits the amount of AC power used by the Multi for battery charging. The limit also applies to AC power received by the Multi from any grid-tie PV Inverters connected to AC-in. |
- | In other words, this setting limits the flow of power from AC to DC. | + | In other words, this setting limits the flow of power from AC to DC on utilities connected to AC-in. |
* This setting does not reduce the charge power coming from //MPPT Solar Chargers//. | * This setting does not reduce the charge power coming from //MPPT Solar Chargers//. | ||
Line 536: | Line 537: | ||
Start the generator and check that the system begins to charge the batteries. | Start the generator and check that the system begins to charge the batteries. | ||
===== 6. Controlling depth of discharge ===== | ===== 6. Controlling depth of discharge ===== | ||
- | //(Note: All absolute voltages mentioned in the example below refer to a 12V system. Voltages should be multiplied by x2 or x4 for a 24V or 48V system, respectively.)// | + | //(Note: All absolute voltages mentioned in the example below refer to a 12V system. Voltages should be multiplied by x2 for a 24V system |
==== 6.1 Overview === | ==== 6.1 Overview === | ||
Line 689: | Line 690: | ||
(Make sure you install the ESS on L1. If it's installed on another phase the visualisation will be wrong.) | (Make sure you install the ESS on L1. If it's installed on another phase the visualisation will be wrong.) | ||
- | ==== 7.2 Three-phase ESS ==== | + | ==== 7.3 Three-phase ESS ==== |
A three-phase ESS system has at least one Multi installed on each phase. We recommend leaving the phase-compensation setting to its default: enabled. | A three-phase ESS system has at least one Multi installed on each phase. We recommend leaving the phase-compensation setting to its default: enabled. | ||
Line 847: | Line 848: | ||
With ESS in Optimize mode the system will always remain connected - even when the batteries are full. And although connected, the power draw is not substantial - this configuration offers the stability of the grid without additional grid consumption. | With ESS in Optimize mode the system will always remain connected - even when the batteries are full. And although connected, the power draw is not substantial - this configuration offers the stability of the grid without additional grid consumption. | ||
- | === Q4: Why is the VE.Bus state in //pass-through//? === | + | === Q4: Why is the VE.Bus state in pass-through? |
In ESS, the conditions for the VE.Bus system to be in // | In ESS, the conditions for the VE.Bus system to be in // | ||
- | | + | |
- | | + | |
- | | + | |
- | | + | |
+ | - A grid code is in use that requires the enabling of battery discharging by aux-inputs. Check the used grid-code in VEConfigure and compare with the electrical signals provided to the Inverter/ | ||
+ | - The Loss of Mains detection (LOM) causes issues, often in combination with a high impedance connectivity to the utility. For details see [[ve.bus: | ||
=== Q5: How can I suppress low battery warnings? === | === Q5: How can I suppress low battery warnings? === | ||
Line 888: | Line 891: | ||
Switching off in overload, while connected to the grid, is caused by the active Loss of Mains (LOM) detection, linked to the country code as configured in VEConfigure3. | Switching off in overload, while connected to the grid, is caused by the active Loss of Mains (LOM) detection, linked to the country code as configured in VEConfigure3. | ||
- | This behaviour occurs when the AC supplied on the AC-in of the Multi or Quattro is ' | + | This behaviour occurs when the AC supplied on the AC-in of the Multi or Quattro is ' |
For the solution and configuration options, see [[ve.bus: | For the solution and configuration options, see [[ve.bus: | ||
Line 908: | Line 911: | ||
__Lastly__, check that the rocker switch on the unit is set to On, rather than to Charger-Only. When set to charger-only, | __Lastly__, check that the rocker switch on the unit is set to On, rather than to Charger-Only. When set to charger-only, | ||
- | === Q10: My battery is first discharging, | + | __Finally__, |
+ | |||
+ | === Q10: Why does the system refuse to discharge my battery? === | ||
+ | |||
+ | See Q9. | ||
+ | |||
+ | === Q11: My battery is first discharging, | ||
The recharge you are seeing might be part of the Sustain protection. Consider increasing the minimum SOC level. For example increase it with 5%; and then check what happens. | The recharge you are seeing might be part of the Sustain protection. Consider increasing the minimum SOC level. For example increase it with 5%; and then check what happens. | ||
Line 916: | Line 925: | ||
Search this manual for Sustain to learn more. | Search this manual for Sustain to learn more. | ||
- | === Q11: What is auto-recharge? | + | === Q12: What is auto-recharge? |
The system will automatically recharge the battery (from the grid) when the SOC drops 5% or more below the value of ‘Minimum SOC’ in the ESS menu. Recharge stops when it the battery is recharged up to the Minimum SOC level. | The system will automatically recharge the battery (from the grid) when the SOC drops 5% or more below the value of ‘Minimum SOC’ in the ESS menu. Recharge stops when it the battery is recharged up to the Minimum SOC level. | ||
- | === Q12: Can I use ESS in a vehicle or a boat? === | + | === Q13: Can I use ESS in a vehicle or a boat? === |
No, you cannot. After unplugging the shore cord it can take up a moment for the system to detect the loss of mains and open the back-feed relay. During those seconds, the shore power plug will be live: there is 110/230 Volts AC on the terminals. The exact number of seconds differs per country and depends on the local requirements. | No, you cannot. After unplugging the shore cord it can take up a moment for the system to detect the loss of mains and open the back-feed relay. During those seconds, the shore power plug will be live: there is 110/230 Volts AC on the terminals. The exact number of seconds differs per country and depends on the local requirements. | ||
The same applies to other solutions where the wiring is not protected against accidental removing, for example a simple cable with end-user removable plug, such as a portable power supply. | The same applies to other solutions where the wiring is not protected against accidental removing, for example a simple cable with end-user removable plug, such as a portable power supply. | ||
+ | ===== 10. Troubleshooting ===== | ||
+ | Trouble shooting steps: | ||
- | ===== Troubleshooting ===== | + | |
- | + | - Check battery type/brand. If lead then it might be unsuitable and probably broken because of the heavy cycling. | |
- | - Start with checking firmware versions (needs to be latest). And when asking questions; report the exact firmware versions that are used. | + | - If some unknown or unsupported CANbus battery; change the battery to a supported type. |
- | + | - Check the state of the inverter/ | |
- | - Check battery type/brand. If lead then it might be unsuitable and probably broken because of the heavy cycling. | + | |
- | + | ||
- | - If some unknown or unsupported CANbus battery; change the battery to a supported type. | + | |
Then; if PV is not used enough to power loads; | Then; if PV is not used enough to power loads; | ||
- | - Check for the # reason codes; see CODE KEY in this manual. | + | |
- | + | - Check wiring: lots of voltage drop between MPPT and multi will prevent the system from effectively powering AC loads from solar power. | |
- | - Check wiring: lots of voltage drop between MPPT and multi will prevent the system from effectively powering AC loads from solar power. | + | - Test with and without SVS enabled: leave it disabled. |
- | + | - Next, check MPPT charge current limit during the time that it is not used enough. MPPT CCL is supposed to be high always; even when battery full. Unless there is a temperature issue. | |
- | - Test with and without SVS enabled. | + | - Now check MPPT Charge Voltage Setpoint. It is supposed to be above actual battery voltage. |
- | + | ||
- | - Next, check MPPT charge current limit during the time that it is not used enough. MPPT CCL is supposed to be high always; even when battery full. Unless there is a temperature issue. | + | |
- | + | ||
- | - Now check MPPT Charge Voltage Setpoint. It is supposed to be above actual battery voltage. | + | |
- | + | ||
- | + | ||
- | Note that those last two setpoints are determined by software; and calculated based on the setpoints sent by the (CANbus connected) lithium battery: you can't change change them manually. Looking at them however does help understanding why certains things are happening; | + | |
+ | Note that those last two set points are determined by software; and calculated based on the setpoints sent by the (CANbus connected) lithium battery: you can't change them manually. Looking at them however does help understanding why certain things are happening; | ||
===== DISQUS ===== | ===== DISQUS ===== | ||
~~DISQUS~~ | ~~DISQUS~~ |
ess/design-installation-manual.txt · Last modified: 2021-01-14 08:35 by marmour