Others
Maintenance
1
Maintenance
Used to bulk turn on/off all devices in the power station.
Hard export limit control
1
Hard export limit control enable
When it is set to 
, the device shuts down when the reverse power exceeds the threshold setting or Gateway/Power sensor is disconnected.
2
Hard export limit control threshold
When the actual grid feed-in power is greater than the "Hard export limit control threshold," the device shuts down.
When the actual grid feed-in power is lower than the "Hard export limit control threshold," the device powers on.
3
Hard export limit control recover enable
If set to , when the overrun protection is triggered, the power rises according to the "Grid Fault Recovery Power Gradient" setting.
Charge & Discharge
1
Charge Cut-off SOC
Sets the capacity at which the battery pack stops charging.
2
Discharge Cut-off SOC
Sets the capacity at which the battery pack stops discharging.
Value 0 is not recommended for this parameter to avoid irreversible attenuation due to failure to charge the battery pack in time.
The priority is given to "Backup Capacity" in backup power networking mode, while the parameter is applied in non-backup power networking mode.
3
Backup Reserve SOC
You can set this parameter when a gateway exists in the network.
In the on-grid scenario, the battery pack stops discharging when the backup capacity value is reached. In the off-grid scenario, the battery pack supplies power to power device and stops discharging when the Discharge Cut-off SOC setting is reached.
Users can manually set this parameter according to the power interruption frequency of their regions and leave time. Value 0 is not recommended for this parameter to avoid irreversible attenuation due to failure to charge the battery pack in time.
Grid Code
1
Grid Code
Specifies a grid code based on the country/region when devices are used.
Battery Preheating Scheduling
1
Grid Code
Set toto set the battery preheating period.
Grid And Off-grid controller
1
Off-grid controller type
Set the type of device that controls off-grid operation.
Auto detection: Set to this parameter when the device of the company (for example, Gateway) controls off-grid operation.
Third-party backup power box: Set to this parameter when the device of a third-party company (for example, transfer switch) controls off-grid operation.
2
Off-grid enable
When the system allows the inverter to operate in off-grid mode, if it is set to , the inverter operates in an off-grid mode in the event of a grid power outage.
Off-Grid Switching Control
Before configuring off-grid switching parameters, ensure that the Gateway is connected in the system network.
1
Custom On Off Grid Switch Enable
When set, the voltage and frequency thresholds for grid-connected/off-grid switching can be customized. When the actual voltage or frequency exceeds the set range, the system switches from grid-connected operation to off-grid operation.
When set
, the system follows the grid code standards for over-voltage, under-voltage, over-frequency, and under-frequency thresholds. If the actual voltage or frequency exceeds the set range, the system switches from grid-connected to off-grid operation.
2
Over-voltage Switching Threshold
Used to set the on-grid-to-off-grid overvoltage switch point.
3
Under-voltage Switching Threshold
Used to set the on-grid-to-off-grid undervoltage switch point.
4
Over-frequency Switching Threshold
Used to set the on-grid-to-off-grid overfrequency switch point.
5
Under-frequency Switching Threshold
Used to set the on-grid-to-off-grid underfrequency switch point.
6
SOC Switching Hysteresis Threshold
When the battery SOC approaches the discharge cutoff SOC, the system prevents frequent start-stop cycles. It will only restart operation when the actual SOC exceeds the "Discharge cutoff SOC plus the off-grid startup SOC hysteresis value".
7
Output Voltage Regulation Ratio
In off-grid mode, the inverter outputs the rated voltage. However, due to external factors such as line losses, a slight deviation may occur between the actual load voltage and the rated voltage. This parameter is used to compensate for such deviations, with an adjustable compensation range of [-10V, 10V].
DO Custom
1
DO Custom Function Enable
When it is set to , the DO custom function is enabled, and a third-party device (for example, heat pump) can connect to the device of the company through the DO port.
2
DO Custom Function Input Port
Set the DO port to which the device connects to according to the wiring.
3
DO Custom Function Mode
Set the DO port mode.
4
Connected Device SN
Set the SN of the inverter to which the device connects through the DO port.
Grid Conrol
1
Grid Connection Point Voltage Control Enable
When set，When the grid connection point voltage rises, the AC output power is limited to prevent excessive power output, which could cause overvoltage at the grid connection point and trigger a grid overvoltage shutdown.
Voltage Protection
1
Level-N Overvoltage Protection Threshold
Specifies the level-N overvoltage threshold. When the actual voltage is greater than the set threshold, and the set protection duration is met, an alarm will be triggered on the device. On the contrary, an alarm will be cleared.
2
Level-N Overvoltage Protection Duration
Specifies the duration for level-N overvoltage protection.
3
Level-N Undervoltage Protection Threshold
Specifies the level-N undervoltage threshold. When the actual voltage is lower than the set threshold, and the set protection duration is met, an alarm will be triggered on the device. On the contrary, an alarm will be cleared.
4
Level-N Undervoltage Protection Duration
Specifies the duration for level-N undervoltage protection.
5
Ten-Minute Sliding Window Overvoltage Protection Threshold
Specifies the 10-minute overvoltage protection threshold. When the average voltage value in a 10-minute window is greater than the set threshold, and the set protection duration is met, an alarm will be triggered on the device. On the contrary, an alarm will be cleared.
6
Ten-Minute Sliding Window Overvoltage Protection Time
Specifies a 10-minute overvoltage protection duration.
Note: N is a numeric value from 1 to 6. You can set a parameter for "Voltage Protection" to associate with "Grid Code.” For available parameters, the screen display shall prevail.
Frequency Protection
1
Level-N Overfrequency Protection Threshold
Specifies the level-N overfrequency threshold. When the actual grid frequency is greater than the set threshold, and the set protection duration is met, an alarm will be triggered on the device. On the contrary, an alarm will be cleared.
2
Level-N Overfrequency Protection Duration
Specifies the duration for level-N overfrequency protection.
3
Level-N Underfrequency Protection Threshold
Specifies the level-N underfrequency threshold. When the actual grid frequency is lower than the set threshold, and the set protection duration is met, an alarm will be triggered on the device. On the contrary, an alarm will be cleared.
4
Level-N Underfrequency Protection Duration
Specifies the duration for level-N underfrequency protection.
Note: N is a numeric value from 1 to 6. You can set a parameter for "Frequency Protection" to associate with "Grid Code.” For available parameters, the screen display shall prevail.
Grid Fault Reconnection
1
Grid Fault Reconnect Enable
When it is set to 
, the device can be connected to the power grid only when the actual grid voltage and frequency are within the set range, and this state is maintained for the set duration after the power grid resumes normal operation.
2
Reconnection Upper Frequency
After the grid fault is restored, the device is not allowed to reconnect to the grid when the grid frequency is higher than the set value of "Reconnection Upper Frequency."
3
Reconnection Lower Frequency
After the grid fault is restored, the device is not allowed to reconnect to the grid when the grid frequency is lower than the set value of "Reconnection Lower Frequency."
4
Reconnection Upper Voltage
After the grid fault is restored, the device is not allowed to reconnect to the grid when the grid voltage is higher than the set value of "Reconnection Upper Voltage."
5
Reconnection Lower Voltage
After the grid fault is restored, the device is not allowed to reconnect to the grid when the grid voltage is lower than the set value of "Reconnection Lower Voltage."
6
Grid fault recovery power gradient
When grid power is restored, output power according to the preset power gradient.
7
Observation Time
Set the waiting time for the device to restart after the grid fault is restored.
8
Grid fault recovery time to grids
Specifies the time after which the actual grid voltage and frequency are within the set range, and the device waits for the grid connection after the power grid recovers normal operation.
P-U Curve
1
P-U Voltage Enable
When it is set to 
, the grid voltage, based on the P-U curve correspondence, regulates the active power output from the device.
2
P-U curve Points included
Specifies the ratio P/Pn between the active power and the rated power that the device regulates in real time based on the ratio U/Un(%) between the actual voltage and the rated voltage.
3
P-U curve power regulation time
Specifies the time required to regulate 95% of the active power output from the device based on the P-U curve correspondence due to grid voltage change.
Reactive power regulation
1
QU Curve Enable
When set to 
, the Q-U Curve parameters can be configured.
2
Q-U Curve
Lock In Power: Set the P/Pmax threshold to trigger the Q-U curve function. When the device's actual power exceeds the set value, the Q-U curve dispatch function is activated. Lock Out Power: Set P/Pmax for deactivating Q-U curve function. The device exits Q-U curve dispatching when actual power is below the set value. Response Time: Under-frequency power boost response time: The delay time for power response when frequency falls below threshold.
3
Pf-P Curve Enable
When set to，PF-P/Pn curve parameters are configurable.
4
PF-P/Pn Curve
Response Time: Set the response time required to adjust the device's reactive power output to 95% of the target value based on the defined PF-P/Pn curve relationship.
Power Response to overfrequency
1
Power Response to Overfrequency Enable
The grid frequency is greater than the trigger value when it is set to . This setting will limit the device from outputting active power.
2
Trigger Frequency
Specifies the threshold for triggering derating upon overfrequency.
3
Power Droop Rate
The active power is recovered based on the gradient setting after the frequency is recovered.
4
Exit Frequency
Specifies the threshold to exit derating upon overfrequency. That is, when the grid frequency is lower than the exit threshold, the device outputs active power and derating stops.
5
Power Reference Mode
Freeze active power on trigger: Specifies the real-time active power when derating upon overfrequency is triggered.
Maximum active power: Specifies the maximum active power of the device.
Rated power: Specifies the rated power of the device.
Remaining charge power capacity of battery: Specifies the real-time power + energy storage charging power when derating upon overfrequency is triggered.
6
Overfrequency derating response delay
The delay time before the device's output power starts to change after frequent derating is set.
7
Overfrequency derating response time
Set the time required for the output power of the device to start changing till reach 95% of the stable value after derating upon overfrequency is triggered.
8
Overfrequency derating exit delay
If "Overfrequency derating exit frequency enable" is set to 
, you can use this parameter to set the time for the device to stop output active power derating when derating upon overfrequency exits, provided that the grid frequency is lower than the "Over-Frequency Derating Exit Frequency" setting.
9
Overfrequency derating exit frequency enable
When it is set to 
, "Overfrequency derating exit delay" takes effect, and you can set the "Overfrequency derating exit delay" value.
10
Overfrequency derating exit delay
The delay time for the device to restore to pre-derating power after the frequency falls below the exit frequency.
Power Response to underfrequency
1
Power Response to Underfrequency Enable
The grid frequency is lower than the trigger value when it is set to 
, and the device outputs a higher active power.
2
Trigger Frequency
Specifies the threshold for triggering power rise upon underfrequency.
3
Power Droop Rate
The active power is recovered based on the gradient setting after the frequency is recovered.
4
Exit Frequency
Specifies the threshold for exiting power rise upon underfrequency. That is, when the grid frequency is greater than the exit threshold, the device outputs active power, and the power rise stops.
5
Underfrequency power boost power reference mode
The active power rises according to the set mode when power rise upon underfrequency is triggered.
Freeze active power on trigger: Specifies the real-time active power when power rise upon underfrequency is triggered.
Maximum active power: Specifies the maximum active power.
Remaining active power capacity of PCS: Specifies the rated power of the device.
Remaining discharge power capacity of battery: Specifies the real-time power + energy storage discharging power when power rise upon underfrequency is triggered.
6
Underfrequency power boost response delay
Set the time for waiting for the active power output of the device to change when power rise upon underfrequency is triggered.
Underfrequency Rise power response time
Under-frequency power boost response time - the delay time for power response when frequency falls below threshold
7
Underfrequency power boost exit delay
If "Underfrequency power boost exit frequency enable" is set to 
, you can use this parameter to set the time for the device to stop output active power rise when power rise upon underfrequency exits, provided that the grid frequency is greater than the "Under-Frequency Power Increase Exit Frequency" setting.
8
Underfrequency power boost exit frequency enable
When it is set to 
, "Underfrequency power boost exit delay" takes effect, and you can set the "Underfrequency power boost exit delay" value.
Low Voltage Ride Through
1
LVRT Enable
When it is set to
, if low voltage occurs in a short time due to grid fault, the devices shall stay connected for short periods of time instead of immediately separating from the power grid.
2
LVRT Mode
Set low penetration mode. Low penetration mode includes Reactive power priority, Active power priority, Zero current, and Constant current.
3
LVRT Curve
Sets the low voltage ride-through capability.
4
Trigger Threshold
When the grid voltage is greater than the value set by this parameter, low voltage ride-through will be triggered.
5
Zero Current Mode Trigger Threshold
Zero current mode trigger threshold.When the grid voltage is lower than this threshold, the zero current mode will be triggered.
High Voltage Ride Through
1
HVRT Enable
When it is set to , if high voltage occurs in a short time due to grid fault, the devices shall stay connected for short periods of time instead of immediately separating from the power grid.
2
HVRT Curve
Sets the high voltage ride-through capability.
3
Trigger Threshold
High voltage ride-through is triggered when the grid voltage is greater than this parameter setting.
Startup Grid Connection
1
Startup Grid Connection Enable
When it is set to , the device can be connected to the power grid only when the actual grid voltage and frequency are within the set range, and this state is maintained for the set duration.
2
Observation Time
Specifies the time after which the actual grid voltage and frequency are within the set range, and the device waits for the grid connection after the device is powered on.
3
Connection Upper Frequency
Specifies the allowable maximum frequency for the grid connection after the device is powered on.
4
Connection Lower Frequency
Specifies the allowable minimum frequency for the grid connection after the device is powered on.
5
Connection Upper Voltage
Specifies the allowable maximum voltage for the grid connection after the device is powered on.
6
Connection Lower Voltage
Specifies the allowable minimum voltage for the grid connection after the device is powered on.
7
Startup Grid Connection Detection Power Gradient
Specifies the power rise gradient after the device is connected to the grid after being powered on.
Islanding
1
Active Islanding
When it is set to 
, the output power, frequency, or phase can be disturbed to a certain extent by using a control unit.
2
Passive Islanding
When it is set to 
, the islanding effect will be detected by the change of output voltage, frequency, phase, or harmonics during the power outage.
Off-Grid Settings
Application scenario: When the Sigenergy inverter operates off-grid without PV connection, while photovoltaic arrays are connected to a third-party inverter.
1
Enable 3rd Party PV Inverter Black Start
When it is set to , the energy storage system will reserve SOC to initiate morning startup.
2
SOC Reserved For Black Start
The reserved SOC serves as the energy source for next-day black start.
3 Phase Switch To 2 Phase
Supports connecting equipment using two phases in a three-phase four-wire grid.
1
3 Phase Switch To 2 Phase Enable
When it is set to , Two-phase grid connection is supported.
Third Party Inverter Control
1
3rd Party Inverter Control Disconnection Enable
When it is set to , The system can disconnect third-party inverters. This feature activates when anomalies are detected (e.g., islanding, grid faults, etc.).
2
Third Party Inverter Control Disconnection Delay Time
When it is set to , Set a delay time for third-party inverter disconnection. After configuration, the system will wait for the specified delay before executing the disconnection, preventing false triggers or frequent switching due to transient fluctuations.
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