Webserver menu – Service menu – Grid parameterization
The following menu items can be used to set the parameters in the inverter, which are specified by the grid operator.
IMPORTANT INFORMATION
The settings may only be adjusted by trained and qualified electricians.
The electrician is responsible for ensuring that the applicable standards and regulations are observed and implemented. Work that could affect the electrical power system of the respective energy supply company at the site of the solar energy feed-in may only be carried out by qualified electricians expressly authorised (licensed) by the energy supply company.
This includes changes to the factory preset parameters of the inverter.
Parameters may only be changed on the inverter by qualified electricians who are familiar with the system and at the request of the grid operator.
Inappropriate settings can be hazardous and lead to injury or even death of the user or third parties. Material damage to the device and other equipment can also occur.
- Display parameterisation report
The parameterisation report provides an overview of the parameters set in the inverter.
- Reactive power settings (only configurable with service code)
The following can be selected:
|
Parameter |
Explanation |
|---|---|
|
No reactive power mode active |
No reactive power is set. |
|
Reactive power Q |
The grid operator (energy supply company) specifies a fixed reactive power in Var. |
|
Displacement factor cos φ |
The grid operator specifies a fixed displacement factor cos φ. |
|
Reactive power/voltage characteristic curve Q(U) |
The grid operator specifies a characteristic curve Q(U). |
|
Displacement factor/power curve cos φ |
The grid operator specifies a characteristic curve for cos φ (P). |
- Configuration of the start-up ramp (only configurable with service code)
|
Parameter |
Explanation |
|---|---|
|
Ramp time [s] |
States the inverter's wait time in seconds after a restart or grid error before starting up. The ramp time is also used for P(f) and P(U). |
- Configuration of LVRT/HVRT (only configurable with service code)
|
Parameter |
Explanation |
|---|---|
|
LVRT |
Configuration of Low-Voltage-Ride-Through LVRT is the electrical ability to provide dynamic grid support through electrical generation units. |
|
HVRT |
Configuration of High-Voltage-Ride-Through HVRT is the electrical ability to provide dynamic grid support through electrical generation units. |
- Configuration of power reduction if overfrequency occurs P(f) (only configurable with service code)
|
Parameter |
Explanation |
|---|---|
|
Reduction curve |
The characteristic curve is defined by a change in frequency which is expressed as a percentage of the rated frequency and causes a 100% change in rated output. |
|
Conditions for returning to normal mode |
Input of frequency range and waiting time in seconds |
- Configuration of power reduction if overvoltage occurs P(U) (only configurable with service code)
|
Parameter |
Explanation |
|---|---|
|
Reduction curve |
The characteristic curve is defined by a voltage start and end point. The power is reduced by 0% at the start point and by 100% at the end point. |
|
Settling time |
Selection of the settling time |
|
Conditions for returning to normal mode |
The reduction in power ends once the voltage has fallen below the specified value and the stated waiting time has passed. |
- Settling time (only configurable with service code)
Set the settling time when externally controlling the reactive power or active power using ripple control receiver or Modbus.
|
Parameter |
Explanation |
|---|---|
|
Settling time [s] |
When externally controlling the reactive power (Q, cos φ), the settling time can be set in seconds. Select the specifications of the grid operator (energy supply company) here. |
|
Mode |
With external control of active power, the following parameters can be set. Standard: no further details needed (default) PT1: Selection of the settling time in seconds. Power gradient: Input of maximum power limit gradient. Enter the specifications of the grid operator (energy supply company) here. |
- Grid and system protection (only configurable with service code)
The settings for the grid and system protection may only be changed in exceptional cases for good reason and in consultation with the grid operator (energy supply company).
|
Parameter |
Explanation |
|---|---|
|
Shutdown limits for voltage |
The settings for the grid and system protection may only be changed in exceptional cases for good reason and in consultation with the grid operator (energy supply company). Enter the specified values in the corresponding fields. |
|
Shutdown limits for frequency | |
|
Use switchable shutdown limits | |
|
Start-up conditions |
- Grid and system protection self-test
Performs a self-test with the set values and outputs the result.