Active/Reactive Power Control And Fault Ride Through; Active Power Control; Power Limit; Power Vs. Frequency - Delta PhotoVoltaic RPI-C500 Manual

I
NSTALLATION
5.10. Active/Reactive Power Control
and Fault Ride Through
User can only set Active/Reactive power control in Grid System = Germany MV, India, or
China (User has to key in password to change these settings). Fault ride through (FRT) can
only be set in Grid System = Germany MV, India, or China.
There are 2 settings for active power control and 4 settings for reactive power control based
on the requirement from network operator. User can select either or both active power control
methods and/or one of the reactive power control methods.

5.10.1. Active Power Control

5.10.1.1. Power Limit

According to BDEW technical guideline in page 25 of June 2008 version as below:
It must be possible to operate the generating facility at reduced power output. In the cases
listed below, the network operator is entitled to require a temporary limitation of the power
feed-in or disconnect the facility:
- potential danger to secure system operation,
congestion or risk of overload on the network operator's network,
-
- risk of islanding,
- risk to the steady-state or dynamic network stability,
- rise in frequency endangering the system stability,
- repairs or implementation of construction measures,
- within the scope of generation management/ feed-in management/ network security
management (see „Grundzüge zum Erzeugungsmanagement")
-
User can reduce inverter output power by set percentage of actual or rated power. Please
refer to 5.11.7.4.1 Power Limit for the settings procedure.

5.10.1.2. Power vs. Frequency

User can set all necessary settings to meet the requirements from network operator. Please
refer to 5.11.7.4.2 Power vs. Frequency for the settings procedure.
Where:
P is the power generated at the time of exceeding f
m
P is the feeding power
f is the mains frequency
fstart is the freuqncy which starting power reduction
fstop is the frequency which has zero power
Gradient is the slop of power reduction
I G
NSTALLATION UIDE
A /R P
CTIVE EACTIVE OWER
36
C A F R
ONTROL ND AULT
start
T
IDE HROUGH