Siel SOLEIL 1F-TL2K, Инструкция по установке и эксплуатации

Страница: 111 / 232

IV352 Rev.02
Date Issue:
2012-10-27
Page 111 di 232 + FR
4. Power Management
The remote control has been carried out to fulfill the requirement of power management. External device
can communicate with inverter via a standard protocol, “MODBUS RTU (See SP104 Siel”. The network
operator is entitled to manage the power distribution in the following limited way.
4.1. Active power
In order to secure the network system stability or handle the excessive energy supply, the network
operator has the right to require a temporary limitation of the active power feed-in.
4.2. Active power reduction
Inverter has the capability of reducing active power with the minimum step of 1%P
n
, the adjustable range
is defined as 0% ~ 100%P
n
. In general, the settings of 100% / 60% / 30% / 0% are commonly used in
several power management provisions.
4.3. Frequency-dependent active power reduction
The principle for this requirement is that the energy oversupply can be recognized as gird frequency rise.
The frequency-dependent active power limitation will get a quick reaction while suddenly frequency
changes in the grid. If the frequency increases over a specific threshold, the active power has to be
reduced as a function of the grid frequency. Regarding the frequency set-point and the gradient of power
reducing, several implementations are carried out due to different safety regulations.The following graph
only describes the concept of frequency-dependent active power limitation.
(a) Characteristic of frequency-dependent active power reduction