ABB PVS800 Manuel D'exploitation page 5

1
Update notice
The notice concerns the following PVS800 central
inverters firmware manuals:
Code Revision Language
3AUA0000058422 A
3AUA0000094311 A
3AUA0000097081 A
3AUA0000094312 A
3AUA0000094313 A
Program features
Anti-islanding
Anti-islanding is used to prevent an island situation in an electrical network. An island in electrical
network is a situation in which a generator is powering a part of the network even though power from
the electrical utility network has been cut off. Islanding can be dangerous to people working with the
network and not realizing that the circuit is still powered. For that reason distributed power generators
must detect islanding and immediately stop producing power to the network.
The PVS800 supports anti-islanding in two different modes. Passive anti-islanding attempts to detect
transient changes on the network frequency and use that information to decide whether the network
is present. The island situation is theoretically possible if the load within the network matches the
feeding power when there is a network failure. The above-mentioned situation cannot be detected
only with the passive anti-island monitoring. In addition to passive anti-islanding, the reactive power
variation (RPV) can be used to verify the existence of the electrical network. In the RPV mode a small
pulse type signal is injected to the network and the passive method is used to monitor rate changes
in the network frequency.
By default anti-islanding does not work with LVRT. If both functions are needed, contact ABB.
Settings
Inverter control program: Parameter group
Update notice
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45 ANTI-ISLANDING.
Code: 3AUA0000112613 Rev A
Valid: from 2011-12-02 until the release of Rev B of the
manual. Updates apply to master control program version
GSXR7340 and inverter control program version ISXR7340.
Contents: This document describes the enhanced functions
of PVS800 central inverters including program feature
descriptions, new parameters and updates for fault and
warning messages.
The following new functions are described below: active
power limitation based on grid frequency, active power ramp-
up after a grid fault, anti-islanding, grid monitoring for voltage
and frequency, grid support, low voltage ride-through
(LVRT), operation with a 1000 V DC voltage (+G411).
Note: Every section in this update notice is new content for
the manual.