Woodward easYgen-3000XT Series, Руководство пользователя

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ID Parameter CL Setting range
[Default]
Description
possible to switch-off the test
mode manually.
The test mode switches off
automatically after one hour since
having turned on or after
switching on the operation
magnet (engine should start).
4.5.3.4.1 Setup Grid Code AR-–4105
General notes
The German Grid Code VDE-AR-N 4105 instructs the handling of electrical energy sources
running parallel to the low voltage grid. This rule has an impact with some items on the
genset control. A more detailed description relating to that VDE rule is done through the
separated application note “easYgen-3000_VDE-AR-N 4105”.
Here are some functions which have to be covered according to the 4105 rule:
• The mains decoupling is executed through following monitors: •
◦ Mains under voltage V< ◦
◦ Mains over voltage V> ◦
◦ Mains under frequency f< ◦
◦ Mains over frequency f> ◦
• Recognizing isolation operation (other decoupling argument) •
◦ Phase shift OR ◦
◦ df/dt ◦
• Button for Testing the Decoupling Facility •
• Single-failure-security including self-monitoring •
The VDE-AR-N 4105 demands a Single-failure-proof of the mains decoupling function. That
means that the decoupling of the generator from the mains must be always ensured,
even if a single element in the system fails. So the system must contain two circuit
breakers with two independent monitoring functions acting individually on each breaker.
From the perspective of the network provider that rule pursuits the mains protection but
not the availability of the electrical source, so in case of doubt the generator should be
decoupled from mains.
Woodward solves this requirement with the use of a minimum of two units acting as a
system (for example two easYgens or an easYgen and an LS-5 with 4105 functionality).
The system allows incorporating more units, so that the availability of the generator can
still be increased.
The demanded two breakers in series are realized through the use of a GCB and a MCB. If
only a GCB is available, the customer must install another circuit breaker in addition.
An important item of the VDE-AR-N 4105 is the Single-Failure-Diagnostic, at which a
minimum of two units exchange their measurement data and settings over
494 easYgen-3000XT Series B37574
4 Configuration
4.5.3.4.1 Setup Grid Code AR-–4105
Released