Woodward HighPROtec MCDLV4, Manual

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Protective Elements
Protective Elements
Interconnection
Various state-of-the-art protective elements have been developed for the
HighPROTEC. Due to the increasing role
of distributed energy resources interconnection protection becomes more and more important. A new, sophisticated
protection function package covers all protective elements for interconnection applications. This package can be
found within menu [Interconnection].
These protective elements can be used flexible. They can be adapted easily by parameter settings to various
international and local grid codes.
In the following an overview is given on this menu. Please refer for details on these protective elements to the
corresponding chapters.
The Interconnection menu comprises:
A submenu with mains-decoupling elements. Depending on the grid codes that are to be taken into account
various mains decoupling elements are mandatory (or forbidden). Within this menu, you have access to the
following mains decoupling elements:
ROCOF (df/dt) (please refer to chapter freqeuncy protection). This element is consistent with a
Frequency Protection element, that is set to „df/dt“ within the Device Planning.
Vector shift (delta phi) (please refer to chapter freqeuncy protection). This element is consistent with
a Frequency Protection element, that is set to „delta phi“ within the Device Planning.
Pr (please refer to chapter power protection). This element is consistent with a Power Protection
element, that is set to „Pr>“ within the Device Planning.
Qr (please refer to chapter power protection). This element is consistent with a Power Protection
element, that is set to „Qr>“ within the Device Planning.
Intertripping (please refer to chapter intertripping).
A submenu for Low Voltage Ride Through (please refer to the LVRT chapter).
A submenu for Q->&V<-Protection (please refer to the Q->&V< chapter).
A submenu for synchronization (please refer to the synchronization chapter).
The device offers also among other things for low voltage systems a
voltage quality supervision based on the ten minutes sliding mean square
measurement. (please refer to chapter Voltage Protection).
596 MCDLV4 DOK-HB-MCDLV4-2E