Load Shedding - ABB SACE Tmax XT2 User Manual

35 - Load Shedding

Description The Load Shedding function allows you to manage malfunctions on systems that can work thanks
to the energy produced by renewable and local energy sources, in particular a lack of power,
e.g. due to a malfunction on the MV voltage side.
The function is available in two versions:
All the parameters and measurements of the function are available via Ekip Connect, while the
Trip unit allows setting and viewing some of them, as noted below.
Some function configuration parameters are available In the Settings - Load Shedding menu
Ekip Touch
Parameters (page 29).
Parameter
Enable
Version
Solar System
Present
Solar rated power
ATS
Generator power
Frequency slope
(NOTE)
FW Warning
Reconnection
Timeout
1SDH002031A1002 ECN000092998

Basic is supplied with all Ekip Touch Trip units

Adaptive can be purchased with the relative additional package that is available for all
Trip units equipped with the Measuring Measurement package, excluding Ekip M Touch
IMPORTANT: for full details see the Technical Catalog (see page 4) or the
function's White Paper (see page 12).
NOTE: it is advisable to first configure the parameters via Ekip Connect, and only then
operate on the Trip unit
Description
Enable/disable the function and the availability of the parameters in
the menu
Display of the function version, Basic or Adaptive
E
Defines if the microgrid includes a solar system (Off/On)
Available with Solar System Present = On, defines the rated power of
your solar system.
The value is expressed in kW, which can be set in a range:
100 kW .. 65535 kW with 1 kW steps
Defines if the system has an ATS system (Off/On)
Available with ATS = On, it defines the power received from the ATS
branch, which can be set in a range:
0 kW (. . . .) .. 10000 kW with 1 kW steps
Defines the variation of real-time frequency that triggers Load
shedding
The value is expressed in (Hz/s), which can be set in a range:
0.6 Hz/s .. 10 Hz/s with 0.2 Hz/s steps
Minimum frequency control threshold that activates Load shedding
(NOTE)
The value is expressed in an absolute value (Hertz), which can be set
in a range: 0.9 Fn .. 1.1 Fn with 0.001 Fn steps
Defines the time used by the Trip unit between the one load and the
next, following the re-closure of the main CB.
The value is expressed in (s), which can be set in a range:
10 s ..1800 s with 1 s steps
NOTE: Load shedding is activated if the control conditions defined by the Frequency
slope and FW Warning parameters are simultaneously present
Rev. B
NOTE: with the Basic version the only parameter available
is Reconnection Timeout
Default
OFF
--
Off
100 kW
Off
. . . .
0.6 Hz/s
1 Fn
10 s
SACE Tmax XT2 – XT4 | 122