6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 701 -
Software interlock function (ILK)
Devices must be controlled in accordance with the prevailing operational condition of the
electric power system. If a device does not act or behave in accordance with the operational
circumstances, inappropriate device control can result in outages or fatal incidents for the
network. In order to avoid such circumstances, software interlock (ILK) function is provided
that is able to examine the current operational situation and determine whether to permit the
control of a particular device.
When using the ILK function, an interlock-check formula is required. The interlock-check
formula examines the operational conditions for all devices, and is stored in the ILK database.
The ILK function provides an output signal “OK/NG decision information”; the “OK/NG
decision information” is transferred to the control functions†, which control the external
devices. Following which, the control functions can commence with the control of the selected
devices in response to the respective “OK/NG decision information”.
†Note: Details of SPOS, DPSY, and TPOS features are discussed separately elsewhere in
the instruction manual under the Chapter
Control and monitoring applications.
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Note:
The implementation of particular features is dependent upon the selection of
hardware and the configuration of functions. Several IED models do not support certain
features. To determine whether a particular feature has been implemented within an IED,
identify the IED ordering number; and check the order number for the “G&T position” whilst
referring to the comparison table below. For more information, see
Appendix: Ordering
.
Table 4.7-1 Comparative table in respective ordering numbers
Sec.
Feature
Ordering No. at “G&T”
31
32
–
Main features
NA
✓
✓
: Applicable NA: Not applicable
Содержание GR 200 Series
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