Analog Signal Processing For Controlled Switching Application Ansgproc; Identification; Functionality - Hitachi Relion 650 Series Technical Manual

Section 14
Basic IED functions
While the IED is in test mode, the yellow START LED will flash and all functions are blocked. Any
function can be unblocked individually regarding functionality and event signalling.
Forcing of binary output signals is only possible when the IED is in test mode.
Most of the functions in the IED can individually be blocked by means of settings from the local HMI.
To enable these blockings the IED must be set in test mode (output ACTIVE is activated). When
leaving the test mode, and returning to normal operation, these blockings are disabled and
everything is set back to normal operation. All testing will be done with actually set and configured
parameter values within the IED. No settings will be changed, thus no mistakes are possible.
The blocked functions will still be blocked next time entering the test mode, if the blockings were not
reset. The released function will return to blocked state if test mode is set to off.
The blocking of a function concerns all output signals from the actual function, so no outputs will be
activated.
The TESTMODE function block might be used to automatically block functions when a test handle is
inserted in a test switch. A contact in the test switch (RTXP24 contact 29-30) can supply a binary
input which in turn is configured to the TESTMODE function block.
Each of the functions includes the blocking from the TESTMODE function block.
The functions can also be blocked from sending events over IEC 61850 station bus to prevent filling
station and SCADA databases with test events, for example during a commissioning or maintenance
test.
14.5 Analog signal processing for controlled switching
application ANSGPROC
14.5.1

Identification

Table 348: Function description
Function description
Analog signal processing for controlled switching
application
14.5.2

Functionality

To perform a controlled switching operation, signal plausibility, zero-crossing timestamps, half-cycle
time and amplitude need to be evaluated, against which the optimal point-on-wave control must be
achieved. This analog signal processing unit delivers the above requirements to be used by other
functions in the product.
ANSGPROC can take VT connection types and connected phases as setting and provide outputs for
both 1-phase and 3-phase voltage and current inputs. For 1-phase connection, it evaluates output of
unavailable phases considering the system is balanced. It also helps in passing loading and
grounding information to other functions including SSCPOW and ACBMSCBR.
382
When a binary input is used to set the IED in test mode and a parameter, that
requires restart of the application, is changed, the IED will re-enter test mode and all
functions will be blocked, also functions that were unblocked before the change.
During the re-entering to test mode, all functions will be temporarily unblocked for a
short time, which might lead to unwanted operations. This is only valid if the IED is
set in TEST mode by a binary input, not by local HMI.
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IEC 61850
identification
ANSGPROC
1MRK 511 557-UEN Rev. A
D0E7113T201305151403 v1
GUID-F12AC58D-7989-4806-8009-457BA5A2FD7B v1
GUID-D64B1AF3-1AA7-4C75-8C4E-CEAE7CAEE3B0 v1
GUID-BDB7C73B-C9F8-4B26-A462-8081E33F5E43 v1
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