LCCH class |
||||
Data object name |
Common data class |
Explanation |
T |
N1/0/ C |
Fer |
INS |
Frame error rate on this channel; count of erroneous (or missed, in case of redundancy) messages for each 1 000 messages forwarded to the application. |
|
0 |
RedFer |
INS |
Frame error rate on redundant channel; count of missed messages on this channel for each 1 000 messages forwarded to the application. |
|
О |
Measured and metered values |
||||
RxCnt |
BCR |
Number of received messages |
|
0 |
RedRxCnt |
BCR |
Number of received messages on redundant channel |
|
О |
TxCnt |
BCR |
Number of sent messages |
|
О |
Settings |
||||
ApNam |
VSG |
Access point name to which this channel belongs; only needed, if more than one access point and more than one physical channel exist. |
|
О |
ChLivTms |
ING |
Timeout time for channel live supervision; default 5 s |
|
О |
NOTE If channel redundancy with duplicate remove is used, the number of lost messages can be calculated as 'messages forwarded to application as result of both channels - messages received on this channel'. In this case, the FER is calculated by counting the received messages per channel, until 1 000 messages are forwarded to the application, and then using above formula per channel. Observe that in PRP any message received for a wrong channel is also forwarded to the application. Thus a wrong connection of cables to ports can be detected, if Fer and RedFer have a value around 500 (1 000 messages with wrong channel identification forwarded to application, 500 messages with wrong channel identification received on each channel). Condition C: is mandatory, if channel redundancy is used. |
LN: GOOSE subscription Name: LGOS
The LN LGOS shall be used monitoring of GOOSE messages. There shall be one instance of LGOS per GOOSE subscription for a given GOOSE source. It allows for instance to diagnose the subscription state of a GOOSE message.
LGOS class |
||||
Data object name |
Common data class |
Explanation |
T |
N1/0/ C |
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- lnstance-!D according to IEC 61B50-7-2, Clause 22. |
|
|
Data objects |
||||
Status information |
||||
NdsCom |
SPS |
Subscription needs commissioning |
|
0 |
St |
SPS |
Status of the subscription (True = active, False=not active) |
|
N1 |
SimSt |
SPS |
Status showing that really Sim messages are received and accepted |
|
О |
LastStNum |
INS |
Last state number received |
|
О |
ConfRevNum |
INS |
Expected configuration revision number |
|
О |
Settings |
||||
GoCBRef |
ORG |
Reference to the subscribed GOOSE control block |
|
О |
LN: Sampled value subscription Name: LSVS
The LN LSVS shall be used for diagnose and monitoring supervision of sampled value messages. There shall be one instance of LSVS per SV subscription for a given server. It allows for instance to diagnose the subscription of a SV message (status of subscription).
LSVS class |
||||
Data object name |
Common data class |
Explanation |
T |
MIDI c |
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
Data objects |
||||
Status information |
||||
NdsCom |
SPS |
Subscription needs commissioning |
|
0 |
St |
SPS |
Status of the subscription (True = active, False = not active) |
|
0 |
SimSt |
SPS |
Status showing that really Sim messages are received and accepted |
|
0 |
LastStNum |
INS |
Last state number received |
|
0 |
ConfRevNum |
INS |
Expected configuration revision number |
|
0 |
Settings |
||||
SvCBRef |
ORG |
Reference to the subscribed SV control block |
|
0 |
LN: Time management Name: LTIM
The LN LTIM shall be use for diverse configurations regarding the local time of an IED.
LTIM class |
||||
Data object name |
Common data class |
Explanation |
T |
М/О/ c |
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
Data objects |
||||
Status information |
||||
TmDT |
SPS |
indicating if for this location daylight saving time is in effect now |
|
M |
Settings |
||||
TmOfsTmm |
ING |
Offset of local time from UTC in minutes |
|
M |
TmUseDT |
SPG |
Flag indicating if this location is using daylight saving time |
|
M |
TmChgDayTm |
TSG |
Local time of next change to daylight saving time |
|
о |
TmChgStdTm |
TSG |
Local time of next change to standard time |
|
0 |
StrWeekDay |
ENG |
Day of the start of the local week for statistical calculation (Monday (default) I Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday ) |
|
0 |
LN: Time master supervision Name: LTMS
The LN LTMS shall be used for the configuration and supervision of the time synchronization function in an IED.
LTMS class |
||||
Data object name |
Common data class |
Explanation |
T |
М/О/ c |
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
Data objects |
||||
Status information |
||||
TmAcc |
INS |
Number of significant bits in the Fraction Of Second in the time accuracy part of the time stamp. See IEC 61850-7-2. |
|
0 |
TmSrc |
VSS |
Current time source |
|
M |
TmSyn |
ENS |
Time synchronized according to IEC 61850-9-2 |
|
0 |
TmChSU |
SPS |
Time channel status (up/down) |
|
0 |
Settings |
||||
TmSrcSetl |
VSG |
Time source setting (“1588” in case the time source is a IEEE 1588 source or-dotted IP-address) |
|
0 |
LN: Service tracking Name: LTRK
The LN LTRK allows to track service parameters. With this tracking, service parameters will stay visible after the execution of service. For this purpose, common data classes are needed which contain the parameters of the services according to IEC 61850-7-2.
LTRK class |
||||
Data object name |
Common data class |
Explanation |
T |
М/О/ c |
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
Data objects |
||||
Control and access service tracking |
||||
SpcTrk |
CTS |
Control service tracking for controllable single point |
|
о |
DpcTrk |
CTS |
Control service tracking for controllable double point |
|
о |
IncTrk |
CTS |
Control service tracking for controllable Integer |
|
о |
EncTrkl |
CTS |
Control service tracking for enumerated controllable |
|
о |
ApcFTrk |
CTS |
Control service tracking for controllable analogue set point with float command |
|
О |
ApcIntTrk |
CTS |
Control service tracking for controllable analogue set point with Integer command |
|
О |
BscTrk |
CTS |
Control service tracking for binary controlled step position information |
|
О |
IscTrk |
CTS |
Control service tracking for integer controlled step position information |
|
О |
BacTrk |
CTS |
Control service tracking for binary controlled analogue process value |
|
О |
GenTrk |
CST |
Common service tracking for all services for which no specific tracking data exists |
|
о |
UrcbTrk |
UTS |
Access service tracking for unbuffered report control block |
|
О |
BrcbTrk |
BTS |
Access service tracking for buffered report control block |
|
О |
LocbT rk |
LTS |
Access service tracking for log control block |
|
О |
GocbTrk |
GTS |
Access service tracking for goose control block |
|
О |
MsvcbTrk |
MTS |
Access service tracking for multicast sampled values control block |
|
О |
UsvcbTrk |
NTS |
Access service tracking for unicast sampled values control block |
|
О |
SgcbTrk |
STS |
Access service tracking for setting group control block |
|
о |
NOTE The common data classes for the data objects in LTRK are specified in IEC 61850-7-2. |
Logical nodes for automatic control LN Group: A
Modelling remarks
Table 3 - Relation between IEC 61850-5 and IEC 61850-7-4 for automatic control LNs
Functionality |
Defined in IEC 61850-5 by LN |
Modelled in IEC 61850-7-4 by LN |
Comments |
Zero voltage tripping |
AZVT |
PTUV |
The start value has to discriminate between live and dead. The delay time has to be reasonably long to discriminate between a transient voltage zero or a permanent switched off line. |
Automatic neutral (starpoint) control |
ANCR |
ANCR ARIS |
Automatic control of suppression (Petersen) coil Automatic wattmetric increase with thermal supervision |
LN: Neutral current regulator Name: ANCR
For a description of this LN, see IEC 61850-5. This LN shall be used for regulation of suppression coils (ASC / Petersen coil) as tap coils and plunger core coils.
ANCR class |
||||
Data object name |
Common data class |
Explanation |
T |
M/O/C |
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
Data objects |
||||
Status information |
||||
LocKey |
SPS |
Local or remote key |
|
0 |
Loc |
SPS |
Local control behaviour |
|
M |
HiColPos |
INS |
High coil position |
|
о |
LoColPos |
INS |
Low coil position |
|
о |
ColOpR |
SPS |
Change coil position rise |
|
О |
ColOpL |
SPS |
Change coil position lower |
|
о |
ColChgOp |
SPS |
Change coil position in operation |
|
о |
StFixCol |
SPS |
Status of external fixcoil (True - fixcoil is connected, False - not connected) |
|
О |
StCIcTun |
ENS |
Result of tuning: not tuned , tuned, tuned but not compensated, Umax,Umax_nC(Umax- but not compensated), Umax_not compensated due to U continuous limitation |
|
О |
PotAlm |
SPS |
Potentiometer alarm |
|
О |
MotAlm |
SPS |
Motor drive alarm due to no movement |
|
о |
MotWrn |
SPS |
Motor for Petersen coil operating time exceeded |
|
О |
ClcSeqWrn |
SPS |
Number of calculation sequence exceeded in automatic/manual mode |
|
О |
Measured and metered values |
||||
ColPosA |
MV |
Coil position (usually as current in Ampere) |
|
о |
AResoPt |
MV |
Current at the resonance-point |
|
О |
AWatt |
MV |
Wattmetric part of the residual current at the fault location |
|
О |
ADetun |
MV |
Detuning due to the actual coil position |
|
О |
Damp |
MV |
Damping of the network |
|
О |
Capaclmb |
MV |
Capacitive imbalance of the network |
|
О |
VolResoPt |
CMV |
Value of the voltage at the resonance point |
|
О |
NeutVol |
CMV |
Neutral to ground voltage |
|
о |
Controls |
||||
OpCntRs |
INC |
Resettable operation counter |
|
О |
LocSta |
SPC |
Switching authority at station level |
|
О |
TapChg |
BSC |
Change tap position (stop, higher, lower) |
|
С1 |
ColTapPos |
ISC |
Move coil to specified discrete coil position |
|
С1 |
ColPos |
APC |
Move coil to specified continuous coil position |
|
С1 |
RCol |
SPC |
Raise plunger coil position |
|
м |
LCol ' |
SPC |
Lower plunger coil position |
|
м |
Auto |
SPC |
Automatic / manual operation |
|
м |
StrCIc |
SPC |
Start calculation sequence |
|
О |
ParOp |
SPC |
Parallel/lndependent operation (True - parallel, False - independent) |
|
О |
FixCol |
APC |
Size of external fix coil |
|
О |
Settings |
||||
ParColMod |
ENG |
Mode of parallel operation of Petersen coil (Master/ Slave | Master/ Slave with fixed slave coil position | Master/ Slave with variable slave coil position I Parallel operation without communication) |
|
м |
ParMod |
ENG |
Set current regulator mode during control (master, slave, independent) |
|
О |