LN: Phase angle measuring Name: PPAM
For a description of this LN, see IEC 61850-5. This function shall be used to model “out-ofstep” protection of generators.
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PPAM class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Str |
ACD |
Start |
|
M |
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Op |
ACT |
Operate |
T |
M |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
0 |
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Settings |
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StrVal |
ASG |
Start value |
|
о |
LN: Rotor protection Name: PRTR
For a description of this LN, see IEC 61850-5. Logical Node PRTR shall be used to represent a field short-circuit protection using the 6th harmonic (300 Hz). The protection is normally included in the excitation system.
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PRTR class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Str |
ACD |
Start |
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M |
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Op |
ACT |
Operate (trips both field CB and generator CB) |
T |
M |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
0 |
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Settings |
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StrVal |
ASG |
Start value |
|
0 |
LN: Protection scheme Name: PSCH
This LN shall be used to model the logic scheme for line protection function co-ordination. The protection scheme allows the exchange of the “operate” outputs of different protection functions and conditions for line protection schemes. It includes data objects for teleprotection if applicable. In this case, all appropriate data objects shall be subscribed.
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PSCH class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status Information |
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TxPrm |
ACT |
Permissive information to be transmitted to the other side (teleprotection permissive signal) |
T |
0 |
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TxBIk |
ACT |
Blocking information to be transmitted to the other side (teleprotection blocking signal) |
T |
о |
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TxTr |
ACT |
Direct trip information to be transmitted to the other side |
T |
0 |
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RxPrml |
ACT |
Activation information RxPrml received from the other side(s), for logging purposes (teleprotection permissive signal received) |
T |
0 |
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PSCH class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ C |
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RxBIkl |
ACT |
Activation information RxBIkl received from the other side(s), for logging purposes (teleprotection blocking signal received) |
T |
0 |
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RxTrl |
ACT |
Activation information RxTrl received from the other side(s), for logging purposes (direct trip signal received) |
|
0 |
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Op |
ACT |
Operate |
T |
M |
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EchoWei |
SPS |
TxPrm is being sent as echo signal or in case of weak end infeed |
T |
0 |
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EchoWeiOp |
SPS |
Additional indication that Op is the operate from the weak end infeed or echo function (typically with undervoltage control) |
T |
о |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
о |
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Settings |
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RxSrd |
ORG |
Source for activation information RxPrm or RxBIk, must refer to data of type ACT |
|
О |
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RxSrcTH |
ORG |
Source for activation information RxTr, must refer to data of type ACT |
|
о |
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OpDITmms |
ING |
Operate delay time |
|
О |
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CrdTmms |
ING |
Co-ordination timer for blocking scheme |
|
О |
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DurTmms |
ING |
Minimum duration of TxPerm in case of operate of PSCH |
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0 |
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UnBlkMod |
ENG |
Unblock function mode for scheme type |
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0 |
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UnBlkTmms |
ING |
Unblocking time |
|
О |
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WeiMod |
ENG |
Mode of weak end infeed function |
|
о |
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WeiTmms |
ING |
Co-ordination time for weak end infeed function |
|
0 |
LN: Sensitive directional earthfault Name: PSDE
For a general description of directed earth fault protection, see IEC 61850-5. This LN is used for directional earthfault handling in compensated and isolated networks. The use of “operate” is optional and depends both on protection philosophy and on instrument transformer capabilities. For compensated networks, this function is often called wattmetric directional earthfault. The very high accuracy needed for fault current measurement in compensated networks may require phase angle compensation. This shall be realised by the related LN TCTR.
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. PSDE class : |
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Data object name |
Common data class |
Explanation |
T |
М/О/ C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Str |
ACD |
Start |
|
M |
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Op |
ACT |
Operate |
T |
о |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
о |
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FltlndRs |
SPC |
Earthfault indication, resettable |
|
О |
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Settings |
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Ang |
ASG |
Angle between voltage (Uo) and current (/0) |
|
О |
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GndStr |
ASG |
Ground start value (3 Uo) |
|
о |
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GndOp |
ASG |
Ground operate value (3 l0) |
|
О |
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StrDITmms |
ING |
Start delay time |
|
О |
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OpDITmms |
ING |
Operate delay time |
|
О |
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DirMod |
ENG |
Directional mode |
|
О |
LN: Transient earth fault Name: PTEF
For a description of this LN, see IEC 61850-5. This LN shall be used to detect (“start”) transient earth fault in compensated networks.
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PTEF class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Str |
ACD |
Start (transient earth fault) |
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c |
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Op |
ACT |
Operate (transient earth fault) |
T |
c |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
о |
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FltlndRs |
SPC |
Eartbfault indication, resettable |
|
о |
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Settings |
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GndStr |
ASG |
Ground start value |
|
О |
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DirMod |
ENG |
Directional mode |
|
о |
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Condition C: at least one of the two status information (Str, Op) shall be used. |
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LN: Thyristor protection Name: PTHF
Logical node PTHF shall be used to represent a thyristor (thyristor valve) protection. In a power plant, this protection will typically be included in the excitation system.
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PTHF class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
|
LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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|
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Data objects |
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Status information |
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Str |
ACD |
Start |
|
M |
|
Op |
ACT |
Operate (trips both field CB and generator CB) |
T |
M |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
0 |
|
Settings |
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StrVal |
ASG |
Start value |
|
0 |
LN: Time overcurrent Name: PTOC
For a description of this LN, see IEC 61850-5 (LN PTOC). This LN shall also be used to model the directional time overcurrent (PDOC/IEEE device function number 67, from IEEE C37.2:1996). The Definite Time overcurrent (also PTOC/IEEE device function number 51, from IEEE C37.2:1996) shall be modelled by use of PTOC and selecting the related curve.
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PTOC class |
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Data object name |
Common data class |
Explanation |
T |
N1/0/ C |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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|
Status information |
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Str |
ACD |
Start |
|
M |
|
PTOC class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
|
Op |
ACT |
Operate |
T |
M |
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Controls |
||||
|
OpCntRs |
INC |
Resettable operation counter |
|
о |
|
Settings |
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TmACrv, |
CURVE |
Operating curve type |
|
0 |
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TmAChr33 |
CSG |
Multiline curve characteristic definition |
|
c |
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TmASt |
CSD |
Active curve characteristic |
|
о |
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StrVal |
ASG |
Start value |
|
о |
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TmMult |
ASG |
Time dial multiplier |
|
О |
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MinOpTmms |
ING |
Minimum operate time |
|
о |
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MaxOpTmms |
ING |
Maximum operate time |
|
о |
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OpDITmms |
ING |
Operate delay time |
|
о |
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TypRsCrv |
ENG |
Type of reset curve |
|
О |
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RsDITmms |
ING |
Reset delay time |
|
О |
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DirMod |
ENG |
Directional mode |
|
О |
|
NOTE TmAChr33 refers to the attribute TmACrv.setCharact = 33 etc. |
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LN: Overfrequency Name: PTOF
For a description of this LN, see IEC 61850-5 (LN PFRQ). This LN shall be used to model the overfrequency part of PFRQ. One instance shall be used per stage.
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PTOF class |
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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 |
||||
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Str |
ACD |
Start |
|
M |
|
Op |
ACT |
Operate |
T |
M |
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BlkV |
SPS |
Blocked because of voltage |
|
о |
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Controls |
||||
|
OpCntRs |
INC |
Resettable operation counter |
|
0 |
|
Settings |
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StrVal |
ASG |
Start value (frequency) |
|
0 |
|
BlkVal |
ASG |
Voltage block value |
|
0 |
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OpDITmms |
ING |
Operate delay time |
|
о |
|
RsDITmms |
ING |
Reset delay time |
|
О |
