Advertisement
provided by Toshiba is able to accept the actual operation time; hence, the setting
'CommTerm' is required in the Toshiba communication. The user should also note
that Off is set for the scheme switch [TCMD] as the default setting.
Station computer (SC)
Command "CB closed"
Process
Figure 11.3-27 Example of CB operation flow
Setting test mode
(vi)
With regard to the reception test for GOOSE subscribe information, the user can simulate a
bad condition passively by using both GOSNDBLK and GOSUBBLK functions†.
GOOSE sending block (GOSNDBLK)
For the test using the GOOSE sending block function (GOSNDBLK), the user can disable the
IED so that it does not send the GOOSE message. The GOSNDBLK function is useful when
there is a conflict in the communication with another active IED on sending a GOOSE signal.
To block the sending of the GOOSE message, the user should set On for scheme switch
[GOSNDBLK].
GOOSE receive block (GOSUBBLK)
Suppose the user wishes to simulate a bad reception condition with regard to the GOOSE
signal, the user can apply a setting that will prevent an IED from receiving the GOOSE
message from another IED using this test. The user can perform this test using the test setting
On for scheme switch [GOSUBBLK]. Consequently, the IED rejects the GOOSE messages from
other IEDs. The GOOSE receive block function (GOSUBBLK) is also useful for the validation
of switchgear interlocking determination.
†Note: The user may wish to perform bad reception tests from a remote terminal using
the GOSNDBLK function. However, carrying out the GOSNDBLK function at a
remote terminal may influence the overall operation of other IEDs, because
IED
Operate+(T)
Response
CommTerm+(T)
- 903 -
Target device (e.g. CB)
Command
Response
6F2T0207 (0.01)
Open
Closed
GRE200 (5,6)
Advertisement
