Toshiba GR200 Series - (xv) MPAR logic - settings (TMPAR, ARC-MANOLK, MPAR-MODE)

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 460 -
(xv) MPAR logic – settings (TMPAR, ARC-MANOLK, MPAR-MODE)
The MPAR logic is consisted of SPAR scheme, TPAR scheme, and MPAR scheme (Figure
2.34-27); the Link judgment logic (Figure 2.34-28) select a scheme when reclosing the CB is
required.
In parallel lines, when power is able to flow in three-phases (i.e., [MPAR-MODE]=M3;
‘MPAR-LINK’ is judged), the MPAR scheme is selected in the MPAR logic; then, the CB will be
reclosed in the MPAR scheme. If the power does not flow in three-phases (i.e., ‘NO-MPAR-
LINK’), either the SPAR or the TPAR scheme is selected in the MPAR logic to reclose the CB.
The user can set the selection rule of the schemes using setting [ARC-MANOLK]=TPAR or
SPAR&TPAR. The behavers of the SPAR scheme and the TPAR scheme are the same as the
one of the SPAR logic and the TPAR logic—that have been discussed previously.
Note that the ARC function abandons to reclose the CB when setting [ARC-MANOLK]=FT
if ‘MPAR-LINK’ is not judged.
The dead times are required to set in the MPAR logic: [TSPAR1]/[TSPAR2],
[TTPAR1]/[TTPAR2], and [TMPAR1]/[TMPAR2]. Setting the [TRR1] and [TRR2] is also required.
Figure 2.34-25 shows the ARC operation in parallel lines (lines RQ and ST). Table 2.34-13
and Table 2.34-14 tabulates every operation result in the MPAR logic when faults occur in the
parallel lines. The user should understand that the selection of reclosing schemes in the MPAR
logic depends on the settings of [MPAR-MODE] and [ARC-MANOLK].
For the MPAR operation at Relay
(R)
, Relay
(Q)
, Relay
(S)
, and Relay
(T)
, the user should set
MPAR for the settings [ARC1-MODE] at respective relays. Additionally, the user should connect
Relay
(R)
with Relay
(S)
using the BO and BI circuits with wires. Similarly, the user should
connect Relay
(S)
with Relay
(T)
. Figure 2.34-26 illustrates the communication flow when the
MPAR operation is required at three-terminals.