
115
6
F
2
S
0
8
3
4
PSBZ
PSBZ
PSBZ
0
PSBZ
PSBIN
PSBOUT
R
X
Z3
Z4
ZR2
Figure 2.6.1.4 Power Swing Blocking Element
Mho element
The characteristic of the mho element is obtained by comparing the phases between signals S1 and
S2. If the angle between these signals is 90
°
or more, it means that the fault is within the mho
characteristic, and the mho element will operate.
S1 = V
−
IZs
S2 = Vp
where,
V = fault voltage
I = fault current
Zs = zone reach setting
Vp = polarizing voltage
Figure 2.6.1.5 is a voltage diagram, which shows that the mho characteristic is obtained by the
phase comparison if V and Vp are in-phase.
The mho characteristic on the impedance plane is obtained by dividing the voltage in Figure
2.6.1.5 by current I.
Figure 2.6.1.5 Mho Element
Both the phase fault mho element and earth fault mho element of the GRZ100 employ a dual
R
V
IZs
S2 = Vp
S1 = V
−
X
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Содержание GRZ100-211B
Страница 284: ... 283 6 F 2 S 0 8 3 4 Appendix A Block Diagram w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 288: ... 287 6 F 2 S 0 8 3 4 Appendix B Signal List w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 323: ... 322 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 324: ... 323 6 F 2 S 0 8 3 4 Appendix C Variable Timer List w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 343: ... 342 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 352: ... 351 6 F 2 S 0 8 3 4 Appendix G External Connections w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 383: ... 382 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 390: ... 389 6 F 2 S 0 8 3 4 Appendix J Return Repair Form w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 395: ... 394 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 396: ... 395 6 F 2 S 0 8 3 4 Appendix K Technical Data w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 408: ... 407 6 F 2 S 0 8 3 4 Appendix L Symbols Used in Scheme Logic w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 411: ... 410 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 412: ... 411 6 F 2 S 0 8 3 4 Appendix M Example of Setting Calculation w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 423: ... 422 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 440: ... 439 6 F 2 S 0 8 3 4 Appendix P Data Transmission Format w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 443: ... 442 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 448: ... 447 6 F 2 S 0 8 3 4 Appendix R Inverse Time Characteristics w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 451: ... 450 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 459: ... 458 6 F 2 S 0 8 3 4 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 460: ... 459 6 F 2 S 0 8 3 4 Appendix T Ordering w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 463: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...