
55
6
F
2
S
0
8
5
0
Va = (Ia
−
I0)Z1 + I0
×
Z0 + Iom
×
Zom (1)
where,
Va: Phase “a” voltage
Ia: Phase “a” current
I0: Zero-sequence current of the protected line
I0m: Zero-sequence current of the parallel line
Z1: Positive-sequence impedance (Z1 = R1 + jX1)
Z0: Zero-sequence impedance (Z0 = R0 + jX0)
Z0m: Zero-sequence mutual impedance (Zom = Rom + jXom)
Equation (1) can be written as follows:
Va = (R1 + jX1)Ia +
{
(R0
−
R1) + j(X0
−
X1)
}
I0 + (Rom + jXom)Iom
=
R1(Ia +
R0
−
R1
R1
I0 +
Rom
R1
Iom) + jX1(Ia +
X0
−
X1
X1
I0 +
Xom
X1
Iom)
In the GRL100, the voltage is compensated independently for resistance and reactance
components as shown in equation (2) in stead of general equation (1).
VaR + jVaX =
{
R1( IaR +
Krs
100
−
1
3
×
3I0R +
Krm
100
3
×
3IomR )
−
X1( IaX +
Kxs
100
−
1
3
×
3I0X +
Kxm
100
3
×
3IomX )
}
+ j
{
R1( IaX +
Krs
100
−
1
3
×
3I0X +
Krm
100
3
×
3IomX )
+ X1( IaR +
Kxs
100
−
1
3
×
3I0R +
Kxm
100
3
×
3IomR )
}
(2)
where,
Kxs: compensation factor (Kxs = X0/X1
×
100)
Krs: compensation factor (Krs = R0/R1
×
100)
Kxm: compensation factor (Kxm = Xom/X1
×
100)
Krm: compensation factor (Krm = Rom/R1
×
100)
X: imaginary part of the measured impedance
R: real part of the measured impedance
VaX: imaginary part of phase “a” voltage
VaR: real part of phase “a” voltage
IaX: imaginary part of phase “a” current
IaR: real part of phase “a” current
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Содержание GRL100-701B
Страница 288: ... 287 6 F 2 S 0 8 5 0 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 290: ... 289 6 F 2 S 0 8 5 0 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 324: ... 323 6 F 2 S 0 8 5 0 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 329: ... 328 6 F 2 S 0 8 5 0 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 339: ... 338 6 F 2 S 0 8 5 0 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 348: ... 347 6 F 2 S 0 8 5 0 Appendix G Typical External Connection 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 351: ... 350 6 F 2 S 0 8 5 0 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 381: ... 380 6 F 2 S 0 8 5 0 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 388: ... 387 6 F 2 S 0 8 5 0 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 394: ... 393 6 F 2 S 0 8 5 0 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 410: ... 409 6 F 2 S 0 8 5 0 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 413: ... 412 6 F 2 S 0 8 5 0 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 414: ... 413 6 F 2 S 0 8 5 0 Appendix M Multi phase Autoreclose 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 417: ... 416 6 F 2 S 0 8 5 0 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 418: ... 417 6 F 2 S 0 8 5 0 Appendix N 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 424: ... 423 6 F 2 S 0 8 5 0 Appendix O Example of Setting 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 5 0 Appendix Q IEC60870 5 103 Interoperability 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 453: ... 452 6 F 2 S 0 8 5 0 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 454: ... 453 6 F 2 S 0 8 5 0 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 457: ... 456 6 F 2 S 0 8 5 0 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 464: ... 463 6 F 2 S 0 8 5 0 Appendix T PLC Setting Sample 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 468: ... 467 6 F 2 S 0 8 5 0 Appendix U 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 473: ...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 ...