Branch Model: TIOCRSRF
AutoCorrection Properties
Following checks and corrections are applied during Validation and AutoCorrection.
- CurveType: Error is created if curve type is not 1 (for IEEE), 2 (for IEC), or 3 (for IAC).
Mult represents the user-specified value Minimum time constant size as multiple of time step option on the Validation page of the Transient Stability Dialog
TimeStep represents the integration time step being used as described on TimeStep
The model is the same as the TIOCRS model
The difference is that the model allow for reclosing of the branch. The TIOCRSRF have two new parameters:
-TransferReclose: It is for the reclosing time (seconds) of the transfer branches. If time is 0 it will not reclose.
-ReclosewithFault: Reclose With Fauilt Not Cleared? 1 means a YES (Default), 0 means NO
Parameters:
| RelaySlot | Relay Slot [1 or 2] |
| Monitor | Monitor=0, and trip=1 |
| CurveType | Curve Type. Determines the function used to describe Relay Time Inverse Curve. Options are 1 = IEEE C37.113 standard; 2 = IEC 255-4 and British BS142; 3 = IAC GE Type |
| ThresholdCurrent | Threshold current, Amps |
| BreakerTime | Circuit Breaker Time in Seconds |
| Tdm | Time Dial Multiplier. All times specified will be treated as this multiple larger |
| ResetTime | Zero Current Reset time in seconds. Let M = (I/Ithres). Then Time To Reset = Tdm*{ResetTime/(1-M^2)} |
| p | Curve Exponent Parameter. See more information with paramters A, B, C, D, E |
| A | Curve Coefficient A. Usage depends on Curve Type. Let M = (I/Ithres). Then IEEE curves use Tdm*{B + A/(M^p - 1)}; IEC curves use Tdm*{A/(M^p - 1)} |
| B | Curve Coefficient B. Usage depends on Curve Type. Let M = (I/Ithres). Then IEEE curves use Tdm*{B + A/(M^p - 1)}; IEC curves use Tdm*{A/(M^p - 1)} |
| C | Curve Coefficient C. Usage depends on Curve Type. Let M = (I/Ithres). Then IEEE curves use Tdm*{B + A/(M^p - 1)}; IEC curves use Tdm*{A/(M^p - 1)}; IAC curves use Tdm*{A + B/(M-C) + D/[(M-C)^2] + E/[(M-C)^3]} |
| D | Curve Coefficient D. Usage depends on Curve Type. Let M = (I/Ithres). Then IEEE curves use Tdm*{B + A/(M^p - 1)}; IEC curves use Tdm*{A/(M^p - 1)}; IAC curves use Tdm*{A + B/(M-C) + D/[(M-C)^2] + E/[(M-C)^3]} |
| E | Curve Coefficient E. Usage depends on Curve Type. Let M = (I/Ithres). Then IEEE curves use Tdm*{B + A/(M^p - 1)}; IEC curves use Tdm*{A/(M^p - 1)}; IAC curves use Tdm*{A + B/(M-C) + D/[(M-C)^2] + E/[(M-C)^3]} |
| t3trip | 0 means trip monitor winding; 1 means trip whole 3 winding Xfmr |
| direct | 0 means no directional element; 1 means directional element AND Direction will be based upon current leaving the FROM end of the branch; 2 means directional element AND Direction will be based upon current leaving the TO end of the branch |
| TransferReclose | Transfer reclose, cycles |
| RecloseWithFault | Reclose With Fauilt Not Cleared? 1 means a YES (Default), 0 means NO |