Excitation System Model Data for Power System Transient Stability Studies
Data sheets for common standard excitation system models presented in alphabetical order.
| Excitation System Models | |
| ESAC1A | 1992 IEEE type AC1A excitation system model |
| ESAC2A | 1992 IEEE type AC2A excitation system model |
| ESAC3A | 1992 IEEE type AC3A excitation system model |
| ESAC4A | 1992 IEEE type AC4A excitation system model |
| ESAC5A | 1992 IEEE type AC5A excitation system model |
| ESAC6A | 1992 IEEE type AC6A excitation system model |
| ESST1A | 1992 IEEE type ST1A excitation system model |
| ESST2A | 1992 IEEE type ST2A excitation system model |
| ESST3A | 1992 IEEE type ST3A excitation system model |
| ESST4B | IEEE type ST4B potential or compounded source-controlled rectifier exciter |
| EX2000 | EX2000 Excitation System |
| EXAC1 | 1981 IEEE type AC1 excitation system model |
| EXAC1A | Modified type AC1 excitation system model |
| EXAC2 | 1981 IEEE type AC2 excitation system model |
| EXAC3 | 1981 IEEE type AC3 excitation system model |
| EXAC4 | 1981 IEEE type AC4 excitation system model |
| EXST1 | 1981 IEEE type ST1 excitation system model |
| EXST2 | 1981 IEEE type ST2 excitation system model |
| EXST2A | Modified 1981 IEEE type ST2 excitation system model |
| EXST3 | 1981 IEEE type ST3 excitation system model |
| IEEET1 | 1968 IEEE type 1 excitation system model |
| IEEET2 | 1968 IEEE type 2 excitation system model |
| IEEET3 | 1968 IEEE type 3 excitation system model |
| IEEET4 | 1968 IEEE type 4 excitation system model |
| IEEET5 | Modified 1968 IEEE type 4 excitation system model |
| SEXS | Simplified excitation system model |
| URST5T | IEEE proposed type ST5B excitation system |
IEEE Type Excitation System – ESAC1A
VS = VOTHSG + VOEL
IEEE Type AC2A Excitation System – ESAC2A
IEEE Type AC3A Excitation System – ESAC3A
IEEE Type AC4A Excitation System – ESAC4A
VS = VOTHSG + VOEL
IEEE Type AC5A Excitation System – ESAC5A
VS = VOTHSG + VUEL + VOEL
IEEE Type AC6A Excitation System – ESAC6A
IEEE Type ST1A Excitation System – ESST1A
Modified IEEE Type ST2A Excitation System – ESST2A
IEEE Type ST3A Excitation System – ESST3A
IEEE Type ST4B Potential or Compounded Source-Controlled Rectifier Exciter
The values are given in per unit unless the unit is shown. For field current references and inverse timing constants the value of the current is in per unit of the generator Air Gap Line base.
Reference Signal
To represent IEEE Type AC7B System, you need to set KVHZ = 0 and KRCC = 0, (to exclude Minimum Gate 2) and to set TR = 0 (to exclude the Voltage Transducer).
IEEE Type AC1 Excitation System – EXAC1
| Parameter | Value |
| TR (sec) | |
| TB (sec) | |
| TC (sec) | |
| KA | |
| TA (sec) | |
| VRMAX | |
| VRMIN | |
| TE > 0 (sec) | |
| KF | |
| TF > 0 (sec) | |
| KC | |
| KD | |
| KE | |
| E1 | |
| SE(E1) | |
| E2 | |
| SE(E2) |
VS = VOTHSG + VUEL + VOEL
IEEE Modified Type AC1 Excitation System – EXAC1A
VS = VOTHSG + VUEL + VOEL
IEEE Type AC2 Excitation System – EXAC2
VS = VOTHSG + VUEL + VOEL
IEEE Type AC3 Excitation System – EXAC3
VS = VOTHSG + VUEL + VOEL
IEEE Type AC4 Excitation System – EXAC4
VS = VOTHSG + VUEL + VOEL
IEEE Type ST1 Excitation System – EXST1
IEEE Type ST2 Excitation System – EXST2
VS = VOTHSG + VUEL + VOEL If KP = 0. and KI = 0., VB = 1.
Modified IEEE Type ST2 Excitation System – EXST2A
VS = VOTHSG + VUEL + VOEL If KP = 0. and KI = 0., VB = 1.
IEEE Type ST3 Excitation System – EXST3
VS = VOTHSG + VUEL + VOEL
IEEE Type 1 Excitation System – IEEET1
IEEE Type 2 Excitation System – IEEET2
IEEE Type 3 Excitation System – IEEET3
If A > 1, VB = 0
VS = VOTHSG + VUEL + VOEL
IEEE Type 4 Excitation System – IEEET4
Simplified Excitation SystemModified IEEE Type 4 Excitation System – IEEET5
Simplified Excitation System
VS = VOTHSG + VUEL + VOEL
IEEE Proposed Type ST5B Excitation System
