OverexcLimX2
Class Description
Field voltage or current overexcitation limiter designed to protect the generator field of an AC machine with automatic excitation control from overheating due to prolonged overexcitation.
Attributes
| Name | Type | Description |
|---|---|---|
| efd1 | PU | Low voltage or current point on the inverse time characteristic (<i>EFD</i><i><sub>1</sub></i>). Typical value = 1,1. |
| efd2 | PU | Mid voltage or current point on the inverse time characteristic (<i>EFD</i><i><sub>2</sub></i>). Typical value = 1,2. |
| efd3 | PU | High voltage or current point on the inverse time characteristic (<i>EFD</i><i><sub>3</sub></i>). Typical value = 1,5. |
| efddes | PU | Desired field voltage if <i>m</i> = false or desired field current if <i>m </i>= true (<i>EFD</i><i><sub>DES</sub></i>). Typical value = 1. |
| efdrated | PU | Rated field voltage if m = false or rated field current if m = true (<i>EFD</i><i><sub>RATED</sub></i>). Typical value = 1,05. |
| kmx | PU | Gain (<i>K</i><i><sub>MX</sub></i>). Typical value = 0,002. |
| m | Boolean | (<i>m</i>). true = IFD limiting false = EFD limiting. |
| t1 | Seconds | Time to trip the exciter at the low voltage or current point on the inverse time characteristic (<i>TIME</i><i><sub>1</sub></i>) (>= 0). Typical value = 120. |
| t2 | Seconds | Time to trip the exciter at the mid voltage or current point on the inverse time characteristic (<i>TIME</i><i><sub>2</sub></i>) (>= 0). Typical value = 40. |
| t3 | Seconds | Time to trip the exciter at the high voltage or current point on the inverse time characteristic (<i>TIME</i><i><sub>3</sub></i>) (>= 0). Typical value = 15. |
| vlow | PU | Low voltage limit (<i>V</i><i><sub>LOW</sub></i>) (> 0). |
Relationships
Ancestors
Descendents
No descendent classes
Associations
None