UnderexcLimIEEE2
Class Description
Type UEL2 underexcitation limiter which has either a straight-line or multi-segment characteristic when plotted in terms of machine reactive power output vs. real power output. Reference: IEEE UEL2 421.5-2005, 10.2 (limit characteristic lookup table shown in Figure 10.4 (p 32)).
Attributes
| Name | Type | Description |
|---|---|---|
| k1 | Float | UEL terminal voltage exponent applied to real power input to UEL limit look-up table (<i>k1</i>). Typical value = 2. |
| k2 | Float | UEL terminal voltage exponent applied to reactive power output from UEL limit look-up table (<i>k2</i>). Typical value = 2. |
| kfb | PU | Gain associated with optional integrator feedback input signal to UEL (<i>K</i><i><sub>FB</sub></i>). Typical value = 0. |
| kuf | PU | UEL excitation system stabilizer gain (<i>K</i><i><sub>UF</sub></i>). Typical value = 0. |
| kui | PU | UEL integral gain (<i>K</i><i><sub>UI</sub></i>). Typical value = 0,5. |
| kul | PU | UEL proportional gain (<i>K</i><i><sub>UL</sub></i>). Typical value = 0,8. |
| p0 | PU | Real power values for endpoints (<i>P</i><i><sub>0</sub></i>). Typical value = 0. |
| p1 | PU | Real power values for endpoints (<i>P</i><i><sub>1</sub></i>). Typical value = 0,3. |
| p10 | PU | Real power values for endpoints (<i>P</i><i><sub>10</sub></i>). |
| p2 | PU | Real power values for endpoints (<i>P</i><i><sub>2</sub></i>). Typical value = 0,6. |
| p3 | PU | Real power values for endpoints (<i>P</i><i><sub>3</sub></i>). Typical value = 0,9. |
| p4 | PU | Real power values for endpoints (<i>P</i><i><sub>4</sub></i>). Typical value = 1,02. |
| p5 | PU | Real power values for endpoints (<i>P</i><i><sub>5</sub></i>). |
| p6 | PU | Real power values for endpoints (<i>P</i><i><sub>6</sub></i>). |
| p7 | PU | Real power values for endpoints (<i>P</i><i><sub>7</sub></i>). |
| p8 | PU | Real power values for endpoints (<i>P</i><i><sub>8</sub></i>). |
| p9 | PU | Real power values for endpoints (<i>P</i><i><sub>9</sub></i>). |
| q0 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>0</sub></i>). Typical value = -0,31. |
| q1 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>1</sub></i>). Typical value = -0,31. |
| q10 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>10</sub></i>). |
| q2 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>2</sub></i>). Typical value = -0,28. |
| q3 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>3</sub></i>). Typical value = -0,21. |
| q4 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>4</sub></i>). Typical value = 0. |
| q5 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>5</sub></i>). |
| q6 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>6</sub></i>). |
| q7 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>7</sub></i>). |
| q8 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>8</sub></i>). |
| q9 | PU | Reactive power values for endpoints (<i>Q</i><i><sub>9</sub></i>). |
| tu1 | Seconds | UEL lead time constant (<i>T</i><i><sub>U1</sub></i>) (>= 0). Typical value = 0. |
| tu2 | Seconds | UEL lag time constant (<i>T</i><i><sub>U2</sub></i>) (>= 0). Typical value = 0. |
| tu3 | Seconds | UEL lead time constant (<i>T</i><i><sub>U3</sub></i>) (>= 0). Typical value = 0. |
| tu4 | Seconds | UEL lag time constant (<i>T</i><i><sub>U4</sub></i>) (>= 0). Typical value = 0. |
| tul | Seconds | Time constant associated with optional integrator feedback input signal to UEL (<i>T</i><i><sub>UL</sub></i>) (>= 0). Typical value = 0. |
| tup | Seconds | Real power filter time constant (<i>T</i><i><sub>UP</sub></i>) (>= 0). Typical value = 5. |
| tuq | Seconds | Reactive power filter time constant (<i>T</i><i><sub>UQ</sub></i>) (>= 0). Typical value = 0. |
| tuv | Seconds | Voltage filter time constant (<i>T</i><i><sub>UV</sub></i>) (>= 0). Typical value = 5. |
| vuimax | PU | UEL integrator output maximum limit (<i>V</i><i><sub>UIMAX</sub></i>) (> UnderexcLimIEEE2.vuimin). Typical value = 0,25. |
| vuimin | PU | UEL integrator output minimum limit (<i>V</i><i><sub>UIMIN</sub></i>) (< UnderexcLimIEEE2.vuimax). Typical value = 0. |
| vulmax | PU | UEL output maximum limit (<i>V</i><i><sub>ULMAX</sub></i>) (> UnderexcLimIEEE2.vulmin). Typical value = 0,25. |
| vulmin | PU | UEL output minimum limit (<i>V</i><i><sub>ULMIN</sub></i>) (< UnderexcLimIEEE2.vulmax). Typical value = 0. |
Relationships
Ancestors
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