ETAP发电机启动

为薇薇

The etap Generator Start-Up module is a special feature of the ETAP Transient Stability
* J! H: W/ ]/ Y& Fprogram. The type of analysis provided by this module is particularly necessary for special
conditions such as when the connection to a power grid is lost and recovery of the power supply
  I$ W$ v( B, y5 uto critical loads is mandatory. Under these conditions, a cold stand-by generator is started up as
an emergency power source and progresses through acceleration and load acceptance stages
; r& v) v" ]" Q5 qbefore reaching its final state.
+ g( ]4 C) P1 D) }: kThis module will allow you to study the dynamic behavior of the starting generator (generator
frequency, speed, mechanical power, voltage, etc.) as loads are added during the start-up
' ?0 m6 p' }( h$ qtransient. It also allows you to observe dynamic behaviors of accelerating motors (both induction
6 }3 Z. l6 k, i8 }7 n' a; eand synchronous motors) as they are energized by the starting generator.
The following is a list of requirements and conditions that apply to the Generator Start-Up
5 _6 u, \4 c" n8 ^6 [3 Z, y) L/ Omodule:
1) This module is designed for the simulation of a single starting generator, which initially is
connected to a de-energized network. The starting generator should be the only source
" x6 |3 _) G$ ]4 i* P; r& X' Iin the network that is studied.
2) Only Subtransient Salient Pole model is supported for the Generator Start-Up module.
Thus, the starting generator needs to be modeled as a salient pole machine.
  R2 K) G" h  A' x+ P3) The exciter and governor models of the starting generator need to be modeled with
special capabilities and control mechanisms for the start-up process, including fuel flow
" W4 [5 }. @$ T3 o: Q7 ]: I- @at reduced speeds, exciter field flashing, etc. Note that standard exciter and governor
: P' |7 L- u) a8 y! I  @models are suitable to represent generator operations starting from the steady state,
thus they do not have these special capabilities.
' _" F4 O8 c8 ]8 o4 H7 a4) Currently, ETAP includes only two control models in its standard generator control model
library (exciter type ST1D and governor type HYDR) that can be used to simulate the
6 O8 c# M$ }7 \( O7 H$ K8 jeffects of generator start-up process. To simulate other types of exciter and governor
2 F7 h# q9 |. p% i' kmodels for generator start-up simulation, the User Defined Models (UDM) module needs
to be used.