在一份资料中看到model搭建完成后可以不连接其他设备,进行开环测试,操作如下: ) @% v# A4 z% Y9 ^1 ]. N1 A/ k; J1 B h! B# \: V8 ?5 D8 o
Verify the behaviour of the model by an open-loop test, i.e. the controller is not connected to any % u9 ?3 e7 m# F; X' ]9 Bother element (synchronous generator) in the grid:! u3 o& m( Y( ?% C% X1 v$ y* p- |
4 b9 d: W& d6 @6 U0 k6 _1 m& ]Open-Loop Response: / | ]( k0 c1 F2 v$ @0 m! K 1 Test the model with a step response to the reference voltage “usetp” (open-loop-test) [17].3 i, Q+ @* \. c; \8 I+ r' W
 2 Define a variable set to monitor for the VCO element and visualize the results of the simulated step response + k& V! Y: c& d" ^2 x' Y. |* `3 ?2 R- U
上面第一步的具体操作过程: 3 f: p/ Q6 U+ n0 \6 i#17: Open-Loop Test1 l% f y# x( @4 R0 R
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 1 Open the event list ( ) and use the “New Object” button to insert a “Set Parameter(EvtPara)” event6 T# ^/ H7 X+ K+ z @- e' h% W
 2 Select the AVR controller for the element.' e9 L% _+ _" k F6 z2 k: A- k
 3 Insert the name of the variable ‘usetp’ and the new value for this variable (=0.9).2 N8 B1 ]2 k% h5 _, V
补充:2 Define a variable set to monitor for the VCO element and visualize the results of the simulated step response: T/ u( A1 M; ]0 z. i t
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这一步也完成了,问:接下来怎么做?是执行计算初始条件然后开始仿真吗?