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: ! `# L) }4 I6 H2 L) f. b+ \6 x , H2 b9 c& [- r! ~9 d' U Verify the behaviour of the model by an open-loop test, i.e. the controller is not connected to any 5 f$ V# g; g9 b" l- ?other element (synchronous generator) in the grid:4 j3 i4 U# B8 O C8 S
9 F+ w. G- n0 Q3 r Open-Loop Response: ; O$ S* |9 \8 X5 y4 s. B) u 1 Test the model with a step response to the reference voltage “usetp” (open-loop-test) [17].* D8 T' ~$ r3 h K
 2 Define a variable set to monitor for the VCO element and visualize the results of the simulated step response4 H+ s- s" f& w8 b a* u7 j
3 g0 J6 G% p. ^- Q; s上面第一步的具体操作过程:5 B# h" j/ q, i m$ K" v
#17: Open-Loop Test 9 ?* n0 B4 M/ W' n9 }( k! g6 p" u' c8 Y
 1 Open the event list ( ) and use the “New Object” button to insert a “Set Parameter(EvtPara)” event: C; z6 k) Q$ k3 [, X# \
 2 Select the AVR controller for the element. + Q3 G2 R$ R$ m" M 3 Insert the name of the variable ‘usetp’ and the new value for this variable (=0.9).2 _+ h+ E6 G6 |/ Z( u6 }
补充:2 Define a variable set to monitor for the VCO element and visualize the results of the simulated step response! _ W5 I2 q9 c. @1 M; `! h6 v
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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?