低压开关及控制MATLAB仿真

1、低压开关及控制实验U的：1. 掌握高压断路器和低压开关的区别。2. 熟练运用MATLAB中的电力系统工具箱对理想低压开关电路进 行建模，观察分析其波形。实验内容：(1)如图所示，构建理想开关电路，观测理想开关的投切效果。开关未并联 缓冲电路，导通时电阻为Q,开关初始为合闸状态，S时开关断开，S时重合 闸成功.Scop*8» d/kg图3 3 »Cor：inuoui(2)设置模块参数和仿真参数。双击理想开关模块，按图设置参数。双击定时器模块，按图设置开关初始为 合闸状态，s时开关断开，s时再次合闸。电压源丙的有效值为120 V,频率为50 Hz。串联RLC支路中，电阻 用i?

2、10 Q,电感 ZU? H,电容 C?=?1Q uFo打开菜单Simulation>Conf iguration Parameters,选择 ode23tb 算 法，同时设置仿真结束时间为20 mstai 8lodc Parameters： AC VoHagc SovreeAC Volt age Source (xa?k) (liiJc)Ideal ainuraidal M Voltage source.PaiaiteESPeak &>pliti>de <V>:120Fhao <doc>:0Freouwvcy (Bs) xCOStaple ti

3、nt:0K?xruxenerrtff KoneI OK 丨 Caftcol i Help J "ply | 图MMSet the initial capacitor volt age囤 Block Parameters; Series RLC BranchSeries RLC Branch (mask) (link)Implements a series branch of RLC elements.Use the 5 Branch type5 parameter to ad.d or reinove elements from the branch.Neasur eirient s

4、 NoneCancelHelpApply三相电压电流测量模块图九| Block Parameters; Three-Phase V-I MeasurementThree-Phase VI Jleasurement (mask) (link)Ideal three-phase vo It age and current measureineirts.The "block can output the volt ages and current s in per unit values or in volts and amperesParajnetersVolt age measurej

5、nent phase -to - ggundI Use a labelVolt ages in pu5 based on peak value of nominal phase-to-ground voItageCurrent measurement yes_i Use a labelI Currents in puOutput signals in: ComplexOKCancel Help Apply 5 图 输电线路图：输电线路模块图:图万用表模块图：（电压）P3 xtsxdl/Multimeter士 回 IsWHelp乞A'/ailablG MGasurerrientsSele

6、cted MeasurementsubububTbTbTbThreePhafle Thraa-Phaao ThreaPhafle ThroaPhaso ThreePhafle ThraaPhasoFault/Fault A Fault/Fault B Fault/Fault C Fault/Fault A Fault/Fault B Fault/Fault CUb: Thrac-Phaaa Ub: Thrac-Phaaa Ub: Thrcac-Phaaa7ault/F-ult A ault/F-ult B 7ault/F-ult CUpdateRot seectec rreasurements

7、Output typeClose（电流）图万用表1图三相序分量分析图:图图算法模块图:图单项接地: 故障模块:|料| Block Parameters: Three-Phase FaultThree-Phase Fault (aask) (Link)(J3C this block -to procr a fault (3hort-circuit) betveenany phase and the ground. You can define the fault timmcdirect 1/ froi. the dialog box or apply an external logical signal.If 70U check the External coirtrol? box , the external corrtrolinput will appearParane-ters"I Phase A FaultrPhase B FwjltrPhase C FaultFuTt resistances Ron (ohjris):0.01了 Ground FaultGroijnd resistance Rs (oh