remove duplicate references to outer system

Author: rfranke

PowerSystems/AC3ph/Sources.mo

@@ -194,7 +194,6 @@ with variable amplitude and phase when 'vPhasor' connected to a signal-input.</p
     parameter SIpu.Reactance x=1 "reactance d- and q-axis";
     parameter SIpu.Reactance x_o=0.1 "reactance 0-axis";
   protected
-    outer System system;
     final parameter Boolean steadyIni_t=system.steadyIni_t and stIni_en;
     final parameter SIpu.Voltage v0(final fixed=false, start=1)
       "voltage behind reactance";

PowerSystems/Control/Exciters.mo

@@ -145,9 +145,6 @@ package Exciters "Generator Exciters "
 
     parameter SIpu.Voltage[2] v_f_minmax(each unit="1")={0, 3}
         "{min,max} exciter voltage";
-    protected
-    outer System system;
-    public
     Modelica.Blocks.Interfaces.RealInput setptVoltage(
                              final unit="1")
         "setpoint norm of terminal voltage pu"

PowerSystems/Control/Governors.mo

@@ -154,9 +154,6 @@ package Governors "Turbine Governors "
 
     parameter SIpu.Power[2] p_minmax(each unit="1")={0,2}
         "{min,max} turbine power";
-    protected
-    outer System system;
-    public
     Modelica.Blocks.Interfaces.RealInput setptPower(
                            final unit="1") "setpoint power pu"
       annotation (Placement(transformation(extent={{-110,-50},{-90,-30}})));