unbalanced_stepdown_D-grY.glm

// $id$
//	Copyright (C) 2008 Battelle Memorial Institute

// 4 Node Feeder: Unbalanced step-down delta-grY

clock {
	timestamp '2000-01-01 0:00:00';
	timezone EST+5EDT;
}

module powerflow;

object overhead_line_conductor:100 {
	geometric_mean_radius 0.0244;
	resistance 0.306;
}

object overhead_line_conductor:101 {
	geometric_mean_radius 0.00814;
	resistance 0.592;
}

object line_spacing:200 {
	distance_AB 2.5;
	distance_BC 4.5;
	distance_AC 7.0;
	distance_AN 5.656854;
	distance_BN 4.272002;
	distance_CN 5.0;
}

object line_configuration:300 {
	conductor_A overhead_line_conductor:100;
	conductor_B overhead_line_conductor:100;
	conductor_C overhead_line_conductor:100;
	conductor_N overhead_line_conductor:101;
	spacing line_spacing:200;
}

object transformer_configuration:400 {
	connect_type DELTA_GWYE;
	power_rating 6000;
	primary_voltage 12470;
	secondary_voltage 4160;
	resistance 0.01;
	reactance 0.06;
}

object node:1 {
	phases "ABCD";
	voltage_A +7199.558+0.000j;
	voltage_B -3599.779-6235.000j;
	voltage_C -3599.779+6235.000j;
	nominal_voltage 7200;
}

object overhead_line:12 {
	phases "ABCD";
	from node:1;
	to node:2;
	length 2000;
	configuration line_configuration:300;
}

object node:2 {
	phases "ABCD";
	voltage_A +7199.558+0.000j;
	voltage_B -3599.779-6235.000j;
	voltage_C -3599.779+6235.000j;
	nominal_voltage 7200;
}

object transformer:23 {
	phases "ABCN";
	from node:2;
	to node:3;
	configuration transformer_configuration:400;
}

object node:3 {
	phases "ABCN";
	voltage_A +2401.777+0.000j;
	voltage_B -1200.889-2080.000j;
	voltage_C -1200.889+2080.000j;
	nominal_voltage 2400;
}

object overhead_line:34 {
	phases "ABCN";
	from node:3;
	to load:4;
	length 2500;
	configuration line_configuration:300;
}

object load:4 {
	phases "ABCN";
	voltage_A +2401.777+0.000j;
	voltage_B -1200.889-2080.000j;
	voltage_C -1200.889+2080.000j;
	constant_power_A +1275000.000+790174.031j;
	constant_power_B +1800000.000+871779.789j;
	constant_power_C +2375000.000+780624.750j;
	maximum_voltage_error 0.001;
	nominal_voltage 2400;
}