Generator

Block appearance in REPEAT VISION

 The block is a model of a synchronous generator.

Hint

It is recommended to use this block with the Controlled generator block from the Electrocity library

 The connection is made using the Demux block. The output port of the block must be connected to the input port of the Demux block with 9 output ports, Fig. 1:

Fig. 1 Connection to the Demux block

 Output parameters from top to bottom:

The order of arrangement in Fig. 1 (top to bottom)	Name	Units of measurement
1	Generator voltage	V
2	Rotor winding current	А
3	Frequency	Hz
4	Rotor winding voltage	V
5	Voltage	r.u.
6	Angular velocity	r.u.
7	Rotor current	r.u.
8	Longitudinal contact resistance	Ohm
9	Phase	deg

 To connect to the Controlled generator unit, you need to connect it to ports 1, 3, 9 in the corresponding voltage, frequency and phase ports, Fig. 2:

Fig. 2 Connection to the Controlled generator unit

Hint

The remaining ports are required for setting up excitation system blocks and prime movers

 The first input port is the port for input signals from the network. Connection is made using the Multiplexer block with 7 input ports, Fig. 3:

Fig. 3 Connection to the Multiplexer block

 Ports for the multiplexer from top to bottom:

The order of arrangement in Fig. 3 (top to bottom)	Name	Units of measurement
1	Generator Breaker Status (0/1)	-
2	Real part of current	А
3	Imaginary part of current	А
4	Voltage	V
5	Active power	W
6	Reactive power	VAr
7	Network frequency	r.u.

 All parameters are taken using sensors from the conductor and the bus immediately after the generator.

 Ports Suppression (0/1), Loss of Excitation (0/1), Overload (0/1) are event ports.

Note

By default, it’s always set to 0. When set to 0, they don’t affect the block’s operation. When set to 1, they change the output parameters according to the event that occurred.

 The Turbine power and Excitation voltage ports are primary for generator control and recommend connecting units from the Prime movers section for power and Excitation systems for voltage.

1.  Properties

Property	Default Value	Description	Units of measurement
Rated current of the rotor winding	436	-	А
Open circuit voltage of the rotor winding	70	-	V
Integrator Gain(1/Mechanical Time Constant)	1/3.2	-	-
Rated voltage	10.5	-	kV
Rated power	7.5	-	MW
Rated power factor	0.8	-	-
Damping factor	0.2	-	-
Mechanical time constant	3.2	-	s
Longitudinal transient reactivity	0.28	-	r.u.
Rated current	517	-	А
Longitudinal reactance	1.61	-	Ohm
Rotor winding time constant	4.9	-	s
Field blanking ratio	20	-	r.u.
Rated rotation speed	3000	-	rpm

2.  Inputs and outputs

Parameters	Input/Output	Description	Units of measurement	Port type
Input parameters	Input	-	-	Automation
Turbine power	Input	-	r.u.	Automation
Suppression (0/1)	Input	-	-	Automation
Excitation voltage	Input	-	V	Automation
Excitation loss (0/1)	Input	-	-	Automation
Overload (0/1)	Input	-	-	Automation
Output parameters	Output	-	-	Automation

In order to see the connection capabilities of the block, you need to go to page Description of block ports