MV1305-405 Mobile Motor / Generator Unit

Description

MV1305-405 Mobile Motor / Generator Unit is a standard laboratory for power transmission normally consists of one or two generators, which are connected to one or more transmission links which finally reach transformers, distribution units and loads. This configuration may look like the very left line in figure 1.

However, a realistic network most likely looks like the complete network of figure 1. For example, here can be seen turbine/generators in parallel on the same busbar, a synchronous machine used as a synchronous compensator in the middle of a line, a single generator unit and a heavy group of generators.

Energy transfer, load shedding, static and dynamic stability at disturbances as well as sophisticated protection schemes can be studied under realistic forms. Not to forget compensation possibilities.

Power- and current- paths in grid networks are complicated. The TERCO system will give understanding for this problem.

The wide range flexibility will be given by the mobile generator station / synchronous alternator (compensator) MV 1305.

Two sets of MV 1305 can operate as described or work in parallel. In this case mechanical and electrical parameters might be changed by using e.g. flywheel (MV 1010) and different electrical connections.

Modes of Operation

  1. Control of active power (frequency): AC-machine and frequency converter drive (”turbine”) + synchronous machine (generator) in closed loop connection regarding frequency.
  2. Control of active power (frequency) and reactive power (voltage): Two closed loops regarding frequency and voltage.
  3. Synchronous compensating: AC-machine and frequency converter drive (”turbine”) idling, electrically disconnected or mechanically disconnected, synchronous machine in closed loop connection for voltage (=reactive power) control.

Technical Specification

MV1305-405-235

Power Supply AC 3-ph

380-415 V

Frequency

50 Hz

Max current

16A

Turbine/AC-machine freq.drive:

Armature/stator Volt AC

323-528 V

Frequency

0-63 Hz

Armature/stator current

3.4 A

Input current

5.9 A

Rated output current

4.0 A

Rated output capacity

3.2 kVA

Speed

0-1800 rpm

Synchronous generator:

Armature volt AC 3-ph

0-140 / 240 V

Power

1.2 kVA

Cos ϕ

0.8

Field volt

0-230 V DC

Speed Controll

0-1800 rpm

Active power control

SCR-frequency converter, electronic current limit setting, start and stop ramps.

Feedback systems

Manual frequency setting. Automatic/Constant setting

Field current supply

Integrated

Voltage control/

Reactive power control

PWM min. ripple-converter, electronic current limit setting

Feedback systems

Manual voltage setting. Automatic/Constant setting. Separate voltage feedback

Instruments

AC-machine freq.drive (Turbine simulator):

  • Parameters and indications selected by 4-lines display in HMI-unit typically like: Frequency setpoint (F50,00Hz)
  • Stator Electric Frequency (H 51,00 Hz)
  • Actual motor speed (from encoder 1500 rpm)
  • Motor current (A 2,20 A)
  • DC-interlink voltage (V 520 V)
  • Speed control potentiometer (=frequency control)
  • Control method selector

AC-machine M/G:      

  • Armature voltage
  • Voltage selector switch
  • Armature current
  • Voltage control potentiometer
  • Control method selector
  • Field current ammeter

AC-machine M/G:

  • Armature voltage
  • Voltage selector switch
  • Armature current
  • Voltage control potentiometer
  • Control method selector
  • Field current ammeter
  • Synchronizing devices:
  • Synchronizing instrument
  • Double voltmeter
  • Double frequency meter
  • Synchronizing switch
  • Automatic or manual synchronizing

Auxiliary:   

Machines mounted on machine bed with slirails. Control panel integrated with machines to one mobile unit. Laboratory connections by 4 mm banana plug of safety type. Possibilities of connecting different types of step-up transformers as well as other instruments and protections.

Item

Power Supply

Synchronous Generator

MV1305-405-235

380-415V 3-ph, 50Hz

220-240V 3-ph, 50Hz

MV1305-405-236

380-415V 3-ph, 60Hz

220-240V 3-ph, 60Hz

MV1305-405-405

380-415V 3-ph, 50Hz

220-240V 3-ph, 50Hz

MV1305-405-406

380-415V 3-ph, 60Hz

220-240V 3-ph, 60Hz

Transmission, Transformer & Protection Lab