Case Study: Balancing of Synchronous Condenser Rotor

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Project Details

Customer: Energy technology, solutions and services provider

Location: Regional Victoria, Australia

Work: Balancing of Synchronous Condenser Rotor

Date: March and May of 2022

Project Personnel: Craig Boston, Beau Wignall, Bob Graf, Justin Roth

Case study


AJSS was contracted to balance a Synchronous Condenser Rotor located at a wind farm in regional Victoria. The project was completed in two visits by our Field Service and Project Engineers in March and May of 2022.


The Synchronous Condenser Rotor needed to be balanced to the vibrational requirements of the customer. It also needed to be synchronised to the grid. The balancing of the Rotor is vital to ensuring its continuous operation and synchronisation to the electricity grid.


Balance weights that were previously installed by the customer were removed to enable baseline readings to be taken. An optical tachometer and multiple vibration probes were mounted to the Synchronous Condenser Rotor to take readings.  AJSS consulted with Customer Engineers to confirm a procedure for balancing the Rotor. Using this procedure a balance solution was calculated, and balancing weights were attached to the specified locations. After a full heat soak with the Synchronous Condenser Rotor connected to the electricity grid, final readings were taken that confirmed the Rotor’s operation matched the calculated solution.


The project achieved its intended outcomes. Our team achieved a 92.5% and 78.8% reduction in vibration on the Non-Drive End and Drive End respectively. As a result, the Synchronous Condenser Rotor was balanced to within the customer’s vibration specification of less than 2 mm/sec RMS. Following this procedure, the Synchronous Condenser Rotor was synchronised to the electricity grid.

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