Hydro-Québec's Chénier Station Enhances Power Grid with Static Compensation

Hydro-Québec's Chénier Station has significantly enhanced its electrical network stability with the addition of new static compensation systems. This project, located at a key power supply hub for the Greater Montreal area, is a crucial component of Quebec's power grid infrastructure.

The Chénier Station connects the Duvernay and Châteauguay substations and is fed by two 735 kV lines. To improve stability in the high-voltage network, which spans long distances, two 300 MVA static compensation units have been integrated.

The project involved optimizing cable routing and implementing specialized equipment, including thyristors and harmonic filters. These components, such as inductor coils, capacitors, and resistors, were critical for efficient operation within the high-voltage environment.

Harmonic filters were uniquely connected to mitigate negative impacts on the power grid's waveform. The facility includes an outdoor electrical substation with high-voltage filters connected to six 735/22.6 kV transformers, along with a control building. EXP, SYSTRA Canada, and Egis in Canada were responsible for the project's design and implementation.