Macau, 9 July 2024

To ensure the safe operation of the power grid during the peak summer period in 2024 and improve the emergency response capabilities of all parties, Companhia de Electricidade de Macau - CEM, S.A. (CEM) recently conducted joint emergency drill for the 2024 summer peak season, together with Guangdong Power Dispatch Center of Guangdong Power Grid (GPG) and Networks Dispatch Center of Zhuhai Power Supply Bureau. Through the power system emergency drill, the emergency handling, coordination and collaboration among the three parties were tested, as well as the understanding and proficiency of the three-party power grid dispatchers in terms of grid operation modes and relevant control interfaces under emergency conditions.

The drill simulated the cable fault of Zhuhai Power Supply Bureau’s 220kV Hengqin-Lotus Line A, B and C and Yanbei Line A and B, resulting in a weakened grid structure for power supply to Macau and a decline in Macau’s power supply capability. Through CEM’s close collaboration with Guangdong and Zhuhai, the 110kV Gongbei-Macau Line A and B and CSPG-Macau Line A and B between Guangdong and Macau were operated to supply power to the Macau power grid.

CEM took this opportunity to expand and refine the content of its internal drills. During the drill, various departments of CEM conducted detailed emergency operation exercises, with each department executing response measures according to corresponding procedures, including sending emergency teams and engineers to inspect abnormal equipment and collect information on site, coordinating to increase the output of the generating units of Coloane Power Station B, and activating Coloane Power Station A’s back-up generating units, calculating and verifying the load flow conditions, and arranging for the 110kV Gongbei-Macau Line and CSPG-Macau Line to operate in a split configuration. Moreover, CEM also activated the inter-departmental information reporting and external dissemination mechanism for incidents, initiated emergency crisis management preparedness, analyzed and assessed the load transfer procedures and fault recovery process, simulated important customer inquiries handling, monitoring and confirming the operation of various automation and communication systems etc., in order to strengthen the ability to respond to sudden power system failures.

The smooth completion of the drill helped deepen the familiarity of personnel in various departments with proper power grid fault handling procedures, laying a solid foundation for ensuring a reliable power supply during the summer peak season. Going forward, the three parties will continue to strengthen power grid interconnections, further improve emergency response procedures, and continuously enhance the resilience of the regional power grid, providing a strong guarantee for the long-term reliable power supply to Macau.