To maintain the stability of the national power grid frequency, secondary control—AGC (Automatic Generation Control)—has been introduced alongside the previously implemented primary control—FGMO (Free Governor Mode of Operation) at power plants.
The AGC system has been implemented under the supervision of the National Load Dispatch Center (NLDC) of Power Grid Bangladesh PLC, with the support of the Bangladesh Power Development Board (BPDB) and the participation of concerned power plants. As a result, the stability of the grid frequency has significantly improved, which will facilitate the safe integration and operation of the Rooppur Nuclear Power Plant within the national grid, said a press release.
To ensure grid frequency stability, Power Grid Bangladesh PLC has implemented a project titled ‘Bangladesh Power System Reliability and Efficiency Improvement Project.’ Under this project, the EMS software of NLDC has already been upgraded, and FGMO has been introduced in 30 power plants.
At present, 12 power plants have been incorporated under secondary control—AGC to further stabilize grid frequency. It has been observed that simultaneous operation of both Primary and Secondary Control at power plants significantly enhances grid frequency stability. This operational activity was conducted on April 28 and 29.
Maintaining grid frequency stability requires adequate ‘spinning reserve.’ When sufficient spinning reserve is ensured, power plants can automatically adjust their generation—either increasing or decreasing output—based on grid demand through FGMO and AGC. This is an essential prerequisite for maintaining grid frequency stability.
Ensuring adequate spinning reserve at power plants and keeping them operational under FGMO and AGC will further enhance the stability of the national grid frequency in the future, thereby creating a conducive environment for the safe and efficient operation of the Rooppur Nuclear Power Plant.
