below 49.5 hz, all providers of low-frequency response services were required to export at full power...as a result, grid frequency plummeted to 49.3 hz, 0.2 hz below statutory limits.with grid frequency dropping
projects》等33项能源行业标准外文版、《水电工程放射性探测技术规程》等3项能源行业标准修改通知单。...项能源行业标准、《specification for preparation of special geological report on impoundment-affected area for hydropower