Water level of hydroelectric reservoirs in the Northern region increases rapidly

The water level of hydroelectric reservoirs in the Northern region is increasing rapidly, 10 - 20 m higher than the dead water level.

The Department of Industrial Safety Techniques and Environment, Ministry of Industry and Trade, said that the water flow at the hydroelectric reservoirs in the North is specifically as follows: Lai Chau Lake 782 m3/s; Son La Lake 2,220 m3/s; Hoa Binh Lake 769 m3/s; Thac Ba Lake 341 m3/s; Tuyen Quang Lake 901 m3/s and Ban Chat Lake 805 m3/s.

The water level in the lakes is 10m to 20m higher than the dead water level. Large reservoirs are limiting their power generation to prepare for the next heat wave. Some medium and small reservoirs with free overflow have had to regulate flood water.

Currently, the North is in the early flood period. It is expected that in the coming time, the water flow to the lakes in the North will continue to increase and can ensure electricity supply with an average calculated load of about 421 to 425 million kWh/day.

However, according to the Electricity Regulatory Authority, Ministry of Industry and Trade, because the current water level of hydroelectric reservoirs is still low, the available capacity of the generators is still reduced, so the ability to meet the largest load of the Northern power system is about 20,500 to 21,500 MW, depending on the time frame.

In case there is no flood or low flood flow to the lake, the Northern region can still use the remaining water in the lake combined with the natural water flow to the lakes to meet the load demand, however, the ability to store water will be difficult.

Regarding temperature, it is forecasted that the end of June to mid-July will not be as extreme as the end of May and early June, so the demand for household electricity is unlikely to be as high as in the past.

The average daily load in the North is forecasted to be around 421.7 million kWh. If there is a reasonable operating regime and good implementation, synchronous solutions to ensure electricity supply, the Northern power system will basically meet the load demand.

Source