EVN RAMPS POWER LEVEL DRY
Power generation in January 2016, taking advantage of the weather to save the amount of bioslurry for agricultural production are the strict actions that the electricity industry has implemented to save water for electricity generation.
Saving 2 billion m3 of water
Thanks to favorable weather and the close monitoring process of irrigation and electricity industry, not managing the time of Tet 2016, the plan of discharging hydroelectric lakes to serve agricultural production in Winter-Spring crop 2016 at 12 Significant changes have been made to the provinces and cities in the Northern Plains and Midlands.
Previously, according to the plan agreed by the General Department of Irrigation and the Electricity of Vietnam (EVN), to ensure that there is enough water as required, the hydroelectric lakes will discharge the total amount of water in all three phases. 21 days with 5.16 billion m3. Specifically, Ba Ba waterfall will discharge 0.829 billion m3; Tuyen Quang lake discharged 1,108 billion m3 and Hoa Binh lake discharged 3,221 billion m3.
Mr. Nguyen Van Tinh, Deputy Director of the General Department of Water Resources, admitted that in the past 10 years, thanks to large hydroelectric lakes such as Thac Ba, Tuyen Quang and Hoa Binh, 12 provinces in the Northern Plains and Midlands. The ministry was guaranteed water supply for agricultural production in the winter-spring crop with a total area of 630,000 ha. Recognizing the fact that the amount of water discharged from the hydroelectric reservoirs serving the production of Winter-Spring crop in the North tends to increase in the past few years, Mr. Tinh also said that the cause was due to the impact of the Elnino phenomenon, causing rain. less than.
Prior to the first phase of water discharge, the irrigation industry was very concerned that the water level in the rivers was very low, in many places only from 0.2-0.4 m, so the buffer water needed to raise the water level on the river. up to 2.2 m in the part of the Red River section passing Hanoi, which is more suitable for day-to-day pumping. In addition, the bottom of the Red River in recent years has also decreased by about 20%, the bottom of the Duong River has been lowered by 40%, making the amount of water needed to compensate more expensive.
However, the General Department of Water Resources said that, due to the coordination, good and proactive management of localities and especially the favorable water resources compared with prolonged heavy rains, the time of first-phase water discharge has been shortened. 1.5 days, stop the second water discharge and shorten 2 days of water discharge 3. This fact helps hydroelectric lakes save about 2 billion m3 of water to be discharged.
Sloping electricity worry in the dry season
Entering 2016, the water storage of hydropower reservoirs still lacks the equivalent of 2.5 billion kWh of electricity. Meanwhile, the forecast of hydrological situation will be unfavorable, likely to be widespread in the first half of 2016 and longer due to the impact of Elnino, so the operation of hydropower reservoirs for production Electricity and meet the water demand for agriculture, people living downstream will be very difficult.
Mr. Ngo Son Hai, EVN Deputy General Director, said that although EVN has been actively storing water in lakes early, but because there was no flood in the 2015 flood season, by December 31, 2015, the water level was high. Large hydropower reservoirs are still lower than normal rising water levels, especially in the Central region and Central Highlands.
According to the statistics of the National Load Dispatch Center (A0), the total water volume of the hydroelectric lakes as of December 31, 2015 was insufficient compared to the normal water level of nearly 6.5 billion m3; in which the North has a shortage of nearly 2.3 billion m3, the Central region has a shortage of over 2 billion m3 and the South has a shortage of more than 2.1 billion m3.
Therefore, saving 2 billion cubic meters of water without discharge right in the first months of the dry season 2016 has helped the power industry have more backup sources.
“In November 2015, EVN submitted 4 power supply options for 2016, after which the Ministry of Industry and Trade approved an official plan. However, the actual electricity demand in the first month of 2016 is higher than the approved plan. Therefore, from January 2016, EVN had to mobilize some oil sources in the South to keep water in hydroelectric reservoirs and many plants are generating as required to supply water for downstream ”, Mr. Son Hai said. know.
Currently, there are 81 hydropower plants (over 30 MW) operating with a total installed capacity of 15,570 MW, accounting for 40.4% of the total installed capacity of the system. Of these, 26 hydropower reservoirs regularly operate according to local requirements to meet the downstream water.
According to EVN's report, in 2016, the total capacity of power sources nationwide is 38,800 MW, the total capacity of power sources expected to operate in 2016 is 3,500 MW. Of these, EVN will put into power generation 9 units with a total capacity of 2,534 MW, including units 2 and 3 of Lai Chau Hydroelectric Plant, Unit 2 of Huoi Quang Hydropower Plant; units 1 and 2 of the Trung So Hydro Power Plant, Song Bung 2 Hydroelectric Plant and Duyen Hai 3 Thermal Power Plant.
There are also 351 power grid projects from 110 kV to 500 kV with a total line length of 4,800 km, a total capacity of 21,890 MVA transformer stations made by EVN's units is planned to be completed in 2016 to ensure Stable power supply.