Root Cause Analysis Director

Mr. Pham Van Vuong, Director of Hoa Binh Hydropower Plant, informed VTC News on the afternoon of June 13 that the plant is currently only generating electricity at a moderate level.

Mr. Vuong further clarified that when the water source is dry, at the dead water level, the hydropower industry recommends not to exploit because it will not be good for the generators. " In a forced situation, it must be run, but in general, it should not be exploited when the water level is dead. Our task, in addition to generating electricity to meet the electricity consumption needs of consumers, is to ensure the safety of the system as well as human safety, to prevent any damage and to ensure the water supply to the downstream", Mr. Vuong emphasized.

Previously, on the morning of June 13, answering VTC News , Mr. Tran Xuan Thuy - Deputy Head of the Labor Administration Department, Hoa Binh Hydropower Plant - said that although it has rained in recent days, the amount of water flowing in is not much, the water flow reached 103m, while the minimum water level is 81.9m, so the power generation capacity is still low.

“ We are continuing to monitor the amount of water flowing in and have regular reports sent to EVN Group to have a suitable electricity production plan ,” said Mr. Thuy.

Hoa Binh Hydropower Plant only generates electricity at a moderate rate: Director analyzes the cause - 1 — Water flow at Hoa Binh Hydropower Plant is only 22m from dead water level. (Illustration: Internet)

Hoa Binh Hydropower Plant has an output of 1,920 MW, playing an important role in national energy. In 2023, the hydrological situation on the Da River is very unfavorable for power generation. Up to now, in 2023, only 3.5 billion kWh has been generated, equivalent to 37% of the plan, so with the current situation, ensuring the power output plan will be very difficult...

In late May and early June, the company always exploited at a high level, almost at full capacity, so the lake water level dropped very quickly, the lakes in the Northern region and the Da River were all near the dead water level and the exploitation capacity was almost gone, reluctantly running to maintain.

Due to continuous discharge, the water level in the lake is only 102m. This water level is 15m lower than the normal water level and only 22m away from the dead water level. Meanwhile, the water level in the lake is 40m3/s, an insignificant level although it has rained in the past few days, but has not improved.

According to the report of the Department of Industrial Safety Techniques and Environment (DAST), the water flow to lakes across the country today increased slightly compared to yesterday. Lakes in the Northern, North Central, and Southeast regions have low water levels, approximately at the dead water level. The total water flow to large hydroelectric reservoirs in the North increased by 28% compared to June 11.

In the South Central Coast and Central Highlands regions, water levels in lakes fluctuated slightly compared to yesterday, within the minimum range prescribed by operating procedures.

The amount of water flowing into the reservoir is mainly for water regulation, ensuring minimum flow, so power plants generate electricity moderately with low water column and capacity to ensure safety for the generator during operation, it is difficult to meet the electricity generation according to the reservoir operation process at this time.

It is forecasted that in the next 24 hours, the water flow to the lakes will continue to increase slightly, the situation is still difficult even though the dead water level has passed. The total capacity that cannot be mobilized from the lakes of Son La, Lai Chau, Ban Chat, Huoi Quang, Tuyen Quang, Thac Ba, Hua Na, Ban Ve... is nearly 5,000 MW.

According to the Director of the Electricity Regulatory Authority, Tran Viet Hoa, up to this point, the total largest source capacity in the North has reached 18,580 MW, of which the largest capacity of hydropower is 3,800 MW.

Experts recommend that although the hydrological situation is more favorable, the heat wave will continue to be complicated, the demand for electricity will be high, so hydropower plants need to operate flexibly; increase water storage in hydropower reservoirs. Meanwhile, people and businesses need to raise their sense of responsibility and promote electricity saving programs to avoid pressure on the national power system, especially in the North.

PHAM DUY

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