Ensuring safety for hydroelectric projects during the rainy and stormy season

Ho Ho Hydropower Plant is located in Ha Tinh and Quang Tri provinces, with a reservoir capacity of about 38 million m³, of which the useful capacity is only about 6 million m³. Therefore, the plant proactively develops a plan to regulate the operation of the reservoir in a flexible manner, suitable to the reality, to minimize the impact on the downstream area. The water discharge is strictly implemented according to the approved operating procedures, ensuring that the amount of water discharged downstream does not exceed the amount of water flowing into the reservoir.

In the face of the complicated developments of storms No. 5 and No. 6, Ho Ho Hydropower Plant has proactively closely monitored weather forecasts, monitored rainfall and water flow into the lake at each time. Based on that, the plant has developed and adjusted appropriate operating plans to ensure safety for the project and downstream areas.

Mr. Nguyen Ba Tuan - Deputy Director of Ho Ho Hydropower Plant said: "During the operation of the plant during storms, we always strictly follow technical procedures, increase inspection of construction items, especially operate equipment according to procedures to ensure the safety of the dam and the entire project."

Ho Ho factory control center operates the process.

To effectively respond to storms No. 5 and 6, the plant has proactively regulated the lowering of the reservoir water level, creating more flood prevention capacity. The regulation process is carried out in accordance with procedures, with supervision and direction from the People's Committee of Ha Tinh province and related departments, agencies and sectors. At the same time, the plant closely coordinates with the local authorities in the downstream areas of the two provinces of Quang Tri and Ha Tinh to promptly notify the reservoir operation situation so that people can proactively take precautions.

In addition to the task of regulating and ensuring the safety of the reservoir, Ho Ho Hydropower Plant also focuses on electricity production. Due to the impact of storms No. 5 and 6, from August 25, 2025 to present, heavy rainfall has caused the amount of water flowing into the reservoir to increase. The plant has operated both units at maximum capacity 24/24 hours, averaging 320,000 kWh/day to the national grid. Cumulatively from the beginning of the year until now, the grid-connected electricity output has reached 22.6 million kWh.

Ho Ho Hydropower Plant actively monitors rainfall and water flow into the lake to regulate the flow through the spillway and generate electricity to ensure safety for the project and downstream areas.

Before the storm, due to the low water level in the lake, the plant could only operate one unit for about 5 hours per day (from 5pm to 10pm), so the electricity output was quite low. Therefore, the plant is currently promoting technical solutions to increase commercial electricity output, while effectively regulating the reservoir and ensuring safety in the downstream area.

Currently, most of the stages in the management and operation of the hydropower system in Ha Tinh province have been digitized, bringing about many obvious effects such as saving human resources, time, and costs, while meeting strict technical requirements to ensure the plants operate safely and stably, especially during the rainy and stormy season.

At Huong Son Hydropower Joint Stock Company, systematic investment and effective application of advanced technologies have helped the unit proactively implement digital transformation in monitoring, collecting and analyzing operating parameters at the plant. Important parameters such as: active power, reactive power, voltage, current of each unit as well as operating parameters of the transmission line system are continuously monitored and controlled from the central control room.

Huong Son Hydropower Plant strengthens disaster response work.

Notably, in the context of the complicated storm season, the digital system also helps the factory improve its capacity to monitor construction safety, promptly detect unusual signs for proactive handling, and minimize risks that may affect the reservoir, dam, and downstream area.

According to Mr. Nguyen Huy Tuan - Deputy General Director of Huong Son Hydropower Joint Stock Company: "The application of digital technology helps the company's leaders and technical team monitor all operating parameters anytime, anywhere via mobile devices with internet connection. This not only effectively serves the management of operations and production management but is also especially useful in controlling the safety of dams, ensuring stable operation before, during and after each flood."

Workers operate generators at Huong Son Hydropower Plant.

Actively applying digital transformation in operations management not only helps improve productivity and quality of factory operations but also plays a key role in responding to natural disasters, protecting the safety of works and downstream areas.

Ha Tinh currently has 6 hydropower plants in operation with an installed capacity of 83 MW. In 2024, the plants generated nearly 250 million kWh to the national grid, with the target of producing about 280 million kWh in 2025.

According to the Department of Industry and Trade of Ha Tinh, currently, other hydropower plants in the area such as Da Han Hydropower Plant, Ngan Truoi Hydropower Plant and Ke Go Hydropower Plant have also proactively and flexibly deployed technical solutions to ensure power generation, contributing to ensuring energy security. In addition, the units also focus on developing plans and implementing PCTT&TKCN solutions with the highest goal of ensuring safety for the works and downstream areas.

Source: https://baohatinh.vn/dam-bao-an-toan-cho-cong-trinh-thuy-dien-trong-mua-mua-bao-post295116.html