Stable power supply for coal production

TKV leaders inspect the site of tunnel digging and underground coal mining of Thong Nhat Coal Company. Photo: Thanh Nam (Contributor)

On average, Quang Ninh Electricity Company supplies about 700 million kWh of electricity to TKV's production units per year, accounting for over 36% of the province's total electricity consumption. Of which, underground coal production is a major electricity consumer of TKV. Therefore, TKV's production units are identified as key electricity users of the province. In addition to supplying electricity for coal production, maintaining a stable power source is an important factor to ensure that ventilation equipment, water pumps, etc. operate continuously.

Through the review and assessment of Quang Ninh Electricity Company, up to now, the total number of medium voltage lines provided by the management unit to coal companies is 14/136 lines (accounting for 10.3% of the total number of medium voltage lines). Coal companies manage a total of 16/46 lines (accounting for 34.8% of the total number of medium voltage lines managed by customers). Due to the characteristics of medium voltage lines provided to coal companies in Quang Ninh area, most of them pass through mountainous areas, mines with many trees and polluted environment, so every year there are still incidents due to falling trees (strong winds, storms, people cutting down, forest fires...), surface discharge of insulation due to dust. In addition, Quang Ninh has a high density of lightning strikes, with an average of 100 days with lightning per year. During the rainy and stormy seasons, lightning often strikes power lines and transformer stations with great intensity, damaging equipment and causing power supply interruptions to customers, including coal production units.

Identifying risks caused by terrain and weather, the Company annually inspects and tests equipment items according to the actual operating status of 110kV transformer stations and medium and low voltage equipment to proactively detect and promptly handle equipment defects arising during operation. The 110kV transformer stations and medium voltage power lines supplying power to coal companies managed by Quang Ninh Electricity Company all meet the load demand, ensuring stable production.

Ha Tu Coal Joint Stock Company promotes coal mining at the bottom of the moon. *Photo: Pham Tang*

However, the forecast of provincial load demand in the summer months of 2025 is to increase by about 8-9% compared to 2024. Meanwhile, the Quang Ninh area has no new source to supplement, still receiving source allocation from the national power system.

Mr. Dang Thanh, Deputy Director of Quang Ninh Electricity Company, said: In early April, the Company and TKV assessed the overall status of the power grid system, load regulation at peak times, the quality of the power transmission and distribution system, and the backup capacity, information and coordination regime to resolve incidents, typically some situations that occurred such as storm No. 3 ( Yagi ) in 2024... From there, solutions were proposed to resolve existing problems towards the goal of proactively regulating and not interrupting the supply of electricity for production in 2025 and the following years.

TKV and Quang Ninh Electricity signed a memorandum of understanding on coordination in managing and operating the power supply system for production and incident response, and storm prevention in 2025. *Photo provided by the supplier*

Accordingly, Quang Ninh Power Company continuously monitors the load, strengthens line inspections and performs repairs and maintenance of equipment in the best condition to ensure optimal load-carrying capacity of lines and equipment. The Company also coordinates, calculates and creates special wiring to supply power to support customers when incidents occur; speeds up the progress of renovation, upgrading and installation of new power transmission lines and transformer stations that have been planned, to best meet the needs of TKV units.

TKV's production units will proactively have plans to repair and maintain equipment, coordinate with Quang Ninh Electricity Company to inspect and handle problems arising at the boundary points. At the same time, strengthen operational coordination in case of power source reduction and adjust capacity during hot weather periods when the national power system lacks local capacity during peak hours; prepare generators for customer loads to reduce the pressure on the national power system in case of force majeure; consider using renewable energy (rooftop solar power, wind power, battery storage, etc.) in a self-production and self-consumption manner suitable for the technological chain, etc.

Queen Russia

Source: https://baoquangninh.vn/cap-dien-on-dinh-cho-san-xuat-than-3356639.html