More than 300 days of communication ‘highway’ 500 kV circuit 3

But “sunshine, wind, rain” is not the only difficulty.

The pressure of progress, the huge workload while many technologies are first used, the contractors also constructed for many nights “loss of insomnia”. With these things, electricians must use advanced initiatives, creativity and technologies to be able to complete the job, bringing the project to the target time.

Column No. 175 is designed using a pipe linking column technology (DO) to be popular in the world, but for the first time the application at Vietnam’s super high pressure project. The characteristics of this type are high and heavy, people cannot hug, no climbing legs and vertical points for assembly. Not to mention, the construction location next to Ho Boc Nguyen has 2 sides adjacent to the lake bed, there is a difficult and difficult way to travel.

At that time, the construction unit had no experience in erecting this type. If using conventional methods, use a ladder to climb into the tube, the fastest time is about 50-55 days, does not meet the progress of the project. The contractor then thought of a way to process prices attached to the end of the main pipe to be able to stand around. This helps people to manipulate firmly, safely, can sit and rest, limit up – down. The construction progress is 40-45 days, shortening 10 days.

In addition to the construction initiative due to the above 175 position, many new and creative ways are also applied, the representative of the contractor, the General Director of PC1 Group Vu Anh Duong said, at the inauguration ceremony at the end of August 2024. For example, they use flying equipment to pull the bait wire, instead of doing traditional ways, 10-20 workers needed forest ice workers, wading streams to pull the rope from one column to the other. The synchronous hydraulic pulling devices are also used to simultaneously spread 4 large conductors at long -sized spaces. This helps push the wire pull progress at large intervals, crossing forests, mountainous terrain, rivers and lakes, intersecting roads.

The whole political system

According to EVNNPT, projects with similar scale and volume take 3-4 years. For example, the project of 500 kV 300 kV Pleiku – My Phuoc – Cau Bong is 437 km long construction for nearly 3 years, the 300 kV 300 kV transmission line with Vung Ang – Quang Trach – Doc Soi – Pleiku 2 is 740 km long Also nearly 4 years.

One of the “keys” for 500 kV line 3 to finish with a monthly time is the speed of clearance – the thing that is the biggest obstacle that makes the transmission projects often take many years. . Unlike the road, only a column position encountered in compensation and site clearance also made the transmission line 200-300 km unable to close.

With the 500 kV project of circuit 3, the compensation and clearance of ventilation are obtained by the involvement of both the political system and the support of the people.

This project has a length of 519 km, passing through 211 communes and wards of 43 districts and towns in 9 provinces: Quang Binh, Ha Tinh, Nghe An, Thanh Hoa, Ninh Binh, Nam Dinh, Thai Binh and Hai Hai Duong, Hung Yen. Nearly 5,250 households, 96 organizations were affected, of which 167 households had to relocate resettlement, to yield 1.83 million m2 of land for construction. But it only takes 2 months, the entire 1,177 location is handed over to the construction contractor. Next, the entire corridor was also handed over shortly thereafter.

“There are few projects that the consensus of the people is so tall,” the representative of EVNNPT said, adding that people are willing to give land, make up, do business, and livelihoods for the project. There are even households who actively dismantle their houses, relocate their fathers’ graves, so that the project will soon go into implementation.

Mr. Vu Dinh Sy’s family, Thieu Long commune, Thieu Hoa district, Thanh Hoa province is an example. His family has 5 plots of land in the relocation area. The wooden furniture store, the main source of life of the family, is also placed there. However, according to Mr. Sy, his own and his family soon handed over the ground, contributing to the project to complete on schedule because “This is a special project, related to the socio -economic development of country”.

Or Mr. Le Trong Ba, Hau Hien town, Thieu Hoa district, Thanh Hoa province, has relocated the house about 2 months before taking compensation. “I moved to another place so that the state project was sailing and good,” he said.

EVNNPT General Director acknowledged that people will support when they understand the importance of the project. In order to do that, since the project has not been approved, EVNNPT has worked with each commune, village and household on compensation and site clearance plan. By the time the project was approved, basically the existing compensation dossier was the basis for the locality to gradually compensate and mobilize people to relocate.

At many times, the construction of the project is at risk of slow progress due to mechanisms and resources but are quickly removed.

For example, the regulations on changing the purpose of forest land use and the procedure for impact on the forest to open a temporary construction path are an example. Decree 27 of the Government took effect quickly, helped to remove this bottleneck. About three weeks after the decree was born, the last foundation of the natural forest was completed to open the construction path to deploy the foundation of the foundation.

Or with a huge workload, supplying steel columns is a big challenge. In this project, 519 km of double circuits, equivalent to more than 1,000 km of single circuit, must build 139,000 tons of steel, more than 2 times higher than the circuit 1 with construction time just over 6 months. But the capacity of domestic production units only meets 80% of the project’s required capacity. Not to mention, some new steels in the country cannot be produced, must be imported.

At that time, the Ministry of Industry and Trade had to send the functions and telegrams to the Embassy and the deal of the three countries of Russia, India and China, thanks to their support for the source of imported goods and equipment, especially columns steel. The investor must also send people directly to work with foreign equipment and supplies manufacturers to negotiate and arrange imports. As a result, 1,000 containers of materials and equipment from other countries have been promptly transferred by Vietnam Railway Corporation, shipping unit to Vietnam.

In addition, this transmission grid project also set a record of mobilizing the number of participants, about 23,000 people. In particular, two -thirds of resources are mobilized from people, youth unions, and professional officials and engineers from electricity companies, transmission, Viettel, VNPT, PVN …

General Director of EVN Nguyen Anh Tuan said the 500 kV line 3 in the spirit of promoting the synthesis strength of the entire political system. Thanks to each stage of withdrawal, effort “connecting the line” of the whole system, the “highway” 500 kV circuit 3 becomes a project that reaches a record of construction time, only one five years compared to the arcs. The previous paragraph.

“In the process of working, there will be people who discuss and have people backing, there are people who are determined and have people. But the vast majority of determination and knowing how to do it will do it,” Prime Minister Pham Minh Chinh Share at the Conference to summarize the electricity industry at the end of last year. The Government leader affirmed that the 500 kV 300 kV Quang Trach – Pho Noi project means “nothing impossible”.

Previously, government leaders also said that from this project, Vietnam will have more experience applied to the national key project such as highways, airports, ports, urban railways in control and control push the progress from the stage of investment preparation, capital, site clearance to construction, mobilizing resources to participate.

Along with nearly 1,180 km of two 500 kV lines from the Central to the South has been completed earlier, the project creates an additional 500 kV line of 3 -circuit 3, connected from the North to the South. The project helps to improve the system of 500 kV North – South system transmission, increasing electricity supply through the 500 kV system from China – North about 2,500 MW. This helps compensate for local electricity deficiency, ensuring electricity supply and energy security for the North in the coming years.

Vietnam is preparing to enter the new era, the era has reached rich and prosperous. The Prime Minister said Vietnam must have a breakthrough in growth, reaching a speed of two numbers in the coming decades. Thus, electricity growth must be higher, to meet the needs of the economy.

“A percentage of GDP growth is about 1.5 percentage of electricity growth,” the Prime Minister said. Therefore, he requires the industry to have breakthroughs, century constructions, projects that turn the situation, change the status, such as 500 kV line 3 Quang Trach – Pho Noi. This is aimed at “definitive not to lack electricity for growth, industrialization and modernization of the country”.