(PLO)- The National Power Transmission Corporation (EVNNPT) has focused on researching, building and deploying smart grids.
According to statistics, incidents caused by lightning account for the majority of incidents occurring on power lines. In order to reduce incidents caused by lightning, EVNNPT has applied lightning protection to line valves at locations where incidents often occur; poles with high height (changing high mountain topography, crossing rivers, crossing other lines)…
In order to have sufficient information about lightning, to serve the design, operation, repair and reduction of incidents caused by lightning, EVNNPT has invested in equipping “Lightning warning collection system”, helping support quick fault location and cause analysis. As a result, from 2016 to now, lightning incidents decreased by 35% – 50%.
Because the 500kV, 220kV line system stretches, goes through complex terrain, especially affects the power supply in a large area when a fault occurs, it is important to accurately determine the fault location on the line. Facilitating point finding, quick troubleshooting ensures uninterrupted power supply, thereby reducing management and operation costs as well as output shortage is an important requirement.
Technology brings great effects in the increasingly difficult and complex geographical conditions of the transmission grid.
EVNNPT has researched and installed fault locating equipment for over 80 500kV and 220kV lines of great length, passing through complex terrain. The problem locator application has been effective: Reduce the time to find and fix the problem; reduce the cost of labor to patrol the line; increase the ability of safe and continuous transmission; reduce the cost of maintaining system safety during power failure; reduce the cost of fines according to regulations due to power failure.
Since 2018, EVNNPT has deployed the application of unmanned equipment (UAV) in line management and inspection. In addition, the units have built and improved more UAVs used to handle kites entangled on wires, spray anti-epidemic drugs, and wash porcelain online.
The UAV is effective in helping to quickly detect problems in the line segments passing through complex terrains such as valleys, large river crossings, terrain divided by canals, rivers, flooded areas. …
The application of advanced technology in the management and operation of the transmission grid is an inevitable trend.
Currently, EVNNPT is testing the application of AI technology to analyze images collected from UAVs, helping to automate and improve efficiency in checking, analyzing and assessing the status of line equipment, lifting improve the efficiency of the management and operation of the transmission grid. Applying UAV for line inspection helps to save labor and improve labor productivity; help limit the danger to workers when moving, climbing high, coming into contact with dangerous creatures.
EVNNPT assigns Power Transmission Company 3 (PTC3) to implement the task of “Researching and building a substation management system using smart devices”; Power Transmission Company 2 (PTC2) deployed “Research and build a power transmission line management system, in which artificial intelligence is applied”.
On the basis of testing from the scientific application research project of PTC3 (2010), the hotline porcelain washing technology has been completed by EVNNPT and popularly applied to replace the need to cut power lines to clean porcelain and sanitary ware. manual insulation.
In order to reduce power loss in the transmission grid, EVNNPT has equipped a metering data collection system and applied power loss and output management software (MDMS). EVNNPT has coordinated with EVNICT to build and digitize 100% of the power grid equipment database on PMIS, complete equipment modules, operating parameters, tasks, incidents, and reports.
EVNNPT has deployed the application of AI Camera technology to monitor people and monitor and check the heat generation of equipment at 500kV Thuong Tin, Duyen Hai, 220kV Khanh Hoa and Quy Nhon substations. By the end of 2022, EVNNPT has moved 115/146 220kV substations to operate under the unmanned criterion; deploying digital substation application at Thuy Nguyen 220kV substation (Hai Phong).
EVNNPT applies technology that has helped ensure reliability in transmission and discharge operation of large power sources and renewable energy sources as well as power supply for socio-economic development needs.