06.06.2019

From heaven to earth

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The transfer of all aerial cables to underground in cities is going very slowly. Speed up the work, according to experts, can only be additional funding from the regional or federal budget. But these funds still remains in question. 

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Victoria Kurkova, head of the external networks department at Metropolis, gave a comment on the prospects for the transfer of air networks to underground in big Russian cities in the coming years. The material was released in the journal "Energy People", in the issue, timed to the opening of the SPIEF-2019.


Victoria believes that for residents of large cities, power lines hanging over the streets is a familiar but not very aesthetic picture. When making changes to urban plans, the absence of overhead power lines and communication lines contributes to the development of new infrastructure projects - roads, racks and parks.


The solution to this issue is difficult to call fast, because It is implemented under the conditions of existing development, but with the direct and thoughtful participation of city authorities, it is possible to coordinate plans for the development of territories, the reorganization of transport services and the distribution of capacities of existing communications, taking into account the connection of new consumers.


The work should be optimized in time so as not to redo the created environment under the “suddenly arisen” laying of the cable line.


There are a number of advantages of underground installation, which, despite the more significant costs, over time pay off, and comfort and reliability are obvious. A positive point is independence from natural disasters, causing damage to air cables and transmission cables throughout the country.


The security zone of overhead power lines is 25 meters to both sides, and when laying the cable line underground - 2 meters from the cable line. Plot security zone turns out much less.


Security zone, though not shielded, but implies that it can’t be used as a full green area, a walk through this area is unlikely to bring health benefits. Modern architecture is increasingly moving away from typical projects, each architectural bureau tries to pay special attention to the aesthetic perception of the future building, and aerial cables spoil the aesthetic appearance.


There are many examples where the architects placed courtyards not in the area of cable lines or try to place in this part of the building the premises for which the aesthetic component is not so important.


There are many places where it is impossible or extremely costly to implement such a transfer, because underground tracing often does not repeat the topology of the air network and the length may increase several times. In such cases, the balance leans in favor of maintaining the existing laying of air cables.