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Solution advantage
Existing power grids
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Wind swing tripping
The wind deviation amplitude of the conductor and insulator string is too large, resulting in breakdown discharge.
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Flashover
Guano、pollution、rain and ice form a penetrating flashover channel.
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Corridor invasion
Plants, roads, railways, and buildings invade the edge of the corridor.
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Restricted capacity expansion
Capacity expansion and transformation cannot be achieved within the original ROW range.
Applying the overall solution of CICA transmission line to upgrade existing transmission lines can not only solve the problem of wind flashover, but also significantly reduce the probability of other types of flashover accidents during the whole life cycle of the line.
Applying the overall solution of CICA transmission line to upgrade existing transmission lines can not only solve the problem of wind swing tripping, but also significantly reduce the probability of other types of flashover accidents during the whole life cycle of the line. At the same time, the overall solution of CICA transmission line can realize the horizontal transformation of the corridor (reducing the corridor width), the vertical transformation of the corridor (raising the hanging point), the voltage boosting, the current increasing transformation, etc. It is the best choice for the upgrading of overhead transmission lines.
The overall solution upgrades the existing transmission lines
New transmission line
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Large area of the tower base
The height of the tower increases, and the expansion of the iron tower roots will increase the land occupation and the construction cost.
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Line corridor width
Considering the swing gap circle of the hanging insulator, the extension length of the cross arm is increased.
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High demolition costs
The tower base occupy a large area and the line corridor width is large, resulting in high demolition costs.
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High cost of operation and maintenance
Operators are required to regularly inspect, repair and maintain the composite cross arm.
The application of the CICA transmission line overall solution to newly built overhead transmission lines can significantly solve the problems of wide corridors, large tower sizes, land acquisition problems，reduce high demolition costs and steel and basic consumption. In the operation and maintenance process, it can not only eliminate the problems of swing tripping and disconnection of insulators, reduce the probability of various flashover accidents, but also ensure that the whole life cycle of the external insulation is free from operation and maintenance (≥30 years), so as to ensure the lowest cost of the transmission line during the whole life cycle.
The application of CICA solution in new transmission lines has great advantages
