In this article, the editor of graphite grounding will introduce the advantages of graphite based flexible composite grounding bodies for everyone to understand:

1. Technical Economy:

Reduce LCC (Life Cycle Cost)

——One time investment, long-term stability, eliminating the need for regular testing of grounding resistance according to safety regulations, avoiding repetitive investment in grounding modification, saving manpower and material resources, and minimizing the life cycle cost (LCC)

——As of the end of 2013, there were nearly 2 million towers for 110KV and 220KV transmission lines in China

——According to the current plan for the construction and renovation of galvanized steel, the cost or renovation price per base is 5000 yuan (2000 yuan for materials+3000 yuan for earthwork), the average renovation period is 20 years, and the line life is calculated as 60 years. The LCC per base is 20000 yuan. The LCC of the entire network is 40 billion

——According to the graphite based grounding body renovation plan, the cost or renovation price per foundation is 8000 yuan (5000 yuan for materials+3000 yuan for earthwork), the average renovation period is 60 years (permanent maintenance free), and the line life is calculated as 60 years. The LCC per foundation is 8000 yuan. The LCC of the entire network is 16 billion yuan, saving 24 billion yuan. Save 2 million tons of steel

3. Social benefits of reducing emissions and haze

——Traditional grounding consumes millions of tons of steel per year, which cannot be recycled

——Resource consumption of 1 ton of steel

——Electricity consumption of 600 kWh=240kg standard coal, consumption of 3.5 tons of new water

——Pollution emissions from 1 ton of steel

——CO2：600kg

——SO2：23kg，NOx：9kg

——Carbon dust: 170kg

2. Key technologies

Key Technology 1: Corrosion Resistance

The material composition has long-term corrosion resistance

——Graphite: Good conductivity, able to withstand long-term corrosion from acidic, alkaline, and salt solutions in seawater, and can be safely used between -200 ℃ and 800 ℃

——Carbon nanotubes: high conductivity, strong corrosion resistance

——High strength fiber: heat-resistant, fire-resistant, acid and alkali resistant, and resistant to erosion by organic solvents

——No electrolytic reaction occurs under the action of stray current

Key Technology 2: Softening, tight soil contact, easy construction

1) Softening

——Poor grounding, metal grounding materials have rigidity and elasticity, while soil is plastic and deforms with moisture and temperature. Elastic plastic incompatibility becomes a symptom, making it impossible to achieve long-term stable grounding

——Can be pulled, twisted, folded, compressed, and rolled

2) Close soil contact

——Surface roughness forms fine pores that can bite and bond with soil

——Creep together with the soil, without detachment or formation of air interface

——Large cross-section, expansion and contact surface with soil

3) Easy construction

——Lightweight for transportation: can be coiled

——Less excavation volume: does not damage greenery

——Serpentine excavation: Avoid rocks and trees

——Simple backfilling: can be backfilled with mud, compact backfilling

——Crimping: No need for welding, no need for on-site requirements such as power supply and welding machine

——Anti theft: No recycling value

Key Technology 3: Improve Impact Utilization Efficiency

——A 40 × 4 flat steel with severe skin effect caused by magnetism, coupled with the influence of the shape of the flat steel and high-frequency skin effect, results in a material utilization rate of less than 10%

——Round graphite material with a size of 28, non-magnetic to alleviate its high-frequency skin effect, combined with a special process structure, resulting in a material utilization rate of over 80%

The above is the sharing of the editor of graphite grounding, hoping to help everyone!