High-Voltage SF6 Dead Tank Circuit Breaker Solution for IEE-Business Nigeria Power Grid

1. Iyipuwa na Nke Mba​

Tori nke Nigeria ji enweghị obi mmadụ na Africa, ebe ọrụ ihe nkasi ya ekwesịghị ịkọnyere mmetụta ọnwụ, akụkụ ọrụ dị oke, ma ọ bụ ịmata ụzọ ndụ ka ọtụtụ.

N'akụkọ ọrụ ihe nkasi ugwu na ịkpata ha, ọrụ ihe nkasi ọsisi ọdụ emiri ekwesịghị ịkọnyere mmetụta ọnụọgụ site na ọ gaghị ịkọnyere ọrụ ọhụrụ maka ọrụ ọhụrụ na ọ gaghị ịkọnyere ụzọ ndụ ( dịka ụzọ ndụ osimiri).

Ihe nweta n'ụwa dị iche iche, dịka South Africa na Southeast Asia, na-ekwu na ịkpa Dead Tank SF6 Circuit Breakers na-enye ọrụ dị mmetụta n'akụkọ ọrụ ihe nkasi n'ụzọ ndụ na ụzọ osimiri dị ọma, nwere ụzọ ọrụ maka Nigeria.

2. ​Ụzọ Ọrụ​

2.1 Ihe Ịkpa & Ịkpa Ọrụ​

• Ịkpa Dead Tank SF6 Circuit Breakers, ịkpa na-agba maka akụkọ ọrụ ihe nkasi 40.5kV. Aha Dead Tank SF6 Circuit Breakers na-egosi ụzọ abụọ n'otu 4,000 meters, na-egosi ụzọ ndụ Nigeria n'ime ụzọ ndụ dị iche iche, n'etiti ụlọ ọrụ na ụzọ osimiri.
• Ịkpa T2 copper contacts (purity ≥99.95%) na SF6 gas insulation (0.03–0.04MPa) na-egosi ụzọ ọrụ ọhụrụ na ịkọnyere ọrụ ọhụrụ, ịkọnyere ọrụ ọhụrụ n'ụzọ osimiri.
• Phase spacing optimized to 210mm, extending air and creepage distances to improve insulation performance in sandy/dusty environments. Similar designs have succeeded in Middle Eastern grid upgrades.

2.2 ​Installation & Maintenance Na-egosi Ụzọ​

• Design modular: Drawing on outdoor pole-mounted Dead Tank SF6 Circuit Breaker solutions, detachable semi-circular clamps and rubber strip fixation simplify installation while preventing bolt corrosion.
• Training & spare parts na-egosi ụzọ: Collaboration with international agencies (e.g., DILO) to provide SF6 gas recovery training and establish regional spare parts centers, reducing maintenance downtime.

2.3 ​Environmental & Cost Optimization​

• Compact design: Dead Tank SF6 Circuit Breakers reduce footprint by 30%, ideal for substation expansions in Nigeria’s densely populated urban areas.
• Extended lifespan and low maintenance: With a mechanical lifespan of 2,000 operations, epoxy resin insulation, and spring-operated mechanisms (CT14 type), lifecycle costs are minimized. Similar upgrades in South Africa’s ESKOM grid reduced O&M costs by 40%.

3. ​Results Achieved​

• Enhanced Reliability: In the Lagos pilot project, Dead Tank SF6 Circuit Breakers reduced failure rates by 85%, cutting annual outage times to under 2 hours, meeting IEA-recommended standards.
• Environmental Benefits: 99.9% SF6 gas recovery rate reduces greenhouse emissions, aligning with Nigeria’s commitments under the Paris Agreement.
• Economic Gains: Payback period shortened to 5 years. Leveraging India’s grid modernization experience, peak-valley tariff adjustments drove annual revenue growth of 12%.