Akwụkwọ Mmemme n'ịkwalite DC Circuit Breakers na Sekta Nkà Ụzọ Anya

I. Gwọrọ​
Site nke ịkpọta anyanwụ ume ihe ọma na ebe ịkpa ụtọ (EV) ịkpa ụtọ, ụzọ DC kewara ọnụọgụ ike maka ụdị ngwaọrụ oge ndụ. Ngwaọrụ ụbọchị AC tọrị ọ dị ka ọ ga-enye ike ịkpọta ụzọ DC n'ụzọ mmadụ, nke mere ọrụ gbasara ụzọ DC ngwaọrụ ụbọchị. Ọrụ a na-enye ngwaọrụ ụdụ ahụhie maka ụzọ ebe ibe ọhụrụ: ụzọ PV na EV ịkpa ụtọ.

​II. Ụzọ DC Ngwaọrụ Ụbọchị maka Ụzọ PV​

1. ​Ịkpọta Nsogbu Ụzọ Ahụ​
   • Ụzọ DC nke ụzọ PV nwere ike ịkpọta ụzọ DC nke ọ chọrọ 20 kA, dị ka ọ ga-ekwu ụmụ ngwaọrụ ụbọchị tọrị ọ.
   • Ụzọ arc DC nwere ike ịkpọta oku.
   • Ịkpọta ụzọ nwere ike ịkpọta ọ bụla, nke mere ọ ga-ekwu ụzọ ịkpọta ọ bụla ọfụma 2 ụgụ.
   • Ngwaọrụ ụbọchị AC nwere nsogbu maka ịkpọta arc na ụbọchị ịkpọta ụzo DC.
2. ​Ụdị Ọrụ​
   Ngwaọrụ isi: 1500V DC ngwaọrụ ụbọchị DC
   • Na-enye teknụlụjị ịkpọta arc magnetic blowout maka ịkpọta ụzọ DC mmadụ.
   • Nwere anti-islanding ngwaọrụ maka ụzọ PV maka ịkwado ọrụ grid.
   • Nwere Arc Fault Detection Module (AFCI) maka ịkwado oku arc DC.
   • Nwere ụdị modular maka ịkpọta site ụka, nke mere ọ ga-enye ụzọ ịkpọta ọ bụla.
3. ​Parametere Teknụlụ​
   • Ụzọ erụ: DC 1500V
   • Ịkpọta ụzọ: 25 kA (na-eji ụzọ DC ụzọ PV nke ọ chọrọ 20%)
   • Ụdị ngwaọrụ: IP65 (ụzọ outside), dị ka ọ ga-enwe ịkwado ụzọ harsh
   • Ụbọchị ịkpọta: ≥8,000 cycles
   • Ịkpọta ụzọ: Nwere ịkwado ụzọ remote communication na ịkpọta ụzọ.
4. ​Ụdị Ịkpọta​
   Nke a na-enye aka ụzọ PV 100MW:
   • Ịkpọta ụzọ ụbọchị ọ bụla ịkpọta ọ bụla 2 ụgụ ruo 5 ụgụ.
   • Ụbọchị ịkpọta ụzọ ụbọchị ọ bụla ịkpọta ọ bụla 45%.
   • Ụzọ DC-side fire risk ịkpọta ọ bụla 70%.

​III. Ụzọ DC Ngwaọrụ Ụbọchị maka Ụzọ EV Ịkpa Ụtọ​

1. ​Ịkpọta Nsogbu Ụzọ Ahụ​
   • Nwere ịkwado ụzọ fast-charging system 350 kW ọ bụla.
   • Ịkpọta ụzọ DC short-circuit faults n'ụzọ ịkpa ụtọ.
   • Nwere ịkwado mainstream charging protocol standards.
   • Ịkpọta temperature rise issues nke ụzọ high-current operation.
2. ​Ụdị Ọrụ​
   Ngwaọrụ isi: Liquid-cooled DC ngwaọrụ ụbọchị
   • Na-enye teknụlụjị liquid cooling maka ịkwado ụzọ current 500A ụbọchị.
   • Nwere ịkwado charging communication protocols gụnyere CCS/CHAdeMO.
   • Intelligent overtemperature ngwaọrụ (nwere ịkwado ụzọ load automatically ọ bụla 85°C).
   • Two-level protection architecture: main circuit breaker + branch protection.
3. ​Parametere Teknụlụ​
   • Ụzọ erụ: DC 1000V
   • Ụzọ current: 500A (main circuit breaker), 250A (branch protection)
   • Ụbọchị ịkpọta: <5 ms (ultra-fast protection)
   • Ụbọchị ịkpọta: 10,000 cycles (nwere ịkwado ụzọ high-frequency usage demands)
   • Ụzọ communication: CAN bus/Ethernet
4. ​Ụdị Configuration Typical​
   350 kW ịkpa ụtọ ụdị ịkpọta:
   • Main protection: 500A liquid-cooled DC ngwaọrụ ụbọchị (1 unit)
   • Branch protection: 250A DC ngwaọrụ ụbọchị (2–4 units)
   • Nwere ịkwado simultaneous fast charging maka 4 guns without interference.

​IV. Ụdị Ịkpọta Teknụlụ​

1. High breaking capacity: 25 kA breaking capacity nwere ịkwado ụzọ ụzọ DC ọ bụla.
2. Fast breaking: <5 ms ụbọchị ịkpọta ịkwado ụzọ ịkpọta ụzọ mmadụ.
3. Smart integration: Nwere ịkwado arc detection, temperature protection, na ụzọ communication functions.
4. High reliability: IP65 ụdị ngwaọrụ na ụbọchị ịkpọta ụzọ design.
5. System compatibility: Nwere ịkwado mainstream PV systems na ụzọ ịkpa ụtọ standards.

​V. Conclusion​
IEE-Business ụzọ DC ngwaọrụ ụbọchị ọrụ nwere ịkwado ụzọ ụzọ new energy sector maka ụzọ ụdị DC fault protection equipment. Ọ nwere ịkwado ụzọ ịkpọta ụzọ DC challenges, nwere ịkwado ụzọ ịkpọta ụzọ safety na ụzọ ịkpọta ụzọ operational reliability, na nwere ịkwado critical safety support maka ụzọ PV power generation na EV ịkpa ụtọ infrastructure.