A kwalace da ƙarfin Danganta na Kirkiya na Iya Ƙarshen Kwarewar Gaba a Kan IEE-Business-- Reclosers

Ⅰ. Muhimman Fungciyonlarin Karkasindan Wuce

​1. Recloser: Ingantaccen Kirkiro na Sakamakun​

• ​Mahimmanci: Yadda aiki da tsari, mekanizumin da ingantaccen kontrol ta. Ya taka iya koyar gaban halittu → kirkiro → sakamakun da rike → kwalba.
• ​Mahimmanci Abubuwa:
• ​Ayoyi na Iyakokin Aiki: Tana da amfani game da ayoyi masu yawan (misali, "daya da rike + uku da rike" ko "biyu da rike + biyu da rike") don in fada halittukan da kusa da al'amuran. Misali: Aiki da rike na daya ya koyar halittukan da rike; wanda biyo na rike suna da shirin da wasu.
• ​Ba Da Amfani Game Da Kontrol na Barazan Ba: Tana da transformers da mikroprosasa a cikinsu mafi karfi da zai amfani game da current na line don koyar, ba da amfani game da relay protection panels ba.

​2. Outdoor High Voltage Circuit Breaker: Tsarin Kirkiro na Gaba​

• ​Mahimmanci: An yi da ita don kirkiro current na gaban halittu, ya danganta da relays na barazan don logika.
• ​Abubuwan Da Ba Su Mata Ba:
• Ayoyi masu kwallonsa (misali, "kirkiro → 0.3s → kirkiro → 180s → kirkiro"), ba zai iya haɗa da tsarin al'amuran network mai yawa ba.
• An buƙata da control cabinets da sources na DC, wanda ke hada da system na kwallon karshe da kudin.

 II. Mahimmanci Abubuwan na Reclosers

​ 1. Integrasia Masu Yawanci & Ingantaccen

• ​Kontrol na Jiki: Tana da amfani game da detection na current, logic judgment, da koyar na line don koyar, ya haka yana koyar da dukkan aiki, ya koyar da amfani game da mutane.
• ​Ingantaccen Algoritomin Protection:
• Inverse-time characteristic curves suka dogara da fuse ampere-second characteristics don samun coordination.
• Zero-sequence CT modules za a iya zama optional don in haɗa da accuracy na ground fault detection.

​ 2. Hira na Reliability na Power Supply

• ​Mechanism na Sakamakun Da Yawa: 3–4 attempts na sakamakun (misali, "daya da rike + uku da rike") ya sauka 80% na halittukan da rike a first attempt.

• ​Rapid Fault Isolation: Daga sectionalizers, ya koyar da lokacin da isolating faults ≤30s, ya koyar da kudin outage scope by 70%+.
• ​Backfeed Prevention: Tie recloser (QR0) delay-closing logic ya koyar da reverse power flow during substation maintenance.

​ 3. Cost Efficiency & Deployment​

• ​40% Lower TCO:
• An buƙata da relay protection panels, DC screens, da switchroom space.
• Pole-mounted installation (200–300 lbs) vs. breakers requiring 1,800–3,000 lbs + concrete foundations.
• ​3× Longer Maintenance Cycles:
• Vacuum/SF₆ types endure 10,000 operations; maintenance every 3–5 years vs. frequent spring-mechanism repairs in breakers.

​ 4. Extreme Environment Adaptability​

• ​Enhanced Weather Resistance:
• Three-phase common tank (SF₆-insulated) tolerates -40°C to 40°C.
• Epoxy-encapsulated split-phase design suits mines/coastal areas.
• ​Topology Flexibility:
• Single-phase units for rural branches; three-phase assemblies resolve neutral grounding issues.

III. Key Parameter Comparison

IV. Typical Applications

1. ​Rural/Mountainous Networks:
• Segments long overhead lines (e.g., 10kV radial feeders), replacing "breaker + protection panel" setups.
2. ​Urban Grid Automation:
• Ring Main Unit (RMU) nodes (QR0 enables automatic load transfer) with FTU for "three-remote" control.
3. ​Special Sites: Oilfields/mines (corrosion-resistant design + anti-theft password function).

V. Limitations & Solutions

1. ​Breaking Capacity Limit: Use circuit breakers for short-circuit currents >16kA.
2. ​Ungrounded Systems: Add zero-sequence CTs to improve single-phase ground fault detection.