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What are the functions outdoor auto recloser?

What are the advantages and disadvantages of outdoor auto recloser?

How is outdoor auto recloser used in a distribution system?

 

What are the functions outdoor auto recloser?

Outdoor auto recloseris an automatic voltage electric switch that is designed for overhead electricity distribution networks to detect and interrupt momentary faults. Outdoor auto recloser shuts off electric power when trouble occurs, such as a short circuit. If the problem is only temporary, the outdoor auto recloser automatically resets itself and restores the electric power.

The outdoor auto recloser senses when trouble occurs and automatically shuts off the power. If the trouble is still present, it shuts off again. If the trouble is still present after three such tries, it is programmed to view it permanent and it remains off. A power company crew repair the problem and reset the outdoor auto recloser to restore power.

 

What are the advantages and disadvantages of outdoor auto recloser?

Outdoor auto recloser eliminates the oversensitive and insensitive phases of mutation leakage.

Outdoor auto recloser can operate under conditions of low insulation level, large leakage current and poor stability.

The digital filter technology is adopted in the outdoor auto recloser, which enhances the anti-interference ability and makes the online operation more reliable.

Digital display of leakage current and fault indication is convenient for fault analysis and fault detection. Digital display of automatic opening, closing times and manual opening and closing times provides the assessment for field operators.

Outdoor auto reclosercan identify intelligently short-term leakage and permanent fault. Leakage fault disappears in a short time, outdoor auto recloser put into operation, in case of permanent fault, outdoor auto recloser blocks.

Outdoor auto recloser has the following disadvantages and causes a deterioration in the transient stability. It is unsuccessful when the power system is impacted by the fault again. It worsens the operating conditions of the circuit breaker because the short circuit current is cut off twice in a short time.

 

How is outdoor auto recloser used in a distribution system?

In distribution system, an outdoor auto recloser is a circuit breaker equipped with a mechanism that can automatically close the breaker after it has been opened due to a fault.

Outdoor auto reclosers have been around for a long time, which always are considered workhorses of distribution system overcurrent protection. A distribution reclosers is designed to interrupt both load and fault current. Also, it is designed to reclose on the fault repeatedly in a predefined sequence in an attempt to clear the fault. Outdoor auto recloser is predominantly located on the distribution feeder, though as the continuous and interrupting current ratings increase.

 

 


Post time: Dec-09-2022