3BSE003816R1 SC520 ABB communication module sensor

Description

The design of 3BSE003816R1 SC520 traditional low-voltage equipment has both advantages and disadvantages. Non industrial
The customer’s traditional MV and LV substations are designed
It is usually based on fuse to protect each
Output low-voltage feeder line, usually with radiation
Type feeder line. The advantage of this design is to
The utility model is cheap, and can effectively prevent short circuit and overload.
On the other hand, due to the lack of remote supervision and control
Therefore, the power supply has to be restored manually,
Sometimes it takes a long time. In fact, the number of failures
After minutes or even hours, the operator may still
Nothing.

Alternative design scheme adopts electromechanical circuit breaker
Instead of fuse, in some cases, more
Good coordination and protection. Large substations may require
Two transformers replace a single transformer. These biographies
The unified design will also be subject to manual management errors and
Lack of regulatory impact.
Although the traditional design has inherent defects
Use modern technology for transformation, especially in electronics
And communications. In smart grid applications, low
Voltage grid design adopts remote monitoring and remote
Controlled instruments and switchgear, such as Stockholm
The Royal Port of Ermo. In addition, the design of power system
Take into account the redundancy with advanced switchable and monitoring functions
Based on the redundant feeder line.
In many cases, 3BSE003816R1 SC520 equipment is remotely monitored and controlled
The control can greatly shorten the power off time. Short circuit occurs
1. Comparison of low-voltage substation solutions
Outline Traditional design with supervision/with advanced switchable
(No supervision, no redundancy) controlled circuit breaker/
Switchgear redundant feeders
Simplicity+–
Initial investment is very low, medium high
Short fault identification time
Very long * very short power supply recovery time
Remote monitoring –++
Remote control –++
*- Depends on circuit breaker configuration, use of parallel circuit breakers, and type of interruption
In many cases, set
Standby remote monitoring and remote
Control can greatly shorten the disconnection
Electric time.
Remote supervision can optimize power supply
Force system operation.
Smart Applications 35
Redundant feeder lines are usually used for medium voltage distribution
In this process, the feed line is designed in series, which can
Feed from both ends. Each feeder line is divided into
Several sections, each section is broken by a separate circuit breaker or switch
Circuit breaker control. When all circuit breakers are closed, feed
The wiring can operate as a closed loop, and when one of the
When three circuit breakers are disconnected, 3BSE003816R1 SC520 operates as an open loop circuit
OK, this actually establishes two radial feeds
Line, each line is powered by a terminal station.
When a short circuit is detected, locate it according to the fault
Need to disconnect to confirm presence
Faulty circuit breaker,
The fault of feeder line
Obstacle section from power system
Disconnect while holding
Of all other loads
Normal connection.
A part of the circuit fails, and then the fault is
Turn off the protection device to eliminate the whole lower part of the feeder line
The swimming part will be disconnected from the power supply, so multiple
There is a potential impact of power failure on households. In view of the fact that
The need to minimize the number of users affected by the failure
As required, redundant feeder lines and advanced
Circuit breaker protection and other high-tech design strategies.
For example, redundant feeders are used in low-voltage power grid design
Road, then there will be two alternative paths for connecting
Connected to specific users and power system, thus greatly increasing
High grid reliability. In addition, each feeder
The circuit is divided into several sections, each section is composed of independent circuit breaker or
Switchgear control. In case of failure,
Just disconnect the fault section. This design has been approved
Intelligent circuit breaker realizes the above scheme and advanced selection
Optional scheme, which can make all
Load recovery directly connected to fault section of feeder line
Power supply is restored to the grid.
Application of redundant feed in low-voltage power grid design
The electric circuit can greatly improve the reliability of the power grid
Dependability.

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