3BSE004160R1 PFTL101A ABB Vertical load cell of sleeper type tensiometer

Description

PFTL101A Each circuit breaker can identify the fault current direction
And send tripping locking signal to upstream circuit breaker,
That is, the signal preventing the circuit breaker from opening. Subsequent blocking
The signal will be transmitted from the circuit breaker to the next circuit breaker in turn
To the feeder station. Circuit breaker retraction of fault section
There is no blocking signal, so it can be determined immediately
Barrier. If the feeder is fed from both ends, two
The same will happen in the direction. Finally, fault section
Two circuit breakers of are open, while all others are open
The device remains closed to ensure no direct failure

All loads affected shall be powered normally. With directional protection
The low-voltage circuit breaker for protection and logic interlocking is ABB
Proprietary technology. PFTL101A This technology was first specifically used in the ocean
Equipment and other key power supply applications, followed by R&D
The staff found another way to further apply the technology
For smart grid, this technology has become smart
An integral part of energy grid. All
ABB low-voltage air circuit breakers have integrated direction
Protection, such as Emax E1 – E6 and X1
No., the minimum rated current is 630A [1].
Reduce unnecessary power outages and minimize the impact of failures
The key requirement of is selectivity, i.e. circuit breaker identification
Energy for fault location and separate disconnection of the fault part of the power grid
The circuit breaker can identify faults
Barrier position and separate disconnection
Power grid fault part.
4 Comparison of power outage effects of different schemes
Power failure type Power failure loss Traditional solution Solution
%Solution A B
Compensation paid to residential users 50% 0% 0%
Compensation paid to enterprise users for overload 50% 0% 0%
Maintenance personnel work 100% 0% 0%
Compensation paid to residential users 50% 33% 33%
Compensation paid by short-circuit PFTL101A to enterprise users 50% 33% 0%
Maintenance personnel work 100% 100%
3 Traditional design and recommended design of low-voltage substation and distribution network
Traditional solutions
Solution A
(Partial protection)
Solution B
(Full protection)
RC RC RC
RC RC
RC RC
BC 3 BC 3 BC 1 BC 1
RC BC 2 RC BC 2
RC
RC
BC 3
BC 1
RC BC 2
M
Smart Applications 37
The design cost is the lowest and can meet the setting
requirement.
This paper will take the traditional scheme as a reference
Incoming feeder line automation solutions A and B
Compare. Suppose three enterprise users adopt
Unified scheme, that is, two non redundant feeder lines. match
The power company does not need to compensate for the power outage caused by the user
However, if the power failure is caused by the user’s power supply cable
If the damage is caused, the distribution company must compensate
Repayment. If any part of any feeder line occurs
Short circuit or overload, all users of three enterprises have power
Loss, the average compensation to be paid by the distribution company
The compensation is 50% of the total compensation.
Solution A adopts redundant feeder line design,
Use junction boxes to connect redundant feeder sections. this
One solution can fully prevent overloading and ensure
Protect some enterprises and residential users from short circuit
Sound, which means that when three redundant feeder lines
In case of power failure in one section, only the residential buildings in that section
And enterprise users will suffer power loss. Therefore, to
The average compensation paid by residential and corporate users is only
Total potential compensation in case of power failure for all users
33%.
In solution B, enterprise users can
It is connected to redundant feeder line through bus.
Each busbar adopts two incoming lines for open circuit
So that each bus can be fed in two directions.
In addition, all feed stations adopt strip direction
Intelligent circuit breaker for protection. This solution also
It can fully prevent overload and protect some residences
Users and all enterprise users are not affected by short circuit.
The probability of short circuit in the bus is very small. as
One of the three redundant feeder lines is short
Road, average paid by distribution company to residential users
The compensation is only the potential total compensation in case of power failure of all users
33% of the compensation and no payment to enterprise users
Indemnification.

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