CN208299433U - Voltage-time type vacuum loading switch cabinet equipment - Google Patents
Voltage-time type vacuum loading switch cabinet equipment Download PDFInfo
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- CN208299433U CN208299433U CN201820797756.7U CN201820797756U CN208299433U CN 208299433 U CN208299433 U CN 208299433U CN 201820797756 U CN201820797756 U CN 201820797756U CN 208299433 U CN208299433 U CN 208299433U
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Abstract
The utility model provides a kind of voltage-time type vacuum loading switch cabinet equipment, including vacuum load switch, first single-phase potential transformer, second single-phase potential transformer, current transformer, first electronic voltage transducer, second electronic voltage transducer and voltage-time type terminal, wherein, first single-phase potential transformer is installed on source side, first electronic voltage transducer is installed on source side, second single-phase potential transformer is installed on load side, one end of the vacuum load switch is installed on source side, the other end of the vacuum load switch respectively with the current transformer, the connection of second electronic voltage transducer, the current transformer is installed on load side, the voltage-time type terminal is connect with the vacuum load switch.The beneficial effects of the utility model are: 1) utilize field device treatment in situ, isolated fault, not depending on backstage can be realized intelligentized application function.2) it builds simple with operation and maintenance.
Description
Technical field
The utility model relates to switch cabinet equipment more particularly to a kind of voltage-time type vacuum loading switch cabinet equipment.
Background technique
It is growing to electric power energy demand with the raising of our people's living standard and expanding economy, while to defeated
The reliability of distribution and intelligent proposition requirements at the higher level, promote intelligent distribution network to carry out a new reform and development.
At present there are two types of the feeder automation statuses of country's cable system:
One, user's branch line automation: demarcation switch cabinet automatic separating fault is used；
Two, trunk line automation: using the centralized solution isolated fault section of DTU+ main website.
From the point of view of applicable cases before two meshes, due to the height dependence to communication, the backup power supply of periodic maintenance is needed,
Construction is complicated with operation and maintenance, therefore many limitations are received in popularization and application.
Summary of the invention
In order to solve the problems in the prior art, the utility model provide it is a kind of using field device treatment in situ, every
From failure, not depending on backstage can be realized intelligentized application function；Construction and the simple voltage-time type vacuum of operation and maintenance
On-load switch cabinet equipment.
The utility model provides a kind of voltage-time type vacuum loading switch cabinet equipment, including vacuum load switch,
One single-phase potential transformer, the second single-phase potential transformer, current transformer, the first electronic voltage transducer, the second electronics
Formula voltage sensor and voltage-time type terminal, wherein first single-phase potential transformer is installed on source side, and described first
Electronic voltage transducer is installed on source side, and second single-phase potential transformer is installed on load side, the vacuum-load
One end of switch is installed on source side, the other end of the vacuum load switch respectively with the current transformer, the second electronics
The connection of formula voltage sensor, the current transformer are installed on load side, the voltage-time type terminal and the vacuum-load
Switch connection.
The voltage-time type vacuum loading switch cabinet equipment further includes isolation as a further improvement of the utility model,
Switch and power supply, the vacuum load switch are connect by the disconnecting switch with the power supply.
The disconnecting switch, vacuum load switch pass through voltage-time type electricity as a further improvement of the utility model,
Magnetic mechanism is connected.
First single-phase potential transformer, the first electronic type voltage sensing as a further improvement of the utility model,
Device is connect with the power supply respectively.
First single-phase potential transformer is installed on source side A, B phase, institute as a further improvement of the utility model,
State whether the first single-phase potential transformer detection source side charges.
Second single-phase potential transformer, which is installed on, as a further improvement of the utility model, meets side B, C phase, institute
State whether the second single-phase potential transformer detection load side is charged.
The current transformer is threephase current transformer, the three-phase electricity as a further improvement of the utility model,
Current transformer is configured with measurement winding and keeps winding, and the measurement winding measures current signal for power distribution automation；It is described
Keep winding for realizing overcurrent locking.
The beneficial effects of the utility model are: through the above scheme, 1) field device treatment in situ, isolated fault are utilized,
Not depending on backstage can be realized intelligentized application function.
2) it builds simple with operation and maintenance.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model voltage-time type vacuum loading switch cabinet equipment.
Specific embodiment
The utility model is described in further detail for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of voltage-time type vacuum loading switch cabinet equipment, including vacuum load switch 1, first are single-phase
Voltage transformer 21, the second single-phase potential transformer 22, current transformer 3, the first electronic voltage transducer 41, the second electronics
Formula voltage sensor 42 and voltage-time type terminal (FTU) 5, wherein first single-phase potential transformer 21 is installed on power supply
Side, first electronic voltage transducer 41 are installed on source side, and second single-phase potential transformer 22 is installed on load
Side, one end of the vacuum load switch 1 are installed on source side, the other end of the vacuum load switch 1 respectively with the electricity
Current transformer 3, the connection of the second electronic voltage transducer 42, the voltage-time type terminal 5 connect with the vacuum load switch 1
It connects.
As shown in Figure 1, the voltage-time type vacuum loading switch cabinet equipment further includes disconnecting switch 6 and power supply, it is described
Vacuum load switch 1 is connect by the disconnecting switch 6 with the power supply.
As shown in Figure 1, the disconnecting switch 6, vacuum load switch 1 are connected by voltage-time type electromagnetic mechanism.
As shown in Figure 1, first single-phase potential transformer 21, the first electronic voltage transducer 41 respectively with the electricity
Source connection.
As shown in Figure 1, first single-phase potential transformer 21 is installed on source side A, B phase, first single-phase voltage
Mutual inductor 21 detects whether source side charges.
As shown in Figure 1, second single-phase potential transformer 22 is installed on load side B, C phase, second single-phase voltage
Whether 22 detection load side of mutual inductor is charged.
As shown in Figure 1, the current transformer 3 is threephase current transformer, the threephase current transformer is configured with survey
It measures winding and keeps winding, the measurement winding measures current signal for power distribution automation；The holding winding for realizing
Overcurrent locking.
A kind of voltage-time type vacuum loading switch cabinet equipment provided by the utility model, has the following characteristics that
1, the vacuum load switch 1 uses XGN -12 (K)/DT630-20 type vacuum load switch, is complete equipment
Execution module, using vacuum extinction, SF6 insulation, zero gauge pressure No leakage；Mating voltage-time type electromagnetic mechanism.Disconnecting switch 6
It links with the vacuum load switch 1, and ensures to close the vacuum load switch 1 again after disconnecting switch 6 is closed a floodgate；The vacuum
Divide disconnecting switch 6 again after 1 separating brake of on-load switch.
2, the first single-phase potential transformer 21, the second single-phase potential transformer 22 are respectively arranged in power supply side and load side,
First single-phase potential transformer 21 is installed on A, B two-phase, and the second single-phase potential transformer 22 is installed on B, C phase, for providing electricity
The power supply of magnetic mechanism electronic operation power and voltage-time type terminal, and detect whether power supply side and load side is charged.
3, threephase current transformer.Double winding is configured, wherein measurement winding measures current signal for power distribution automation；It protects
Winding is held for realizing overcurrent locking, when non-shut-brake without in the case where being pressed with fault current, keeping switching.
4, the first electronic voltage transducer 41, the second electronic voltage transducer 42 are respectively arranged in switch two sides, phase
When being used to 5 sampled voltage of voltage-time type terminal in zero sequential potential transformer, ground fault is determined.
5, voltage-time type terminal (FTU) 5.Relay protective scheme is as follows:
A, have pressing lock/decompression separating brake: when there is pressure in 1 side of vacuum load switch and without locking, delay 7s is (adjustable) closes
Lock, when two sides decompression and then automatic brake separating when without stream；
B, positive locking is closed a floodgate: 5s (adjustable) in 1 combined floodgate acknowledging time of vacuum load switch, if detecting route decompression,
Or detect that then separating brake and closing locking is arranged in residual voltage；
C, reversed locking is closed a floodgate: there is instantaneous voltage in 1 power side of vacuum load switch 7s (adjustable) in delay time, then
Reversed locking is closed a floodgate, and reversed power-cutting switch does not close；
D, two sides power supply blocking function: then start power supply locking in two sides when there are pressure in 1 two sides of vacuum load switch, switch is not
It can close；
E, it is then latched combined floodgate when there are pressure in 1 two sides of vacuum load switch, when 1 side decompression of vacuum load switch and the other side
Have and closes a floodgate after being then delayed when pressure；
F, be latched separating brake in short-term: route is obtained for the first time after electric time-delay closing success (Y time limit fault-free), obtains electric closing success
All acquisition control units decompression will no longer separating brake in short-term again；
G, non-breaking current protection: when the combined floodgate of vacuum load switch 1 detects zero-pressure, and fault current is negative more than vacuum
1 Breaking capacity of lotus switch, then start non-breaking current protection, and vacuum load switch 1 forbids separating brake；
H, inrush current distinguishing function: switch has inrush current distinguishing function, not malfunction when user's high-power transformer closes a floodgate；
I, protection definite value can be with substation exit protection time match；
J, each acquisition control unit module has synergistic mechanism, and after incoming switch closes a floodgate, each on same bus is opened
Pass can be by the timing time-delay closing of setting.
A kind of voltage-time type vacuum loading switch cabinet equipment provided by the utility model, action process: using " incoming call closes
The principle of lock, no pressure release ":
1) when the first single-phase potential transformer 21 has electricity, determine that source side has electricity, vacuum by voltage-time type terminal 5
1 execution module of on-load switch incoming call closes a floodgate.
2) when the first single-phase potential transformer 21,22 induced electricity source of the second single-phase potential transformer and load side lose electricity
When pressure, and fault current is sampled by current transformer 3, and signal is transferred to voltage-time type terminal 5, and electric current is more than vacuum-load
The specified drop-out current 630A of switch 1, then start non-breaking current protection, and vacuum load switch 1 forbids separating brake.
3) when 21 induced electricity source of the first single-phase potential transformer and 22 induction load side of the second single-phase potential transformer lose
When removing voltage, and fault current is sampled by current transformer 3, and signal is transferred to voltage-time type terminal 5, and electric current is less than vacuum
The specified drop-out current 630A of on-load switch 1,1 power loss separating brake of vacuum load switch.
4) ground fault is isolated: detectable route two sides residual voltage, by first the 41, second electricity of electronic voltage transducer
Minor voltage sensor 42 samples residual voltage, and signal is transferred to voltage-time type terminal 5, so that voltage-time type terminal 5 is logical
Reliable residual voltage-temporal logic is crossed, singlephase earth fault is isolated.
A kind of voltage-time type vacuum loading switch cabinet equipment provided by the utility model has the advantage that
1, from the point of view of the breakdown judge mode of switchgear, it is only necessary to which according to the power supply of distribution line, whether there is or not judged.
2, from the point of view of the maintenance of switchgear, working power is derived from route, does not need to be additionally provided；And breaker cooperation after
Guarantor's mode, although also power available transformer as it is normal when power supply, in line fault, it is necessary to rely on battery
Power supply, just can guarantee being normally carried out for communication.Battery needs periodic maintenance inspection, this makes the non-maintaining of system primary equipment
Property substantially reduces.
3, from the point of view of the mode that restores electricity of route, by the way of step -by -step switch, route can be effectively avoided because gushing
Flow and cause the malfunction of breaker.
4, structure is simple, and construction cost is low, does not need construction communication network, there is no power supplys to extract problem.Its is lower
Cost and convenient maintenance measure, are but able to achieve the automation of feeder line, while meeting the reliability of network economy and power supply, no
It loses to be conceived to development, basing on future is directly realized by the optimizer system of feeder automation.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (7)
1. a kind of voltage-time type vacuum loading switch cabinet equipment, it is characterised in that: including vacuum load switch, the first single-phase electricity
Mutual inductor, the second single-phase potential transformer, current transformer, the first electronic voltage transducer, the second electronic type voltage is pressed to pass
Sensor and voltage-time type terminal, wherein first single-phase potential transformer is installed on source side, the first electronic type electricity
Pressure sensor is installed on source side, and second single-phase potential transformer is installed on load side, and the one of the vacuum load switch
End is installed on source side, and the other end of the vacuum load switch is passed with the current transformer, the second electronic type voltage respectively
Sensor connection, the current transformer are installed on load side, and the voltage-time type terminal is connect with the vacuum load switch.
2. voltage-time type vacuum loading switch cabinet equipment according to claim 1, it is characterised in that: the voltage time
Type vacuum loading switch cabinet equipment further includes disconnecting switch and power supply, the voltage-time type vacuum load switch by it is described every
Pass is left to connect with the power supply.
3. voltage-time type vacuum loading switch cabinet equipment according to claim 2, it is characterised in that: described to keep apart
It closes, vacuum load switch is connected by voltage-time type electromagnetic mechanism.
4. voltage-time type vacuum loading switch cabinet equipment according to claim 2, it is characterised in that: described first is single-phase
Voltage transformer, the first electronic voltage transducer are connect with the power supply respectively.
5. voltage-time type vacuum loading switch cabinet equipment according to claim 1, it is characterised in that: described first is single-phase
Voltage transformer is installed on source side A, B phase, and whether the first single-phase potential transformer detection source side charges.
6. voltage-time type vacuum loading switch cabinet equipment according to claim 1, it is characterised in that: described second is single-phase
Voltage transformer is installed on load side B, C phase, and whether the second single-phase potential transformer detection load side is charged.
7. voltage-time type vacuum loading switch cabinet equipment according to claim 1, it is characterised in that: the Current Mutual Inductance
Device is threephase current transformer, and the threephase current transformer is configured with measurement winding and keeps winding, and the measurement winding is used
Current signal is measured in power distribution automation；The holding winding is for realizing overcurrent locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797756.7U CN208299433U (en) | 2018-05-25 | 2018-05-25 | Voltage-time type vacuum loading switch cabinet equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797756.7U CN208299433U (en) | 2018-05-25 | 2018-05-25 | Voltage-time type vacuum loading switch cabinet equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208299433U true CN208299433U (en) | 2018-12-28 |
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ID=64728607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820797756.7U Active CN208299433U (en) | 2018-05-25 | 2018-05-25 | Voltage-time type vacuum loading switch cabinet equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN208299433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117742A (en) * | 2020-09-30 | 2020-12-22 | 广东电网有限责任公司佛山供电局 | Device and method for effectively isolating electric user equipment fault by adopting load switch |
-
2018
- 2018-05-25 CN CN201820797756.7U patent/CN208299433U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117742A (en) * | 2020-09-30 | 2020-12-22 | 广东电网有限责任公司佛山供电局 | Device and method for effectively isolating electric user equipment fault by adopting load switch |
| CN112117742B (en) * | 2020-09-30 | 2024-01-09 | 广东电网有限责任公司佛山供电局 | Device and method for effectively isolating faults of power utilization user equipment by adopting load switch |
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