CN108666920A - A kind of PT hand car interlock circuit, PT hand car and metering cabinet - Google Patents
A kind of PT hand car interlock circuit, PT hand car and metering cabinet Download PDFInfo
- Publication number
- CN108666920A CN108666920A CN201810772241.6A CN201810772241A CN108666920A CN 108666920 A CN108666920 A CN 108666920A CN 201810772241 A CN201810772241 A CN 201810772241A CN 108666920 A CN108666920 A CN 108666920A
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- Prior art keywords
- hand car
- hand
- trip
- travel switch
- lead
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005611 electricity Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to a kind of PT hand car interlock circuit, PT hand car and metering cabinets, PT hand car interlock circuit includes the control loop of the travel switch and lead-in circuit breaker for being arranged in PT hand car, the contact string of travel switch is located in the control loop, and also string is equipped with the control coil of the tripping relay of lead-in circuit breaker in control loop.Whether PT hand car is in two different states of correspondence course switch on operating position, and when PT hand car is on operating position, travel switch is failure to actuate, and the control coil dead electricity of the tripping relay of lead-in circuit breaker, lead-in circuit breaker does not trip；When PT hand car is detached from operating position, travel switch action, the control coil of the tripping relay of lead-in circuit breaker obtains electric, and lead-in circuit breaker tripping, end of incoming cables stops powering immediately.By this simple interlock circuit, prevent subordinate load occur still, in electricity consumption but the unmeasurable situation of electric energy, to avoid causing economic loss to power department.
Description
Technical field
The present invention relates to a kind of PT hand car interlock circuit, PT hand car and metering cabinets.
Background technology
In high-low pressure electricity system, accurate measurement is carried out sometimes for electricity consumption situation, often in incoming line switch cabinet
Metering of the face metering cabinet for electric energy is directly individually set up below.In the electricity system equipped with independent measure cabinet, in electricity consumption
In the process, if the voltage mutual inducer trolley (abbreviation PT hand car, similarly hereinafter) in metering cabinet when being out of order or accidentally being pulled out by people because that can make
Operating position is left at PT hand car, to cause PT in PT hand car to be disconnected with major loop, it will subordinate load occur still
The case where kilowatt-hour meter registration in electricity consumption but metering cabinet does not increase, this will cause economic loss to power department.
Invention content
The object of the present invention is to provide a kind of PT hand car interlock circuit, PT hand car and metering cabinets, to solve to work as PT hand car
When leaving operating position to cause that PT and major loop are disconnected in PT hand car, economic loss can be caused to ask power department
Topic.
To achieve the above object, the present invention includes following technical scheme.
A kind of PT hand car interlock circuit includes the control of the travel switch and lead-in circuit breaker for being arranged in PT hand car
The contact string in circuit processed, the travel switch is located in the control loop, and also string is equipped with inlet wire open circuit in the control loop
The control coil of the tripping relay of device.
Whether PT hand car is in two different states of correspondence course switch on operating position, when PT hand car is in working position
When setting, travel switch is failure to actuate, and the control coil dead electricity of the tripping relay of lead-in circuit breaker, lead-in circuit breaker does not trip；
When PT hand car is detached from operating position, indicate that PT is disconnected with major loop in PT hand car, travel switch action, inlet wire open circuit
The control coil of the tripping relay of device obtain it is electric, lead-in circuit breaker tripping, end of incoming cables stops powering immediately.It is simple by this
Interlock circuit, prevents subordinate load occur still, in electricity consumption but the unmeasurable situation of electric energy, to ensure that ammeter measuring numerical value
It is accurate corresponding with actual power service condition, it avoids causing economic loss to power department.
Further, the contact of the travel switch is arranged in parallel with a hand trip(ping) controlling brancher, the manual jump
String is equipped with trip button on lock controlling brancher.It can be realized by trip button and manually control lead-in circuit breaker tripping.
Further, computer control device, the trip button connection are additionally provided on the hand trip(ping) controlling brancher
The signal output end output of the signal input part of the computer control device, the computer control device connects the control line
Circle.When trip button is pressed, power supply is sent into computer control device, is handled through computer control device internal protection program judgement
Afterwards, trip signal is sent out to control coil, to make lead-in circuit breaker trip.
Further, the control coil is linked by plugs and sockets device in the control loop, is convenient for wiring.
A kind of PT hand car, including PT hand car ontology and PT hand car interlock circuit, the PT hand car interlock circuit include setting
The control loop of the travel switch and lead-in circuit breaker in PT hand car is set, the contact string of the travel switch is located at the control
On circuit processed, also string is equipped with the control coil of the tripping relay of lead-in circuit breaker in the control loop.
Further, the contact of the travel switch is arranged in parallel with a hand trip(ping) controlling brancher, the manual jump
String is equipped with trip button on lock controlling brancher.
Further, computer control device, the trip button connection are additionally provided on the hand trip(ping) controlling brancher
The signal output end output of the signal input part of the computer control device, the computer control device connects the control line
Circle.
A kind of metering cabinet, including PT hand car, the PT hand car include PT hand car ontology and PT hand car interlock circuit, described
PT hand car interlock circuit includes the travel switch being arranged in PT hand car and the control loop of lead-in circuit breaker, and the stroke is opened
The contact string of pass is located in the control loop, the also control of tripping relay of the string equipped with lead-in circuit breaker in the control loop
Coil processed.
Further, the contact of the travel switch is arranged in parallel with a hand trip(ping) controlling brancher, the manual jump
String is equipped with trip button on lock controlling brancher.
Further, computer control device, the trip button connection are additionally provided on the hand trip(ping) controlling brancher
The signal output end output of the signal input part of the computer control device, the computer control device connects the control line
Circle.
Description of the drawings
Fig. 1 is a kind of typical switchgear arrangement and operation schematic diagram；
Fig. 2 is the principle schematic of the interlock circuit of PT hand car and lead-in circuit breaker.
Specific implementation mode
Metering cabinet embodiment
The present embodiment provides a kind of metering cabinet, the metering cabinet is using switchgear arrangement shown in Fig. 1 and operation schematic diagram
In.As shown in Figure 1, primary system includes an incoming line cabinet and two outgoing line cabinets, individually one side is set up behind incoming line cabinet and is measured
Cabinet.Inlet wire cabinet breaker, i.e. lead-in circuit breaker are provided in incoming line cabinet.The partial parameters of primary system --- main bus-bar：TMY-
(80X8) is single；Rated voltage：12kV；Secondary rated voltage：DC220V；Switchgear model：KYN28A-12；Switchgear
Quantity：4 faces.Since this primary system belongs to routine techniques, just no longer illustrate here.
The PT hand car for acquiring metering voltage signal is provided in metering cabinet, PT hand car includes PT hand car ontology and PT
The interlock circuit of handcart interlock circuit, i.e. PT hand car and lead-in circuit breaker.Since PT hand car ontology belongs to routine techniques, here
It repeats no more, the interlock circuit of PT hand car and lead-in circuit breaker is specifically described in following emphasis.
Interlock circuit includes the control loop of travel switch and lead-in circuit breaker, and travel switch is arranged in PT hand car ontology
On, whether PT hand car ontology is in two different states of correspondence course switch on operating position, by detecting travel switch
State can obtain PT hand car ontology whether on operating position.Under the premise of meeting above-mentioned detection function, travel switch
Specific installation position do not limit.As shown in Fig. 2,+the KM and-KM in the control loop of lead-in circuit breaker are DC power supply,
DK is air switch.As shown in Fig. 2, the contact S9 strings of travel switch are located in the control loop, also, in the control loop also
The control coil TQ of tripping relay of the string equipped with lead-in circuit breaker.
In order to manually control lead-in circuit breaker tripping, the contact S9 of travel switch and a hand trip(ping) controlling brancher
It is arranged in parallel, string is equipped with trip button TA on the hand trip(ping) controlling brancher.Further, on the hand trip(ping) controlling brancher also
It is provided with computer control device 1n, the signal input part of trip button TA connected with computer control devices 1n, computer control device 1n
Signal output end output connection control coil TQ, as shown in Figure 2.Certainly, it can also only be gone here and there on hand trip(ping) controlling brancher
If trip button TA, it can equally realize and manually control lead-in circuit breaker tripping.In addition, control coil TQ is filled by plugs and sockets
It sets CZ to be linked into control loop, can be convenient for that the control coil TQ of circuit breaker internal and the control for being located at circuit breaker external will be located at
Circuit processed is connected to.
When normal operation, air switch DK is closed, and when PT hand car is located at operating position in metering cabinet, travel switch is motionless
Make, the contact S9 of travel switch is off, if lead-in circuit breaker needs manually control tripping, needs to press trip button
TA, DC power supply+KM are sent into computer control device 1n, micro- after computer control device 1n internal protection program judgements processing
Machine control device 1n sends out trip signal and gives control coil TQ, to make lead-in circuit breaker trip.When PT hand car is once detached from work
When making position, travel switch action, the contact S9 of travel switch will be closed immediately, and the contact S9 after closure can be directly by direct current
Source+KM is sent into control coil TQ, so that control coil TQ is obtained electric, lead-in circuit breaker direct action tripping.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, and for those of ordinary skill in the art, various changes are designed in introduction according to the present invention
The model of shape, formula, parameter do not need to spend creative work.It is right without departing from the principles and spirit of the present invention
The change, modification, replacement and modification that embodiment carries out are still fallen in protection scope of the present invention.
PT hand car embodiment
The present embodiment provides a kind of PT hand cars, are explained in detail since the PT hand car has given in above-mentioned metering cabinet,
Here it just no longer illustrates.
PT hand car interlock circuit embodiment
The present embodiment provides a kind of PT hand car interlock circuits, since the PT hand car interlock circuit has been given in above-mentioned metering cabinet
Go out and explained in detail, has just no longer illustrated here.
Claims (10)
1. a kind of PT hand car interlock circuit, which is characterized in that include the travel switch and inlet wire for being arranged in PT hand car
The contact string of the control loop of breaker, the travel switch is located in the control loop, and also string is set in the control loop
There is the control coil of the tripping relay of lead-in circuit breaker.
2. PT hand car interlock circuit according to claim 1, which is characterized in that the contact of the travel switch and a hand
Dynamic tripping controlling brancher is arranged in parallel, and string is equipped with trip button on the hand trip(ping) controlling brancher.
3. PT hand car interlock circuit according to claim 2, which is characterized in that also set on the hand trip(ping) controlling brancher
It is equipped with computer control device, the trip button connects the signal input part of the computer control device, the microcomputer control dress
The signal output end output set connects the control coil.
4. PT hand car interlock circuit according to claim 1 or 2 or 3, which is characterized in that the control coil passes through plug
Socket device is linked into the control loop.
5. a kind of PT hand car, which is characterized in that including PT hand car ontology and PT hand car interlock circuit, the PT hand car interlocking electricity
Road includes the travel switch being arranged in PT hand car and the control loop of lead-in circuit breaker, and the contact string of the travel switch is set
In the control loop, also string is equipped with the control coil of the tripping relay of lead-in circuit breaker in the control loop.
6. PT hand car according to claim 5, which is characterized in that the contact of the travel switch and a hand trip(ping) control
Branch circuit parallel connection processed is arranged, and string is equipped with trip button on the hand trip(ping) controlling brancher.
7. PT hand car according to claim 6, which is characterized in that be additionally provided with microcomputer on the hand trip(ping) controlling brancher
Control device, the trip button connect the signal input part of the computer control device, the signal of the computer control device
Output end output connects the control coil.
8. a kind of metering cabinet, including PT hand car, which is characterized in that the PT hand car includes PT hand car ontology and PT hand car interlocking
Circuit, the PT hand car interlock circuit include the travel switch being arranged in PT hand car and the control loop of lead-in circuit breaker,
The contact string of the travel switch is located in the control loop, also tripping of the string equipped with lead-in circuit breaker in the control loop
The control coil of relay.
9. metering cabinet according to claim 8, which is characterized in that the contact of the travel switch and a hand trip(ping) control
Branch circuit parallel connection processed is arranged, and string is equipped with trip button on the hand trip(ping) controlling brancher.
10. metering cabinet according to claim 9, which is characterized in that be additionally provided on the hand trip(ping) controlling brancher micro-
Machine control device, the trip button connect the signal input part of the computer control device, the letter of the computer control device
The output of number output end connects the control coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772241.6A CN108666920B (en) | 2018-07-13 | 2018-07-13 | PT handcart interlocking circuit, PT handcart and metering cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772241.6A CN108666920B (en) | 2018-07-13 | 2018-07-13 | PT handcart interlocking circuit, PT handcart and metering cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108666920A true CN108666920A (en) | 2018-10-16 |
| CN108666920B CN108666920B (en) | 2024-01-19 |
Family
ID=63788290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810772241.6A Active CN108666920B (en) | 2018-07-13 | 2018-07-13 | PT handcart interlocking circuit, PT handcart and metering cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108666920B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361167A (en) * | 2018-11-28 | 2019-02-19 | 国网河南省电力公司商丘供电公司 | 10kV/35kV middle-placed switch cabinet wheelbarrow switch travel switch moves device again |
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| CN102412516A (en) * | 2011-11-18 | 2012-04-11 | 安徽省电力公司滁州供电公司 | Operating method of handcart switch cabinet isolation baffle Z-shaped locking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109361167A (en) * | 2018-11-28 | 2019-02-19 | 国网河南省电力公司商丘供电公司 | 10kV/35kV middle-placed switch cabinet wheelbarrow switch travel switch moves device again |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108666920B (en) | 2024-01-19 |
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