CN206193109U - Intelligence phase sequence control appearance - Google Patents
Intelligence phase sequence control appearance Download PDFInfo
- Publication number
- CN206193109U CN206193109U CN201620937583.5U CN201620937583U CN206193109U CN 206193109 U CN206193109 U CN 206193109U CN 201620937583 U CN201620937583 U CN 201620937583U CN 206193109 U CN206193109 U CN 206193109U
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- circuit
- phase sequence
- phases
- relay
- interconnection switch
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Abstract
Intelligence phase sequence control appearance is including the phase sequence detection circuit who detects interconnection switch both sides phase sequence, the wrong looks locking circuit of connection in the interconnection switch closing coils return circuit, the wrong looks warning circuit of connection in the interconnection switch alarm relay return circuit. The utility model discloses use phase sequence detection and intelligent control technique, intelligent judgment main power source, stand -by power supply phase sequence, the on -line measuring control, control interconnection switch is wrong to lock mutually, stops wrong combined floodgate accident mutually.
Description
Technical field
The utility model is related to the low-voltage electrical field in distribution system, especially the two-way power supply in low-voltage distribution system
Contact cabinet phase sequence monitor.
Background technology
The contact of two-way power supply is more than two matched transformer electric system conventional important steps, and its control requires necessary
Could be closed a floodgate when power phase is identical at interconnection switch two ends, will otherwise cause misphase combined floodgate accident, endanger electric power netting safe running,
Its phase sequence monitoring intelligent level just, directly influences the reliability that dual power supply gets in touch with power distribution cabinet, especially for transformer
Economical operation, realizes the height of the dual power supply contact cabinet intelligent control level that the interconnection of two station power distribution transformer low voltage power supplys is mutually supplied
It is low, for improving power supply reliability, ensure that social stability is harmonious also significant.
At present, existing low-voltage dual power contact power distribution cabinet phase sequence monitoring has the drawback that：1st, the double electricity of most of low pressure
Source contact power distribution cabinet does not have phase sequence to monitor, and the monitoring of its phase sequence after the operation advance disposable nuclear phase of pedestrian's work still by putting into operation；
2nd, because of line maintenance, individual links are changed in the construction such as equipment, cable, cause phase sequence to change, due to no real-time online phase sequence prison
Control, easily causes misphase combined floodgate accident.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of intelligent phase sequence monitor, the phase to getting in touch with power distribution cabinet
Sequence realizes real time and on line monitoring, to solve existing low-voltage dual power contact power distribution cabinet phase sequence monitoring intelligent low degree, reliability
Property difference problem.
The purpose of this utility model is realized with following technical proposals：
Intelligent phase sequence monitor, including
The circuit of testing the phase sequence of detection interconnection switch both sides phase sequence；
It is connected to the misphase exclusive circuit in interconnection switch closing coil loop；
It is connected to the misphase warning circuit in interconnection switch alarm relay loop.
Also include housing, the circuit of testing the phase sequence, misphase exclusive circuit, misphase warning circuit are arranged in housing, lead to
Cross the binding post and external connection being arranged on housing.
The circuit of testing the phase sequence by binding post connect respectively interconnection switch upper end A phase, B phase, C phase power supply and under
The a phases at end, b phases, c phase power supplys.
The circuit of testing the phase sequence is including being connected between A phases and a phases, between B phases and b phases, between C phases and C phases
Three tunnel identicals detection control circuits, per road, detection control circuit mainly includes the rectification that RC circuits and RC circuits are connected
Operational amplification circuit and the electric bridge detection of the electric bridge detection circuit and electric bridge detection circuit connection of circuit and rectification circuit connection
The output relay circuit of circuit connection.
The output relay circuit includes being connected to the J1 of relay I between A phases and a phases, be connected to B phases and b phases it
Between the J2 of relay II, the J3 of relay III that is connected between C phases and c phases.
The J1-1 of normally-closed contact I of the J1 of relay I that the misphase exclusive circuit includes being connected in series in, the J2 of relay II it is normal
The J3-1 of normally-closed contact III of the J2-1 of closed contact II, the J3 of relay III.
The J1-2 of normally opened contact I of relay JI that the misphase warning circuit includes being connected in parallel, relay J2 it is normally opened
The J3-2 of normally opened contact III of the J2-2 of contact II, relay J3.
The beneficial effects of the utility model：1st, it is intelligent decision main power supply, standby using Phase sequence detection and intelligent control technology
With power phase, on-line checking monitoring controls interconnection switch misphase locking, prevents misphase combined floodgate accident.2nd, intelligence degree is high,
Small volume, can be easily installed on power distribution terminal bar, adapt to newly-built distribution substation and the transformation of old distribution substation；3rd, alarmed by misphase
Circuit sends alarm signal, and electrical maintenance treatment is notified in time, shortens power off time, reduces loss of outage.
Brief description of the drawings
Fig. 1 is the outline drawing of intelligent phase sequence monitor.
Fig. 2 is Phase sequence detection, alarm, the exclusive circuit for detecting interconnection switch phase sequence, wherein（A）It is to be connected to A phases with a phases
Between detection electric operation control circuit figure,（B）It is the detection electric operation control circuit figure being connected between B phases and b phases,（C）Be be connected to C phases with
Detection electric operation control circuit figure between c phases,（D）It is misphase exclusive circuit figure,（E）It is misphase warning circuit figure.
Fig. 3 is low voltage liaison net cabinet breaker control schematic diagram.
Fig. 4 is the binding post schematic diagram that intelligent phase sequence monitor inside is connected with interconnection switch.
Specific embodiment
The utility model is described in further detail below according to accompanying drawing 1 ~ 4 and specific embodiment.
The intelligent phase sequence monitor that the utility model is provided, including housing, are provided with detection low voltage liaison net cabinet in housing
The circuit of testing the phase sequence of interior interconnection switch both sides phase sequence, the misphase locking being connected in interconnection switch closing coil loop electricity
Road, the misphase warning circuit being connected in interconnection switch alarm relay loop.It is provided with outside housing and outside interconnection switch
The binding post that relevant position is attached.Intelligent phase sequence monitor housing small volume, is made, it is also possible to make using engineering plastics
With other materials, using cassette type structure, it is easily installed on power distribution terminal bar.Above-mentioned low voltage liaison net cabinet connection from it is different
The connected two-way load of transformer.
Above-mentioned circuit of testing the phase sequence connects the A phase, B phase, C phase power supply of interconnection switch QF upper ends by binding post respectively
A phases, b phases, c phase power supplys with lower end.As shown in Figure 2, Figure 4 shows, A611, B611, C611 connection contact of circuit of testing the phase sequence is opened
Close on QF upper end As, B, C three-phase circuit；A611, b611, c611 connect another road A, B, C three-phase circuit in interconnection switch QF lower ends
On.
Circuit of testing the phase sequence include be connected between A phases and a phases, between B phases and b phases, between C phases and c phases three
Road detection controls circuit, and per road, detection control circuit mainly includes rectification circuit and the rectification of RC circuits and the connection of RC circuits
Operational amplification circuit and detect what circuit was connected with electric bridge that the electric bridge detection circuit and electric bridge detection circuit of circuit connection are connected
Output relay circuit.
Such as Fig. 2（A）It is shown, to be connected to the detection electric operation control circuit figure between A phases and a phases, wherein intelligent phase sequence monitoring
The binding post A611 of instrument connects the shunt circuit of the first capacitor C1 and first resistor R1, and the shunt circuit connects the first rectification
The positive pole of diode D1；Binding post a611 connects the positive pole of the second commutation diode D2, the first rectification by second resistance R2
Diode D1, the second commutation diode D2, the 4th commutation diode D4, the 5th commutation diode D5 composition bridge rectifiers,
3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 composition electric bridge detection circuits, electric bridge detection circuit in parallel
It is connected to negative pole, the 4th commutation diode D4 of the first commutation diode D1 and the second commutation diode D2 of bridge rectifier
And the 5th commutation diode D5 positive pole between, the 3rd diode D3, the second capacitor C2,1 group of the first three-terminal voltage-stabilizing IC circuit
Into isolation filter mu balanced circuit, the connected one end of 3rd resistor R3 and the 4th resistance R4 is connected to, while being the second operation amplifier
Device IC2, the 3rd drive module IC3, the J1 of relay I provide power supply, detect that the output of bridge circuit connects the second operational amplifier
Positive and negative two input pins of IC2, the output of the second operational amplifier IC2 connects the 7th resistance R7, the 7th resistance R7 connections the
Three capacitor C3 and the 3rd drive module IC3 input pins, output connection relay I J1 of the 3rd drive module IC3；Above-mentioned electricity
Lu Zhong, the first three-terminal voltage-stabilizing IC circuit 1 is preferably LM7824, the second operational amplifier IC2 and is preferably LM358, the 3rd driving mould
Block IC3 is preferably MC1413.
As shown in Fig. 2 (B), to be connected to the detection electric operation control circuit figure between B phases and b phases, wherein intelligent phase sequence monitoring
The binding post B611 of instrument connects the shunt circuit of the 5th capacitor C5 and the 8th resistance R8, and the shunt circuit connects the 6th rectification
The positive pole of diode D6；Binding post b611 connects the positive pole of the tenth commutation diode D10, the 6th by the 14th resistance R14
Commutation diode D6, the 7th commutation diode D7, the 9th commutation diode D9, the tenth commutation diode D10 composition bridge rectifiers
Circuit, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12 composition electric bridge detection circuits, electric bridge
Detection circuit in parallel be connected to bridge rectifier the 6th commutation diode D6 and the 7th commutation diode D7 connection negative pole,
9th commutation diode D9 and the tenth commutation diode D10 connection positive pole between, the 8th diode D8, the 6th capacitor C6,
4th three-terminal voltage-stabilizing IC circuit 4 constitutes isolation filter mu balanced circuit, is connected to the 9th resistance R9 and the tenth resistance R10 is connected one
End, while for the 5th operational amplifier IC5, the 6th drive module IC6, the J2 of relay II provide power supply, detection bridge circuit
Positive and negative two input pins of the 5th operational amplifier IC5 of output connection, the output connection the 13rd of the 5th operational amplifier IC5
Resistance R13, the 13rd resistance R13 connection the 7th capacitor C7 and the 6th drive module IC6 input pins, the 6th drive module
Output connection relay II J2 of IC6；In foregoing circuit, the 4th three-terminal voltage-stabilizing IC circuit 4 is preferably LM7824, the 5th computing and puts
Big device IC5 is preferably LM358, the 6th drive module IC6 preferably MC1413.
As shown in Fig. 2 (C), to be connected to the detection electric operation control circuit figure between C phases and c phases, wherein intelligent phase sequence monitoring
The binding post C611 of instrument connects the shunt circuit of the 9th capacitor C9 and the 15th resistance R15, shunt circuit connection the tenth
The positive pole of one commutation diode D11；Binding post c611 connects the 15th commutation diode D15's by the 16th resistance R16
Positive pole, the 10th first-class diode D11, the 12nd commutation diode D12, the 14th commutation diode D14, the 15th rectification two
Pole pipe D15 constitutes bridge rectifier, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th resistance
R20 composition electric bridge detection circuits, electric bridge detection circuit in parallel be connected to bridge rectifier the 10th first-class diode D11,
The negative pole of the 12nd commutation diode D12 connections, the 14th commutation diode D14 and the 15th commutation diode D15 are connected
Between positive pole, the 13rd diode D13, the tenth capacitor C10, the composition isolation filter voltage stabilizing electricity of the 7th three-terminal voltage-stabilizing IC circuit 7
Road, is connected to the connected one end of the 17th resistance R17 and the 18th resistance R18, while being the 8th operational amplifier IC8, the 9th
Drive module IC9, the J3 of relay III provide power supply, and the 8th operational amplifier IC8's of output connection of detection bridge circuit is positive and negative
Two input pins, the output of the 8th operational amplifier IC8 connects the 21st resistance R21, the 21st resistance R21 connections the
11 capacitor C11 and the 9th drive module IC9 input pins, output connection relay III J3 of the 9th drive module IC9；On
State in circuit, the 7th three-terminal voltage-stabilizing IC circuit 7 is preferably LM7824, the 8th operational amplifier IC8 and is preferably LM358, the 9th drive
Dynamic model block IC9 is preferably MC1413.
It is misphase exclusive circuit as shown in Fig. 2 (D), the J1-1 of normally-closed contact I of its J1 of relay I including being connected in series in,
The J2-1 of normally-closed contact II of relay J2, the J3-1 of normally-closed contact III of relay J3.It is connected on interconnection switch QF closing coils
In the loop of QFX.
Misphase warning circuit includes the J1-2 of normally opened contact I, the normally opened contact of relay J2 of the relay JI being connected in parallel
The J3-2 of normally opened contact III of II J2-2, relay J3.It is connected in the loop of interconnection switch QF alarm relays 3ZJ.
Fig. 4 is the control schematic diagram of low voltage liaison net breaker.Intelligent phase sequence monitor CDK-X1 connections of the present utility model
In the control loop of breaker.
Operation principle of the present utility model and process are as follows：
When intelligent phase sequence monitor works, the phase sequence of intelligent monitoring interconnection switch QF upper and lower ports, feelings that Everything is fine
Under condition, the normally-closed contact J1-1 of the J1 of relay I, the normally-closed contact J2-1 of the J2 of relay II, the J3- of normally-closed contact III of relay J3
1 is connected in series and connects, and constitutes misphase exclusive circuit, and the wrong item exclusive circuit is connected on interconnection switch QF closing coils QFX and returns
Lu Zhong, interconnection switch can normally close a floodgate.
When interconnection switch upper and lower port has any one phase misphase, intelligent phase sequence monitor detects interconnection switch upper and lower side
Mouth phase sequence misphase, detects circuit, operational amplification circuit to start by the RC circuits of phase sequence control circuit, rectification circuit, electric bridge
The drive module of relay, drives the actuating of relay, the normally-closed contact J1-1 of the J1 of relay I, the normally-closed contact of the J2 of relay II
The J3-1 of normally-closed contact III series connection of J2-1, relay J3, arbitrarily relay disconnects all the way, is switched off interconnection switch QF closing coils
Ring current, realize locking, interconnection switch QF can not close a floodgate, while sending alarm signal, relay JI by alarm circuit
The J1-2 of normally opened contact I, the J2-2 of normally opened contact II of relay J2, the J3-2 of normally opened contact III of relay J3 be connected in parallel, appoint
Meaning normally opened contact closure, sends alarm signal, notifies maintenance.
In sum, the utility model realizes low voltage liaison net power distribution cabinet phase sequence supervisory function bit.
Above-described is only preferred embodiment of the present utility model, it is noted that for those skilled in the art
For, under the premise of the utility model general idea is not departed from, some changes and improvements can also be made, these should also be considered as
Protection domain of the present utility model.
Claims (7)
1. intelligent phase sequence monitor, it is characterised in that：Including
The circuit of testing the phase sequence of detection interconnection switch both sides phase sequence；
It is connected to the misphase exclusive circuit in interconnection switch closing coil loop；
It is connected to the misphase warning circuit in interconnection switch alarm relay loop.
2. intelligent phase sequence monitor according to claim 1, it is characterised in that：Also include housing, the Phase sequence detection electricity
Road, misphase exclusive circuit, misphase warning circuit are arranged in housing, are connected by the binding post and outside that are arranged on housing
Connect.
3. intelligent phase sequence monitor according to claim 2, it is characterised in that：The circuit of testing the phase sequence passes through terminals
Son connects interconnection switch respectively（QF）The A phase, B phase, C phase power supply of upper end and a phases of lower end, b phases, c phase power supplys.
4. intelligent phase sequence monitor according to claim 1, it is characterised in that：The circuit of testing the phase sequence includes connecting respectively
It is connected between A phases and a phases, three tunnel identical detections between B phases and b phases, between C phases and C phases control circuits, and control is detected per road
Circuit processed mainly include the electric bridge detection circuit of the rectification circuit that RC circuits and RC circuits connect and rectification circuit connection and
The operational amplification circuit of electric bridge detection circuit connection and the output relay circuit of electric bridge detection circuit connection.
5. intelligent phase sequence monitor according to claim 4, it is characterised in that：The output relay circuit includes connection
Relay I between A phases and a phases（J1）, the relay II that is connected between B phases and b phases（J2）, be connected to C phases and c phases it
Between relay III（J3）.
6. intelligent phase sequence monitor according to claim 5, it is characterised in that：The misphase exclusive circuit includes that series winding connects
The relay I for connecing（J1）Normally-closed contact I（J1-1）, relay II（J2）Normally-closed contact II（J2-1）, relay III（J3）
Normally-closed contact III（J3-1）.
7. intelligent phase sequence monitor according to claim 5, it is characterised in that：The misphase warning circuit includes in parallel company
The normally opened contact I of the relay JI for connecing（J1-2）, relay J2 normally opened contact II（J2-2）, relay J3 normally opened contact III
（J3-2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620937583.5U CN206193109U (en) | 2016-08-25 | 2016-08-25 | Intelligence phase sequence control appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620937583.5U CN206193109U (en) | 2016-08-25 | 2016-08-25 | Intelligence phase sequence control appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206193109U true CN206193109U (en) | 2017-05-24 |
Family
ID=58728888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620937583.5U Active CN206193109U (en) | 2016-08-25 | 2016-08-25 | Intelligence phase sequence control appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206193109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329031A (en) * | 2017-07-14 | 2017-11-07 | 北京送变电公司 | Contact sequencing device |
-
2016
- 2016-08-25 CN CN201620937583.5U patent/CN206193109U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329031A (en) * | 2017-07-14 | 2017-11-07 | 北京送变电公司 | Contact sequencing device |
| CN107329031B (en) * | 2017-07-14 | 2023-08-04 | 北京送变电公司 | Contact sequencing device |
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