CN207457413U - T-shaped transmission line malfunction indicates system - Google Patents
T-shaped transmission line malfunction indicates system Download PDFInfo
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- CN207457413U CN207457413U CN201721625758.XU CN201721625758U CN207457413U CN 207457413 U CN207457413 U CN 207457413U CN 201721625758 U CN201721625758 U CN 201721625758U CN 207457413 U CN207457413 U CN 207457413U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 230000007257 malfunction Effects 0.000 title claims abstract description 9
- 230000005611 electricity Effects 0.000 claims abstract description 24
- 239000013256 coordination polymer Substances 0.000 claims description 30
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
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Abstract
The utility model provides a kind of T-shaped transmission line malfunction instruction system, and for detecting the failure of T-shaped transmission line of electricity, the T-shaped transmission line of electricity using Q as node is connected to tri- side of M, N, P；The M sides of T-shaped transmission line of electricity set switch KM, the N sides of T-shaped transmission line of electricity set switch KN, the P sides of T-shaped transmission line of electricity set switch KP；Side set direction current transformer C at Q on branched line MQM, side set direction current transformer C at Q on branched line NQN, side set direction current transformer C at Q on branched line PQP；Each current transformer connects an indicating fault instrument；The system can shorten the line walking time of work about electric power personnel.
Description
Technical field
The utility model is related to power system automation technology field, especially a kind of fault-indicating system.
Background technology
With power grid strongization, intelligence, scale and information-based fast-developing, the 110kV voltages in geographic coverage
T-shaped wiring transmission line is widely present in hierarchical network.After line failure, due to complex circuit and the method for operation not
One, transmission of electricity track walker generally requires to take considerable time carries out line walking to whole circuit, it is difficult to find accurate failure in time
Position.When breaking down for the branches of T links (including node), fault branch (including node) information is obtained, is directed to
Fault branch line walking is carried out to property, can necessarily shorten circuit repair time, and restore electricity in time.
The content of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of T-shaped transmission line malfunction
Instruction system can facilitate work about electric power personnel to T-shaped polling transmission line, the line walking time of shortening work about electric power personnel.This
Utility model the technical solution adopted is that：
A kind of T-shaped transmission line malfunction instruction system, for detecting the failure of T-shaped transmission line of electricity, main improvements
It is,
T-shaped transmission line of electricity using Q as node is connected to tri- side of M, N, P；The M sides of T-shaped transmission line of electricity set switch KM, it is T-shaped defeated
The N sides of electric line set switch KN, the P sides of T-shaped transmission line of electricity set switch KP；
Side set direction current transformer C at Q on branched line MQM, side set direction current transformer at Q on branched line NQ
CN, side set direction current transformer C at Q on branched line PQP；Each current transformer connects an indicating fault instrument.
Specifically, the indicating fault instrument is equipped with：
Liquid crystal display, power switch, power interface, CMSecondary A phase currents electric current input, CMThe input of quadratic B phase current,
CMSecondary C phase currents input, CNSecondary A phase currents input, CNThe input of quadratic B phase current, CNSecondary C phase currents input, CPSecondary A
Phase current input, CPThe input of quadratic B phase current, CPSecondary C phase currents input.
Further, directional current mutual inductor C is takenM、CN、CPIt is positive direction to be directed toward node Q, and direction branched line is losing side
To.
The advantages of the utility model：
1) it can solve the problems, such as that T-shaped transmission line malfunction branch is uncertain.
2) the line walking time of work about electric power personnel can be shortened.
3) the instruction system access electric system is convenient, reliable.
Description of the drawings
Fig. 1 is the switch of the utility model and current transformer schematic view of the mounting position.
Fig. 2 is the indicating fault instrument appearance diagram of the utility model.
Fig. 3 is one wiring diagram of power supply mode of the utility model.
Fig. 4 is two wiring diagram of power supply mode of the utility model.
Fig. 5 is three wiring diagram of power supply mode of the utility model.
Fig. 6 is four wiring diagram of power supply mode of the utility model.
Fig. 7 is the indicating fault instrument program flow diagram of the utility model.
Specific embodiment
With reference to specific drawings and examples, the utility model is described in further detail.
In Fig. 1, using one-line format expression three-phase system, the T-shaped transmission line of electricity in Fig. 1 using Q as node is connected to M, N, P
Three sides.KMIt is switched for the M sides of T-shaped transmission line of electricity, KNIt is switched for the N sides of T-shaped transmission line of electricity, KPIt is opened for the P sides of T-shaped transmission line of electricity
It closes, andRepresent switch operating status,Represent switch hot stand-by duty.CMFor the side of side at Q on branched line MQ
To current transformer, CNFor the directional current mutual inductor of side at Q on branched line NQ, CPFor the direction of side at Q on branched line PQ
Current transformer.Current Transformer Secondary data are transmitted to by optical-fibre channel in the substation of M sides, and are connected to indicating fault
Instrument.
Fig. 2 shows a kind of indicating fault instrument, wherein, 1, liquid crystal display；2, power switch；3, power interface；4, CM
Secondary A phase currents electric current input；5, CMQuadratic B phase current inputs；6, CMSecondary C phase currents input；7, CNSecondary A phase currents are defeated
Enter；8, CNQuadratic B phase current inputs；9, CNSecondary C phase currents input；10, CPSecondary A phase currents input；11, CPQuadratic B is mutually electric
Stream input；12, CPSecondary C phase currents input.
The operation principle of indicating fault instrument：The current transformer with direction is all provided in three sides of node Q, it is mutual to obtain each electric current
Two sub-value of sensor, is started using jump-value of current, when jump-value of current is more than setting value, puts corresponding current transformer logical value
It is otherwise 0 for 1；Take directional current mutual inductor CM、CN、CPIt is positive direction to be directed toward node Q, and direction branched line is negative direction.
Under different power supply modes, when T-shaped transmission line of electricity breaks down, it is out of order by the identification of abort situation logic discrimination table in branch
On MQ, NQ, PQ or node Q.
In actual regional scope, the T-shaped transmission line of electricity in 110kV voltage class power grids is widely used general.T-shaped transmission of electricity
Circuit is divided into single-side power and bilateral source power supply, and needs to consider that wherein one side mains side is spare in bilateral source network
Situation.There are mainly four types of its power supply modes：First, single supply supplies both sides load；2nd, single supply supplies one side load；3rd, dual power supply is same
When supply one side load；4th, one side power supply supplies one side load, opposite side power backup in dual power supply.
It is as follows that operation principle is sketched according to four kinds of power supply modes：
1st, mode one
Mode one supplies the power supply mode of both sides load for single supply, as shown in Figure 3；M sides set power supply EM, N sides are load SN, P
Side is load SP, three sides switch KM、KN、KPRun；M sides power supply EMThe load S of N, P both sides is supplied by T-shaped transmission line of electricityN、SP；
Table 1 is in power supply mode abort situation logical value for the moment.When short trouble occurs on branch MQ, Current Mutual Inductance
The logical value of device：CMFor 0, CNFor 0, CPFor 0；When short trouble occurs on branch NQ, the logical value of current transformer：CMFor+
1, CNFor -1, CPFor 0；When short trouble occurs on branch PQ, the logical value of current transformer：CMFor+1, CNFor 0, CPFor -1；
When short trouble occurring at node Q, the logical value of current transformer：CMFor+1, CNFor 0, CPFor 0.It (is born for power supply for M sides N sides
Lotus SMWith P sides load SPPower supply mode with mode one)；
1 power supply mode one of table
2nd, mode two
Mode two supplies the power supply mode of one side load for single supply, as shown in Figure 4；M sides set power supply EM, N sides are load SN, P
Side is load SP, M sides power supply EMThe load S of P sides is supplied by T-shaped transmission line of electricityP；Switch KM、KPIt runs, switchs KNStand-by heat；
The same Fig. 1 of remaining element；
Table 2 is the abort situation logical value in power supply mode two.When short trouble occurs on branch MQ, Current Mutual Inductance
The logical value of device：CMFor 0, CNFor 0, CPFor 0；When short trouble occurs on branch NQ, the logical value of current transformer：CMFor+
1, CNFor -1, CPFor 0；When short trouble occurs on branch PQ, the logical value of current transformer：CMFor+1, CNFor 0, CPFor -1；
When short trouble occurring at node Q, the logical value of current transformer：CMFor+1, CNFor 0, CPFor 0.(N sides power supply ENFor P sides
Load SPPower supply mode with mode two)；
2 power supply mode two of table
3rd, mode three
Mode three supplies the power supply mode of one side load for dual power supply simultaneously, as shown in Figure 5；M sides set power supply EM, N sides set electricity
Source EN, P sides are load SP；Power supply EM、ENThe load S of P sides is supplied by T-shaped transmission line of electricityP；Switch KM、KN、KPRun；Remaining member
The same Fig. 1 of part；
Table 3 is the abort situation logical value in power supply mode three.When short trouble occurs on branch MQ, Current Mutual Inductance
The logical value of device：CMFor -1, CNFor+1, CPFor 0；When short trouble occurs on branch NQ, the logical value of current transformer：CM
For+1, CNFor -1, CPFor 0；When short trouble occurs on branch PQ, the logical value of current transformer：CMFor+1, CNFor+1, CP
For -1；When short trouble occurring at node Q, the logical value of current transformer：CMFor+1, CNFor+1, CPFor 0.
3 power supply mode three of table
4th, mode four
Mode four is that one side power supply is for one side load, the power supply mode of opposite side power backup in dual power supply, such as Fig. 6 institutes
Show；M sides set power supply EM, N sides set power supply EN, P sides are load SP；Power supply EMThe load S of P sides is supplied by T-shaped transmission line of electricityP；Switch
KM、KPIt runs, switchs KNStand-by heat；The same Fig. 1 of remaining element；
Table 4 is the abort situation logical value in power supply mode four.When short trouble occurs on branch MQ, Current Mutual Inductance
The logical value of device：CMFor 0, CNFor 0, CPFor 0；When short trouble occurs on branch NQ, the logical value of current transformer：CMFor+
1, CNFor -1, CPFor 0；When short trouble occurs on branch PQ, the logical value of current transformer：CMFor+1, CNFor 0, CPFor -1；
When short trouble occurring at node Q, the logical value of current transformer：CMFor+1, CNFor 0, CPFor 0.(power supply ENFor the load of P sides
SPPower supply mode with mode four)；
4 power supply mode four of table
It is above the discrimination principles of fault branch or malfunctioning node in the indicating fault instrument under different power supply modes, failure refers to
Show instrument operation principle flow chart as shown in fig. 7, mainly comprising the following steps：
1st, start；
2nd, three current transformer C are gatheredM、CN、CPSecondary data, jump-value of current reaches setting value, and startup separator refers to
Show program；
3rd, whether it is power supply mode one, if so, one corresponding abort situation of executive mode differentiates；If not power supply mode
One, then whether be power supply mode two, if so, two corresponding abort situation of executive mode differentiates；If not power supply mode two,
Whether it is so power supply mode three, if so, three corresponding abort situation of executive mode differentiates；If not power supply mode three, that
Whether it is power supply mode four, if so, four corresponding abort situation of executive mode differentiates；If not power supply mode four, then
Perform output error.
4th, fault branch or malfunctioning node are exported and is shown；
5th, terminate.
Claims (3)
1. a kind of T-shaped transmission line malfunction instruction system, for detecting the failure of T-shaped transmission line of electricity, which is characterized in that
T-shaped transmission line of electricity using Q as node is connected to tri- side of M, N, P；The M sides of T-shaped transmission line of electricity set switch KM, T-shaped transmission line of electricity
N sides set switch KN, the P sides of T-shaped transmission line of electricity set switch KP；
Side set direction current transformer C at Q on branched line MQM, side set direction current transformer C at Q on branched line NQN, point
Side set direction current transformer C at Q on branch line PQP；Each current transformer connects an indicating fault instrument.
2. T-shaped transmission line malfunction instruction system as described in claim 1, which is characterized in that
The indicating fault instrument is equipped with：
Liquid crystal display, power switch, power interface, CMSecondary A phase currents electric current input, CMThe input of quadratic B phase current, CMTwo
Secondary C phase currents input, CNSecondary A phase currents input, CNThe input of quadratic B phase current, CNSecondary C phase currents input, CPSecondary A phases
Electric current input, CPThe input of quadratic B phase current, CPSecondary C phase currents input.
3. T-shaped transmission line malfunction instruction system as described in claim 1, which is characterized in that
Take directional current mutual inductor CM、CN、CPIt is positive direction to be directed toward node Q, and direction branched line is negative direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625758.XU CN207457413U (en) | 2017-11-29 | 2017-11-29 | T-shaped transmission line malfunction indicates system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625758.XU CN207457413U (en) | 2017-11-29 | 2017-11-29 | T-shaped transmission line malfunction indicates system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207457413U true CN207457413U (en) | 2018-06-05 |
Family
ID=62276148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721625758.XU Active CN207457413U (en) | 2017-11-29 | 2017-11-29 | T-shaped transmission line malfunction indicates system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207457413U (en) |
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2017
- 2017-11-29 CN CN201721625758.XU patent/CN207457413U/en active Active
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