CN107064822A - Two sections of direct currents of straight-flow system mutually alter monitoring and mutually alter a Search and Orientation method - Google Patents
Two sections of direct currents of straight-flow system mutually alter monitoring and mutually alter a Search and Orientation method Download PDFInfo
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- CN107064822A CN107064822A CN201710003122.XA CN201710003122A CN107064822A CN 107064822 A CN107064822 A CN 107064822A CN 201710003122 A CN201710003122 A CN 201710003122A CN 107064822 A CN107064822 A CN 107064822A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The purpose of the present invention is intended to provide a kind of two sections of direct currents of straight-flow system and mutually alters monitoring and mutually alter a Search and Orientation method, when direct current, which occurs, for straight-flow system mutually alters, mutual branch road and the Search and Orientation of altering can be monitored on-line mutually to alter a little, direct current is eliminated and mutually alter hidden danger, it is ensured that straight-flow system safe operation.Monitoring method is mutually altered by direct current first and judges that occurring two sections of direct currents occurs the branch road mutually altered, mutually altered a little by mutually altering two sections of direct currents of Search and Orientation method Search and Orientation again, according to the size and direction for detecting grounding electric current Id, judge that the branch road mutually altered occurs for two sections of direct currents and the physical location mutually altered occurs for two sections of direct currents.
Description
Technical field
A kind of method mutually altered monitoring the present invention relates to two sections of direct currents of straight-flow system and mutually alter a Search and Orientation, belongs to direct current
The system failure monitors field.
Background technology
According to the anti-requirement arranged, " 220KV and above transformer station should install double set straight-flow systems, normally answer open loop operation ",
So the transformer station now run is divided into I sections of direct currents and II sections of direct currents, but be due to all using the straight-flow system of two sets of independent operatings
The factors such as design defect, construction reformation, equipment rebuilding, operational outfit failure, personnel's maloperation, it is more likely that occur I, II sections
Straight-flow system mistake cyclization phenomenon, that is, two sections of direct currents mutually alter phenomenon.
The form that two sections of straight-flow systems are mutually altered：Fig. 1 is that two sections of direct-flow positive poles mutually alter schematic diagram, shows as I sections of positive poles and II
Section positive pole occurs direct current and mutually alters phenomenon, is formed and mutually alters loop, the equal i.e. U1+=U2+ of two sections of direct-flow positive pole voltage-to-grounds；Fig. 2 is two
Duan Zhiliu negative poles mutually alter schematic diagram, show as I sections of negative poles and mutually alter phenomenon with II sections of negative poles generation direct currents, formation mutually alters loop, two
The equal i.e. U1-=U2- of Duan Zhiliu negative pole voltage-to-grounds；Fig. 3 is that two sections of direct current both positive and negative polarity homopolarities mutually alter schematic diagram, shows as I sections and bears
Pole occurs direct current with II sections of negative poles, I sections of positive poles and II sections of positive poles and mutually alters phenomenon simultaneously, and formation mutually alters loop, two sections of direct-flow positive poles
The equal i.e. U1+=U2+ of the voltage-to-ground and equal i.e. U1-=U2- of negative pole voltage-to-ground；Fig. 4 is that two sections of direct current both positive and negative polarity heteropolarities are mutual
Schematic diagram is altered, I sections of positive poles are shown as with II sections of negative poles while occurring direct current mutually alters phenomenon, formation mutually alters loop, two sections of DC terminals
Voltage doubles i.e. U=2U1=2U2；Generation is above-mentioned mutually when altering, and two sections of direct currents constitute loop by mutually altering branch road, cause independence
Two sections of direct currents formation cyclization phenomenon of operation, the operation to straight-flow system brings severe compromise.
The potential safety hazard that two sections of straight-flow systems are mutually altered have it is following some：First, when one point earth occurs for straight-flow system, two sections
Direct current is with hair ground connection ground connection alarm, it is impossible to distinguishes ground connection and occurs at I sections or II sections；2nd, cause under straight-flow system integral insulation
Drop, may not send out ground connection alarm signal during one point earth；3rd, straight-flow system overall distribution electric capacity is caused to increase, during one point earth
Relay protection may be caused to act；4th, when two sections of direct current both positive and negative polarity heteropolarities of generation are mutually altered, the terminal voltage of direct current can increase by one
Times, battery aging can be accelerated, jeopardize the operation safety of load equipment.
Also there is direct current mutually to alter monitoring and direct current cyclization lookup equipment in the market, but this kind equipment is in actual applications
There is problems with：One is that direct current mutually alters monitoring kind equipment and can send out cyclization alarm, but can not detect two sections of direct currents and occur cyclizations
Branch road；Two be that direct current cyclization lookup kind equipment can not realize that on-line monitoring direct current mutually alters branch road；Three be the equipment having in explanation
Introduction can monitor direct current and mutually alter in book, but when actual use or experiment, do not possess monitoring direct current and mutually alter ability.
The content of the invention
The problem of existing for technical background, the purpose of the present invention, which is intended to provide a kind of two sections of direct currents of straight-flow system, mutually alters
Monitor and mutually alter a Search and Orientation method, when direct current, which occurs, for straight-flow system mutually alters, can monitor on-line mutually to alter branch road and search and determine
Position is mutually altered a little, is eliminated direct current and is mutually altered hidden danger, it is ensured that straight-flow system safe operation.
Two sections of direct currents of straight-flow system mutually alter monitoring and mutually alter a Search and Orientation method, and it is technically characterized in that：Pass through direct current
Mutually alter monitoring method and judge that occurring two sections of direct currents occurs the branch road mutually altered, by mutually altering two sections of a Search and Orientation method Search and Orientation
Direct current is mutually altered a little.
The direct current is mutually altered monitoring method and is made up of I sections of monitoring main frames and II sections of monitoring main frames and branch road detection transformer,
When two sections of direct currents of generation are mutually altered, monitoring main frame is gone out to flow through to mutually loop Injection Signal electric current Id is altered by I sections of monitoring host supervisions
I sections of feeder line tributary signal electric current Id size and direction, go out to flow through II section feeder line tributary signals electric by II sections of monitoring host supervisions
Flow Id size and direction, the signal code of the feeder line branch road each detected according to I sections of monitoring main frames and II sections of monitoring main frames
Id size and direction, it can be determined that the branch road that I sections of direct currents and II sections of direct currents generation direct currents are mutually altered, that is, signal code Id are big
Small close two branch roads in opposite direction are exactly that the branch road mutually altered occurs for I, II sections of direct currents.
The I sections of monitoring main frame is mounted in I sections of direct currents of straight-flow system, for monitoring I sections of DC voltages, insulation and monitoring
I sections are mutually altered branch road；II sections of monitoring main frames are mounted in II sections of direct currents of straight-flow system, for monitor II sections of DC voltages, insulation and
II sections of monitoring mutually alters branch road；Branch road detection transformer includes the I sections branch road detection transformer being installed on I sections of feeder line branch roads and peace
Loaded on II sections of feeder line branch roads II sections branch road detect transformer, for induced signal electric current Id sizes and send into monitoring main frame enter
Row processing and program are calculated.
The signal code Id, is ultra-low frequency signal, and its frequency is less than 0.2Hz, is controlled by I sections of controlling switches and II sections
System switch, which carrys out selection signal electric current Id, to be injected by I sections of monitoring main frame injections or by II sections of monitoring main frames.
The I sections of controlling switch and II sections of controlling switches have 2 kinds of working conditions, i.e. the machine, alter electricity；I sections of controlling switches
Local state is put, II sections of controlling switches, which are put, alters electricity condition, signal code Id is by I sections of monitoring main frame injections simultaneously with wireless telecommunications side
Formula transmission signal electric current Id；II sections of controlling switches put local state, and I sections of controlling switches, which are put, alters electricity condition, and signal code Id is by II
Section monitoring main frame injection is simultaneously with wireless communication mode transmission signal electric current Id.
The wireless communication mode is GPRS communication modes.
So when straight-flow system I, II section direct current generation direct current is mutually altered, by the work shape for throwing controlling switch into manually
State, selection signal electric current Id flow direction, it flows to difference, and what I sections of monitoring main frames and II sections of monitoring host supervisions came out mutually alters branch
The direction of the signal code on road is different.
The I sections of controlling switch puts local state, and II sections of controlling switches, which are put, alters electricity condition, and signal code Id is by I sections of monitorings
Main frame injects, then signal code Id mutually alters bus by I sections of monitoring main frame injections, and the branch road detection flowed through on I sections of feeder line branch roads is mutual
Sensor, the branch road detection transformer mutually altered on point, II sections of feeder line branch roads, II section monitoring main frames, through the earth flow back to I section again and monitor and lead
Machine, forms current loop, it is clear that the branch road detection on branch road detection transformer and II sections of feeder line branch roads on I sections of feeder line branch roads is mutual
The electric current of sensor is same electric current, that is, signal code Id, signal code Id are mutual from the branch road detection on I sections of feeder line branch roads
The upper end of sensor is flowed into, lower end outflow, from the lower end of the branch road detection transformer on II sections of feeder line branch roads is flowed into, upper end is flowed out,
So the direction for the signal code that the I sections that I sections of monitoring host supervisions go out mutually alter branch road is positive direction, II sections of monitoring host supervisions go out
The II sections direction of signal code of mutually altering branch road be negative direction.
The II sections of controlling switch puts local state, and I sections of controlling switches, which are put, alters electricity condition, and signal code Id is by II sections of monitorings
Main frame injects, then signal code Id mutually alters bus by II sections of monitoring main frame injections, flows through the branch road detection on II sections of feeder line branch roads
Transformer, the branch road detection transformer mutually altered on point, I sections of feeder line branch roads, I section monitoring main frames, again through greatly flowing back to II sections of monitorings
Main frame, forms current loop, it is clear that flow through the branch on branch road detection I sections of feeder line branch roads of transformer and branch on II sections of feeder line branch roads
The electric current of road detection transformer is same electric current, that is, signal code Id, signal code Id are from II sections of feeder line branch roads
The anode of branch road detection transformer is flowed into, negative terminal outflow, flowed into from the negative terminal of the branch road detection transformer on I sections of feeder line branch roads,
Anode flows out, so the direction for the signal code that the I sections that I sections of monitoring host supervisions go out mutually alter branch road is negative direction, II sections of monitorings
The direction for the signal code that the II sections that host supervision goes out mutually alter branch road is positive direction.
Mutually altered through above-mentioned direct current after monitoring method judges the branch road that I sections of direct currents and II sections of direct currents are mutually altered, further basis
Mutually alter a Search and Orientation method Search and Orientation direct current mutually to alter a little, that is, occur the specific physical location that direct current is mutually altered.
It is described mutually to alter a Search and Orientation method and be made up of Portable Orientation Instrument and forcipated mutual-inductor, forcipated mutual-inductor it is secondary
Output lead access Portable Orientation Instrument, Portable Orientation Instrument receive monitoring main frame transmitting signal after, Portable Orientation Instrument with
Host signal is monitored synchronous, with forcipated mutual-inductor is along signal code Id flow detection signal code Id size and sends into hand
Formula position indicator is held to carry out signal transacting, line phase is entered with the signal code Id of reception compared, draw signal code after sequential operation
Id size and direction；The signal code Id gone out in the front-end detection mutually altered a little phase and the signal code of monitoring main frame transmitting
Id phase is identical, so the signal code Id gone out in the front-end detection mutually altered a little direction is positive direction；After mutually altering a little
The signal code Id detected phase and the signal code Id of monitoring main frame transmitting opposite in phase is held, so mutually altering a little
The direction for the signal code Id that rear end is detected is negative direction；A front end monitoring signals electric current is mutually being altered according to Portable Orientation Instrument
Id directions are with can determine whether mutually to alter specific physical bit a little mutually altering this in opposite direction feature of a rear end monitoring signals electric current Id
Put.
The Portable Orientation Instrument with monitoring host signal synchronously be by Portable Orientation Instrument receive monitoring main frame with
The signal code Id of GPRS wireless communication modes transmitting, realizes that signal is synchronous.
Brief description of the drawings
Fig. 1 is that two sections of direct-flow positive poles mutually alter schematic diagram.
Fig. 2 is that two sections of direct current negative poles mutually alter schematic diagram.
Fig. 3 is that two sections of direct current positive and negative electrodes in same polarity mutually alter schematic diagram.
Fig. 4 is that two sections of direct current both positive and negative polarity heteropolarities mutually alter schematic diagram.
Fig. 5 is that two sections of direct currents of straight-flow system of the invention mutually alter monitoring and mutually altering a negative pole for Search and Orientation method mutually alters reality
Apply a schematic diagram.
Fig. 6 is that two sections of direct currents of straight-flow system of the invention mutually alter monitoring and mutually altering a positive pole for Search and Orientation method mutually alters reality
Apply a schematic diagram.
Description of reference numerals：1st, II sections of branch roads detection transformer, 2, forcipated mutual-inductor, 3, I section branch roads detect transformers, 4,
I sections of controlling switches, 5, I sections of monitoring main frames, 6, I sections of feeder line branch roads, 7, II sections of feeder line branch roads, 8, Portable Orientation Instrument, 9, II sections
Monitor main frame, 10, II sections of controlling switches.
Embodiment
Monitoring is mutually altered to two sections of direct currents of straight-flow system of the present invention below in conjunction with the accompanying drawings and mutually a Search and Orientation method is altered
Implementation is illustrated, and Fig. 1-Fig. 4 is that two sections of direct currents mutually alter form, and two sections of direct currents of straight-flow system that Fig. 5 is the present invention mutually alter monitoring
And a mutual negative pole for Search and Orientation method of altering mutually alters embodiment schematic diagram, two sections of direct currents of straight-flow system that Fig. 6 is the present invention are mutually altered
Monitor and mutually altering a positive pole for Search and Orientation method mutually alters embodiment schematic diagram.
Two sections of direct currents of straight-flow system that the present invention is provided mutually alter monitoring and mutually alter a Search and Orientation method, and its technical characteristic exists
In：
Monitoring method is mutually altered by direct current and judges that occurring two sections of direct currents occurs the branch road mutually altered, by mutually altering a Search and Orientation method
Two sections of direct currents of Search and Orientation are mutually altered a little.
The direct current mutually alters monitoring method by I sections of monitoring main frames（5）With II sections of monitoring main frames（9）And I sections of branch road detections are mutual
Sensor（3）With II sections of branch road detection transformers（1）Constitute, when direct current, which occurs, for I sections of direct currents and II sections of direct currents mutually alters, monitor main frame
To mutually loop Injection Signal electric current Id is altered, by I sections of monitoring main frames（5）Detect and flow through I sections of feeder line branch roads（6）Signal code Id
Size and direction, by II sections of monitoring main frames（9）Detect and flow through II sections of feeder line branch roads（7）Signal code Id size and side
To according to I sections of monitoring main frames（5）With II sections of monitoring main frames（9）The tributary signal electric current Id each detected size and direction,
It may determine that the branch road that direct current is mutually altered occurs for I sections of direct currents and II sections of direct currents, that is, signal code Id sizes are close in opposite direction
Two branch roads be exactly that the branch road mutually altered occurs for I, II sections of direct currents.
The I sections of monitoring main frame（5）Be mounted in I sections of direct currents of straight-flow system, for monitor I sections of DC voltages, insulation and
I sections of direct currents of monitoring mutually alter feeder line branch road, and I sections of branch roads detect transformer（3）It is installed on I sections of feeder line branch roads（6）On, for sensing letter
Number electric current Id sizes simultaneously send into I sections of monitoring main frames（5）Carry out processing and program is calculated；II sections of monitoring main frames（9）It is mounted in straight
II sections of direct currents of streaming system, mutually alter branch road, II sections of branch road detections are mutual for monitoring II sections of DC voltages, II sections of direct currents of insulation and monitoring
Sensor（1）It is installed on II sections of feeder line branch roads（7）On, for induced signal electric current Id sizes and send into II sections of monitoring main frames（9）
Carry out processing and program is calculated.
The signal code Id, is ultra-low frequency signal, and its frequency is less than 0.2Hz, is by I sections of controlling switches（5）And II
Section controlling switch（10）It is by I sections of monitoring main frames to carry out selection signal electric current Id（5）Inject or by II sections of monitoring main frames（9）Note
Enter.
The I sections of controlling switch（4）With II sections of controlling switches（10）With 2 kinds of working conditions of identical, i.e. the machine, alter
Electricity；I sections of controlling switches（4）Put local state, II sections of controlling switches（10）Put and alter electricity condition, signal code Id is led by I sections of monitorings
Machine（5）Injection is simultaneously with wireless communication mode transmission signal electric current Id；II sections of controlling switches（10）Put local state, I sections of controls
Switch（4）Put and alter electricity condition, signal code Id is by II sections of monitoring main frames（9）Injection is simultaneously with wireless communication mode transmission signal electricity
Flow Id.
The wireless communication mode is GPRS communication modes.
So when straight-flow system I, II section direct current generation direct current is mutually altered, by the work shape for throwing controlling switch into manually
State, selection signal electric current Id flow direction, it flows to different, I sections of monitoring main frames（5）With II sections of monitoring main frames（9）Detect what is come
The direction for mutually altering the signal code of branch road is different.
The I sections of controlling switch（4）Put local state, II sections of controlling switches（10）Put and alter electricity condition, signal code Id is by I
Section monitoring main frame（5）Injection, then signal code Id is by I sections of monitoring main frames（5）Injection mutually alters bus, flows through I sections of branch road detections mutual
Sensor（3）, mutually alter point, II sections of branch roads detection transformers (1), II section monitoring main frames (9), again through greatly flowing back to I sections of monitoring main frames
(5) current loop, is formed, it is clear that flow through I sections of branch road detection transformers (3) and II sections of branch roads detect that the electric current of transformers (1) is
Same electric current, that is, signal code Id, signal code Id is flowed into from the upper end of I sections of branch road detection transformers (3), lower end stream
Go out, flowed into from the lower end of II sections of branch road detection transformers (1), upper end is flowed out, so the I sections that I sections of monitoring main frames (5) detect are mutually
The direction for altering the signal code of branch road is positive direction, and the II sections that II sections of monitoring main frame prisons (9) are measured mutually alter the signal code of branch road
Direction be negative direction.
The II sections of controlling switch (10) puts local state, and I sections of controlling switches (4) are put and alter electricity condition, signal code Id by
II sections of monitoring main frame (9) injections, then signal code Id is injected by II sections of monitoring main frames (9) mutually alters bus, flows through II sections of branch roads inspections
Transformer (1) is surveyed, point, I section branch roads detection transformers (3), I section monitoring main frames (5) is mutually altered, through the earth flows back to II sections again and monitor and lead
Machine (9), forms current loop, it is clear that flow through the electric current of II sections of branch road detection transformers (1) and I sections of branch road detection transformers (3)
For same electric current, that is, signal code Id, signal code Id is flowed into from the anode of II sections of branch road detection transformers (1), born
End outflow, from the negative terminal of I sections of branch road detection transformers (3) is flowed into, anode flows out, so the I that I sections of monitoring main frames (5) detect
The direction for the signal code that section mutually alters branch road is negative direction, and the II sections that II sections of monitoring main frames (9) detect mutually alter the signal of branch road
Sense of current is positive direction.
Mutually altered through above-mentioned direct current after monitoring method detects and occur the branch road mutually altered of two sections of direct currents, further according to mutually altering a little
The specific physical location that direct current is mutually altered occurs for two feeder line branch roads of Search and Orientation method Search and Orientation.
It is described mutually to alter a Search and Orientation method by Portable Orientation Instrument（8）And forcipated mutual-inductor（2）Constitute, by pincerlike mutual inductance
Device (2）Secondary output lead access Portable Orientation Instrument（8）, Portable Orientation Instrument（8）Receive the signal of monitoring main frame transmitting
Afterwards, Portable Orientation Instrument（8）It is synchronous with monitoring host signal, use forcipated mutual-inductor（2）Along signal code Id flow detection
Signal code Id size simultaneously sends into Portable Orientation Instrument（8）Carry out signal transacting, the signal code Id with receiving and enter line phase
Signal code Id size and direction is drawn after comparison, sequential operation；The signal code detected at the front end B for mutually altering point A
Id phase is identical with the signal code Id of monitoring main frame transmitting phase, so the letter detected at the front end B for mutually altering A points
Number electric current Id direction is positive direction；The signal code Id detected at the rear end C for mutually altering point A phase and monitoring main frame hair
The signal code Id penetrated opposite in phase, so the signal code Id detected at the rear end C for mutually altering point A direction is losing side
To.
According to Portable Orientation Instrument（8）Signal code Id directions are shown mutually altering monitoring at point A front end B（Positive direction）With
Mutually alter monitoring at point A rear end C and show signal code Id directions（Negative direction）, you can judge mutually to alter centres of the point A at B and at C.
The Portable Orientation Instrument（8）Synchronously it is that monitoring master is received by Portable Orientation Instrument (8) with monitoring host signal
The signal code Id that machine is launched with GPRS wireless communication modes, realizes that signal is synchronous.
Further regard to shown in Fig. 5, the present embodiment is mutually altered with negative pole, signal code Id is by I sections of monitoring main frames（5）Injection is same
When transmission signal electric current communicated with GPRS illustrated, I sections of direct current U1 I section feeder line branch roads（6）With II sections of direct current U2 II
Section feeder line branch road（7）Generation direct current is mutually altered, and is that two sections of direct current negative poles are mutually altered, is presented as U1-=U2-, mutually alters a little at A；Root first
Monitoring method, I sections of controlling switches are mutually altered according to direct current（4）Put local state, II sections of controlling switches（10）Put and alter electricity condition, I sections of prisons
Survey main frame（5）Detect I sections of feeder line branch roads（6）Signal code direction be positive direction, II sections of monitoring main frames（9）Detect II
Section feeder line branch road（7）Signal code direction be negative direction, according to I sections of monitoring main frames（5）Detect I sections of feeder line branch roads（6）'s
The direction of signal code（Positive direction）, II sections of monitoring main frames（9）Detect II sections of feeder line branch roads（7）Signal code direction（It is negative
Direction）, you can judge I sections of feeder line branch roads（6）With II sections of feeder line branch roads（7）Branch road is mutually altered for two sections of direct currents；Further according to mutually altering a little
Search and Orientation method, by forcipated mutual-inductor（2）Access Portable Orientation Instrument（8）, Portable Orientation Instrument（8）Receive I sections of monitoring masters
Machine（5）The GPRS signals of transmitting are realized after signal synchronization, from I sections of feeder line branch roads（6）Start to examine along signal code Id flow direction
Survey signal code Id sizes and send into Portable Orientation Instrument（8）Carry out signal transacting and program calculates signal code Id sizes
With direction, it is positive direction in the front end B for mutually the altering A points signal code Id detected direction, is detected in the rear end C for mutually altering point A
The signal code Id gone out direction is negative direction, according to Portable Orientation Instrument（8）Signal electricity is shown mutually altering point A front end B monitorings
Flow Id directions（Positive direction）With mutually altering point A rear end C monitoring display signal code Id directions（Negative direction）, you can judgement is mutually altered a little
Middle A points at B and at C.
Further regard to shown in Fig. 6, the present embodiment is mutually altered with positive pole, signal code Id is by II sections of monitoring main frames（9）Injection
Communicate transmission signal electric current to illustrate with GPRS simultaneously, I sections of direct current U1 I section feeder line branch roads（6）With II sections of direct current U2's
II sections of feeder line branch roads（7）Generation direct current is mutually altered, and is that two sections of direct-flow positive poles are mutually altered, is presented as U1+=U2+, mutually alters a little at A；First
Monitoring method, II sections of controlling switches are mutually altered according to above-mentioned direct current（10）Put local state, I sections of controlling switches（4）Put and alter electricity condition,
Then I sections of monitoring main frames（5）Detect I sections of feeder line branch roads（6）Signal code direction be negative direction, II sections of monitoring main frames（9）
Detect II sections of feeder line branch roads（7）Signal code direction be positive direction, according to I sections of monitoring main frames（5）Detect I sections of feeder line branch
Road（6）Signal code direction（Negative direction）, II sections of monitoring main frames（9）Detect II sections of feeder line branch roads（7）Signal code
Direction（Positive direction）, you can judge I sections of feeder line branch roads（6）With II sections of feeder line branch roads（7）Branch road is mutually altered for two sections of direct currents；Further according to
It is above-mentioned mutually to alter a Search and Orientation method, by forcipated mutual-inductor（2）Access Portable Orientation Instrument（8）, Portable Orientation Instrument（8）Receive
II sections of monitoring main frames（9）The GPRS signals of transmitting are realized after signal synchronization, from II sections of feeder line branch roads（7）Start along signal code
Id flow detection signal code Id sizes simultaneously send into Portable Orientation Instrument（8) carry out signal transacting and program calculates signal
Electric current Id sizes and direction, are positive direction in the front end B for mutually the altering A points signal code Id detected direction, are mutually altering point A's
The direction for the signal code Id that rear end C is detected is negative direction, according to Portable Orientation Instrument（8）Mutually altering, point A front end C monitorings are aobvious
Show signal code Id directions（Positive direction）With mutually altering point A rear end B monitoring display signal code Id directions（Negative direction）, you can sentence
It is disconnected mutually to alter point A.
Above-described embodiment is not limited for the present invention preferably embodiment, but embodiments of the present invention by above-described embodiment
System, other it is any without departing from essence of the present invention and principle it is lower change, the embodiment of simplification should be of the invention and equivalent put
Mode is changed, is included within protection scope of the present invention.
Claims (5)
1. two sections of direct currents of straight-flow system mutually alter monitoring and mutually alter a Search and Orientation method, it is technically characterized in that, mutual by direct current
Alter monitoring method and judge that occurring two sections of direct currents occurs the branch road mutually altered, it is straight by mutually altering two sections of a Search and Orientation method Search and Orientation
Stream is mutually altered a little；
The direct current mutually alters monitoring method by I sections of monitoring main frames（5）With II sections of monitoring main frames（9）And I sections of branch road detection transformers
（3）With II sections of branch road detection transformers（1）Constitute, when two sections of direct currents of generation are mutually altered, monitoring main frame alters loop injection letter to mutual
Number electric current Id, by I sections of monitoring main frames（5）Detect and flow through I sections of feeder line branch roads（6）Signal code Id size and direction, by
II sections of monitoring main frames（9）Detect and flow through II sections of feeder line branch roads（7）Signal code Id size and direction, according to I sections monitoring
Main frame（5）With II sections of monitoring main frames（9）The tributary signal electric current Id each detected size and direction, it can be determined that I sections straight
The branch road that direct current is mutually altered occurs for stream and II sections of direct currents, that is, close two branch roads in opposite direction of signal code Id sizes are exactly
The branch road mutually altered occurs for I, II sections of direct currents；
It is described mutually to alter a Search and Orientation method by Portable Orientation Instrument（8）And forcipated mutual-inductor（2）Constitute, by forcipated mutual-inductor
（2）Secondary output lead access Portable Orientation Instrument（8）, Portable Orientation Instrument（8）After the signal for receiving monitoring main frame transmitting,
Portable Orientation Instrument（8）It is synchronous with monitoring host signal, use forcipated mutual-inductor（2）From I sections of feeder line branch roads（6）Start, along letter
Number electric current Id flow detection signal code Id size simultaneously sends into Portable Orientation Instrument（8）Carry out signal transacting, with receive
Signal code Id enters size and the direction that line phase compares, signal code Id is drawn after sequential operation；Mutually altering point A front end B
The phase for the signal code Id that place is detected is identical with the signal code Id of monitoring main frame transmitting phase, so mutually altering A points
Front end B at the signal code Id direction that detects be positive direction；The signal code detected at the rear end C for mutually altering point A
Id phase and the signal code Id of monitoring main frame transmitting opposite in phase, so the letter detected at the rear end C for mutually altering point A
Number electric current Id direction is negative direction, according to Portable Orientation Instrument（8）Signal code Id is shown mutually altering monitoring at point A front end B
Direction（Positive direction）With mutually altering monitoring display signal code Id directions at point A rear end C（Negative direction）, you can judgement mutually alters point A
Centre at B and at C.
2. two sections of direct currents of straight-flow system according to being required right 1 mutually alter monitoring and mutually alter a Search and Orientation method, its technology
It is characterised by, the signal code Id, is ultra-low frequency signal, its frequency is less than 0.2Hz, is by I sections of controlling switches（4）And II
Section controlling switch（10）It is by I sections of monitoring main frames to carry out selection signal electric current Id（5）Inject or by II sections of monitoring main frames（9）Note
Enter.
3. two sections of direct currents of straight-flow system according to being required right 2 mutually alter monitoring and mutually alter a Search and Orientation method, its technology
It is characterised by, the I sections of controlling switches（4）With II sections of controlling switches（10）There are 2 kinds of working conditions, i.e. the machine, alter electricity；I
Section controlling switch（4）Put local state, II sections of controlling switches（10）Put and alter electricity condition, signal code Id is by I sections of monitoring main frames（5）
Injection is simultaneously with wireless communication mode transmission signal electric current Id；II sections of controlling switches（10）Put local state, I sections of controlling switches
（4）Put and alter electricity condition, signal code Id is by II sections of monitoring main frames（9）Injection is simultaneously with wireless communication mode transmission signal electric current
Id。
4. two sections of direct currents of straight-flow system according to being required right 3 mutually alter monitoring and mutually alter a Search and Orientation method, its technology
It is characterised by, the wireless communication mode is GPRS communication modes.
5. two sections of direct currents of straight-flow system according to being required right 1 mutually alter monitoring and mutually alter a Search and Orientation method, its technology
It is characterised by, the Portable Orientation Instrument（8）Synchronously it is by Portable Orientation Instrument with monitoring host signal（8）Receive monitoring master
The signal code Id that machine is launched with GPRS wireless communication modes, realizes that signal is synchronous.
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| CN201710003122.XA CN107064822A (en) | 2017-01-04 | 2017-01-04 | Two sections of direct currents of straight-flow system mutually alter monitoring and mutually alter a Search and Orientation method |
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| CN201710003122.XA CN107064822A (en) | 2017-01-04 | 2017-01-04 | Two sections of direct currents of straight-flow system mutually alter monitoring and mutually alter a Search and Orientation method |
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