CN108120894A - Direct-current system loop trouble-shooting system - Google Patents
Direct-current system loop trouble-shooting system Download PDFInfo
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- CN108120894A CN108120894A CN201711386539.5A CN201711386539A CN108120894A CN 108120894 A CN108120894 A CN 108120894A CN 201711386539 A CN201711386539 A CN 201711386539A CN 108120894 A CN108120894 A CN 108120894A
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The embodiment of the invention discloses a kind of direct-current system loop trouble-shooting system, including：Signal generator, tracer and signal picker；The signal generator accesses straight-flow system by two wires or three line modes, for detecting whether straight-flow system occurs loop fault；The tracer accesses straight-flow system by signal picker, and detects the earth fault or ring network fault in one or more circuits of straight-flow system.Whether the circuit that the present invention detects straight-flow system by signal generator occurs loop fault, the abort situation of straight-flow system, direction are detected by tracer and signal picker, it realizes and the loop fault in each voltage levels direct current circuit system is detected, the looped network pairing situation degree of detected straight-flow system is showed in the form of waveform, it is quick for the accuracy of judgement of circling point position, so as to quickly and accurately realize that ring network fault is searched, simple system is efficient, accuracy of detection is high, easy to operate.
Description
Technical field
The present invention relates to DC circuit detection technique field, especially a kind of direct-current system loop trouble-shooting system.
Background technology
According to national standard, " 220KV and more than substation should install double set straight-flow systems, normally answer open loop operation ".But
It is by factors such as substation (institute) construction reformation, equipment rebuilding, personnel's maloperations, it is possible to occur two sets of straight-flow systems are wrong
By mistake the phenomenon that cyclization, since the voltage status amount before and after cyclization does not change, cause the direct current monitoring arrangement of installation in station at present
Involutive ring alarm is unable to, but the harm of two sets of straight-flow system cyclizations is it will be apparent that mainly including：
1st, earth fault block sensitivity decline and protection misoperation chance increase；
2nd, two sets of straight-flow system simultaneous ground fault alarms are caused：One section of plus earth, another section of cathode ground connection；
3rd, the load " decompression " is caused, i.e., no working power may cause related tripping；
4th, the life of storage battery is shortened；
5th, straight-flow system fire etc. is caused.
In the prior art, the lookup of involutive ring failure is all to reflect two sets of direct current cyclizations indirectly extremely by other
Information.For example when DC earthing occurs, two sets of straight-flow systems report ground signalling, during road is drawn to search DC earthing
It could find that straight-flow system has loop, search procedure is typically by the way that road is drawn to search, and running equipment protective device needs to stop in short-term
With, it is dangerous larger, and than relatively time-consuming, it is higher to the competency profiling of maintenance personnel.
Therefore, the prior art needs to improve.
The content of the invention
A technical problem to be solved of the embodiment of the present invention is：A kind of direct-current system loop trouble shoot system is provided
System, including：
Signal generator, tracer and signal picker；
The signal generator accesses straight-flow system by two wires or three line modes, for detecting whether straight-flow system is sent out
Raw loop fault；
The tracer accesses straight-flow system by signal picker, and the one or more for detecting straight-flow system is returned
The earth fault or ring network fault on road.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the signal occurs
Device includes：
Main control board, display unit, LED light, interface unit；
The positive voltage-to-ground of straight-flow system busbar, the negative voltage-to-ground of the main control board reception interface unit detection, just
Earth impedance, negative earth impedance and looped network information are shown according to output to display unit after reception signal processing；
The interface unit is connected with the anode, cathode or ground terminal of DC circuit system busbar, for gathering direct current
Voltage, electric current or the impedance information of road system；
The display unit is connected with the main control board, for receiving the display letter that the main control board is sent
Number, and the current working condition of main control board is shown by LED light.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the governor circuit
Plate includes：
Signal acquisition module, analog-to-digital conversion module, signal analysis module, control module, signal generating module, signal shaping
Module, signal output module；
The signal acquisition module is connected with straight-flow system, and the direct current signal of acquisition is sent to analog-to-digital conversion module,
The analog signal of acquisition is made to become digital signal；
The digital DC signal of acquisition and the DC parameter of setting are carried out comparison judgement by the signal analysis module, are generated
The positive voltage-to-ground of busbar of straight-flow system, negative voltage-to-ground, positive earth impedance, negative earth impedance and looped network information, and be sent to
Display unit and control module；
The control module, to the looped network situation of current straight-flow system, controls the signal to occur according to signal analysis module
Module exports signal to straight-flow system；
After the signal generating module receives the instruction that the control module is sent, join according to the work of straight-flow system
Number, generates the adjustment signal to straight-flow system, and is sent to signal shaping module, and shaping is carried out to signal；
After the signal output module receives the signal for the completion processing that the signal shaping module is sent, signal is sent out
It send to straight-flow system.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the LED instructions
Lamp includes：
Power supply indicator, communication indicator light, normal work indicator light, alarm indicator；
The power supply indicator, which lights, represents that signal generator switch is opened, and starts to power；
The communication indicator light, which lights, represents that signal generator is started to work；
The normal work indicator light, which lights, represents signal generator normal work；
The alarm indicator, which lights, represents signal generator operation irregularity.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the interface unit
Including：First interface module, second interface module；
The first interface module includes the first busbar anode interface, the first busbar cathode interface, busbar interface over the ground, point
The anode, cathode and ground path of busbar Yong Yu not connected；
The second interface module includes：It is female to be respectively used to connection for second busbar anode interface, the second busbar cathode interface
The anode and cathode of line.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the fault detect
Device includes：Main control unit, push-button unit, LED display, data acquisition interface；
The main control unit is connected with the push-button unit, LED display, data acquisition interface, and the main control unit leads to
It crosses data acquisition interface and receives the straight-flow system data of the signal picker acquisition, and shown to being sent to LED after data processing
Display screen shows that the push-button unit is selected by button, and the function of the main control unit is controlled to realize.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the main control unit
Including：
Signal gathering unit, signal amplification unit, filter unit, AD conversion unit, signal processing unit, accident analysis
Unit；
After the signal gathering unit receives the straight-flow system signal that the signal picker is sent, successively by signal
After amplifying unit, filter unit, AD conversion unit, the straight-flow system signal of acquisition is amplified, is filtered, and simulation is believed
After number being converted into digital signal, signal processing unit is sent to；
The signal processing unit is sent to accident analysis list after handling the current parameters in straight-flow system signal
Member；
The current parameters for the straight-flow system that the accident analysis unit is obtained according to the signal processing unit, judge direct current
The branch of the system failure and direction, and fault message is sent to LED display and is shown.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the push-button unit
Including：Start button and function button；
When pressing the start button, the main control unit starts to analyze the failure of the straight-flow system circuit of current detection
Situation；
When pressing the function button, the main control unit is in " looped network lookup " operating mode, for direct current
The loop fault of road system is detected；When bouncing the function button, the main control unit is in " earthing detection " work
Pattern is detected for the earth fault to straight-flow system circuit.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the main control unit
Alarm Unit is further included, there are loop faults when the accident analysis unit monitors the electric signal of current straight-flow system circuit
When, the Alarm Unit sends alarm prompt.
In another embodiment based on the above-mentioned direct-current system loop trouble-shooting system of the present invention, the signal acquisition
Device includes：
Accommodate module, signal acquisition module, output module；
The blessing module is forceps-like arrangement, for accommodating straight-flow system busbar anode, cathode or branch anode, negative line
Road；
The signal acquisition module is connected with the blessing module, for gathering the straight-flow system that the blessing module accommodates
The electric signal of circuit；
The output module is connected with the signal acquisition module, for the direct current system for gathering the signal acquisition module
Unite circuit electric signal output to tracer.
Compared with prior art, the present invention has the following advantages：
Whether the circuit that the present invention detects straight-flow system by signal generator occurs loop fault, passes through tracer
Abort situation, direction with signal picker detection straight-flow system, realize to the ring in each voltage levels direct current circuit system
Road fault detect is showed the looped network pairing situation degree of detected straight-flow system, for circling point position in the form of waveform
The accuracy of judgement put is quick, and so as to quickly and accurately realize that ring network fault is searched, simple system is efficient, and accuracy of detection is high, operation
It is convenient.
Below by drawings and examples, technical scheme is described in further detail.
Description of the drawings
The attached drawing of a part for constitution instruction describes the embodiment of the present invention, and is used to explain together with description
The principle of the present invention.
Referring to the drawings, according to following detailed description, the present invention can be more clearly understood, wherein：
Fig. 1 is the structure diagram of one embodiment of the direct-current system loop trouble-shooting system of the present invention；
Fig. 2 is the structure diagram of another embodiment of the direct-current system loop trouble-shooting system of the present invention；
Fig. 3 is the structure diagram of another embodiment of the direct-current system loop trouble-shooting system of the present invention；
Fig. 4 is the structure diagram of another embodiment of the direct-current system loop trouble-shooting system of the present invention；
Fig. 5 is the structure diagram of another embodiment of the direct-current system loop trouble-shooting system of the present invention.
In figure：1 signal generator, 11 main control boards, 111 signal acquisition modules, 112 analog-to-digital conversion modules, 113 signals
Analysis module, 114 control modules, 115 signal generating modules, 116 signal shaping modules, 117 signal output modules, 12 displays are single
Member, the amplification of 13LED indicator lights, 14 interface units, 2 tracers, 21 main control units, 211 signal gathering units, 212 signals
Unit, 213 filter units, 214 AD conversion units, 215 signal processing units, 216 accident analysis units, 217 Alarm Units,
22 push-button units, 23LED display screens, 24 data acquisition interfaces, 3 signal pickers.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
Simultaneously, it should be appreciated that for ease of description, the size of the various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
It is pointed out that the unit module in the present invention is hardware module, which part module although with
Information processing capability, according to different design requirements, it may be necessary to corresponding software be coordinated to realize, still, these softwares are equal
For conventionally known software or well known technology.Involved various control units, collecting unit, encoder etc. can in the application
To be achieved using application-specific integrated circuit and peripheral circuit, i.e., existing chip is realized or used using pure hardware mode
It realizes with peripheral circuit, is worked by the software that existing software is loaded on chip or is realized according to existing method.
The inventive point of the present invention is the installation of modules, unit, the hardware annexation of device and each hardware
Variation of position etc. and the distinctive connection relation of formation and additional space relation, without auxiliary when using application-specific integrated circuit
It helps software that can also realize, even if needing corresponding software in specific utilization, is also intended only as the present invention in concrete application field
Coordinated in scape with other parts, coordinated, more preferably to realize the effect of the present invention in the application, the inventive point with the present invention
It is unrelated, meanwhile, if coordinate software using existing chip come work, used software, processing method are existing soft
Part and method, the invention effect and destination that the present invention is realized are realized also not dependent on software, but pass through hardware construction
It improves to realize goal of the invention, also, the realization of invention effect and purpose that the present invention is realized is also not dependent on software, but
Goal of the invention is realized by the improvement of hardware construction, and scope of the present invention is not related to software in itself, and
The only connection relation of various pieces and relative tertiary location relation.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the structure diagram of one embodiment of the direct-current system loop trouble-shooting system of the present invention, such as Fig. 1 institutes
Show, the direct-current system loop trouble-shooting system of the embodiment includes：
Signal generator 1, tracer 2 and signal picker 3；
The signal generator 1 accesses straight-flow system by two wires or three line modes, for whether detecting straight-flow system
Generation loop fault；
The tracer 2 accesses straight-flow system by signal picker 3, and detects the one or more of straight-flow system
The earth fault or ring network fault in circuit.
The straight-flow system ring network fault detection of the present invention, when straight-flow system generation ring network fault, will be believed using pingpong theory
Number generator 1 accesses DC power system, and signal generator 1 is from the positive and negative busbar of trend DC power system alternately access (frequency
For 0.167HZ) resistance of 200K Ω, appropriate systems detection of the limiting voltage within ± 5V, on ultralow frequency of the system without influence
Signal, micro current signal.Tracer 2 detects the direct current signal leakage current of each circuit insulation against ground by signal picker 3,
And simulative display looped network situation, most looped network and node accurate positionin at last.
Fig. 2 be the present invention direct-current system loop trouble-shooting system another embodiment structure diagram, such as Fig. 2
Shown, the signal generator 1 includes：
Main control board 11, display unit 12, LED light 13, interface unit 14；
The positive voltage-to-ground of straight-flow system busbar of 11 reception interface unit 14 of the main control board detection, negative electricity over the ground
Pressure, positive earth impedance, negative earth impedance and looped network information are shown according to output to display unit 12 after reception signal processing；
The interface unit 14 is connected with the anode, cathode or ground terminal of DC circuit system busbar, for gathering direct current
Voltage, electric current or the impedance information of circuit system；
The display unit 12 is connected with the main control board 11, for receiving the transmission of main control board 11
It shows signal, and passes through LED light 13 and show the current working condition of main control board 11.
The LED light 13 includes：
Power supply indicator, communication indicator light, normal work indicator light, alarm indicator；
The power supply indicator, which lights, represents that signal generator switch is opened, and starts to power；
The communication indicator light, which lights, represents that signal generator is started to work；
The normal work indicator light, which lights, represents signal generator normal work；
The alarm indicator, which lights, represents signal generator operation irregularity.
The interface unit 12 includes：First interface module, second interface module；
The first interface module includes the first busbar anode interface, the first busbar cathode interface, busbar interface over the ground, point
The anode, cathode and ground path of busbar Yong Yu not connected；
The second interface module includes：It is female to be respectively used to connection for second busbar anode interface, the second busbar cathode interface
The anode and cathode of line.
The first busbar anode interface of the first interface module of signal generator 1 is connect into one section of positive bus-bar when looped network is searched,
First busbar cathode interface connects one section of negative busbar, and interfacing ground line, the second busbar anode of second interface module connect busbar over the ground
Mouth connects two sections of positive bus-bars, and the second busbar cathode interface connects two sections of negative busbars.
The straight-flow system of 1 adaptive different voltages grade of signal generator.
System bears voltage-to-ground without ring network fault, the positive voltage-to-ground of the display one section of busbar of access of display unit 12, just over the ground
Impedance, the positive voltage-to-ground of two sections of busbares of negative earth impedance and access, negative voltage-to-ground, positive earth impedance, negative earth impedance are
No looped network：It is no.When system has ring network fault, while signal generator 1 is to system output signal, while display unit 12 is aobvious
Show the positive voltage-to-ground of one section of busbar of access, negative voltage-to-ground, two sections of busbar faces of positive earth impedance, negative earth impedance and access
Ground voltage, negative voltage-to-ground, positive earth impedance, negative earth impedance, if looped network：It is.
Fig. 3 be the present invention direct-current system loop trouble-shooting system another embodiment structure diagram, such as Fig. 3
Shown, the main control board 11 includes：
Signal acquisition module 111, analog-to-digital conversion module 112, signal analysis module 113, control module 114, signal occur
Module 115, signal shaping module 116, signal output module 117；
The signal acquisition module 111 is connected with straight-flow system, and the direct current signal of acquisition is sent to analog-to-digital conversion mould
Block 112 makes the analog signal of acquisition become digital signal；
The digital DC signal of acquisition and the DC parameter of setting are carried out comparison judgement by the signal analysis module 113,
The positive voltage-to-ground of busbar of straight-flow system, negative voltage-to-ground are generated, positive earth impedance bears earth impedance and looped network information, concurrently
It send to display unit 12 and control module 114；
The control module 114, to the looped network situation of current straight-flow system, controls the letter according to signal analysis module 113
Number occur module 115 to straight-flow system export signal；
After the signal generating module 115 receives the instruction that the control module 114 is sent, according to the work of straight-flow system
Make parameter, generate the adjustment signal to straight-flow system, and be sent to signal shaping module 116, shaping is carried out to signal；
It, will after the signal output module 117 receives the signal for the completion processing that the signal shaping module 116 is sent
Signal is sent to straight-flow system.
Fig. 4 be the present invention direct-current system loop trouble-shooting system another embodiment structure diagram, such as Fig. 4
Shown, the tracer 2 includes：Main control unit 21, push-button unit 22, LED display screens 23, data acquisition interface 24；
The main control unit 21 is connected with the push-button unit 22, LED display 23, data acquisition interface 24, the master
Control unit 21 receives the straight-flow system data of the acquisition of signal picker 3 by data acquisition interface 24, and to data processing
After be sent to LED display 23 and show, the push-button unit 24 is selected by button, controls the function of the main control unit 21
It realizes.
The push-button unit 22 includes：Start button and function button；
When pressing the start button, the main control unit 21 starts to analyze the event of the straight-flow system circuit of current detection
Barrier situation；
When pressing the function button, the main control unit 21 is in " looped network lookup " operating mode, for direct current
The loop fault of circuit system is detected；When bouncing the function button, the main control unit 21 is in " earthing detection "
Operating mode is detected for the earth fault to straight-flow system circuit.
Tracer 2 includes three kinds of modes to the detection method of straight-flow system ring network fault：
(1) directly detect, the various indicator lights of tracer are in normal operating conditions, press start button, be
System starts to carry out ring network fault detection to DC circuit system；
(2) when positive and negative polar curve cannot use simultaneously during signal picker 3, using the detection method of " pincers are single ", if
Anode looped network clamps signal picker 3 on electrode cable, presses start button and is detected；If cathode looped network, then clamp
On cathode cable；
(3) detection when a plurality of return line binds together clamps signal picker 3 on this bundle cable, signal picker 3
Blessing module be closed completely, press start button and be detected；If it is " non-looped network " to show, illustrate this detected bundle
Cable is all without earth fault or no ring network fault；If it is " looped network " to show, illustrate have in this detected bundle cable
Primary Ioops or multiloop have earth fault or ring network fault, it is necessary to by the bundle cable separate detection, are detected by root.
Fig. 5 be the present invention direct-current system loop trouble-shooting system another embodiment structure diagram, such as Fig. 5
Shown, the main control unit 21 includes：
Signal gathering unit 211, signal amplification unit 212, filter unit 213, AD conversion unit 214, signal processing
Unit 215, accident analysis unit 216；
After the signal gathering unit 211 receives the straight-flow system signal that the signal picker 3 is sent, pass through successively
After signal amplification unit 212, filter unit 213, AD conversion unit 214, the straight-flow system signal of acquisition is amplified, is filtered
Ripple, and after converting analog signals into digital signal, it is sent to signal processing unit 215；
The signal processing unit 215 is sent to accident analysis after handling the current parameters in straight-flow system signal
Unit 216；
The current parameters for the straight-flow system that the accident analysis unit 216 is obtained according to the signal processing unit 215, sentence
The branch of disconnected DC system fault and direction, and fault message is sent to LED display 23 and is shown.
The main control unit 21 further includes Alarm Unit 217, when the accident analysis unit 216 monitors current direct current system
For the electric signal of system circuit there are during loop fault, the Alarm Unit 217 sends alarm prompt.
The signal picker 3 includes：
Accommodate module, signal acquisition module, output module；
The blessing module is forceps-like arrangement, for accommodating straight-flow system busbar anode, cathode or branch anode, negative line
Road；
The signal acquisition module is connected with the blessing module, for gathering the straight-flow system that the blessing module accommodates
The electric signal of circuit；
The output module is connected with the signal acquisition module, for the direct current system for gathering the signal acquisition module
Unite circuit electric signal output to tracer.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with its
The difference of its embodiment, the same or similar part cross-reference between each embodiment.For system embodiment
For, since it is substantially corresponding with embodiment of the method, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
It defends oneself bright.
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those of ordinary skill in the art is enable to manage
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (10)
1. a kind of direct-current system loop trouble-shooting system, which is characterized in that including：
Signal generator, tracer and signal picker；
The signal generator accesses straight-flow system by two wires or three line modes, for detect straight-flow system whether initial ring
Road failure；
The tracer accesses straight-flow system by signal picker, and detect one or more circuits of straight-flow system
Earth fault or ring network fault.
2. direct-current system loop trouble-shooting system according to claim 1, which is characterized in that the signal generator bag
It includes：
Main control board, display unit, LED light, interface unit；
The positive voltage-to-ground of straight-flow system busbar, the negative voltage-to-ground of the main control board reception interface unit detection, just over the ground
Impedance, negative earth impedance and looped network information are shown according to output to display unit after reception signal processing；
The interface unit is connected with the anode, cathode or ground terminal of DC circuit system busbar, for gathering DC circuit system
Voltage, electric current or the impedance information of system；
The display unit is connected with the main control board, for receiving the display signal that the main control board is sent, and
The current working condition of main control board is shown by LED light.
3. direct-current system loop trouble-shooting system according to claim 2, which is characterized in that the main control board bag
It includes：
Signal acquisition module, analog-to-digital conversion module, signal analysis module, control module, signal generating module, signal shaping mould
Block, signal output module；
The signal acquisition module is connected with straight-flow system, and the direct current signal of acquisition is sent to analog-to-digital conversion module, makes to adopt
The analog signal of collection becomes digital signal；
The digital DC signal of acquisition and the DC parameter of setting are carried out comparison judgement by the signal analysis module, generate direct current
The positive voltage-to-ground of busbar of system, negative voltage-to-ground, positive earth impedance, negative earth impedance and looped network information, and it is sent to display
Unit and control module；
The control module, to the looped network situation of current straight-flow system, controls the signal generating module according to signal analysis module
Signal is exported to straight-flow system；
It is raw according to the running parameter of straight-flow system after the signal generating module receives the instruction that the control module is sent
The adjustment signal of paired straight-flow system, and signal shaping module is sent to, shaping is carried out to signal；
After the signal output module receives the signal for the completion processing that the signal shaping module is sent, send the signal to
Straight-flow system.
4. direct-current system loop trouble-shooting system according to claim 2, which is characterized in that the LED light bag
It includes：
Power supply indicator, communication indicator light, normal work indicator light, alarm indicator；
The power supply indicator, which lights, represents that signal generator switch is opened, and starts to power；
The communication indicator light, which lights, represents that signal generator is started to work；
The normal work indicator light, which lights, represents signal generator normal work；
The alarm indicator, which lights, represents signal generator operation irregularity.
5. direct-current system loop trouble-shooting system according to claim 2, which is characterized in that the interface unit bag
It includes：First interface module, second interface module；
The first interface module includes the first busbar anode interface, the first busbar cathode interface, busbar interface over the ground, uses respectively
In anode, cathode and the ground path of connection busbar；
The second interface module includes：Second busbar anode interface, the second busbar cathode interface are respectively used to connection busbar
Anode and cathode.
6. direct-current system loop trouble-shooting system according to claim 1, which is characterized in that the tracer bag
It includes：Main control unit, push-button unit, LED display, data acquisition interface；
The main control unit is connected with the push-button unit, LED display, data acquisition interface, and the main control unit passes through number
The straight-flow system data of the signal picker acquisition are received according to acquisition interface, and to being sent to LED display after data processing
It has been shown that, the push-button unit are selected by button, and the function of the main control unit is controlled to realize.
7. direct-current system loop trouble-shooting system according to claim 6, which is characterized in that the main control unit bag
It includes：
Signal gathering unit, signal amplification unit, filter unit, AD conversion unit, signal processing unit, accident analysis list
Member；
After the signal gathering unit receives the straight-flow system signal that the signal picker is sent, amplify successively by signal
After unit, filter unit, AD conversion unit, the straight-flow system signal of acquisition is amplified, is filtered, and analog signal is turned
After changing digital signal into, signal processing unit is sent to；
The signal processing unit is sent to accident analysis unit after handling the current parameters in straight-flow system signal；
The current parameters for the straight-flow system that the accident analysis unit is obtained according to the signal processing unit, judge straight-flow system
The branch of failure and direction, and fault message is sent to LED display and is shown.
8. direct-current system loop trouble-shooting system according to claim 6, which is characterized in that the push-button unit bag
It includes：Start button and function button；
When pressing the start button, the main control unit starts to analyze the failure shape of the straight-flow system circuit of current detection
Condition；
When pressing the function button, the main control unit is in " looped network lookup " operating mode, for DC circuit system
The loop fault of system is detected；When bouncing the function button, the main control unit is in " earthing detection " operating mode,
It is detected for the earth fault to straight-flow system circuit.
9. direct-current system loop trouble-shooting system according to claim 7, which is characterized in that the main control unit also wraps
Alarm Unit is included, when the accident analysis unit monitors the electric signal of current straight-flow system circuit there are during loop fault, institute
It states Alarm Unit and sends alarm prompt.
10. direct-current system loop trouble-shooting system according to claim 1, which is characterized in that the signal picker
Including：
Accommodate module, signal acquisition module, output module；
The blessing module is forceps-like arrangement, for accommodating straight-flow system busbar anode, cathode or branch anode, cathode circuit；
The signal acquisition module is connected with the blessing module, for gathering the straight-flow system circuit that the blessing module accommodates
Electric signal；
The output module is connected with the signal acquisition module, for the straight-flow system line for gathering the signal acquisition module
The electric signal output on road is to tracer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711386539.5A CN108120894A (en) | 2017-12-20 | 2017-12-20 | Direct-current system loop trouble-shooting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711386539.5A CN108120894A (en) | 2017-12-20 | 2017-12-20 | Direct-current system loop trouble-shooting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108120894A true CN108120894A (en) | 2018-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114251329A (en) * | 2021-12-17 | 2022-03-29 | 中铁隧道局集团有限公司 | Shield hydraulic system troubleshooting system based on ZigBee |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114251329A (en) * | 2021-12-17 | 2022-03-29 | 中铁隧道局集团有限公司 | Shield hydraulic system troubleshooting system based on ZigBee |
| CN114251329B (en) * | 2021-12-17 | 2023-06-16 | 中铁隧道局集团有限公司 | Shield hydraulic system fault investigation system based on ZigBee |
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Application publication date: 20180605 |