CN104375054A - Device for preventing misoperation during line maintenance - Google Patents
Device for preventing misoperation during line maintenance Download PDFInfo
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- CN104375054A CN104375054A CN201410759043.8A CN201410759043A CN104375054A CN 104375054 A CN104375054 A CN 104375054A CN 201410759043 A CN201410759043 A CN 201410759043A CN 104375054 A CN104375054 A CN 104375054A
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- line maintenance
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- misoperation apparatus
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- 238000012423 maintenance Methods 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 27
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- 238000012360 testing method Methods 0.000 claims description 42
- 238000005259 measurement Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000002847 impedance measurement Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 208000033999 Device damage Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a device for preventing misoperation during line maintenance. The device comprises a detecting module, a calibrating module and a judging module. The detecting module is used for detecting connection of lines to determine whether the connection of the lines is normal or not, and the lines can be checked by the detecting module if the connection of the lines is abnormal; the calibrating module is used for detecting the lines by the aid of a line state measuring device when the connection of the lines is normal, and detection results can be outputted by the calibrating module; the judging module is used for detecting the connection of the lines to determine whether the connection of the lines is normal or not if the detection results are not within ranges under preset conditions; closing operation can be carried out on the lines if the detection results are within the ranges under the preset conditions. The device has the advantage that misoperation can be effectively prevented during line maintenance.
Description
Technical field
The present invention relates to technical field of electricity, particularly relate to one and prevent line maintenance misoperation apparatus.
Background technology
Along with the development of electric system, the coverage of transmission line of electricity is more and more extensive, and electric line is the blood vessels of electric system, therefore will ensure the safe and reliable operation of electric line.
Safe operation in order to electric line needs to carry out interruption maintenance to electric line; Such as need to clean insulator, change insulator etc., this is the precautionary measures.Also have and need to carry out interruption maintenance when going out distribution line and breaking down; Before maintenance, need the powered various aspects of possibility in circuit all to operate a switch power failure, and after carrying out good ground connection, just can overhaul.After maintenance completes, also need to untie ground wire, then to the operation that electric line closes a floodgate.
But in real work, probably occur just having carried out closing operation to going out distribution line because information communication error that is not smooth or staff causes ground wire all not untie, operating equipment damages, and even threatens life safety.
At present good way is not also had to solve this problem, or this type of fault can not be got rid of well.
Therefore, how effectively preventing from occurring maloperation during line maintenance, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of this invention is to provide one and prevent line maintenance misoperation apparatus, this device can effectively prevent from occurring maloperation during line maintenance, and prevent because maloperation causes device damage, life danger appears in personnel.
For solving the problems of the technologies described above, the invention provides one and preventing line maintenance misoperation apparatus from comprising:
Detection module, whether normal for detection line wiring, when wiring is abnormal, check;
Inspection amount module, for when connections is normal, utilizes line status measurement mechanism to detect, and output detections result;
Judge module, for when testing result is not within the scope of predetermined condition, whether detection line wiring is normal; When testing result is within the scope of predetermined condition, carry out circuit closing operation.
Wherein, described line status measurement mechanism comprises:
Signal generator, for making power coil produce pumping signal at measuring circuit by signal generating circuit;
Acquisition Circuit, gathers electric parameters and the power coil signal of the measuring circuit that measuring coil records;
Impedance computation device, according to described electric parameters and power coil signal, obtains the resistance value of measuring circuit by impedance computation;
Logic device, by comparing described resistance value and tentation data, obtains the line status of described measuring circuit.
Wherein, described judge module comprises: comparer, determining device, wherein,
Comparer, for comparing testing result and predetermined condition;
Determining device, for according to comparative result, judges testing result whether within the scope of predetermined condition.
Wherein, prevent line maintenance misoperation apparatus from also comprising: to determine equipment, for determining that the grounding switch of detection side is in closure state.
Wherein, prevent line maintenance misoperation apparatus from also comprising: caution device, for warning according to testing result.
Wherein, described caution device comprises:
Red light, for when testing result is not within the scope of predetermined condition, red warning etc. are shinny;
Green light, for when testing result is within the scope of predetermined condition, green warning lamp is shinny.
Wherein, described caution device comprises:
Alarm bell, for when testing result is not within the scope of predetermined condition, warns.
Wherein, prevent line maintenance misoperation apparatus from also comprising: display device, for showing testing result.
Wherein, described display device comprises:
LCDs, for showing testing result.
Whether, based on technique scheme, the line maintenance misoperation apparatus that prevents provided by the present invention comprises: detection module, normal for detection line wiring, when wiring is abnormal, checks; Inspection amount module, for when connections is normal, utilizes line status measurement mechanism to detect, and output detections result; Judge module, for when testing result is not within the scope of predetermined condition, whether detection line wiring is normal; When testing result is within the scope of predetermined condition, carry out circuit closing operation; After detection line wiring is normal, in order to prevent maloperation, also needing to utilize degree of accuracy and highly sensitive line status measurement mechanism to detect, and testing result is judged, effectively can prevent faulty operation like this, strengthen the prevention ability of line maintenance; This device can effectively prevent from occurring maloperation during line maintenance.
Accompanying drawing explanation
In order to the technical scheme of the clearer explanation embodiment of the present invention or prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structured flowchart preventing line maintenance misoperation apparatus that Fig. 1 provides for the embodiment of the present invention;
The structured flowchart of the line status measurement mechanism that Fig. 2 provides for the embodiment of the present invention;
The structured flowchart of the judge module that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 provide for the embodiment of the present invention another prevent the structured flowchart of line maintenance misoperation apparatus;
The structured flowchart preventing line maintenance misoperation apparatus again that Fig. 5 provides for the embodiment of the present invention.
Embodiment
The object of this invention is to provide one and prevent line maintenance misoperation apparatus, this device can effectively prevent from occurring maloperation during line maintenance, and prevent because maloperation causes device damage, life danger appears in personnel.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the structured flowchart preventing line maintenance misoperation apparatus that Fig. 1 provides for the embodiment of the present invention; This device can comprise:
Detection module 100, whether normal for detection line wiring, when wiring is abnormal, check;
Inspection amount module 200, for when connections is normal, utilizes line status measurement mechanism to detect, and output detections result;
Wherein, utilizing line status measurement mechanism to detect measuring circuit, can be the mensuration of carrying out resistance value and angle of impedance, because the state that the mode of measurement impedance can obtain circuit is accurately more accurate than using the method for voltage source etc.And the result that will detect, can be that the value of resistance value and angle of impedance exports.
Judge module 300, for when testing result is not within the scope of predetermined condition, whether detection line wiring is normal; When testing result is within the scope of predetermined condition, carry out circuit closing operation.
Wherein, can obtain predetermined condition through a large amount of experiments can be that testing result middle impedance modulus value is greater than 600 ohm, and angle of impedance is less than 0.Can ensure that ground wire is all disconnect, other situations are all the situations that possible there is ground wire connection.Such predetermined condition is rational predetermined condition, and scope is namely not too large, has and accurately can get rid of the situation that all ground wires are all disconnections.
Wherein, due to line outage maintenance, not only the grounding switch at transformer station two ends closes, and circuit also hangs with temporary ground wire, and band temporary ground wire will be avoided here exactly to close a floodgate.
Based on technique scheme, what the embodiment of the present invention provided prevents line maintenance misoperation apparatus, after detection line wiring is normal, in order to prevent maloperation, also need to utilize degree of accuracy and highly sensitive line status measurement mechanism to detect, and testing result is judged, effectively can prevent faulty operation like this, strengthen the prevention ability of line maintenance; The method can effectively prevent from occurring maloperation during line maintenance, and minimizing accident occurs, proterctive equipment and personal safety.
Optionally, please refer to Fig. 2, the structured flowchart of the line status measurement mechanism that Fig. 2 provides for the embodiment of the present invention; This device can comprise:
Signal generator 410, for making power coil produce pumping signal at measuring circuit by signal generating circuit;
Wherein, generally signal generating circuit needs to produce 60Hz frequency measurement signal, makes it as the signal source of power coil, provides energy to power coil.Power coil is made to produce pumping signal at measuring circuit.
Acquisition Circuit 420, gathers electric parameters and the power coil signal of the measuring circuit that measuring coil records;
Impedance computation device 430, according to described electric parameters and power coil signal, obtains the resistance value of measuring circuit by impedance computation;
Wherein, need here, according to described electric parameters and power coil signal, to be obtained the resistance value of measuring circuit by impedance computation.Computing impedance value is because suppose, directly to injecting voltage source on circuit, to have judged whether no ground by voltage on detection line.The voltage of signal injection point always equals signal source voltage, therefore will judge whether earth point exists, and at least will detect two the even voltage of three positions.This point requirement easy to use is disagreed, and does not possess operability completely in practice.
And due to two aspects, the voltage that circuit adds can not be too high: 1) adopt the mode of coil coupling to add pumping signal on circuit; 2) ensure personal safety.Should be very faint with or without voltage responsive difference during earth point, so be infeasible using voltage as the criterion judging earth point whether existence.
Current-responsive as the main Problems existing of criterion is: size of current is subject to the impact of the magnitude of voltage of signal source and measuring accuracy very large, and be difficult to determine by the voltage swing that coupled method injects on circuit, be therefore also difficult to determine that a current value is as the criterion with or without earth point.
And measuring circuit is when with or without earth point, measuring circuit is diverse, when having no ground impedance magnitude and angle of impedance difference all very large.At present, along with development in science and technology, digitizing impedance measurement method is now very ripe, and measuring accuracy is high, measurement result is reliable, and measurement mechanism is light to be easy to carry about with one, and therefore selects to adopt impedance as the foundation with or without earth point on identification circuit.
The process utilizing this device to carry out judging is very simple, does not conflict with existing working specification, only needs to carry out detecting and judging within the time interval that both sides grounding switch disconnects respectively.Also, namely under the prerequisite of an existing earth point, the existence whether having another earth point is detected.
Logic device 440, by comparing described resistance value and tentation data, obtains the line status of described measuring circuit.
Wherein, impedance magnitude measurement range is at 1 ~ 1000 Ω, and measuring accuracy is 0.1 Ω; Angle of impedance measurement range is at-90 ° ~+90 °, and measuring accuracy is 0.1 degree, therefore uses impedance measurement degree of accuracy high.
Optionally, please refer to Fig. 3, the structured flowchart of the judge module that Fig. 3 provides for the embodiment of the present invention; This judge module 300 can comprise: comparer 310, determining device 320, wherein,
Comparer 310, for comparing testing result and predetermined condition;
Determining device 320, for according to comparative result, judges testing result whether within the scope of predetermined condition.
Optionally, prevent line maintenance misoperation apparatus from also comprising: to determine equipment, for determining that the grounding switch of detection side is in closure state.
Wherein, such operation requirements is the safety in order to ensure operating personnel.
Optionally, please refer to Fig. 4, Fig. 4 provide for the embodiment of the present invention another prevent the structured flowchart of line maintenance misoperation apparatus; This device also comprises: caution device 500, for warning according to testing result.
Wherein, certain reminding effect can be played like this, prevent staff from missing monitoring result, well do not determine work, cause work accident.Such as can carry out bright light prompting, represent the different testing results of circuit according to the different colours waited, also can send alarm sound when occur testing result can not within the scope of predetermined condition, warning operating personnel need the detection carrying out ground wire.
Optionally, described caution device comprises:
Red light, for when testing result is not within the scope of predetermined condition, red warning etc. are shinny;
Green light, for when testing result is within the scope of predetermined condition, green warning lamp is shinny.
Wherein, wherein, according to the testing result of impedance loop, red green display lamp is controlled.If angle of impedance is less than 0 and impedance magnitude is greater than 600 Ω, greensignal light is bright, shows that circuit does not have earth point; No matter if angle of impedance is greater than 0 impedance magnitude size, red eye is bright, show that circuit has earth point.
Optionally, described caution device comprises:
Alarm bell, for when testing result is not within the scope of predetermined condition, warns.
Optionally, please refer to Fig. 5, the structured flowchart preventing line maintenance misoperation apparatus again that Fig. 5 provides for the embodiment of the present invention; This device also comprises: display device 600, for showing testing result.
Wherein, the impedance magnitude recorded, angle of impedance can show by display device here intuitively, and both should be easy to distinguish, and can not be confused, and the positive and negative of angle of impedance also can show.The impedance magnitude such as measured is greater than 1000 Ω, and display screen should show " >999 "; If the impedance magnitude measured is less than 1 Ω, should show " <1 ".
Optionally, described display device comprises:
LCDs, for showing testing result.
Not only optionally, prevent line maintenance misoperation apparatus from can also comprise display device but also comprise caution device described in.
Based on technique scheme, what the embodiment of the present invention provided prevents line maintenance misoperation apparatus, after detection line wiring is normal, in order to prevent maloperation, also need to utilize degree of accuracy and highly sensitive line status measurement mechanism to detect, and testing result is judged, effectively can prevent faulty operation like this, strengthen the prevention ability of line maintenance; And there is display device therefore clearly can demonstrate testing result; And there is warning prompting, more user-friendly design, prevent staff from occurring the maloperation that omission or false judgment etc. occur; This device can effectively prevent from occurring maloperation during line maintenance, and minimizing accident occurs, proterctive equipment and personal safety.
Embodiments provide and prevent line maintenance misoperation apparatus, can effectively can prevent from occurring maloperation during line maintenance by said apparatus, minimizing accident occurs, proterctive equipment and personal safety.
Provide concrete device operation instruction below, staff is as follows to preventing the operating process of line maintenance misoperation apparatus:
(1) after maintenance completes, after in standing, all artificial ground wires are removed, the grounding switch of opposite end transformer station disconnects and notifies this station.
(2) power coil in equipment and measuring coil are enclosed within grounding switch by staff, open and prevent line maintenance misoperation apparatus, and the signal generator of this device produces AC signal, as measurement signal source after power amplification; The injection in measuring-signal source and the measurement of loop electric current complete respectively by two coils comprising iron core; The electric current that Injection Signal and measurement obtain is combined and carries out the impedance loop that analytical calculation can obtain circuit.If testing result is greater than 600 ohm and angle of impedance is negative, represent the no ground point of circuit; Otherwise then show that circuit has earth point.The display screen of device also can show the loop resistance values recorded and angle of impedance.
Staff detects with alternate state by relative phase with preventing line maintenance misoperation apparatus, confirms on the disconnecting link state of opposite end transformer station and circuit, whether temporary ground wire is removed according to testing result.
(3) if circuit is without other earth point, then dispatcher is notified, can power transmission; If circuit still has earth point, notify that on dispatcher and opposite end work of transformer substation personnel or circuit, maintainer reaffirms, repeats aforesaid operations after receiving the notice reaffirmed.
In instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above the line maintenance misoperation apparatus that prevents provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. prevent a line maintenance misoperation apparatus, it is characterized in that, comprising:
Detection module, whether normal for detection line wiring, when wiring is abnormal, check;
Inspection amount module, for when connections is normal, utilizes line status measurement mechanism to detect, and output detections result;
Judge module, for when testing result is not within the scope of predetermined condition, whether detection line wiring is normal; When testing result is within the scope of predetermined condition, carry out circuit closing operation.
2. prevent line maintenance misoperation apparatus as claimed in claim 1, it is characterized in that, described line status measurement mechanism comprises:
Signal generator, for making power coil produce pumping signal at measuring circuit by signal generating circuit;
Acquisition Circuit, gathers electric parameters and the power coil signal of the measuring circuit that measuring coil records;
Impedance computation device, according to described electric parameters and power coil signal, obtains the resistance value of measuring circuit by impedance computation;
Logic device, by comparing described resistance value and tentation data, obtains the line status of described measuring circuit.
3. prevent line maintenance misoperation apparatus as claimed in claim 1, it is characterized in that, described judge module comprises: comparer, determining device, wherein,
Comparer, for comparing testing result and predetermined condition;
Determining device, for according to comparative result, judges testing result whether within the scope of predetermined condition.
4. prevent line maintenance misoperation apparatus as claimed in claim 1, it is characterized in that, also comprise: determine equipment, for determining that the grounding switch of detection side is in closure state.
5. prevent line maintenance misoperation apparatus as claimed in claim 1, it is characterized in that, also comprise: caution device, for warning according to testing result.
6. prevent line maintenance misoperation apparatus as claimed in claim 5, it is characterized in that, described caution device comprises:
Red light, for when testing result is not within the scope of predetermined condition, red warning etc. are shinny;
Green light, for when testing result is within the scope of predetermined condition, green warning lamp is shinny.
7. prevent line maintenance misoperation apparatus as claimed in claim 5, it is characterized in that, described caution device comprises:
Alarm bell, for when testing result is not within the scope of predetermined condition, warns.
8. prevent line maintenance misoperation apparatus as claimed in claim 1, it is characterized in that, also comprise: display device, for showing testing result.
9. prevent line maintenance misoperation apparatus as claimed in claim 8, it is characterized in that, described display device comprises:
LCDs, for showing testing result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410759043.8A CN104375054A (en) | 2014-12-10 | 2014-12-10 | Device for preventing misoperation during line maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410759043.8A CN104375054A (en) | 2014-12-10 | 2014-12-10 | Device for preventing misoperation during line maintenance |
Publications (1)
| Publication Number | Publication Date |
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| CN104375054A true CN104375054A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410759043.8A Pending CN104375054A (en) | 2014-12-10 | 2014-12-10 | Device for preventing misoperation during line maintenance |
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| CN (1) | CN104375054A (en) |
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- 2014-12-10 CN CN201410759043.8A patent/CN104375054A/en active Pending
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Application publication date: 20150225 |