CN104459441A - Method for preventing misoperation in process of line maintenance - Google Patents
Method for preventing misoperation in process of line maintenance Download PDFInfo
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- CN104459441A CN104459441A CN201410757844.0A CN201410757844A CN104459441A CN 104459441 A CN104459441 A CN 104459441A CN 201410757844 A CN201410757844 A CN 201410757844A CN 104459441 A CN104459441 A CN 104459441A
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Abstract
The invention discloses a method for preventing misoperation in the process of line maintenance. The method includes the steps that whether line wiring is normal or not is detected, when the wiring is abnormal, check is carried out; when the line wiring is normal, detection is carried out through a line status measurement device, and a detection result is output; when the detection result is beyond a preset condition range, whether the line wiring is normal or not is detected; when the detection result is within the preset condition range, line closing operation is performed. The method can effectively prevent misoperation in the process of line maintenance.
Description
Technical field
The present invention relates to technical field of electricity, particularly relate to one and prevent line maintenance maloperation method.
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 maloperation method, the method 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 maloperation method in line maintenance from comprising:
Whether detection line wiring is normal, when wiring is abnormal, checks;
When connections is normal, line status measurement mechanism is utilized to detect, and output detections result;
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, describedly utilize line status measurement mechanism to carry out detection to comprise:
Power coil is made to produce pumping signal at measuring circuit by signal generating circuit;
Gather electric parameters and the power coil signal of the measuring circuit that measuring coil records;
According to described electric parameters and power coil signal, obtained the resistance value of measuring circuit by impedance computation;
By comparing described resistance value and tentation data, obtain the line status of described measuring circuit.
Wherein, whether described detection line wiring normally comprises:
Detect ground wire whether to disconnect;
The ground wire not having to disconnect is disconnected.
Wherein, described predetermined condition comprises:
Testing result middle impedance modulus value is greater than 600 ohm, and angle of impedance is less than 0.
Wherein, whether described detection line wiring is normal, when wiring is abnormal, also comprises before checking:
Determine that the grounding switch of detection side is in closure state.
Wherein, prevent maloperation method in line maintenance from also comprising:
Warn according to testing result.
Wherein, describedly carry out warning according to testing result and comprise:
When testing result is not within the scope of predetermined condition, red warning lamp is shinny;
When testing result is within the scope of predetermined condition, green warning lamp is shinny.
Wherein, prevent maloperation method in line maintenance from also comprising: to utilize display device to show testing result.
Wherein, describedly testing result utilized display device to carry out display to comprise:
LCDs is utilized to show testing result.
Based on technique scheme, the line maintenance maloperation method that prevents provided by the present invention comprises: whether detection line wiring is normal, when wiring is abnormal, checks; When connections is normal, line status measurement mechanism is utilized to detect, and output detections result; 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; The method 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 process flow diagram preventing line maintenance maloperation method that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 carries out the process flow diagram of the method detected for line status measurement mechanism that the embodiment of the present invention provides.
Embodiment
The object of this invention is to provide one and prevent line maintenance maloperation method, the method 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 process flow diagram preventing line maintenance maloperation method that Fig. 1 provides for the embodiment of the present invention; The method can comprise:
Normally whether step s100, detection line wiring, when wiring is abnormal, check;
Step s110, when connections is normal, line status measurement mechanism is utilized to detect, and output detections result;
Wherein, until when wireline inspection is normal, 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.
Step s120, when testing result is not within the scope of predetermined condition, whether detection line wiring is normal;
Wherein, the testing result of output and predetermined condition are compared, such as, carries out registration and compare, when testing result is declined within the scope of predetermined condition, then there is exception, proof may be that ground wire does not disconnect, and therefore needs to carry out wireline inspection, sees whether ground wire does not disconnect, the words being, disconnected, utilizing line status measurement mechanism to detect, see and whether all discharge abnormal.Until testing result meets the requirements.
Step s130, when testing result is within the scope of predetermined condition, carry out circuit closing operation.
Wherein, when testing result is within the scope of predetermined condition, then normal running is all there is not maloperation normally, and the operation after can carrying out, comprises and carry out circuit closing operation.
Based on technique scheme, what the embodiment of the present invention provided prevents line maintenance maloperation method, 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, Fig. 2 carries out the process flow diagram of the method detected for line status measurement mechanism that the embodiment of the present invention provides; The method can comprise:
Step s200, power coil is made to 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.
Step s210, the electric parameters gathering the measuring circuit that measuring coil records and power coil signal;
Step s220, according to described electric parameters and power coil signal, obtained 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 the method 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.
Step s230, by comparing described resistance value and tentation data, obtain 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, whether described detection line wiring normally comprises:
Detect ground wire whether to disconnect;
The ground wire not having to disconnect is disconnected.
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.
Preferably, described predetermined condition comprises:
Testing result middle impedance modulus value is greater than 600 ohm, and angle of impedance is less than 0.
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.
Optionally, whether described detection line wiring is normal, when wiring is abnormal, also comprises before checking:
Determine 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, prevent maloperation method in line maintenance from also comprising:
Warn 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, describedly carry out warning according to testing result and comprise:
When testing result is not within the scope of predetermined condition, red warning lamp is shinny;
When testing result is within the scope of predetermined condition, green warning lamp is shinny.
Wherein, red light is all generally belong to mistake, or color time dangerous, and can play warning function, green is exactly vehicle pass-through color.More clearly, be easily understood.
Wherein, according to the testing result of impedance loop, control red green display lamp.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.
Preferably, prevent maloperation method in line maintenance from also comprising: to utilize display device to show 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, describedly testing result utilized display device to carry out display to comprise:
LCDs is utilized to show testing result.
Wherein, LCDs is more clear, and more common, is widely used.
Based on technique scheme, what the embodiment of the present invention provided prevents line maintenance maloperation method, 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; The method can effectively prevent from occurring maloperation during line maintenance, and minimizing accident occurs, proterctive equipment and personal safety.
Embodiments provide and prevent line maintenance maloperation method, can effectively can prevent from occurring maloperation during line maintenance by said method, minimizing accident occurs, proterctive equipment and personal safety.
Above-mentionedly prevent the use in actual applications of line maintenance maloperation method, provide below and illustrate, the operating process of staff is as follows:
(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 line status measurement mechanism, 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 line status measurement mechanism, 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 maloperation method 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 maloperation method, it is characterized in that, comprising:
Whether detection line wiring is normal, when wiring is abnormal, checks;
When connections is normal, line status measurement mechanism is utilized to detect, and output detections result;
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 maloperation method as claimed in claim 1, it is characterized in that, describedly utilize line status measurement mechanism to carry out detection to comprise:
Power coil is made to produce pumping signal at measuring circuit by signal generating circuit;
Gather electric parameters and the power coil signal of the measuring circuit that measuring coil records;
According to described electric parameters and power coil signal, obtained the resistance value of measuring circuit by impedance computation;
By comparing described resistance value and tentation data, obtain the line status of described measuring circuit.
3. prevent line maintenance maloperation method as claimed in claim 1, it is characterized in that, whether described detection line wiring normally comprises:
Detect ground wire whether to disconnect;
The ground wire not having to disconnect is disconnected.
4. prevent line maintenance maloperation method as claimed in claim 1, it is characterized in that, described predetermined condition comprises:
Testing result middle impedance modulus value is greater than 600 ohm, and angle of impedance is less than 0.
5. prevent line maintenance maloperation method as claimed in claim 1, it is characterized in that, whether described detection line wiring is normal, when wiring is abnormal, also comprises before checking:
Determine that the grounding switch of detection side is in closure state.
6. prevent line maintenance maloperation method as claimed in claim 1, it is characterized in that, also comprise:
Warn according to testing result.
7. prevent line maintenance maloperation method as claimed in claim 6, it is characterized in that, describedly carry out warning according to testing result and comprise:
When testing result is not within the scope of predetermined condition, red warning lamp is shinny;
When testing result is within the scope of predetermined condition, green warning lamp is shinny.
8. prevent line maintenance maloperation method as claimed in claim 1, it is characterized in that, also comprise: utilize display device to show testing result.
9. prevent line maintenance maloperation method as claimed in claim 8, it is characterized in that, describedly testing result utilized display device to carry out display to comprise:
LCDs is utilized to show testing result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410757844.0A CN104459441A (en) | 2014-12-10 | 2014-12-10 | Method for preventing misoperation in process of line maintenance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410757844.0A CN104459441A (en) | 2014-12-10 | 2014-12-10 | Method for preventing misoperation in process of line maintenance |
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| CN104459441A true CN104459441A (en) | 2015-03-25 |
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| CN201410757844.0A Pending CN104459441A (en) | 2014-12-10 | 2014-12-10 | Method for preventing misoperation in process of line maintenance |
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Cited By (1)
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| CN107727997A (en) * | 2016-08-10 | 2018-02-23 | 吕忠华 | A kind of transmission line of electricity makes an inspection tour flight monitoring system online |
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| CN101718832A (en) * | 2009-11-17 | 2010-06-02 | 深圳市科陆电子科技股份有限公司 | High-voltage line fault detection device and detection method |
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Application publication date: 20150325 |