CN106443328A - Power supply line detection method - Google Patents
Power supply line detection method Download PDFInfo
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- CN106443328A CN106443328A CN201610788560.7A CN201610788560A CN106443328A CN 106443328 A CN106443328 A CN 106443328A CN 201610788560 A CN201610788560 A CN 201610788560A CN 106443328 A CN106443328 A CN 106443328A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a power supply line detection method including an electronic controller, a fiber transceiver, a temperature sensor, a distribution network computer terminal, and a faulty section communication device. The result of whether the relay protection is required is determined by the result of the real-time frequency analysis of the voltage parameters and the AC signal, so that the accuracy of relay protection is improved. The faulty section position is accurately determined by the wireless transmission of the acquired fault signals, and the protection ranges and protection manners of the relay protection devices away from the faulty section at different section distances are determined, so that the overstep and over-protection-range misoperations of the relay protection devices can be prevented. According to the invention, the fault points can be found as soon as possible, the fault reasons can be conveniently found out and the faults can be eliminated, and the detection precision is high under the condition of guaranteeing the grid safe and reliable running.
Description
Technical field
The present invention relates to power network line detection field is and in particular to a kind of power supply wireline inspection method.
Background technology
With deepening constantly of China's electrical network reform, power supply reliability and safety are put forward higher requirement, in order to
Reduce the power off time of user side and frequency of power cut, the satisfaction of lifting Electricity customers, the troubleshooting mode of power distribution network and
Method is particularly important.Distribution network failure processes more needs by feeder automation or Distribution Automation Technology means, accomplishes event
Hinder fast report, quick diagnosis, quickly position, quickly isolate and fast quick-recovery, realize power distribution network rapidly self-healing.Distribution wire at present
Line fault addressing device is commonly installed on road, once line failure, track walker can be by the alarm indicator list of addressing device
Unit, the localization of faults, fix a breakdown, but shortcoming be cannot quick, accurate failure judgement section, patrol section time-consuming, difficulty big, no
Accident timely and effectively can be processed, be easily caused grid loss.
Power supply network line construction is complicated, branched line is various, along with adopting neutral point the neutral point of power supply network circuit more
Earth-free or system through grounding through arc is so that be difficult to the line judging to break down during power supply network line failure
Road and lines branch, so that power supply department needs to configure substantial amounts of line inspection and malfunction elimination personnel, increased electric company
Maintenance with fortune inspection cost.
Content of the invention
In view of this, the purpose of the present invention is for the deficiencies in the prior art, provides a kind of power supply wireline inspection side
Method, the method is directly targeted to the branched line of faulty line or circuit, and positioning precision is higher, more convenient circuit fortune inspection personnel enter
The quick inspection of row line fault and failture evacuation, that greatly reduces line data-logging personnel patrols and examines workload, makes patrol officer
Power supply network line fault can rapidly be excluded.
The object of the present invention is achieved like this：
A kind of power supply wireline inspection method, mainly includes becoming part as under group：Current transformer, electronic controller,
Fiber optical transceiver, temperature sensor, power distribution network computer terminal, faulty section communication apparatus.
A kind of power supply wireline inspection method, describes including following, described current transformer is set in supply line
Collection line current signal, the signal output part of described current transformer is connected with the signal acquisition terminal of described electronic controller,
The outfan of described electronic controller is connected to described fiber optical transceiver, and the outfan of described fiber optical transceiver is connected to described temperature
Degree sensor, the outfan of described temperature sensor is connected to described power distribution network computer terminal, described power distribution network computer terminal
Outfan is connected to described faulty section communication module.
Further, described current transformer gathers line current signal, the signals collecting termination of described electronic controller
Receive from described current transformer line current signal, when normal line current first time pass through described electronic controller or
When line circuit for fault current and reach electronic controller setting preset value when, the control instruction of described electronic controller is defeated
Go out end and send corresponding control signal respectively；Described fiber optical transceiver is used for the digital current signal after processing with Frame
Form is uploaded to distribution terminal by optical fiber；Described temperature sensor is used under extreme temperature environment, described digital current being believed
Number compensate, wherein, extreme ambient temperature includes thermal extremes environment and extreme low temperature environment；Described power distribution network computer terminal
Receiving terminal be connected with described temperature sensor outfan；Described faulty section communication module receives from described power distribution network computer eventually
The information installing place on line and line status is sent to be provided with by network communication system and specifies reception by the control signal at end
The described faulty section communication module of device, realizes the condition monitoring to distribution line for the described faulty section communication module.
Further, described temperature sensor compensates specifically to digital current signal under the extreme temperature environment of place
For：If thermal extremes environment, then the value of described digital current signal reduces accordingly；If extreme low temperature environment, then described
The value of digital current signal accordingly increases.
Further, described electronic controller is externally provided with shielding box, to ensure to have shielding electricity to described electronic controller
Magnetic disturbance and protective effect, improve fault detection accuracy.
A kind of operation principle of power supply wireline inspection method, supply line's detection method, described electronic controller will
The digital current signal that described current transformer receives is sequentially filled to sampling buffer, after sampling buffer is filled up,
The second time interval according to setting calculates the current average of digital current signal in sampling buffer, and wherein, this sampling is delayed
Rush the region that area is temporary sampled data in main controller；When sampling buffer has 18, the digital current signal of corresponding A phase is filled out
It is charged to the sampling buffer of A phase, after 18S, is filled with the sampling buffer of A phase, hereafter the new digital current letter of re-sampling 1
Number enter sampling buffer, then in present sample relief area, 1 digital current signal of foremost is extruded.Second time interval
May be set to 1 second, then, after sampling buffer is filled up, calculated meansigma methodss every 1 second.B phase, the place of the digital signal of C phase
Reason is similar, three independent using relief area in carry out.Very first time interval can be identical with the second time interval
Can be different.Current average is filled to average buffer, and previous average with average buffer to current average
Value is compared, and this average buffer is the region of temporary meansigma methodss in main controller, and A phase, B phase and C phase have each independent
Average buffer, corresponding respective sampling buffer.I.e. A phase digital current signal is packed into A phase and adopts relief area, the A of calculating
Equal average puts into A phase average relief area, judges whether there occurs fault in A phase.Likewise, to the numeral electricity in B phase and C phase
Stream signal also independently carries out identical operation.If current average is more than preset value with the absolute value of the difference of previous meansigma methodss,
It is then trouble point, and trouble point is uploaded to described power distribution network computer eventually by described fiber optical transceiver as a data frame
End, is being sent to described faulty section communication apparatus by described power distribution network computer terminal；If current average is average with previous
The absolute value of the difference of value is not more than preset value, then pass through digital current signal on described fiber optical transceiver as a data frame
Reach described power distribution network computer terminal, described faulty section communication apparatus, user are being sent to by described power distribution network computer terminal
Can this preset value of sets itself, in the present embodiment, this preset value be 20%.By above-mentioned place is carried out to digital current signal
Reason, can effectively filter out non-faulting point.
Beneficial effects of the present invention：The power supply wireline inspection method of the present invention, only need to be after circuit failture evacuation
After failture evacuation confirms to click confirmation on part, daemon software can get the relevant information of failture evacuation, facilitates implementation
Rapidly fault recovery and power supply.
Brief description
Fig. 1 is the structural representation of supply line's testing circuit described according to embodiments of the present invention.
The circuit theory diagrams of charging circuit in Tu2Shi supply line communication module.
In figure：1st, current transformer；2nd, electronic controller；3rd, fiber optical transceiver；4th, temperature sensor；5th, power distribution network computer
Terminal；6th, faulty section communication apparatus.
Specific embodiment
Below the embodiment it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present invention
It is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained, broadly falls into the scope of protection of the invention.
According to embodiments of the invention, there is provided a kind of distribution line failure testing equipment, mainly include following composition portion
Point：Current transformer 1, electronic controller 2, fiber optical transceiver 3, temperature sensor 4, power distribution network computer terminal 5, faulty section communication
Equipment 6.
According to embodiments of the invention, there is provided a kind of power supply wireline inspection method, describe including following, described electricity
Current transformer 1 is set in collection line current signal on distribution line, the signal output part of described current transformer 1 and described electricity
The signal acquisition terminal of sub-controller 2 is connected, and the outfan of described electronic controller 2 is connected to described fiber optical transceiver 3, described light
The outfan of fine transceiver 3 is connected to described temperature sensor 4, and the outfan of described temperature sensor 4 is connected to described distribution
Net computer terminal 5, the outfan of described power distribution network computer terminal 5 is connected to described faulty section communication module 6.
The various pieces of signal gathering unit also need to carry out in actual equipment the installation of each assembly, fixation and
The exterior insulation protection of whole equipment, therefore also needs to configure an insulation fixed installation that these modules are fixed installation
Support, with the insulator overcoat also needing to a column support type, insulation mounting bracket adopts the support of epoxy resin casting
Structure, the insulator overcoat of column support type can adopt the insulating coating of silicone rubber, epoxy resin or porcelain bottle insulators material, and this is exhausted
Edge overcoat can adopt insulation column overcoat, for ensureing that electronic section has enough insulation distances with primary current wire and climb
Electrical distance, ensures that together electronic section will not be damaged by outside daylight, raindrop, dust etc., facilitates implementation current acquisition together
Device on the line be installed on fixation.
In one embodiment, described current transformer 1 gathers line current signal, the signal of described electronic controller 2
Collection terminal receives the line current signal from described current transformer 1, passes through described electricity when normal line current first time
Sub-controller 2 or when line circuit is for fault current and when reaching preset value that described electronic controller 2 sets, described electronics control
The control instruction outfan of device 2 processed sends corresponding control signal respectively；Described fiber optical transceiver 3 is used for the numeral after processing
Current signal is uploaded by optical fiber as a data frame；Described temperature sensor 4 is used under extreme temperature environment to numeral
Current signal compensates, and wherein, extreme ambient temperature includes thermal extremes environment and extreme low temperature environment；Described power distribution network electricity
The receiving terminal of brain terminal 5 is connected with described temperature sensor 4 outfan；Described faulty section communication module 6 receives joins from described
The information installing place on line and line status is sent to by the control signal of electrical network computer terminal 5 by network communication system
It is provided with the described faulty section communication module 6 of specified receptor, realize described faulty section communication module 6 and the state of distribution line is supervised
Control.
In one embodiment, described temperature sensor 4 is carried out to digital current signal under the extreme temperature environment of place
Compensation is specially：If thermal extremes environment, then the value of described digital current signal reduces accordingly；If extreme low temperature ring
Border, then the value of described digital current signal accordingly increase.
In one embodiment, described electronic controller 2 is externally provided with shielding box, to ensure described electronic controller 2 is had
There are shielding electromagnetic interference and protective effect, improve fault detection accuracy.
According to embodiments of the invention, there is provided a kind of method of work of power supply wireline inspection, supply line's fault
Detection method, the digital current signal that described current transformer 1 receives is sequentially filled slow to sampling by described electronic controller 2
Rush in area, after sampling buffer is filled up, the second time interval according to setting calculates digital current signal in sampling buffer
Current average, wherein, this sampling buffer is the region of temporary sampled data in described electronic controller 2；When sampling is slow
Rushing area has 18, and the digital current signal of corresponding A phase is filled into the sampling buffer of A phase, is filled with adopting of A phase after 18S
Sample relief area, the hereafter new digital current signal entrance sampling buffer of re-sampling 1, then foremost in present sample relief area
1 digital current signal be extruded.Second time interval may be set to 1 second, then after sampling buffer is filled up, every 1 second
Calculate meansigma methodss.B phase, the process of the digital signal of C phase are similar, three independent using relief area in carry out.
Very first time interval be can be the same or different with the second time interval.Current average is filled to average buffer, and
Current average is compared with meansigma methodss previous in average buffer, this average buffer is temporary average in main controller
The region of value, A phase, B phase and C phase have each independent average buffer, corresponding respective sampling buffer.I.e. A phase is digital
Current signal is packed into A phase and adopts relief area, and the equal average of A of calculating is put into A phase average relief area, judged whether send out in A phase
Give birth to fault.Likewise, identical operation is also independently carried out to the digital current signal in B phase and C phase.If current average with
The absolute value of the difference of previous meansigma methodss is more than preset value, then for trouble point, and trouble point is passed through as a data frame institute
State fiber optical transceiver 3 and be uploaded to described power distribution network computer terminal 5, described event is being sent to by described power supply network computer terminal 5
Barrier section communication apparatus 6；If current average is not more than preset value, by digital current with the absolute value of the difference of previous meansigma methodss
Signal is uploaded to described power distribution network computer terminal 5, by described distribution by described fiber optical transceiver 3 as a data frame
Net computer terminal 5 be sent to described faulty section communication apparatus 6, user can this preset value of sets itself, in this example, this preset value
For 20%.By above-mentioned process is carried out to digital current signal, non-faulting point can be effectively filtered out.
Understand the technique scheme of the present invention for convenience, below by way of above-mentioned to the present invention in specifically used mode
Technical scheme is described in detail.
Trouble point can be found as early as possible by above-mentioned detection method, to find out failure cause, to eliminate fault, guaranteeing
In the case of power grid security reliability service, accuracy of detection is high, and then it is broader so that this distribution line failure detection method is had
Application.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of power supply wireline inspection method is it is characterised in that mainly include following ingredient：Current transformer (1),
Electronic controller (2), fiber optical transceiver (3), temperature sensor (4), power distribution network computer terminal (5), faulty section communication apparatus
(6).
2. power supply wireline inspection method as claimed in claim 1 is it is characterised in that described current transformer (1) is set with
Line current signal, the signal output part of described current transformer (1) and described electronic controller (2) are gathered on distribution line
Signal acquisition terminal be connected, the outfan of described electronic controller (2) is connected to described fiber optical transceiver (3), and described optical fiber is received
The outfan sending out device (3) is connected to described temperature sensor (4), the outfan of described temperature sensor (4) be connected to described in join
Electrical network computer terminal (5), the outfan of described power distribution network computer terminal (5) is connected to described faulty section communication module (6).
3. current acquisition unit gathers the current value of power supply network circuit and branched line, after microprocessor processes, using wireless
Communication module is sent to current acquisition unit communication module；Current acquisition unit communication module is sent to after receiving current value joins
Guangdong power system tests and analyzes backstage；Distribution network line fault detection and analysis backstage carries out to the current value receiving processing,
Analysis, the current value after processing is contrasted with default normal current value scope, if in the range of normal current value, sentencing
Broken string road is normal；If exceeding normal current value scope, judge that circuit breaks down, and in distribution network line fault detection and analysis
Reported to the police in backstage.
4. power supply wireline inspection method as claimed in claim 2 is it is characterised in that described current transformer (1) gathers
Line current signal, the signal acquisition terminal of described electronic controller (2) receives the line current from described current transformer (1)
Signal, when normal line current first time is by described electronic controller (2) or when line circuit is fault current and reaches
During the preset value that described electronic controller (2) sets, the control instruction outfan of described electronic controller (2) sends accordingly respectively
Control signal；Described fiber optical transceiver (3) is used for for the digital current signal after processing passing through optical fiber as a data frame
Upload；Described temperature sensor (4) is used under extreme temperature environment, digital current signal being compensated, wherein, extreme ring
Border temperature includes thermal extremes environment and extreme low temperature environment；The receiving terminal of described power distribution network computer terminal (5) and described temperature
Sensor (4) outfan is connected；Described faulty section communication module (6) receives the control from described power distribution network computer terminal (5)
The information installing place on line and line status is sent to by network communication system and is provided with described in specified receptor by signal
Faulty section communication module (6), realizes the condition monitoring to distribution line for the described faulty section communication module (6).
5. distribution line failure detection method according to claim 2 will be it is characterised in that described electronic controller (2) will
The digital current signal that described current transformer (1) receives is sequentially filled to sampling buffer, fills up in sampling buffer
Afterwards, the current average of digital current signal in sampling buffer, wherein, this sampling is calculated according to the second time interval setting
Relief area is the region of temporary sampled data in described electronic controller (2)；When sampling buffer has 18, corresponding A phase
Digital current signal is filled into the sampling buffer of A phase, is filled with the sampling buffer of A phase after 18S, hereafter re-sampling 1
New digital current signal enters sampling buffer, then in present sample relief area, 1 digital current signal of foremost is squeezed
Go out, the second time interval may be set to 1 second, then, after sampling buffer is filled up, calculated meansigma methodss, B phase, C phase every 1 second
The process of digital signal be similar, three independent using relief area in carry out；Very first time interval and the second time
Interval can be the same or different, and current average is filled to average buffer, and current average is buffered with average
In area, previous meansigma methodss are compared, and this average buffer is the region of temporary meansigma methodss in main controller, A phase, B phase and C phase
There is each independent average buffer, correspond to respective sampling buffer, that is, A phase digital current signal is packed into A phase and adopts
Relief area, the equal average of A of calculating puts into A phase average relief area, judges whether there occurs fault in A phase；Likewise, to B phase
Also independently carry out identical operation with the digital current signal in C phase, if current average and the difference of previous meansigma methodss is exhausted
Preset value is more than to value, then for trouble point, and trouble point is uploaded to by described fiber optical transceiver (3) as a data frame
Described power distribution network computer terminal (5), is being sent to described faulty section communication apparatus (6) by described power distribution network computer terminal (5)；
If by above-mentioned process is carried out to digital current signal, non-faulting point can be effectively filtered out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610788560.7A CN106443328A (en) | 2016-08-31 | 2016-08-31 | Power supply line detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610788560.7A CN106443328A (en) | 2016-08-31 | 2016-08-31 | Power supply line detection method |
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| CN106443328A true CN106443328A (en) | 2017-02-22 |
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| CN201610788560.7A Pending CN106443328A (en) | 2016-08-31 | 2016-08-31 | Power supply line detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211429A (en) * | 2017-07-03 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Temperature sampling method, apparatus and cooking appliance |
| CN111896759A (en) * | 2020-06-16 | 2020-11-06 | 武汉璟泓科技股份有限公司 | Method and device for eliminating influence of sample introduction process and storage medium |
| CN113484686A (en) * | 2021-07-20 | 2021-10-08 | 河北地质大学 | Power line fault position determining method, device and terminal |
-
2016
- 2016-08-31 CN CN201610788560.7A patent/CN106443328A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211429A (en) * | 2017-07-03 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Temperature sampling method, apparatus and cooking appliance |
| CN109211429B (en) * | 2017-07-03 | 2020-12-22 | 佛山市顺德区美的电热电器制造有限公司 | Temperature sampling method and device and cooking appliance |
| CN111896759A (en) * | 2020-06-16 | 2020-11-06 | 武汉璟泓科技股份有限公司 | Method and device for eliminating influence of sample introduction process and storage medium |
| CN111896759B (en) * | 2020-06-16 | 2023-11-24 | 武汉璟泓科技股份有限公司 | Method, device and storage medium for eliminating influence of sample injection process |
| CN113484686A (en) * | 2021-07-20 | 2021-10-08 | 河北地质大学 | Power line fault position determining method, device and terminal |
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Application publication date: 20170222 |
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