CN108761175A - A kind of ground potential rises detecting system and transmission line lightning stroke situation determines method - Google Patents
A kind of ground potential rises detecting system and transmission line lightning stroke situation determines method Download PDFInfo
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- CN108761175A CN108761175A CN201810480407.7A CN201810480407A CN108761175A CN 108761175 A CN108761175 A CN 108761175A CN 201810480407 A CN201810480407 A CN 201810480407A CN 108761175 A CN108761175 A CN 108761175A
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- transmission line
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- ground potential
- lightning stroke
- lightning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
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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
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Detecting system is risen this application provides a kind of ground potential and transmission line lightning stroke situation determines method, including：The sharing means independent grounding device of sharing means is connected by sharing means ground lead, sharing means independent grounding device is used as the zero potential that ground potential rises detecting system independently of shared electric power tower earthing or grounding means；The shared electric power tower earthing or grounding means and the sharing means independent grounding device are connected, the ground potential rises measuring device and is used to measure the potential difference between the shared electric power tower earthing or grounding means and the sharing means independent grounding device；The data processing equipment that the ground potential rises measuring device is connected, the data processing equipment is used to receive the ground potential and rises the measurement data of measuring device output and carry out statistical disposition.Potential difference between earthing or grounding means and sharing means independent grounding device is connect by monitoring electric power transmission line steel tower in real time, i.e., by monitoring line steel tower ground potential liter in real time, to analyze situation of being struck by lightning along electric power transmission line.
Description
Technical field
This application involves transmission line of electricity technical fields more particularly to a kind of ground potential to rise detecting system and transmission line lightning stroke
Situation determines method.
Background technology
Thunder calamity is a kind of great natural calamity of destructive power, and grave danger but will be generated for electric system.Electric power
In system, the working environment of transmission line of electricity is typically each extremely severe, and the threat being struck by lightning is the most serious.Therefore, defeated for electric power
It for electric line or even entire electric system, is struck by lightning situation along monitoring circuit, lightning strike probability along analysis circuit grasps circuit
The lightning protection of earthed system has extremely important economic and social benefit with discharge capacity.
The dispersibility of the huge energy and lightning stroke itself that are contained due to thunder and lightning, lightning stroke detection still lack at present it is accurate and reliable and
Simple and practicable device or method are difficult to obtain particularly with the lightning strike probability for limiting small range region (such as along transmission line of electricity)
Accurate parameter.About regional lightning strike probability, related Regulations give the concept of the earth annual lightning strike density --- Ng, it is single
Position is secondary/km2, but the determination of its value is often multiplied by 0.1 with annual thunderstorm day Td and is directly determined, therefore, for electric power transmission
For circuit, it is necessary to propose that more accurate lightning strike probability determines method.
When the earthed system of circuit is struck by lightning, it is based on line-to-ground system discharge capacity, the ground potential of line steel tower
Different degrees of raising will be had by rising, and the lightning stroke ground potential liter of iron tower of power transmission line is an important feature of circuit lightning stroke situation
Amount.Iron tower of power transmission line ground potential rises lightning protection and the discharge capacity of situation monitored in real time to analyzing and grasping line-to-ground system
It is significant.Currently, the domestic measured data for lacking steel tower ground potential and rising, has the relevant research work in part also only to retain a percentage of the total profits for the enterprise's own use
The theoretical calculation stage.
Invention content
Detecting system is risen this application provides a kind of ground potential and transmission line lightning stroke situation determines method, for monitoring electricity
Steel tower ground potential liter on power transmission line of electricity analyzes electric power by the power transmission line road steel tower ground potential liter monitored
It is struck by lightning along transmission line of electricity situation.
This application provides a kind of ground potentials to rise detecting system, and being total to for sharing means is connected by sharing means ground lead
Device independent grounding device is enjoyed, the sharing means independent grounding device is used as institute independently of shared electric power tower earthing or grounding means
State the zero potential that ground potential rises detecting system；
Electric power tower earthing or grounding means is shared in connection and the ground potential of the sharing means independent grounding device rises measuring device,
The ground potential rises measuring device for measuring the shared electric power tower earthing or grounding means and sharing means independent grounding dress
Potential difference between setting；
The data processing equipment that the ground potential rises measuring device is connected, the data processing equipment is for receiving describedly
The measurement data of potential rise measuring device output simultaneously carries out statistical disposition.
Optionally, above-mentioned ground potential rises in detecting system, the system comprises：Terminal server, the terminal server
For receiving the measurement data of all data processing equipment wireless transmissions along electric power transmission line and carrying out comprehensive divide
Analysis.
Ground potential based on above-mentioned offer rises detecting system, and present invention also provides a kind of determinations of transmission line lightning stroke situation
Method, the method includes：
Monitoring in real time obtains shared potential difference between electric power tower earthing or grounding means and sharing means independent grounding device；
Compare the potential difference and counting thunder threshold value；
When the potential difference is more than the counting thunder threshold value, add up primary lightning stroke；
When judgement is struck by lightning, record implements monitoring potential difference and lightning stroke time of origin；
The lightning stroke data of all shared electric power towers in statistical analysis power transmission line road, calculate the electric power transmission line
Lightning strike probability.
Optionally, above-mentioned transmission line lightning stroke situation determines that method, the method further include：
The shared electric power tower quantity that power transmission line road is struck by lightning described in the same time is counted, when the quantity is small
When the occupancy volume threshold value of setting, the counting thunder threshold value is adjusted.
Optionally, above-mentioned transmission line lightning stroke situation determines that method, the method further include：
Show the nearest 10 lightning stroke time of origins of each steel tower of power transmission line road and the shared electric power tower
Shared potential difference between electric power tower earthing or grounding means and sharing means independent grounding device.
Optionally, above-mentioned transmission line lightning stroke situation determines method, described to calculate the electric power transmission line lightning strike probability,
Including：
Year thunderbolt frequency along computing electric power line
Wherein, NG linesFor year thunderbolt frequency along transmission line of electricity, secondary/km2Year, NLineFor transmission line of electricity year be struck by lightning total degree,
Times/year；S is transmission line of electricity earth-wire protection area, km2。
Optionally, above-mentioned transmission line lightning stroke situation determines method, described to calculate the electric power transmission line lightning strike probability,
Including：
Hundred meters of computing electric power line year thunderbolt frequency
Wherein, NL linesHundred meters of transmission line of electricity year thunderbolt frequency, secondary/100m, NLineFor the total degree that is struck by lightning in transmission line of electricity year, l
For transmission line of electricity overall length, 100m.
A kind of ground potential provided by the present application rises detecting system and transmission line lightning stroke situation determines method, by supervising in real time
It surveys electric power transmission line steel tower and connects the potential difference between earthing or grounding means and sharing means independent grounding device, i.e., by monitoring line in real time
Road steel tower ground potential liter, to analyze situation of being struck by lightning along electric power transmission line.Ground potential provided by the present application rise detecting system and
Transmission line lightning stroke situation determines that method provides parameter of lightning strike for circuit design, provides lightning protection strategy foundation for circuit O&M, is
Line-to-ground system model structure provides data and supports；And whether can need separately to build independence for the shared equipment of shared steel tower
Earthing or grounding means provides decision-making foundation, and is monitored in real time to running sharing means grounding safety.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram that the ground potential that the embodiment of the present application one provides rises detecting system；
Fig. 2 is the structural schematic diagram that the ground potential that the embodiment of the present application two provides rises detecting system；
Fig. 3 is the basic flow chart that transmission line lightning stroke situation provided by the embodiments of the present application determines method.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Attached drawing 1 shows that ground potential provided by the embodiments of the present application rises the basic structure of detecting system.As shown in Figure 1, this
The ground potential that application embodiment provides rises detecting system：The shared of sharing means 3 is connected by sharing means ground lead 5
Device independent grounding device 4, the sharing means independent grounding device 4 are used as institute independently of shared electric power tower earthing or grounding means 2
State the zero potential that ground potential rises detecting system；
The ground potential for connecting the shared electric power tower earthing or grounding means 2 and the sharing means independent grounding device 4 rises survey
Device 6 is measured, the ground potential rises measuring device 6 for measuring the shared electric power tower earthing or grounding means 2 and the sharing means
Potential difference between independent grounding device 4；
The data processing equipment 7 that the ground potential rises measuring device 6 is connected, the data processing equipment 7 is for receiving institute
Ground potential is stated to rise the measurement data of the output of measuring device 6 and carry out statistical disposition.
Shared electric power tower 1 refers to using the shared other industry of electric power transmission line steel tower (such as communication, meteorology etc.)
Technology.What shared electric power tower and circuit lightning conducter collectively formed electric power transmission line connects sudden strain of a muscle system, if sharing means 3 also share
The grounded screen of steel tower will be threatened as equipment ground by more frequently more serious lightning stroke counterattack voltage.Ground electricity provided by the present application
Position rises in detecting system, establishes the sharing means independent grounding device 4 of sharing means 3, is connected by sharing means ground lead 5
Sharing means 3 and sharing means independent grounding device 4
It is voltage measuring apparatus that ground potential, which rises measuring device 6, and ground potential rises measuring device 6 and is usually fixed mounted on shared
On electric power tower 1, shares electric power tower earthing or grounding means 2 and sharing means independent grounding device 4 and measuring device 4 is risen by ground potential
Connection, ground potential rise measuring device 6 for measure shared electric power tower earthing or grounding means 2 and sharing means independent grounding device 4 it
Between potential difference, i.e., shared electric power tower ground potential liter.
Data processing equipment 7 connects ground potential and rises 6 data output end of measuring device, and measuring device is risen for receiving ground potential
The monitoring voltage value of 6 transmission judges shared electricity according to the counting thunder threshold value of the monitoring voltage value and sets itself received
Whether power steel tower 1 is struck by lightning, when determine be struck by lightning when, add up number of lightning strokes, record lightning stroke generation time and
Shared electric power tower ground potential liter accordingly.Further, data processing equipment 7 can also show real-time monitoring voltage value, accumulative thunder
Hit number, nearest 10 lightning stroke time of origins and corresponding steel tower ground potential liter.
Ground potential provided by the embodiments of the present application rises detecting system, including sharing means independent grounding device 4, ground potential liter
Measuring device 6 and data processing equipment 7.Ground potential provided by the embodiments of the present application rises detecting system, by monitoring in real time altogether
The potential difference between electric power tower earthing or grounding means 2 and sharing means independent grounding device 4 is enjoyed, i.e., by with monitoring line steel tower in real time
Potential rise, to analyze situation of being struck by lightning along electric power transmission line.
Further, it further includes terminal server 8 that ground potential provided by the embodiments of the present application, which rises detecting system, the terminal clothes
Business device 8 is used to receive the measurement data and progress that all data processing equipments 7 are wirelessly transferred along electric power transmission line
Comprehensive analysis.As shown in Fig. 2, ground potential rises measuring device 6 by the shared electric power tower earthing or grounding means 2 monitored and shared dress
Set the potential difference between independent grounding device 4 etc. relevant informations be sent in data processing equipment 7, data processing equipment 7 will be located
Statistical result after reason and terminal server 8 is sent to by way of wireless transmission with the relevant data of statistical result.Eventually
Hold server 8 for the data that upper all data processing equipments 7 are wirelessly transferred along reception transmission line of electricity, to circuit edge
Line monitoring data carry out comprehensive analysis.
Detecting system is risen based on ground potential provided by the embodiments of the present application, present invention also provides transmission line lightning stroke situations
Determine method, as shown in Fig. 3, the method includes：
S101：Monitoring in real time obtains shared current potential between electric power tower earthing or grounding means and sharing means independent grounding device
Difference.
By ground potential rise measuring device obtain share electric power tower earthing or grounding means and sharing means independent grounding device it
Between potential difference, obtain ground potential rise measuring device measure obtain data.
S102：Compare the potential difference and counting thunder threshold value.
Counting thunder threshold value is set, by the shared electric power tower earthing or grounding means got and sharing means independent grounding device
Between potential difference be compared with the counting thunder threshold value.
Counting thunder threshold value can sets itself, initially set count threshold derive from theoretical research and analysis, system dress
If constantly adjusting count threshold by the same path monitoring result of across comparison after the completion until being consistent with actual conditions.Initial threshold
Value can be estimated by formula 1：
Wherein, U1--- local unit counting thunder initial threshold, V；
IG--- line-to-ground system minimum lightning stroke earth current, kA；
Ig--- the single steel tower minimum lightning stroke earth current of circuit, kA；
R1--- line steel tower surveys ground resistance, Ω；
N --- line steel tower quantity.
Note：If being difficult to obtain accurate line steel tower actual measurement ground resistance, R1It can 10 Ω of value.
To fully ensure that the true and accurate of lightning stroke statistics, transmission line lightning stroke situation provided by the present application determine method
In, the change of counting thunder threshold value can also be carried out when in use.Such as, power transmission line road described in the same time is counted
The shared electric power tower quantity being struck by lightning adjusts the counting thunder when the quantity is less than the occupancy volume threshold value of setting
Threshold value.At a time there are the individual certain shared electric power towers of judgement and lightning stroke judgement occur, changes these shared electric power iron
The corresponding counting thunder threshold value of tower.The foundation of counting thunder threshold value setting is operating experience, the steel tower quantity of same time lightning stroke
Etc. being intended only as one of operating experience.The potential difference measured when not being struck by lightning is very little, therefore initial threshold completely can be with
Set (for example being set as 10V) by rule of thumb.Because lightning stroke have dispersibility, when be struck by lightning different location when, the reaction of different steel towers
Difference is often bigger, therefore counting thunder threshold value is also needed to according to completely during ground potential rises detecting system operation
The monitoring data on road combine the actual conditions comprehensive analysis of operation.
S103：When the potential difference is more than the counting thunder threshold value, add up primary lightning stroke.
By between the shared electric power tower earthing or grounding means got and sharing means independent grounding device potential difference and institute
It states counting thunder threshold value to be compared, when potential difference is more than the counting thunder threshold value, judges that corresponding shared electric power tower meets with
It is struck by lightning, the number that shared electric power tower is struck by lightning cumulative 1.
S104：When judgement is struck by lightning, record implements monitoring potential difference and lightning stroke time of origin.
When the corresponding shared electric power tower of judgement is by being struck by lightning, record implements monitoring potential difference and lightning stroke time of origin,
In case a situation arises for the road lightning stroke of across comparison power transmission line.
S105：The lightning stroke data of all shared electric power towers in statistical analysis power transmission line road, it is defeated to calculate the electric power
Electric line lightning strike probability.
Obtain the lightning stroke data of all shared electric power towers in power transmission line road, all shared electric power towers of statistical analysis
Lightning stroke data, obtain electric power transmission line lightning strike probability.Definition in conjunction with lightning strike probability along transmission line of electricity and algorithm, provide
The lightning stroke situation of electric power transmission line describes.
In the application specific implementation mode, it includes year along transmission line of electricity to calculate the electric power transmission line lightning strike probability
Thunderbolt frequency and hundred meters of transmission line of electricity year thunderbolt frequency.Specifically：
Year thunderbolt frequency along computing electric power line
Wherein, NG linesFor year thunderbolt frequency along transmission line of electricity, secondary/km2, NLineFor transmission line of electricity year be struck by lightning total degree,
Times/year；S is transmission line of electricity earth-wire protection area, km2。
Hundred meters of computing electric power line year thunderbolt frequency
Wherein, NL linesHundred meters of transmission line of electricity year thunderbolt frequency, secondary/100m, NLineFor the total degree that is struck by lightning in transmission line of electricity year, l
For transmission line of electricity overall length, 100m.
Transmission line lightning stroke situation provided by the embodiments of the present application determines method, further includes situation of being struck by lightning along statistics circuit
Analysis and steel tower ground potential rise distribution trend, and data support is provided for the O&M and line-to-ground model construction of circuit.
Further, transmission line lightning stroke situation provided by the embodiments of the present application determines method, further includes：Show electric power transmission
The shared electric power tower earthing or grounding means of the nearest 10 lightning stroke time of origins of each steel tower and the shared electric power tower on circuit
With the potential difference between sharing means independent grounding device.Convenient for directly acquiring the feelings that shared electric power tower is struck by lightning recently
Condition.
Ground potential provided by the embodiments of the present application rises detecting system and transmission line lightning stroke situation determines method, is set for circuit
Meter provides parameter of lightning strike, and lightning protection strategy foundation is provided for circuit O&M, and providing data for line-to-ground system model structure supports；
And whether can need separately to build independent grounding device to share the shared equipment of steel tower and decision-making foundation is provided, and in operation
Sharing means grounding safety monitor in real time.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments, and related place is referring to side
The part of method embodiment illustrates.Those skilled in the art will be easy to think after considering the invention of specification and practice here
To other embodiments of the present invention.This application is intended to cover the present invention any variations, uses, or adaptations, these
Variations, uses, or adaptations follow the general principle of the present invention and include that the present invention does not invent in the art
Common knowledge or conventional techniques.The description and examples are only to be considered as illustrative, true scope of the invention and essence
God is indicated by the following claims.
It should be understood that the application is not limited to the precision architecture for being described above and being shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (7)
1. a kind of ground potential rises detecting system, which is characterized in that including：Sharing means are connected by sharing means ground lead
Sharing means independent grounding device, the sharing means independent grounding device are used as independently of shared electric power tower earthing or grounding means
The ground potential rises the zero potential of detecting system；
The shared electric power tower earthing or grounding means and the sharing means independent grounding device are connected, the ground potential, which rises, to be measured
Device is used to measure the potential difference between the shared electric power tower earthing or grounding means and the sharing means independent grounding device；
The data processing equipment that the ground potential rises measuring device is connected, the data processing equipment is for receiving the ground potential
It rises the measurement data of measuring device output and carries out statistical disposition.
2. ground potential according to claim 1 rises detecting system, which is characterized in that the system comprises：Terminal server,
The terminal server is used to receive the measurement data of all data processing equipment wireless transmissions along electric power transmission line
And carry out comprehensive analysis.
3. a kind of transmission line lightning stroke situation determines method, which is characterized in that the method includes：
Monitoring in real time obtains shared potential difference between electric power tower earthing or grounding means and sharing means independent grounding device；
Compare the potential difference and counting thunder threshold value；
When the potential difference is more than the counting thunder threshold value, add up primary lightning stroke；
When judgement is struck by lightning, record implements monitoring potential difference and lightning stroke time of origin；
The lightning stroke data of all shared electric power towers in statistical analysis power transmission line road calculate the electric power transmission line lightning stroke
Probability.
4. transmission line lightning stroke situation according to claim 3 determines method, which is characterized in that the method further includes：
The shared electric power tower quantity that power transmission line road is struck by lightning described in the same time is counted, is set when the quantity is less than
When fixed occupancy volume threshold value, the counting thunder threshold value is adjusted.
5. transmission line lightning stroke situation according to claim 3 determines method, which is characterized in that the method further includes：
Show the shared of the nearest 10 lightning stroke time of origins of each steel tower of power transmission line road and the shared electric power tower
Potential difference between electric power tower earthing or grounding means and sharing means independent grounding device.
6. transmission line lightning stroke situation according to claim 3 determines method, which is characterized in that described to calculate the electric power
Transmission line lightning stroke probability, including：
Year thunderbolt frequency along computing electric power line
Wherein, NG linesFor year thunderbolt frequency along transmission line of electricity, secondary/km2Year, NLineFor transmission line of electricity year be struck by lightning total degree, it is secondary/
Year；S is transmission line of electricity earth-wire protection area, km2。
7. transmission line lightning stroke situation according to claim 3 determines method, which is characterized in that described to calculate the electric power
Transmission line lightning stroke probability, including：
Hundred meters of computing electric power line year thunderbolt frequency
Wherein, NL linesHundred meters of transmission line of electricity year thunderbolt frequency, secondary/100m, NLineFor the total degree that is struck by lightning in transmission line of electricity year, l is defeated
Electric line overall length, 100m.
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| CN201810480407.7A CN108761175B (en) | 2018-05-18 | 2018-05-18 | Ground potential rise detection system and power transmission line lightning stroke condition determination method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244629A (en) * | 2020-01-08 | 2020-06-05 | 北方工业大学 | Lightning protection grounding method of shared iron tower |
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| CN111244629B (en) * | 2020-01-08 | 2021-08-17 | 北方工业大学 | Lightning protection grounding method of shared iron tower |
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| CN108761175B (en) | 2021-03-12 |
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