CN110412416A - Distribution line fault recording method and system - Google Patents
Distribution line fault recording method and system Download PDFInfo
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- CN110412416A CN110412416A CN201910633097.2A CN201910633097A CN110412416A CN 110412416 A CN110412416 A CN 110412416A CN 201910633097 A CN201910633097 A CN 201910633097A CN 110412416 A CN110412416 A CN 110412416A
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- distribution line
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000001186 cumulative effect Effects 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
The invention provides a method and a system for recording faults of a distribution line, which comprise the following steps: setting a corresponding current and/or voltage setting value and action setting time in the distribution line according to the distribution line information and the fault type of the distribution line; setting and recording the waveform of the current and/or the voltage in the distribution line within a period of time according to the current and/or the voltage value in the distribution line; monitoring current and/or voltage values in a distribution line to monitor whether the current and/or voltage values in the distribution line exceed current and/or voltage setting values in the distribution line; when the current and/or voltage value in the distribution line exceeds the current and/or voltage setting value in the distribution line, calculating time, and when the accumulated time is greater than the action setting time, judging that the distribution line has a fault; and when the distribution line is judged to have a fault, storing the current and/or voltage waveform in the distribution line recorded at the moment.
Description
Technical field
The invention belongs to electric power electrical apparatus technical fields, and in particular to a kind of distribution line failure Wave record method and be
System.
Background technique
Low tension by low-voltage distribution apparatus to power supply for electrical equipment when, if distribution loop occurs overload, long/short prolongs
When or the failures such as short circuit, the protection device such as breaker of low-voltage distribution apparatus configuration can then trip, but at present cannot be quasi-
The concrete reason of tripping really is told, therefore cannot find the severity of faulty circuit, it is most likely that is caused after closing a floodgate to matching
The injury of circuit and maintenance personal.So the invention discloses a kind of distribution line failure Wave record methods in view of problem above
It solves the above problems with system.
Summary of the invention
The purpose of the present invention is to overcome the defects in the prior art, provide a kind of distribution line failure Wave record method and
System can determine the specific fault type and abort situation of distribution line, can also automatically provide error protection measure, protect
Distribution line and maintenance personal's safety are hindered.
In order to achieve the above objectives, the present invention provides a kind of distribution line failure Wave record methods, comprising:
S1, according to distribution line information and its fault type, set in the corresponding distribution line electric current and/or
Voltage setting valve and movement setting time；According to electric current in distribution line and/or voltage value, in setting record a period of time
The waveform of electric current and/or voltage in the distribution line；
S2 monitors electric current and/or voltage value in distribution line, to supervise electric current and/or voltage value in the distribution line
It whether is more than electric current and/or voltage setting valve in the distribution line；
S3, when electric current in the distribution line and/or voltage value are more than electric current and/or voltage setting valve in distribution line
When time to count, when the cumulative time be greater than the movement setting time when, judge that the distribution line breaks down；
S4, when judging that the distribution line breaks down, store in the distribution line that records at this time electric current and/
Or voltage waveform.
Further, when judging that the distribution line breaks down, electricity in the distribution line recorded at this time is stored
After stream and/or voltage waveform, further includes: show electric current and/or voltage waveform in the distribution line of the storage.
Further, the electric current in the distribution line and/or voltage value be more than in distribution line electric current and/or
Time to count when voltage setting valve judges that event occurs for the distribution line when the cumulative time being greater than the movement setting time
After barrier, further includes: when being judged as that distribution line breaks down, the movement according to the cumulative time and setting is whole
It fixes time, analysis obtains corresponding distribution line failure type.
Wherein the distribution line failure type include it is following at least one: long/short delay of overload, short-circuit hit, electric leakage
Stream, over-voltage.
Further, according to the distribution line failure type and the specific distribution loop information is judged, institute is determined
State the position that distribution line breaks down.
Further, the fault type and abort situation of the distribution line hair are shown.
It further, further include opening the distribution line failure when judging that the distribution line breaks down and protecting
Shield.
Further, the distribution line failure protection refers to that opening breaker carries out the distribution line protection.
The present invention also provides a kind of distribution line failure recording systems, comprising:
Configuration unit sets electric current in the corresponding distribution line according to distribution line information and its fault type
And/or voltage setting valve and movement setting time；According to electric current in distribution line and/or voltage value, when setting records one section
The waveform of electric current and/or voltage in the interior distribution line；
Monitor unit, monitor electric current and/or voltage value in distribution line, with supervise in the distribution line electric current and/or
Whether voltage value is more than electric current and/or voltage setting valve in the distribution line；
Processing unit, when electric current in the distribution line and/or voltage value are more than electric current and/or voltage in distribution line
The time is calculated from when setting valve, when the cumulative time being greater than the movement setting time, discriminatory analysis is that event occurs for distribution line
Barrier；
Storage unit stores electric current in the distribution line recorded at this time when the distribution line breaks down
And/or the waveform of voltage.
Further, further include display unit, show the waveform of electric current and/or voltage in the distribution line of the storage.
A kind of distribution line failure Wave record method of the present invention and system, it has the advantage that: provided by the present invention
Method and system can pass through the waveform before and after record failure occurs in a period of time when distribution line breaks down
Data, the variation tendency in voltage and current size and certain time when learning line tripping, can also analyze to be out of order is
Belong to any of situations such as overloading short delay, short-circuit hit, leakage current, over-voltage, calculates the position of fault point, solve route
Failure problems reduce security risk, can carry out data statistics and analysis to the failure in the regular period, promote distribution environment
Upgrading, for distribution from now on change and change data basis is provided.
Detailed description of the invention
Fig. 1 is the flow chart of distribution line failure Wave record method provided in an embodiment of the present invention；
Fig. 2 is distribution line failure recording system structure diagram provided in an embodiment of the present invention.
Specific embodiment
The method and system of distribution control box combination switch of the invention are described in detail with reference to the accompanying drawing.
Embodiment one
As shown in Figure 1, the embodiment of the present invention one provides distribution line failure Wave record method, can by such as Fig. 2 match
Line fault recording system or terminal device including distribution line failure recording system execute the distribution line failure recording
Method.
The embodiment of the present invention one provides distribution line failure Wave record method, includes the following steps:
Step 101, according to distribution line information and its fault type, electric current in the corresponding distribution line is set
And/or voltage setting valve and movement setting time；According to electric current in distribution line and/or voltage value, when setting records one section
The waveform of electric current and/or voltage in the interior distribution line.
There are many type that distribution line breaks down, and common failure is long/short delay of overload, short-circuit hit, electric leakage
Stream, over-voltage etc..According to different fault types, current setting in the corresponding distribution line of fault type can be set and moved
Make setting time.Electric current and/or voltage setting valve can also according to the rated current and/or voltage of circuit setting, selection it is disconnected
Road device and nominal load determine；General movement setting time is to be determined by the fault type of distribution line, for example overload is set
It is set to 9s, overvoltage is set as 1.5-5s, length/short delay is set as 0.6s, the above electric current and/or voltage setting valve and movement
The setting of setting time is all the common knowledge of this field, therefore repeats no more.
When distribution line is powered, electric current and/or voltage waveform in distribution line can be set in record a period of time,
This waveform is the waveform of three-phase current, the waveform of zero-sequence current or three-phase voltage, residual voltage, is cached in and distribution line
Or the terminal of controller switching equipment communication.The waveform for recording in N number of period (N > 1 is integer) can be set, is chosen in the present embodiment
N is 8, that is to say, that when distribution line is powered, setting records the waveform in 8 periods, and waveform subsequent replacement starts waveform,
Periodicity is set to remain 8.
Step 102, electric current and/or voltage value in distribution line are monitored, with supervise in the distribution line electric current and/or
Whether voltage value is more than electric current and/or voltage setting valve in the distribution line.
Electric current and/or voltage value in real-time monitoring distribution line, according to electric current in distribution line in the 8 of setting periods
And/or voltage waveform, electric current and/or voltage effective value in the distribution line, and the distribution obtained described in supervision is calculated
In route the virtual value of electric current and/or voltage whether be more than according to distribution line failure type, rated current, nominal load or
The electric current and/or voltage setting valve of the settings such as breaker information, wherein according to the waveform of distribution electric current and/or voltage in the period
Calculating electric current and/or voltage effective value in distribution line is general knowledge known in this field.
Step 103, when electric current in the distribution line and/or voltage value are whole more than electric current in distribution line and/or voltage
Time to count when definite value judges that the distribution line breaks down when the cumulative time being greater than the movement setting time.
The distribution line obtained from monitoring the waveform recorded according to electric current in distribution line and/or voltage value
The virtual value of middle electric current and/or voltage, more than the setting electric current and/or voltage setting valve when, the start recording time, when
When cumulative time is greater than the movement setting time of the setting, judge that the distribution line will break down.When judging distribution
When line failure, can also more above-mentioned cumulative time and setting movement setting time, analysis obtain corresponding distribution
Line fault type.
Step 104, when judging that the distribution line breaks down, electricity in the distribution line recorded at this time is stored
Stream and/or voltage waveform.
When judging that the distribution line breaks down, store in the distribution line in 8 periods recorded at this time
The waveform of three-phase current, the waveform of zero-sequence current or three-phase voltage, residual voltage.In order to intuitively reflect existing distribution line
Fault condition, can also beyond the clouds, three-phase current, zero in the distribution line of the display such as operating terminal, the host computer storage
The fault type information that the waveform or three-phase voltage of sequence electric current, the waveform of residual voltage and analysis obtain, can also pass through behaviour
Make cloud, operating terminal, host computer etc. to obtain the specific data in relation to electric current and/or voltage waveform.
Illustrate by taking record current waveform as an example below, voltage waveform is also the same principle.It is opened after distribution line energization
Begin the three-phase current in 8 periods of record, the waveform of zero-sequence current, and the virtual value i of electric current in distribution line is calculated, works as prison
When measuring virtual value i and being more than the distribution line current setting I being set in advance, i.e. when i > I, start time to count, when accumulative
When time t is just above the distribution line movement setting valve T being set in advance, then judges that distribution line will break down, store
The waveform of the three-phase current in 8 periods recorded at this time, zero-sequence current.
Since the failure that distribution line occurs is usually its for overloading long/short delay, short-circuit hit, leakage current or over-voltage
Middle one kind can compare cumulative time t and movement setting time T difference to be supplied to the more detailed fault message of user,
As t-T ≈ 0, that is to say, that distribution line breaks down when t is just above T, according to the dynamic of every kind of line fault is set in advance
Make setting time T value, analyzes specifically overload, long/short delay, short-circuit hit, leakage current or any failure of over-voltage.
For example, be set in advance overload when movement setting time be 9s, if route occur overload cause circuit breaker trip protection,
Cumulative time, t just reached 9s, according to the 9s of cumulative time it can be concluded that the fault type of distribution line is overload.Similarly its
His failure mode analysis process is also equally, to be all the size for comparing the cumulative time and acting setting time, obtain corresponding
Fault type.
When distribution line breaks down, Wave data, the tool of electric current and/or voltage when being occurred by display failure
Body failure cause, brings convenience maintenance personal, has ensured that route by secondary injury, does not protect personnel and equipment safety.
The present embodiment in distribution line failure Wave record method, judging that the distribution line breaks down after, can be with
Make a concrete analysis of the location of fault and information, specific steps are as follows: when judge the distribution line break down for overload
When length/short delay, short-circuit hit, leakage current or wherein that reason of over-voltage, then check specifically that distribution loop generation
Failure is that load excessive, short circuit or electric leakage calculate the specific position analyzing the distribution line and breaking down according to fault type
It sets.For example the failure that distribution line occurs is load excessive, then checks the maximum rated electricity of the distribution line specifically to break down
Stream and maximum rated voltage value and maximum load information, then determine whether to have exceeded according to the actual loading of distribution line
The nominal load of distribution line, if more than, then judgement be more than nominal load at which specific load, it is determined that tool
The position that body breaks down.Fault locator can certainly be installed in distribution line, when line failure, led to
The detection for crossing fault locator obtains the abort situation of distribution line.
But also can beyond the clouds, the display such as operating terminal, host computer distribution line failure position, maintenance personal passes through
Cloud, operating terminal, host computer etc. are operated to obtain the specific data in relation to abort situation.
Embodiment two
Referring to Fig. 2, the structural block diagram of distribution line failure recording system provided by Embodiment 2 of the present invention is shown, is led to
Distribution line failure Wave record method as shown in Figure 1 can be performed in the distribution line failure recording system crossed in the present embodiment.Specifically
Ground, distribution line failure recording system may include such as lower unit:
Configuration unit 201 is set in the corresponding distribution line according to distribution line information and its fault type
Electric current and/or voltage setting valve and movement setting time；According to electric current in distribution line and/or voltage value, setting record one
The waveform of electric current and/or voltage in the distribution line in the section time；
Unit 202 is monitored, electric current and/or voltage value in distribution line are monitored, to supervise electric current in the distribution line
And/or whether voltage value is more than electric current and/or voltage setting valve in the distribution line；
Processing unit 203, when electric current in the distribution line and/or voltage value are more than electric current and/or electricity in distribution line
The time is calculated from when repoussage definite value, when the cumulative time being greater than the movement setting time, discriminatory analysis is distribution line
Failure；
Storage unit 204 stores electricity in the distribution line recorded at this time when the distribution line breaks down
The waveform of stream and/or voltage.
Display unit 205 shows the waveform of electric current and/or voltage in the distribution line of the storage.
The distribution line failure recording in embodiment one can be performed in distribution line failure recording system through this embodiment
Method and the technical effect for realizing this method, details are not described herein.
More than, only specific embodiments of the present invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of distribution line failure Wave record method characterized by comprising
It is whole to set electric current and/or voltage in the corresponding distribution line according to distribution line information and its fault type by S1
Definite value and movement setting time；According to electric current in distribution line and/or voltage value, the distribution in setting record a period of time
Electric current and/or voltage waveform in route；
S2 monitors electric current and/or voltage value in distribution line, whether to supervise in the distribution line electric current and/or voltage value
More than electric current in the distribution line and/or voltage setting valve；
S3, when electric current in the distribution line and/or voltage value be more than in distribution line electric current and/or when voltage setting valve start
Time judges that the distribution line breaks down when the cumulative time being greater than the movement setting time；
S4 stores electric current and/or voltage in the distribution line recorded at this time when judging that the distribution line breaks down
Waveform.
2. distribution line failure Wave record method according to claim 1, which is characterized in that when judging that the distribution line occurs
When failure, after storing in the distribution line that records at this time electric current and/or voltage waveform, further includes: show the storage
Distribution line in electric current and/or voltage waveform.
3. distribution line failure Wave record method according to claim 1, which is characterized in that described when electricity in the distribution line
Time to count when stream and/or voltage value are more than electric current in distribution line and/or voltage setting valve is greater than described move when the cumulative time
When making setting time, after judging that the distribution line breaks down, further includes:
When being judged as that distribution line breaks down, according to the movement setting time of the cumulative time and setting, analysis
Obtain corresponding distribution line failure type.
4. distribution line failure Wave record method according to claim 3, which is characterized in that the distribution line failure type packet
Include it is following at least one: long/short delay of overload, short-circuit hit, leakage current, over-voltage.
5. distribution line failure Wave record method according to claim 3, which is characterized in that according to judging the distribution line therefore
Hinder type and the specific distribution loop information, determines the position that the distribution line breaks down.
6. distribution line failure Wave record method according to claim 5, which is characterized in that show the event of the distribution line hair
Hinder type and abort situation.
7. distribution line failure Wave record method according to claim 1, which is characterized in that further include: when judging the distribution
When line failure, the distribution line failure protection is opened.
8. distribution line failure Wave record method according to claim 7, which is characterized in that the distribution line failure, which is protected, is
Refer to that opening breaker carries out the distribution line protection.
9. a kind of distribution line failure recording system characterized by comprising
Configuration unit, according to distribution line information and its fault type, set in the corresponding distribution line electric current and/or
Voltage setting valve and movement setting time；According to electric current in distribution line and/or voltage value, institute in setting record a period of time
State the waveform of electric current and/or voltage in distribution line；
Unit is monitored, electric current and/or voltage value in distribution line are monitored, to supervise electric current and/or voltage in the distribution line
Whether value is more than electric current and/or voltage setting valve in the distribution line；
Processing unit is more than electric current and/or voltage setting valve in distribution line when electric current in the distribution line and/or voltage value
When time to count, when the cumulative time be greater than the movement setting time when, judge that the distribution line breaks down；
Storage unit, when judging that the distribution line breaks down, store in the distribution line that records at this time electric current and/
Or voltage waveform.
10. distribution line failure recording system according to claim 9, it is characterised in that further include display unit, show institute
State the waveform of electric current and/or voltage in the distribution line of storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910633097.2A CN110412416A (en) | 2019-07-04 | 2019-07-04 | Distribution line fault recording method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910633097.2A CN110412416A (en) | 2019-07-04 | 2019-07-04 | Distribution line fault recording method and system |
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| Publication Number | Publication Date |
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| CN110412416A true CN110412416A (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910633097.2A Pending CN110412416A (en) | 2019-07-04 | 2019-07-04 | Distribution line fault recording method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467696A (en) * | 2020-10-20 | 2021-03-09 | 宁波大家小家网络科技有限公司 | Power distribution system management device and method |
-
2019
- 2019-07-04 CN CN201910633097.2A patent/CN110412416A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467696A (en) * | 2020-10-20 | 2021-03-09 | 宁波大家小家网络科技有限公司 | Power distribution system management device and method |
| CN112467696B (en) * | 2020-10-20 | 2023-10-24 | 宁波大家小家网络科技有限公司 | Power distribution system management device and method |
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