CN104142444B - Wind energy turbine set fault pre-alarming device based on zero mould current traveling wave - Google Patents
Wind energy turbine set fault pre-alarming device based on zero mould current traveling wave Download PDFInfo
- Publication number
- CN104142444B CN104142444B CN201410328888.1A CN201410328888A CN104142444B CN 104142444 B CN104142444 B CN 104142444B CN 201410328888 A CN201410328888 A CN 201410328888A CN 104142444 B CN104142444 B CN 104142444B
- Authority
- CN
- China
- Prior art keywords
- wave disturbance
- disturbance
- row
- time
- row wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 238000000605 extraction Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Abstract
The invention provides a kind of wind energy turbine set fault pre-alarming device based on zero mould current traveling wave, including: collecting unit, gather zero mould current traveling wave on wind energy turbine set collection electric line and all blower fan circuits；Select unit, according to the time relationship of all zero mould current traveling waves, select the measurement point of wave disturbance minimal time；Computing unit, calculate row wave disturbance source circuit and the time interval of row wave disturbance occurs for the most continuous three times, and utilize judging unit, it is judged that and described time interval and the size at setting time interval, if time interval value of calculation is less than setting valve, send fault pre-alarming signal.Pass through technical scheme, it is possible to provide wind energy turbine set internal fault early warning information in time, it is ensured that wind energy turbine set safe operation.
Description
Technical field
The present invention relates to field of relay protection in power technical field, in particular to a kind of base
Wind energy turbine set fault pre-alarming device in zero mould current traveling wave.
Background technology
Wind energy turbine set is the important component part of a new generation's electrical network.At present, large-scale wind energy turbine set fault is led
The off-grid accident caused, brings the biggest hidden danger to the stable safe operation of power system.
But, the troubleshooting of current power system concentrate on fault occur after quickly having selection every
From faulty equipment, it it is a kind of strategy afterwards processed.If fault progression process can be accurately identified, real
Existing fault pre-alarming, not only will be greatly improved the reliability of power system, reduce breakdown loss, also will have
Make every effort to promote the development into electric power system fault treatment technology.
Accordingly, it would be desirable to a kind of new technical scheme, the fault of wind energy turbine set can be detected in real time, and right
The fault of wind energy turbine set carries out early warning, to reduce breakdown loss.
Summary of the invention
The present invention is based on the problems referred to above, it is proposed that a kind of new technical scheme, can examine in real time
Survey the fault of wind energy turbine set, and the fault of wind energy turbine set is carried out early warning, to reduce breakdown loss.
In view of this, the present invention proposes a kind of wind energy turbine set fault pre-alarming based on zero mould current traveling wave dress
Put, including collecting unit, be arranged on the measurement point on the collection electric line of wind energy turbine set and blower fan circuit
Place, for gathering all described zero mould current traveling waves measuring point；Judging unit, be connected to described in adopt
Collection unit, it is judged that whether the measured value of each described described zero mould current traveling wave measuring point is more than row ripple
Disturbance threshold value；If the measured value of each described zero mould current traveling wave is all higher than described row wave disturbance threshold
Value, then judge described wind energy turbine set generation row wave disturbance, simultaneously record disturbance time of origin；Obtain single
Unit, is connected to described judging unit, obtains all measurement point 128 microseconds before and after disturbance occurs the moment
Interior row ripple；Extraction unit, is connected to described acquiring unit, extracts all row wave disturbance measuring point
Time；Select unit, be connected to described extraction unit, when comparing the most all row wave disturbance measuring point
Between, select measuring point and selecting the survey with described row wave disturbance minimal time of row wave disturbance minimal time
All measurement points that amount point is adjacent；Computing unit, is connected to described selection unit, calculates each described
The difference measuring point and the row wave disturbance time of described adjacent measurement points of row wave disturbance minimal time；Institute
State judging unit to be additionally operable to: judge whether each described difference is propagated two less than zero line ripple and measured point
Required time threshold；And, if each described difference is respectively less than described time threshold, then judge
It is row wave disturbance source circuit that said two measures circuit between point；If each described difference is all higher than or
Equal to described time threshold, then judge the measurement point place blower fan circuit of described row wave disturbance minimal time
For row wave disturbance source circuit；Described computing unit is additionally operable to: calculate described row wave disturbance source circuit nearest
The time interval that three times occur row wave disturbance；And described judging unit is additionally operable to: judge described row ripple
Whether the time interval of nearest three the row wave disturbance of disturbing source circuit is more than time interval setting valve；If
Described time interval is less than described setting valve, then send fault pre-alarming signal.
In this technical scheme, when insulation weak spot occurs in operating power circuit, or run ring
When border degenerates, under ac cycle power-frequency voltage effect, power circuit insulation weak spot will be dodged
Network, produces disturbance row ripple, and described disturbance row ripple will be propagated in power system, therefore, by obtaining
Take route survey point, disturbance row ripple can be obtained；, propagate in systems, meanwhile on all circuits all
Disturbance row ripple to be detected, but the polarity of traveling wave phase of polarity and the All other routes due to disturbance source row ripple
Instead, based on the polar relationship of current traveling wave obtained on all circuits, can effective identifying rows wave disturbance
Source.Further, since the disturbance row ripple on circuit differs, to establish a capital be fault omen, it is also possible to due to disconnected
Road device switching manipulation causes, or is struck by lightning what power system caused, but by apparatus insulated in running
Property to reduce the row ripple that causes be regular, and three-phase alternating current Force system working voltage is periodically electricity
Pressure, therefore fault omen row ripple will be regular, the most repeatedly occur, and its
His disturbance row ripple is random comparatively speaking, discrete, and disturbance time interval is relatively long.Cause
This, by comparing the difference measured between point and adjacent described measurement point of row wave disturbance minimal time
Size with the time interval of the size of time reference value and row wave disturbance with time interval setting valve
(detection disturbance row ripple the most continuously), can identify fault omen or system disturbance exactly,
And then the fault of wind energy turbine set is carried out early warning exactly, to reduce breakdown loss.
By above technical scheme, the fault of wind energy turbine set, and the event to wind energy turbine set can be detected in real time
Barrier carries out early warning, to reduce breakdown loss.
Accompanying drawing explanation
Fig. 1 shows wind energy turbine set electrical system architecture schematic diagram according to an embodiment of the invention.
Fig. 2 shows wind energy turbine set based on zero mould current traveling wave according to an embodiment of the invention event
The structural representation of barrier prior-warning device.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from other modes described here, therefore, and the present invention
Protection domain do not limited by following public specific embodiment.
Fig. 1 shows wind energy turbine set electrical system architecture schematic diagram according to an embodiment of the invention.
As shown in Figure 1, it is shown that wind energy turbine set electrical system architecture according to an embodiment of the invention
Schematic diagram, as a example by Fig. 1, will illustrate wind energy turbine set based on the zero mould current traveling wave event of the present invention below
The principle of barrier prior-warning device.
Fig. 2 shows wind energy turbine set based on zero mould current traveling wave according to an embodiment of the invention event
The structural representation of barrier prior-warning device.
As in figure 2 it is shown, wind energy turbine set based on zero mould current traveling wave according to an embodiment of the invention
Fault pre-alarming device 200, including: collecting unit 202, it is arranged on collection electric line and the wind of wind energy turbine set
The measurement point of machine circuit, for gathering all described zero mould current traveling waves measuring point；Judging unit
204, it is connected to described collecting unit, it is judged that each described described zero mould current traveling wave measuring point
Whether measured value is more than row wave disturbance threshold value；If the measured value of each described zero mould current traveling wave is the biggest
In described row wave disturbance threshold value, then judge that described wind energy turbine set generation row wave disturbance, record disturbance simultaneously are sent out
The raw time；Acquiring unit 206, is connected to described judging unit, obtains all points of measuring and sends out in disturbance
Row ripple in 128 microseconds before and after the raw moment；Extraction unit 208, is connected to described acquiring unit, carries
Take all row wave disturbance time measuring point；Select unit 210, be connected to described extraction unit, than
More all measure point the row wave disturbance times, select row wave disturbance minimal time measurement point and select with
Adjacent all measurement points are put in measuring of described row wave disturbance minimal time；Computing unit 212, connects
To described selection unit, calculate the measurement point of each described row wave disturbance minimal time and described adjacent survey
The difference of the row wave disturbance time of amount point；Described judging unit 204 is additionally operable to: judge each described difference
Whether value propagates two time thresholds measured needed for point less than zero line ripple；And, if each institute
State difference and be respectively less than described time threshold, then judge that said two measures between some circuit as row wave disturbance
Source circuit；If each described difference is all higher than or equal to described time threshold, then judges described row ripple
The measurement point place blower fan circuit of disturbance minimal time is row wave disturbance source circuit；Described computing unit
212 are additionally operable to: calculate between the time that described row wave disturbance source circuit occurs row wave disturbance nearest three times
Every；And described judging unit 204 is additionally operable to: judge described row wave disturbance source nearest three row of circuit
Whether the time interval of wave disturbance is more than time interval setting valve；If described time interval is less than described
Setting valve, then send fault pre-alarming signal.
In this technical scheme, when insulation weak spot occurs in operating power circuit, or run ring
When border degenerates, under ac cycle power-frequency voltage effect, power circuit insulation weak spot will be dodged
Network, produces disturbance row ripple, and described disturbance row ripple will be propagated in power system, therefore, by obtaining
Take route survey point, disturbance row ripple can be obtained；, propagate in systems, meanwhile on all circuits all
Disturbance row ripple to be detected, but the polarity of traveling wave phase of polarity and the All other routes due to disturbance source row ripple
Instead, based on the polar relationship of current traveling wave obtained on all circuits, can effective identifying rows wave disturbance
Source.Further, since the disturbance row ripple on circuit differs, to establish a capital be fault omen, it is also possible to due to disconnected
Road device switching manipulation causes, or is struck by lightning what power system caused, but by apparatus insulated in running
Property to reduce the row ripple that causes be regular, and three-phase alternating current Force system working voltage is periodically electricity
Pressure, therefore fault omen row ripple will be regular, the most repeatedly occur, and its
His disturbance row ripple is random comparatively speaking, discrete, and disturbance time interval is relatively long.Cause
This, by comparing the difference measured between point and adjacent described measurement point of row wave disturbance minimal time
Size with the time interval of the size of time reference value and row wave disturbance with time interval setting valve
(detection disturbance row ripple the most continuously), can identify fault omen or system disturbance exactly,
And then the fault of wind energy turbine set is carried out early warning exactly, to reduce breakdown loss.
Technical scheme is described in detail above in association with accompanying drawing, by above technical scheme, can
To detect the fault of wind energy turbine set in real time, and the fault of wind energy turbine set is carried out early warning, to reduce fault damage
Lose.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (1)
1. a wind energy turbine set fault pre-alarming device based on zero mould current traveling wave, it is characterised in that bag
Include:
Collecting unit, is arranged on the measurement point on the collection electric line of wind energy turbine set and blower fan circuit, is used for
Gather all described zero mould current traveling waves measuring point；
Judging unit, is connected to described collecting unit, it is judged that each described described zero mould electricity measuring point
Whether the measured value of popular ripple is more than row wave disturbance threshold value；If the survey of each described zero mould current traveling wave
Value is all higher than described row wave disturbance threshold value, then judge described wind energy turbine set generation row wave disturbance, remember simultaneously
Record disturbance time of origin；
Acquiring unit, is connected to described judging unit, obtains all points of measuring before disturbance occurs the moment
Row ripple in rear 128 microseconds；
Extraction unit, is connected to described acquiring unit, extracts all row wave disturbance time measuring point；
Select unit, be connected to described extraction unit, the most all row wave disturbance times measuring point,
Select measuring point and selecting the measurement point with described row wave disturbance minimal time of row wave disturbance minimal time
Adjacent all measurement points；
Computing unit, is connected to described selection unit, calculates each described row wave disturbance minimal time
Measure the difference of point and the row wave disturbance time of described adjacent measurement points；
Described judging unit is additionally operable to: judge whether each described difference propagates two less than zero line ripple
Measure the time threshold needed for point；And, if each described difference is respectively less than described time threshold,
Then judge that said two measures between some circuit as row wave disturbance source circuit；If each described difference is equal
More than or equal to described time threshold, then judge the measurement point place wind of described row wave disturbance minimal time
Machine circuit is row wave disturbance source circuit；
Described computing unit is additionally operable to: calculates described row wave disturbance source circuit and occurs row ripple to disturb nearest three times
Dynamic time interval；And
Described judging unit is additionally operable to: judge described row wave disturbance source nearest three the row wave disturbance of circuit
Whether time interval is more than time interval setting valve；If described time interval is less than described setting valve,
Then send fault pre-alarming signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328888.1A CN104142444B (en) | 2014-07-11 | 2014-07-11 | Wind energy turbine set fault pre-alarming device based on zero mould current traveling wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328888.1A CN104142444B (en) | 2014-07-11 | 2014-07-11 | Wind energy turbine set fault pre-alarming device based on zero mould current traveling wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104142444A CN104142444A (en) | 2014-11-12 |
| CN104142444B true CN104142444B (en) | 2016-09-21 |
Family
ID=51851676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410328888.1A Active CN104142444B (en) | 2014-07-11 | 2014-07-11 | Wind energy turbine set fault pre-alarming device based on zero mould current traveling wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104142444B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411710A (en) * | 2022-10-14 | 2022-11-29 | 国网山东省电力公司东营市河口区供电公司 | Anti-islanding protection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533062A (en) * | 2009-04-03 | 2009-09-16 | 清华大学 | Power cable on-line insulated monitoring method based on traveling wave electric amount measurement |
| CN102420420A (en) * | 2011-12-05 | 2012-04-18 | 清华大学 | Single-phase grounding protection method and system |
| CN103454521A (en) * | 2013-08-02 | 2013-12-18 | 国家电网公司 | Wind power plant power grid operation simulator |
| CN103630799A (en) * | 2013-12-06 | 2014-03-12 | 清华大学 | Fault early warning system and fault early warning method for distribution lines |
-
2014
- 2014-07-11 CN CN201410328888.1A patent/CN104142444B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533062A (en) * | 2009-04-03 | 2009-09-16 | 清华大学 | Power cable on-line insulated monitoring method based on traveling wave electric amount measurement |
| CN102420420A (en) * | 2011-12-05 | 2012-04-18 | 清华大学 | Single-phase grounding protection method and system |
| CN103454521A (en) * | 2013-08-02 | 2013-12-18 | 国家电网公司 | Wind power plant power grid operation simulator |
| CN103630799A (en) * | 2013-12-06 | 2014-03-12 | 清华大学 | Fault early warning system and fault early warning method for distribution lines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104142444A (en) | 2014-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Azizi et al. | A traveling-wave-based methodology for wide-area fault location in multiterminal DC systems | |
| CN101943737B (en) | Single-phase earth fault diagnosis method and device | |
| SE536143C2 (en) | Method for detecting earth faults in three-phase electric power distribution network | |
| CN104330708B (en) | Fault location method for wide area traveling wave signal below power grid | |
| CN103245897A (en) | Detection method for photovoltaic system direct current fault arc by using multicriterion | |
| CN102780211A (en) | Distribution line single-phase grounding traveling wave protection method | |
| CN101975911A (en) | Earth fault judging method for overhead line fault indicator | |
| CN105676088A (en) | Device and method for testing fault arc detection apparatus | |
| JP6310334B2 (en) | Insulation degradation diagnosis device and method for power cable or electrical equipment | |
| CN109239524A (en) | A kind of low current method for locating single-phase ground fault based on three-phase current amplitude | |
| CN106771881A (en) | The method and device of Single-phase Ground Connection Failure is positioned in star-like three-phase ungrounded power systems | |
| CN108845233A (en) | Electric distribution network overhead wire single-phase earthing double-end monitor localization method | |
| CN106324437B (en) | A kind of detection method of the hidden danger discharge current based on voltage extremity | |
| CN108845219B (en) | A kind of recognition methods of System for HVDC System Earth Pole line fault | |
| CN102983569A (en) | Positioning method for oscillation source of low-frequency oscillation of electric system | |
| CN103645419B (en) | The fault early warning system of wind energy turbine set power circuit and method | |
| CN104502804B (en) | The recognition methods of transmission line lightning stroke failure and lightning fault type and system | |
| CN103884930A (en) | Full bridge uncontrolled rectifier fault diagnosis method based on insulation monitoring | |
| CN107462803A (en) | A kind of magnetic suspension train supply line plus earth selection method | |
| CN104142444B (en) | Wind energy turbine set fault pre-alarming device based on zero mould current traveling wave | |
| CN104090211B (en) | A kind of online test method of distribution line high resistance earthing fault | |
| CN106405351A (en) | Partial discharge detection system for switch cabinet | |
| CN205353294U (en) | Fault electric arc detecting device's test equipment | |
| CN105372478A (en) | A distributing line transient state grounding current detection method and device | |
| CN105842582B (en) | Flexible direct current circuit fault distance measurement based on EMTR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |