CN104882329A - Vacuum interrupter non-contact vacuum degree on-line monitoring device and method - Google Patents
Vacuum interrupter non-contact vacuum degree on-line monitoring device and method Download PDFInfo
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- CN104882329A CN104882329A CN201510263264.0A CN201510263264A CN104882329A CN 104882329 A CN104882329 A CN 104882329A CN 201510263264 A CN201510263264 A CN 201510263264A CN 104882329 A CN104882329 A CN 104882329A
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- vacuum
- network analyzer
- vacuum interrupter
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- detector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
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Abstract
The invention discloses a vacuum interrupter non-contact vacuum degree on-line monitoring device and method. The device comprises a frequency sweep signal source. The frequency sweep signal source is connected with a power divider. The output of the power divider is connected with two paths, one path is connected with a network analyzer via a transmitting antenna, a to-be-tested vacuum interrupter, a receiving antenna sensor and a detector, and the other path is successively connected with a detector and the network analyzer. The network analyzer is connected with a data collection and analysis processing unit. The device can realize the active on-line detection of the vacuum interrupter and the passive on-line detection of the indoor vacuum degree of the vacuum arcing chamber. The invention overcomes the defect of the traditional off-line test, and at the same time reduces errors in aspects of the measurement process and the actual working condition.
Description
Technical field
The invention belongs to vacuum-degree monitoring technical field, relate to a kind of vacuum interrupter Non-contact vacuum degree on-Line Monitor Device, the invention still further relates to vacuum interrupter Non-contact vacuum degree on-line monitoring method.
Background technology
Along with vacuum switch is widely applied in mesolow field, and the detection of vacuum degree has become one of important content of most vacuum circuit-breaker repair based on condition of component.In fact, vacuum degree is also one of principal element determining vacuum interrupter break performance, and in order to realize disjunction and the arc extinguishing of electric current, the pressure of vacuum extinction indoor should not higher than 1.33 × 10
-2pa, the reduction of vacuum degree will directly affect the break performance of vacuum circuit-breaker.Because vacuum switch is through use for many years, along with contact material in drop-out current process produces the reduction that increasing of gas and leakage that vacuum interrupter itself is faint can cause vacuum degree in arc control device.We need to find a kind of method that method of operation is easy, accuracy is high to assess its vacuum degree situation.
In the vacuum-degree monitoring technical field of vacuum circuit-breaker, extensively adopt off-line monitoring technology and on-line monitoring technique.Off-line monitoring, needs power-off to detect system, therefore can produce certain influence to power consumer; After power-off, vacuum interrupter indoor design condition and running status inconsistent, thus affect judgment accuracy.The relative offline inspection of on-line checkingi has more real-time, and it requires that the installation of checkout equipment, operation, signals collecting do not affect circuit breaker and normally run, and is the Main Means of current state monitoring and failure diagnosis.On-line monitoring is domestic emerging vacuum detecting means, requires to detect arc control device vacuum degree situation of change in real time, secondly under the prerequisite of less electric power system action, has higher flexibility.Based on the Electromagnetic Wave Detection method of arc extinguishing chamber particle partial discharge principle, analyzed the variation tendency of vacuum level of vacuum arc-quenching chamber by the indoor particle partial discharge of monitoring vacuum extinction.Signal is carried out in time, comprehensive analysis and judgement all sidedly, accumulate a large amount of data with find and seizure lead Chang Xianxiang, guarantee that vacuum circuit-breaker normally runs.This is the problem that operation maintenance personnel is extremely concerned about, is the developing direction of intelligent high-voltage fence.
Summary of the invention
The object of this invention is to provide a kind of vacuum interrupter Non-contact vacuum degree on-Line Monitor Device, on-line monitoring can be realized and well solve in background technology again the problem mentioned in actual monitoring process.
Another object of the present invention is to provide a kind of vacuum interrupter Non-contact vacuum degree on-line monitoring method.
The technical solution adopted in the present invention is, a kind of vacuum interrupter Non-contact vacuum degree on-Line Monitor Device, comprise swept signal source, swept signal source is connected with power divider, power divider exports and connects two-way, one route transmitting antenna, vacuum interrupter to be measured, reception antenna transducer, detector are connected with network analyzer, and another road that power divider exports connects detector, network analyzer successively, and network analyzer is connected with data collection and analysis processing unit.
Another kind of technical scheme of the present invention is, a kind of vacuum interrupter Non-contact vacuum degree on-line monitoring method, comprise initiatively on-line checkingi with by on-line checkingi, initiatively on-line checkingi comprises the following steps: utilize microwave signal to export from swept signal source, two paths of signals is become after power divider, one tunnel is directly through detector input network analyzer, another road radiate through transmitting antenna, radiation signal is in the indoor generation reflection of vacuum extinction to be measured, transmission, loss signal inputs another passage of network analyzer by detector, utilize computer bus technology, real collection when data collection and analysis processing unit carries out the two paths of data on network analyzer, again the data collected are amplified, filtering, contrast process, thus indirectly obtain the indoor vacuum condition of vacuum extinction, passive on-line checkingi comprises the following steps: directly utilize reception antenna transducer to receive the partial discharge of vacuum extinction indoor to be measured, through data collection and analysis processing unit, the data collected are amplified again, filtering, contrast process, thus indirectly obtain the indoor vacuum condition of vacuum extinction.
The invention has the beneficial effects as follows, the indoor vacuum degree of vacuum circuit-breaker vacuum extinction in running can progressively decline, and vacuum leak to a certain extent, exists high-pressure discharge phenomenon in arc control device, and produces with various physics, electromagnetic signal.Hermetically-sealed construction due to vacuum circuit-breaker complexity does not allow user to overhaul with conventional means yet.Utilize Microwave Detecting Technology to realize vacuum degree on-line monitoring and become one of the important means in primary equipment repair based on condition of component field.Based on vacuum circuit breaker operation principle and current demand, utilize the advantage of Microwave Detecting Technology, consider that in actual mesohigh operation of power networks process, the vacuum leak process of vacuum circuit-breaker is very slow.On-line measurement device of the present invention, under the effect of microwave sweep signal source generator, when utilizing electromagnetic wave by material, can reflect, vacuum degree that transmission, the characteristic such as absorption come Real-Time Monitoring vacuum extinction indoor.Well solve and judge because passive detection accepts by antenna sensing device the weak electromagnetic signal that vacuum interrupter partial discharge produces the vacuum degree leakage process problem slowly that vacuum extinction is indoor.There is the vacuum interrupter of vacuum on-line checkingi, the passive on-line checkingi of the online active detecting of vacuum interrupter and the indoor vacuum degree of vacuum extinction can be realized simultaneously.Overcome the defect that conventional offline detects, also reduce measuring process error and actual working environment error simultaneously.
Accompanying drawing explanation
Fig. 1 is on-Line Monitor Device structural representation of the present invention.
In figure, 1, swept signal source; 2, power divider; 3, transmitting antenna; 4, vacuum interrupter to be measured; 5, reception antenna transducer; 6, detector; 7, network analyzer; 8, data collection and analysis processing unit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of vacuum interrupter Non-contact vacuum degree on-Line Monitor Device, structure as shown in Figure 1, comprise swept signal source 1, swept signal source 1 is connected with power divider 2, power divider 2 exports and connects two-way, one route transmitting antenna 3, vacuum interrupter to be measured 4, reception antenna transducer 5, detector 6 are connected with network analyzer 7, and another road that power divider 2 exports connects detector 6, network analyzer 7 successively, and network analyzer 7 is connected with data collection and analysis processing unit 8.
A kind of vacuum interrupter Non-contact vacuum degree on-line monitoring method, comprise initiatively on-line checkingi with by on-line checkingi.
Initiatively on-line checkingi: utilize microwave signal to export from swept signal source 1, two paths of signals is become after power divider 2, one tunnel directly inputs network analyzer 7 through detector 6, another road radiate through transmitting antenna 3, radiation signal produces reflection in vacuum interrupter 4 to be measured, transmission, the signals such as loss input another passage of network analyzer 7 by detector 6, utilize computer bus technology, real collection when two paths of data on data collection and analysis processing unit 8 pairs of network analyzers 7 is carried out, again the data collected are amplified, filtering, contrast process, thus indirectly can obtain the indoor vacuum condition of vacuum extinction.
Passive on-line checkingi: directly utilize reception antenna transducer 5 to receive partial discharge in vacuum interrupter 4 to be measured, through data collection and analysis processing unit 8, the data collected are amplified again, filtering, contrast process, thus indirectly can obtain the indoor vacuum condition of vacuum extinction.
Because vacuum arc extinguish chamber housing is generally made up of inorganic insulating materials such as pottery or glass, cylindrically, the closed container that two ends form with metal cover board sealing-in, there is a pair hoe inside, dynamic/static contact is fixed on static conductive rod, moving contact is fixed on moving conductive rod, is full of insulating gas in internal high pressure environment.The method is to affect vacuum interrupter and normally works under prerequisite, and the ionic current measuring electric discharge obtains vacuum degree, realizes vacuum degree non-contact electromagnetic and detects.
The Frequency point that transmitting antenna 3 selects reflection power less designs, and reception antenna transducer adopts a kind of planar microstrip sensing antenna, and filter and amplification, signal processing unit are mainly in order to realize the collection to target data.
Reception antenna transducer 5 is for detecting the faint electromagnetic wave signal receiving and produce through particle partial discharge in vacuum interrupter 4 to be measured, analyze the local discharge signal and original time-domain signal that receive, two basic parameters can be obtained: the frequency of discharge phase (i.e. the phase place of power-frequency voltage residing for discharge pulse), electric discharge.
Data collection and analysis processing unit 8 according to signal spectrum feature extraction useful signal, then contrasts with primary signal after carrying out corresponding amplification filtering and signal transacting to the received signal.Here active computer software engineering is mainly adopted to carry out filtering, time frequency analysis, comparative analysis etc. to the small-signal received.
Claims (3)
1. a vacuum interrupter Non-contact vacuum degree on-Line Monitor Device, it is characterized in that, comprise swept signal source (1), swept signal source (1) is connected with power divider (2), power divider (2) exports and connects two-way, one route transmitting antenna (3), vacuum interrupter to be measured (4), reception antenna transducer (5), detector (6) is connected with network analyzer (7), another road that power divider (2) exports connects detector (6) successively, network analyzer (7), network analyzer (7) is connected with data collection and analysis processing unit (8).
2. a kind of vacuum interrupter Non-contact vacuum degree on-Line Monitor Device according to claim 1, is characterized in that, described reception antenna transducer (5) adopts planar microstrip sensing antenna.
3. a vacuum interrupter Non-contact vacuum degree on-line monitoring method, is characterized in that, comprise initiatively on-line checkingi with by on-line checkingi,
Initiatively on-line checkingi comprises the following steps: utilize microwave signal to export from swept signal source (1), two paths of signals is become after power divider (2), one tunnel is directly through detector (6) input network analyzer (7), another road radiate through transmitting antenna (3), radiation signal produces reflection in vacuum interrupter to be measured (4), transmission, loss signal inputs network analyzer (7) another passage by detector (6), utilize computer bus technology, real collection when data collection and analysis processing unit (8) carries out the two paths of data on network analyzer (7), again the data collected are amplified, filtering, contrast process, thus indirectly obtain the indoor vacuum condition of vacuum extinction,
Passive on-line checkingi comprises the following steps: directly utilize reception antenna transducer (5) to receive partial discharge in vacuum interrupter to be measured (4), through data collection and analysis processing unit (8), the data collected are amplified again, filtering, contrast process, thus indirectly obtain the indoor vacuum condition of vacuum extinction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510263264.0A CN104882329A (en) | 2015-05-21 | 2015-05-21 | Vacuum interrupter non-contact vacuum degree on-line monitoring device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510263264.0A CN104882329A (en) | 2015-05-21 | 2015-05-21 | Vacuum interrupter non-contact vacuum degree on-line monitoring device and method |
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| CN104882329A true CN104882329A (en) | 2015-09-02 |
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| CN201510263264.0A Pending CN104882329A (en) | 2015-05-21 | 2015-05-21 | Vacuum interrupter non-contact vacuum degree on-line monitoring device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719900A (en) * | 2016-04-01 | 2016-06-29 | 三峡大学 | Microwave vacuum breaker vacuum degree pre-warning device |
| CN109029837A (en) * | 2018-08-08 | 2018-12-18 | 安徽亚辉电气自动化有限公司 | A kind of vacuum monitoring system of vacuum circuit breaker |
| CN113745049A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Vacuum degree monitoring method and system in vacuum arc extinguishing chamber |
-
2015
- 2015-05-21 CN CN201510263264.0A patent/CN104882329A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719900A (en) * | 2016-04-01 | 2016-06-29 | 三峡大学 | Microwave vacuum breaker vacuum degree pre-warning device |
| CN105719900B (en) * | 2016-04-01 | 2017-12-22 | 三峡大学 | A kind of Vacuity of Vacuum Circuit Breakers prior-warning device of microwave |
| CN109029837A (en) * | 2018-08-08 | 2018-12-18 | 安徽亚辉电气自动化有限公司 | A kind of vacuum monitoring system of vacuum circuit breaker |
| CN113745049A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Vacuum degree monitoring method and system in vacuum arc extinguishing chamber |
| CN113745049B (en) * | 2021-08-27 | 2022-07-12 | 西安交通大学 | Vacuum degree monitoring method and system in vacuum arc extinguish chamber |
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Application publication date: 20150902 |
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| WD01 | Invention patent application deemed withdrawn after publication |