CN106814234A - A kind of online 6/10KV voltage detectings sensor of non-intrusion type - Google Patents
A kind of online 6/10KV voltage detectings sensor of non-intrusion type Download PDFInfo
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- CN106814234A CN106814234A CN201710200511.1A CN201710200511A CN106814234A CN 106814234 A CN106814234 A CN 106814234A CN 201710200511 A CN201710200511 A CN 201710200511A CN 106814234 A CN106814234 A CN 106814234A
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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
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- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
A kind of online 6/10KV voltage detectings sensor of non-intrusion type, is related to the voltage measuring apparatus on ultra-high-tension power transmission line, mainly includes cylindrical conductive body, wire, sample resistance.The present invention proposes a kind of Sensor Design based on coupled capacitor, non-intrusive measurement transmission line of electricity voltage can be realized, with the linearity it is good, certainty of measurement is high, low cost and easy for installation, safety coefficient is high, be capable of achieving accurate measurement in real time, the potential safety hazard found in time on transformer and transmission line of electricity, versatility is good the features such as.Disclosed by the invention is widely suitable to transmission line of electricity on-line monitoring, especially voltage on-line monitoring on 6/10KV transmission lines of electricity.
Description
Technical field：
The present invention relates to a kind of detection means of technical field of power systems, and in particular to one kind is used for high voltage power transmission
The ac voltage measurement device of non-intrusion type on circuit.
Background technology：
Safe operation of power system is closely bound up with the life of the people, once power system is broken down, meeting greatly prestige
Whether voltage is normal particularly important in side of body national security and the normal life of the people, therefore safe and effective detection transmission line of electricity.
The important measures that can detection power system at present normally run are exactly had in real time to the voltage on transformer transmission line of electricity
The monitoring of effect., measurement of contact, such voltage mostly fixed for voltage detecting in 6/10KV supply lines
There are many deficiencies in sensor, such as volume is big, inconvenience is installed and it is mobile, certainty of measurement is low, it is online contactless to realize
Measurement.
" the contactless voltage measurement dress of existing non-contact voltage transducer, such as patent No. CN 106030320A
Put " patent, the patent is by the principle of voltage is induced beside high-tension bus-bar to calculate actual voltage.But shortcoming
Also it is obvious：When the measurement apparatus are measured, when it changes with a distance from high-tension bus-bar, accordingly
The voltage for sensing also can be different, thereby result in the measurement that mistake even occurs in error, and uncontrollable factor is too many, in some instances it may even be possible to meeting
Because the reason for measurement aspect causes the failure can not to find in time, greatly threat is caused to the country and people's property safety.
The content of the invention：
In order to overcome the shortcomings of above-mentioned technology, the invention provides a kind of online 6/10KV voltage detectings biography of non-intrusion type
Sensor, this voltage measurement sensor must be fabricated to standard component, can near ultra-high-tension power transmission line or ground measures,
There is measurement convenience, safe operation, the degree of accuracy is high, be easy to movement, low cost, real-time online to detect.
Operation principle of the invention is：Voltage on ultra-high-tension power transmission line is drawn by wire, the wire with it is interior
The cylindrical conductive body that external diameter is fixed constitutes an equivalent coupled capacitor, and the value of such coupled capacitor can just utilize formula meter
Calculate, and then the size of the electric current for flowing through cylinder can be drawn.When electric current flows through sample resistance, by reading the resistance
The voltage of both sides, calibrates the curve map of sampling voltage and virtual voltage, and then voltage by sample resistance extrapolates reality
Voltage swing on transmission line of electricity.
The present invention is achieved by the following technical solutions：The present invention is a kind of online 6/10KV voltages inspection of non-intrusion type
Sensor is surveyed, mainly includes cylindrical conductive body, wire, sample resistance.It is characterized in：
Described electric conductor is cylinder, is made up of outer barrel and inner cylinder, megohmite insulant is filled between inner/outer tube and serves as medium,
The cylinder is set to be equivalent to a coupled capacitor；Described wire, its length is any, but is nested in cylinder in cylindrical conductive body
Conductor length must fix, conductive line surfaces must have insulating barrier, can be loss-free by the voltage on ultra-high-tension power transmission line terminal
It is incorporated into cylindrical conductive body；Described sample resistance must be precision resister, and rated power must be sufficiently large, to the greatest extent may be used
The voltage of sample resistance both sides can accurately be represented, so as to reflect voltage swing on transmission line of electricity, non-intrusive measurement is realized
Voltage on transmission line of electricity.
The present invention is after adopting the above technical scheme, mainly have the following effects：
1st, the present invention is the non-intrusion type voltage measurement sensor that is made of principle based on coupled capacitor, and it is by by high pressure
The method non-intrusion measurement voltage that voltage on transmission line of electricity is drawn with wire, the linearity is good, and certainty of measurement is high, low cost and
It is easy for installation, can anywhere measure.
2nd, safety coefficient is high, is capable of achieving accurate measurement in real time, can in time find the safety on transformer and transmission line of electricity
Hidden danger, versatility is good, for security measurement ultra-high-tension power transmission line will provide thinking from now on.
Brief description of the drawings：
Fig. 1 is structural representation of the invention；
Fig. 2 is the equivalent circuit diagram of Fig. 1；
Fig. 3 is the graph of a relation between sampling voltage and virtual voltage.
Specific embodiment：
It is understandable to become apparent from the features of the present invention, it is cited below particularly go out preferred embodiment, the present embodiment is in the present invention
Carried out under the premise of technical scheme, embodiments of the invention are described in detail below.
As shown in figure 1, the embodiment of the present invention includes：Cylindrical conductive body, wire, sample resistance.Wherein, one end of wire
Ultra-high-tension power transmission line is connect, the high-voltage signal on ultra-high-tension power transmission line is drawn, the other end is incorporated into cylinder, and in cylinder
Internal conductor length is fixed, and eliminates the error influence that lead location does not know to bring.So wire is equivalent to one with cylinder
Individual coupled capacitor, as shown in the equivalent circuits in fig.2, described sample resistance must be precision resister, and rated power is necessary
It is sufficiently large.In the present embodiment, it is the high-precision resistance of 1K Ω to choose resistance, can accurately measure the voltage at its two ends.
Different voltages are added below by wire, the change of the sample resistance both end voltage under different voltage conditions is simulated
Change situation introduces the implementation process of the present embodiment.A sinusoidal voltage of 10KV is added to wire first, the voltage can be with circle
Cylinder it is equivalent into coupled capacitor produce an induced-current, the voltage at the sampled resistance two ends of reading flow.Keep all conditions
It is constant, only change the size of input voltage, sample resistance voltage is recorded, repeatedly measurement, sampling voltage is recorded with virtual voltage
Curve map, calibrates the relational expression of sampling voltage and virtual voltage, as shown in Figure 3.So, when actually input application
Wait, by the voltage for reading sample resistance two ends, it is possible to draw the virtual voltage on ultra-high-tension power transmission line, so as to realize non-invading
Enter to measure the purpose of voltage.
By above-described embodiment and the result for obtaining it can be found that the present embodiment can well summarize tool of the invention
Hold in vivo and advantage, and measure conveniently, safe operation can be widely used in the measurement of ultra-high-tension power transmission line.
Claims (4)
1. a kind of online 6/10KV voltage detectings sensor of non-intrusion type, this voltage detecting sensor includes a cylinder
Electric conductor, wire, sample resistance.It is characterized in that：Cylindrical conductive body and the wire drawn from ultra-high-tension power transmission line terminal
A standard component is constituted, and position is relatively fixed, and eliminates due to the error that position reason is produced.Using electric conductor and electrified wire
Coupled capacitor is internally formed in cylindrical conductive body, the voltage at sample resistance two ends is read by the electric current that induces, using taking
The relation demarcated between sample voltage and virtual voltage represents transmission line of electricity virtual voltage size, realizes that non-intrusive measurement transformer is defeated
Voltage purpose in electric line.
2. the online 6/10KV voltage detectings sensor of a kind of non-intrusion type according to claim 1, it is characterised in that：From
The wire drawn on ultra-high-tension power transmission line, its length is any, but the conductor length for being nested in cylinder in cylindrical conductive body is necessary
Fixed, conductive line surfaces must have insulating barrier, can be incorporated into the voltage on ultra-high-tension power transmission line terminal is loss-free cylinder and lead
In electric body.
3. the online 6/10KV voltage detectings sensor of a kind of non-intrusion type according to claim 1, it is characterised in that：Lead
Electric body is cylinder, is made up of outer barrel and inner cylinder, megohmite insulant is filled between inner/outer tube and serves as medium, is equivalent to the cylinder
One coupled capacitor.
4. the online 6/10KV voltage detectings sensor of a kind of non-intrusion type according to claim 1, it is characterised in that：Take
Sample resistance must be precision resister, and rated power must be sufficiently large, and sample resistance both sides are accurately represented as far as possible
Voltage, so as to reflect virtual voltage size on transmission line of electricity, realizes voltage on non-intrusive measurement transmission line of electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200511.1A CN106814234A (en) | 2017-03-29 | 2017-03-29 | A kind of online 6/10KV voltage detectings sensor of non-intrusion type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200511.1A CN106814234A (en) | 2017-03-29 | 2017-03-29 | A kind of online 6/10KV voltage detectings sensor of non-intrusion type |
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| Publication Number | Publication Date |
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| CN106814234A true CN106814234A (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710200511.1A Pending CN106814234A (en) | 2017-03-29 | 2017-03-29 | A kind of online 6/10KV voltage detectings sensor of non-intrusion type |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156086A (en) * | 1984-02-27 | 1985-10-02 | Gen Electric Plc | Apparatus for use in measuring alternating voltages |
| CN200968968Y (en) * | 2006-08-17 | 2007-10-31 | 国网武汉高压研究院 | Can-type capacitance type potential transformer |
| CN101221196A (en) * | 2007-01-10 | 2008-07-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Voltage-current sensor |
| CN201096820Y (en) * | 2007-11-02 | 2008-08-06 | 桂林电力电容器有限责任公司 | Fully shielding capacitance voltage mutual inductor |
| JP2014119384A (en) * | 2012-12-18 | 2014-06-30 | Nippon Telegr & Teleph Corp <Ntt> | Non-contact voltage measuring probe |
| CN203688626U (en) * | 2013-11-25 | 2014-07-02 | 昆明理工大学 | Fiber Bragg raster voltage sensor based on capacitance partial voltage |
| EP2993480A1 (en) * | 2014-09-04 | 2016-03-09 | 3M Innovative Properties Company | Voltage sensor |
-
2017
- 2017-03-29 CN CN201710200511.1A patent/CN106814234A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156086A (en) * | 1984-02-27 | 1985-10-02 | Gen Electric Plc | Apparatus for use in measuring alternating voltages |
| CN200968968Y (en) * | 2006-08-17 | 2007-10-31 | 国网武汉高压研究院 | Can-type capacitance type potential transformer |
| CN101221196A (en) * | 2007-01-10 | 2008-07-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Voltage-current sensor |
| CN201096820Y (en) * | 2007-11-02 | 2008-08-06 | 桂林电力电容器有限责任公司 | Fully shielding capacitance voltage mutual inductor |
| JP2014119384A (en) * | 2012-12-18 | 2014-06-30 | Nippon Telegr & Teleph Corp <Ntt> | Non-contact voltage measuring probe |
| CN203688626U (en) * | 2013-11-25 | 2014-07-02 | 昆明理工大学 | Fiber Bragg raster voltage sensor based on capacitance partial voltage |
| EP2993480A1 (en) * | 2014-09-04 | 2016-03-09 | 3M Innovative Properties Company | Voltage sensor |
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Application publication date: 20170609 |