CN206756941U - High-voltage alternating circuit three-phase phase-sequence wireless measurement device - Google Patents
High-voltage alternating circuit three-phase phase-sequence wireless measurement device Download PDFInfo
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- CN206756941U CN206756941U CN201720289857.9U CN201720289857U CN206756941U CN 206756941 U CN206756941 U CN 206756941U CN 201720289857 U CN201720289857 U CN 201720289857U CN 206756941 U CN206756941 U CN 206756941U
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Abstract
The utility model provides a kind of high-voltage alternating circuit three-phase phase-sequence wireless measurement device, including three collectors and main frame, three collectors are respectively provided with wireless radio-frequency emission unit and the frequency range of the wireless radio-frequency emission unit of three collectors is different, the main frame has less radio-frequency receiving unit, the collector also has the capacitor induction type sampling unit of sampling voltage of high-voltage line waveform and sinusoidal waveform is converted to the collection converting unit of square wave, the output end of the capacitor induction type sampling unit is connected with the input of the collection converting unit, the output end of the collection converting unit is connected with the wireless radio-frequency emission unit.The utility model uses wireless radio-frequency, it ensure that line security and personal safety, realize to being measured while three-phase high-voltage circuit, as a result it is simple and clear, it can also be coordinated using any two collector and complete nuclear phase work, demand to secondary device can be avoided with direct measurement 10KV~500KV line Phases values.
Description
Technical field
It the utility model is related to the detection of ultra-high-tension power transmission line three-phase phase-sequence, more particularly to a kind of high-voltage alternating circuit three-phase phase
Sequence wireless measurement device.
Background technology
Prior art measures high-tension line phase sequence usually using wireless high-voltage phasing tester.But such a method can only be surveyed every time
Phase relation between 2 circuits of amount, it is impossible to while measure the phase relation of 3 circuits.When being measured to three-phase line, it is necessary to
Taken multiple measurements using wireless high-voltage phasing tester, and need phase difference value of the manual record two-by-two between circuit, Ran Houyou
Artificial judgment circuit is order or backward.And existing wireless high-voltage phasing tester is unable to direct measurement 35KV and above high-voltage line
Road phase sequence.
Also a kind of prior art is to measure phase sequence in the secondary side of ultra-high-tension power transmission line, passes through primary side and secondary side
Corresponding relation judges high-tension line phase sequence.But this mode necessarily requires scene to have a secondary devices such as PT or CT, and primary side with
The corresponding relation of secondary side is it must be appreciated that clearly.If the no related secondary device in scene, can not measure high pressure phase sequence, if
It is once unclear with secondary corresponding relation, then can not be with secondary side judging phase order primary side phase sequence.
Also a kind of prior art is using three-phase phase volt ampere meter measurement 380V circuit three-phase phase differences, shows three-phase
Phase sequence.But this mode direct measurement and can only show the three-phase phase difference within 750V.
Also there is a kind of high pressure phase sequence wired measuring device in prior art, but it is only applicable to the measurement of 10KV high pressures phase sequence,
And shown without phase difference value, only order and backward indicator lamp are shown.Such a technology is due to needing high-voltage line by leading
Line links together, all higher to equipment and the insulating requirements of p-wire, may cause phase fault, or high-voltage line ground connection
Short circuit, or cause personal injury accidents.
Also be present a kind of wired phase detection techniques in prior art, but phase can only close between more identical voltage circuit
System, it is impossible to the phase relation between more different voltage class circuits.If a power transformer, which is 35KV, becomes 10KV, no
The group relation of 35KV buses and 10KV buses can be judged.
It is therefore desirable to design a kind of new ultra-high-tension power transmission line three-phase phase-sequence detection means, to solve the above problems.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage alternating circuit three-phase phase-sequence wireless measurement device, it is intended to is used for
The phase relation of three-line can not be measured simultaneously, be unable to direct measurement by solving existing high-tension line three-phase phase-sequence detection technique
35KV and above high-tension line phase sequence and to field apparatus require it is high the problem of.
What the utility model was realized in：
The utility model provides a kind of high-voltage alternating circuit three-phase phase-sequence wireless measurement device, it is characterised in that：Including master
Machine and three collectors, three collectors are respectively provided with the less radio-frequency of wireless radio-frequency emission unit and three collectors
The frequency range of transmitter unit is different, and the main frame has less radio-frequency receiving unit, and the collector also has sampling high pressure
The capacitor induction type sampling unit of line voltage waveform and the collection converting unit that sinusoidal waveform is converted to square wave, the electricity
The output end for holding induction type sampling unit is connected with the input of the collection converting unit, the output of the collection converting unit
End is connected with the wireless radio-frequency emission unit.
Further, capacitor induction type sampling unit includes being arranged on the double-layer circuit board at the top of the collector, described
Double-layer circuit board up and down two layers be copper foil conductor, centre is epoxy substrate.
Further, the collection converting unit includes first resistor, inductance, the first voltage-regulator diode, the second voltage stabilizing two
Pole pipe, second resistance, 3rd resistor, the 4th resistance, triode, the 5th resistance and the 6th resistance, one end of first resistor are
Signal input part, the other end connect one end of inductance, and the other end of inductance connects the negative electrode of the first voltage-regulator diode, second respectively
One end of resistance, one end of the 4th resistance, the plus earth of the first voltage-regulator diode, second resistance are connected with 3rd resistor and are followed by
Ground, the other end of the 4th resistance connect the negative electrode of the second voltage-regulator diode and the base stage of triode, the second voltage-regulator diode
Plus earth, the colelctor electrode of triode are connected with power supply, and the emitter stage of triode connects one end of the 5th resistance, the 5th resistance with
It is grounded after 6th resistant series.
Further, the collection converting unit also includes CD40106 Schmidt trigger chips, the emitter stage of triode
It is also connected with the input pin of CD40106 Schmidt trigger chips.
Further, the main frame has display screen.
The utility model has the advantages that：
（1）Connected between collector and main frame using wireless radio frequency mode signal, the connection for eliminating wired phase-sequence meter is led
Line, line security and personal safety are ensure that, without setting up lead, simplify the job step of measurement phase sequence, make measurement work
Become simple efficient；
（2）Three collectors use the radiofrequency signal of different frequency range, while realizing to three-phase high-voltage circuit measurement and
Data transfer, once-through operation can complete phase sequence measurement work, as a result simple and clear, without manual record and calculating, avoid
Artificial error probability；
（3）The device can measure phase sequence using three collectors, can coordinate completion core using any two collector
Mutually work, dual-use, saved user's purchase cost；And when one of collector breaks down, still can be with complete
Worked into grid-connected nuclear phase, improve the reliability of nuclear phase work；
（4）Collector changes list using capacitor induction type sampling unit sampling voltage of high-voltage line waveform by gathering
Sinusoidal waveform is converted to square wave by member, by this ac high-voltage line Phases Sampling techniques, can with direct measurement 10KV~
500KV line Phases values, the method in secondary side measurement phase sequence is contrasted, the demand to secondary device is avoided, avoids simultaneously
Because secondary side and primary side line matching it is inconsistent and caused by phase sequence measuring error the problem of.
Brief description of the drawings
Fig. 1 is a kind of structure for high-voltage alternating circuit three-phase phase-sequence wireless measurement device that the utility model embodiment provides
Schematic diagram；
Fig. 2 is the schematic diagram for the collection converting unit that the utility model embodiment provides；
Fig. 3 is the schematic diagram of the measurement device three-phase phase-sequence provided using the utility model embodiment；
Fig. 4 is that the device provided using the utility model embodiment checks the other schematic diagram of phase-group.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment provides a kind of high-voltage alternating circuit three-phase phase-sequence wireless measurement device, bag
Three phase acquisition device X, Y, Z and main frame 1 are included, three described collector X, Y, Z are respectively provided with wireless radio-frequency emission unit, and three
The frequency range of the radiofrequency signal of individual described collector X, Y, Z wireless radio-frequency emission unit is different, and the main frame 1 has wireless
Rf receiver unit, so as to be connected between three described collector X, Y, Z and the main frame 1 by wireless radio-frequency signal
Connect, three described collector X, Y, Z are used to gather the phase value and frequency of three-phase line simultaneously, and the data of collection are sent to
The main frame 1, the main frame 1 is used to calculate the phase difference value between three-phase line, and judges the phase sequence of three-phase line, wherein,
Three described collector X, Y, Z and the main frame 1 function are all by circuit realiration.
Three described collector X, Y, Z be respectively provided with sampling voltage of high-voltage line waveform capacitor induction type sampling unit and
Sinusoidal waveform is converted to the collection converting unit of square wave, the output end of the capacitor induction type sampling unit turns with the collection
The input connection of unit is changed, the output end of the collection converting unit is connected with the wireless radio-frequency emission unit.Pass through electricity
Hold induction type sampling unit sampling voltage of high-voltage line waveform, then by gathering converting unit by the sinusoidal waveform side of being converted to
Ripple, and ensure the dutycycle of square wave in the range of 50%~49%., can be with by this ac high-voltage line Phases Sampling techniques
Direct measurement 10KV~500KV line Phases values, therefore it is poor to can be used for measurement 10KV~500KV voltage ad eundem line Phases
Value, judges three-phase phase-sequence, can also measure the phase difference value of different voltage class, judge high-low pressure phase group.
The capacitor induction type sampling unit includes being arranged on the double-layer circuit board at the top of the collector, the double-layer electric
There is no any element above the plate of road, the double-layer circuit board up and down two layers be copper foil conductor, centre is epoxy substrate as being situated between
Matter, so as to form electric capacity, when collector contacts with high-tension line, electric capacity can sense faint electricity, so as to sample height
Line ball road voltage waveform signal.
As shown in Fig. 2 the collection converting unit includes first resistor R10, inductance L1, the first voltage-regulator diode Z3, the
Two voltage-regulator diode Z4, second resistance R11,3rd resistor R12, the 4th resistance R13, triode Q2, the 5th resistance R14, the 6th
Resistance R15 and CD40106 Schmidt trigger chip, first resistor R10 one end is signal input part, and the other end connects
Inductance L1 one end, the inductance L1 other end connect respectively the first voltage-regulator diode Z3 negative electrode, second resistance R11 one end,
4th resistance R13 one end, the first voltage-regulator diode Z3 plus earth, second resistance R11 connect with 3rd resistor R12 and are followed by
Ground, the 4th resistance R13 other end connect the second voltage-regulator diode Z4 negative electrode and triode Q2 base stage, the second voltage stabilizing two
Pole pipe Z4 plus earth, triode Q2 colelctor electrode are connected with power supply, triode Q2 emitter stage connection CD40106 Schmidts
One end of the input pin of trigger chip and the 5th resistance R14, the 5th resistance R14 are grounded after being connected with the 6th resistance R15.
The principle of the collection converting unit is：The voltage of high-voltage line waveform signal of capacitor induction type sampling unit sampling is by the first electricity
Hinder R10 current limlitings, inductance L1 filter high frequencies, the first voltage-regulator diode Z3 and the second voltage-regulator diode Z4 voltage stabilizings, second resistance R11 and the
Three resistance R12 series connection partial pressures, are converted to square wave, then pass through CD40106 Schmidt trigger cores by triode Q2 by sine wave
Piece filters out high frequency, improves load capacity, then the square-wave signal of processing is passed to the wireless radio-frequency emission unit of collector.
The frequency range of the radiofrequency signal of three described collector X, Y, Z wireless radio-frequency emission unit must have larger difference,
Otherwise the radiofrequency signal launched can interfere, and radio frequency reception part will be difficult to parse useful signal, so as to calculate phase
Potential difference value.The frequency range of three described collector X, Y, Z wireless radio-frequency emission unit is respectively the wireless frequencies of 315M in the present embodiment
Section, 390M radio bands and 433M radio bands, three radio bands will not produce interference in close-in measurement, meet measurement
High pressure phase sequence actual operation requirements.
Further, the wireless radio-frequency emission unit and the less radio-frequency receiving unit block use carries without coding
Ripple, phase data scramble time and receiving portion decoding time are eliminated, accomplishes real time emission and decoding, launches and prolongs with what is decoded
When be less than 1 microsecond, ensure that phase measurement accuracy.Less radio-frequency receiving unit needs to receive 3 tunnel transmission signals simultaneously, uses list
3 tunnels of piece machine are interrupted, and only can just shorten interruption duration without coded data, will not be preferential because of interrupting between 3 circuit-switched datas of guarantee
The level problem stand-by period is long and influences the phase difference value calculated.
The main frame 1 also has a display screen 2, the display screen 2 be used for the phase difference value of real-time display Framework computing with
And phase sequence.
As shown in figure 3, to measure three-phase using high-voltage alternating circuit three-phase phase-sequence wireless measurement device of the present utility model
The schematic diagram of phase sequence, three described collector X, Y, Z are connected with A, B, C three-phase line respectively, while gather A, B, C three-phase line
Phase value and frequency, and the data of collection are sent to the main frame 1, the main frame 1 is calculated between A, B, C three-phase line
Phase difference value, and judge the phase sequence of A, B, C three-phase line, then result is shown on the display screen 2.
High-voltage alternating circuit three-phase phase-sequence wireless measurement device of the present utility model can be also used for checking phase group, profit
With the phase difference value of any two collector in the device, it can be determined that the whether same phase of two circuits.When phase difference value is 0 ° of left side
It is same phase when right, is out-phase at 120 ° or 240 ° or so.Any two collector and main frame in three collectors X, Y, Z are taken
Match somebody with somebody, nuclear phase function can be realized.And when single collector failure, it still can complete nuclear phase work.As shown in figure 4,
To check the other schematic diagram of phase-group using the device, the schematic diagram is only exemplary, by collector X and primary side A phases
Connection, the A ' phase lines of collector Y and secondary side are connected, the data of collection are sent to institute by collector X and collector Y
State main frame 1, the main frame 1 calculates A, A ' phase difference value between phase line, result of calculation is 0 °, and result included showing
, can be taking human as judging A, A by the result of calculation on screen 2 ' phase line is same phase.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
- A kind of 1. high-voltage alternating circuit three-phase phase-sequence wireless measurement device, it is characterised in that：Including main frame and three collectors, three The individual collector is respectively provided with wireless radio-frequency emission unit and the frequency range of the wireless radio-frequency emission unit of three collectors is each Differ, the main frame has less radio-frequency receiving unit, and the collector also has the electricity of sampling voltage of high-voltage line waveform Hold induction type sampling unit and sinusoidal waveform is converted to the collection converting unit of square wave, the capacitor induction type sampling unit Output end with it is described collection converting unit input be connected, it is described collection converting unit output end and the less radio-frequency Transmitter unit connects.
- 2. high-voltage alternating circuit three-phase phase-sequence wireless measurement device as claimed in claim 1, it is characterised in that：Capacitor induction type Sampling unit includes being arranged on double-layer circuit board at the top of the collector, and the double-layer circuit board is led for two layers for copper foil up and down Body, centre is epoxy substrate.
- 3. high-voltage alternating circuit three-phase phase-sequence wireless measurement device as claimed in claim 1, it is characterised in that：The collection turns Changing unit includes first resistor, inductance, the first voltage-regulator diode, the second voltage-regulator diode, second resistance, 3rd resistor, the 4th Resistance, triode, the 5th resistance and the 6th resistance, one end of first resistor is signal input part, other end connection inductance One end, the other end of inductance connect the negative electrode of the first voltage-regulator diode, one end of second resistance, one end of the 4th resistance respectively, The plus earth of first voltage-regulator diode, second resistance are grounded after being connected with 3rd resistor, the other end of the 4th resistance connection the The negative electrode of two voltage-regulator diodes and the base stage of triode, the plus earth of the second voltage-regulator diode, the colelctor electrode of triode with Power supply connects, and the emitter stage of triode connects one end of the 5th resistance, and the 5th resistance after the 6th resistant series with being grounded.
- 4. high-voltage alternating circuit three-phase phase-sequence wireless measurement device as claimed in claim 3, it is characterised in that：The collection turns Changing unit also includes CD40106 Schmidt trigger chips, and the emitter stage of triode is also connected with CD40106 Schmidt trigger cores The input pin of piece.
- 5. high-voltage alternating circuit three-phase phase-sequence wireless measurement device as claimed in claim 1, it is characterised in that：The main frame tool There is display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720289857.9U CN206756941U (en) | 2017-03-23 | 2017-03-23 | High-voltage alternating circuit three-phase phase-sequence wireless measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720289857.9U CN206756941U (en) | 2017-03-23 | 2017-03-23 | High-voltage alternating circuit three-phase phase-sequence wireless measurement device |
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| CN206756941U true CN206756941U (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907711A (en) * | 2019-11-20 | 2020-03-24 | 武汉鸿志高测电气技术有限公司 | Nuclear phase and phasing device and method |
-
2017
- 2017-03-23 CN CN201720289857.9U patent/CN206756941U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907711A (en) * | 2019-11-20 | 2020-03-24 | 武汉鸿志高测电气技术有限公司 | Nuclear phase and phasing device and method |
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