CN204462259U - Networking three-phase circuit detection device for phase sequence - Google Patents
Networking three-phase circuit detection device for phase sequence Download PDFInfo
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- CN204462259U CN204462259U CN201520016496.1U CN201520016496U CN204462259U CN 204462259 U CN204462259 U CN 204462259U CN 201520016496 U CN201520016496 U CN 201520016496U CN 204462259 U CN204462259 U CN 204462259U
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- circuit
- phase
- radio communication
- core controller
- signal conditioning
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Abstract
The utility model relates to a kind of networking three-phase circuit detection device for phase sequence, comprise monitoring station, it comprises core controller, radio communication device, warning circuit, relay circuit, monitoring station, signal conditioning circuit, feed circuit, described monitoring station comprises handheld communication devices, described signal conditioning circuit is connected with core controller, core controller respectively with radio communication device, warning circuit, relay circuit connects, described radio communication device is connected with handheld communication devices radio communication, described feed circuit provide electric energy for foregoing circuit, described signal conditioning circuit input end connects the A of three-phase circuit, B, C end line.The utility model can be real-time, accurately, detects three-phase circuit rapidly, and circulate a notice of operator in time to fix a breakdown as early as possible; In addition, adopt handheld communication devices to replace traditional operator's console can Optimum Operation interface, simplify the operation course.
Description
Technical field
The utility model relates to the Phase sequence detection of three-phase circuit, is specifically related to a kind of networking three-phase circuit detection device for phase sequence, is a kind of phase sequence for detecting three-phase circuit and by testing result by returning to monitoring station.
Background technology
In order to energy acquisition pattern convenience and obtain larger power, in a lot of power-equipment, often adopt threephase motor as the power source of equipment.But turning to of threephase motor has substantial connection with the phase place connection of three-phase supply.When motor generation phase sequence connects anti-situation, motor can reverse, and then causes the load-carrying damage of motor.
Usually need installation detection device for phase sequence to solve motor phase sequence at present and connect the problem instead brought, its principle is by detecting phase sequence mistake, forbid motor contactor closed in time and motor cannot be worked, and alert phase sequence mistake, thus motor is avoided to reverse.
In 380V electrical network, adopt the application of the phase sequence relay of capacitance-resistance phase-shift theory comparatively extensive, its principle detecting phase sequence mistake builds capacitance-resistance phase shift network, by the phase shift superposing respectively of one group of voltage to be measured, when phase sequence connects correct, superimposed voltage phase differential is less than 180 degree, and output voltage is enhanced; When phase sequence connects inverse time, the contrary output voltage of superimposed voltage phase place is approximately zero.Although such phase sequence device structure is simple, degree is not high automatically, is easily disturbed.
Some document utilization Single Chip Microcomputer (SCM) system have solved the problems referred to above, the phase voltage signal of three-phase circuit is by filtering, and shaping, converts square-wave signal to and give single-chip microcomputer after isolation, the order of the appearance on the upper jumping edge of microprocessor detect three square-wave signals or time, and judge whether to occur phase shortage or anti-phase; Local warning device is then utilized to report to the police if there is fault.And in actual applications, upper jumping is easily lost along signal, carry out detection with three upper jumpings along signal and considerably increase rate of false alarm; And pick-up unit and detected object share a power supply and also reduce the accurate of pick-up unit.Alarm module is arranged on system this locality and reports to the police in addition, and operator can not be fixed a breakdown by Timeliness coverage, and especially when monitoring point is more, investigation difficulty is larger.
Utility model content
Technical problem to be solved in the utility model is: the shortcoming overcoming prior art, there is provided a kind of networking three-phase circuit detection device for phase sequence, this covering device can be real-time, accurately, detect three-phase circuit rapidly, and circulate a notice of operator in time to fix a breakdown as early as possible; In addition, adopt handheld communication devices to replace traditional operator's console can Optimum Operation interface, simplify the operation course.
The scheme of the utility model technical solution problem is:
A kind of networking three-phase circuit detection device for phase sequence, comprise monitoring station, it comprises core controller, radio communication device, warning circuit, relay circuit, monitoring station, signal conditioning circuit, feed circuit, described monitoring station comprises handheld communication devices, described signal conditioning circuit is connected with core controller, core controller respectively with radio communication device, warning circuit, relay circuit connects, described radio communication device is connected with handheld communication devices radio communication, described feed circuit provide electric energy for foregoing circuit, described signal conditioning circuit input end connects the A of three-phase circuit, B, C end line, the electric signal of described three-phase circuit, after feeding signal conditioning circuit carries out filter shape, send into core controller again to process, as noted abnormalities, then core controller carries out this locality warning and sends alerting signal to handheld communication devices by radio communication device, and by relay isolated fault point.
Wherein, described signal conditioning circuit comprises filtering shaping circuit, buffer circuit, and filtering shaping circuit is connected with buffer circuit.
Wherein, described handheld communication devices comprises smart mobile phone, PDA or panel computer.
Wherein, described core controller is CPLD or FPGA.
Wherein, described radio communication device is WIFI, bluetooth or 4G radio communication device.
Wherein, described feed circuit comprise solar cell, energy storage device, DC-DC circuit, and described solar cell is connected with energy storage device, and energy storage device is connected with DC-DC circuit.
A kind of three-phase circuit phase sequence detecting method, has following steps:
A, three-phase circuit detection device for phase sequence have three groups, the input end of three groups joins end to end and forms dihedral load, A, B, C end line of three-phase circuit accesses the A of dihedral load respectively, B, C end line, thus measure the line voltage of three-phase electricity, the sinusoidal signal of line voltage becomes square-wave signal through signal conditioning circuit, line voltage U corresponding respectively
aB, U
bC, U
cA, when positive sequence, U
aBfor upper jumping along time, U
bCbe zero, U
cAfor high level, U
bCfor upper jumping along time, U
cAbe zero, U
aBfor high level, U
cAfor upper jumping along time, U
aBbe zero, U
bCfor low level, if when level order is not said sequence, be then backward;
B, when occurring independent U
aBor U
bCor U
cAtime, be then phase shortage.
The beneficial effects of the utility model are:
The utility model adopts upper jumping to be combined along signal the phase sequence detecting three-phase circuit with level signal, decreases rate of false alarm; Have employed the independent power supply mode of solar cell, the interference that the system of decreasing is subject to, improve the stability of system; Have employed the handheld communication devices platform such as radio communication and smart mobile phone, PDA or panel computer, substantially increase the efficiency that operator fixes a breakdown, also make device easy for installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model feed circuit;
Fig. 2 is the block diagram of utility model works principle;
Fig. 3 is the circuit theory diagrams of the utility model signal conditioning circuit;
In figure: 10 feed circuit, 101 solar cells, 102 energy storage devices, 103 bi-directional DC-DCs, 20 three-phase circuit detection device for phase sequences, 201 core controllers, 202 radio communication devices, 203 warning circuits, 204 relay circuits, 30 monitoring stations, 40 signal conditioning circuits; 401 filtering shaping circuits, 402 buffer circuits; R1 ~ R12 resistance; U1, U2, U3 photo-coupler; JP1 connection terminal; Three end lines of A, B, C three-phase circuit; U
aB, U
bC, U
cAthree line voltages of three-phase circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1-3,
A kind of networking three-phase circuit detection device for phase sequence of the present utility model, comprise monitoring station, it comprises core controller, radio communication device, warning circuit, relay circuit, monitoring station, signal conditioning circuit, feed circuit, described monitoring station comprises handheld communication devices, described signal conditioning circuit is connected with core controller, core controller respectively with radio communication device, warning circuit, relay circuit connects, described radio communication device is connected with handheld communication devices radio communication, described feed circuit provide electric energy for foregoing circuit, described signal conditioning circuit input end connects the A of three-phase circuit, B, C end line, the electric signal of described three-phase circuit, after feeding signal conditioning circuit carries out filter shape, send into core controller again to process, as noted abnormalities, then core controller carries out this locality warning and sends alerting signal to handheld communication devices by radio communication device, and by relay isolated fault point.
Described signal conditioning circuit comprises filtering shaping circuit, buffer circuit, and filtering shaping circuit is connected with buffer circuit.
Described handheld communication devices comprises smart mobile phone, PDA or panel computer.
Described core controller is CPLD or FPGA.
Described radio communication device is WIFI, bluetooth or 4G radio communication device.
Described feed circuit comprise solar cell, energy storage device, DC-DC circuit, and described solar cell is connected with energy storage device, and energy storage device is connected with DC-DC circuit.
A kind of three-phase circuit phase sequence detecting method of the present utility model, has following steps:
A, three-phase circuit detection device for phase sequence have three groups, the input end of three groups joins end to end and forms dihedral load, A, B, C end line of three-phase circuit accesses the A of dihedral load respectively, B, C end line, thus measure the line voltage of three-phase electricity, the sinusoidal signal of line voltage becomes square-wave signal through signal conditioning circuit, line voltage U corresponding respectively
aB, U
bC, U
cA, when positive sequence, U
aBfor upper jumping along time, U
bCbe zero, U
cAfor high level, U
bCfor upper jumping along time, U
cAbe zero, U
aBfor high level, U
cAfor upper jumping along time, U
aBbe zero, U
bCfor low level, if when level order is not said sequence, be then backward;
B, when occurring independent U
aBor U
bCor U
cAtime, be then phase shortage.
Networking three-phase circuit detection device for phase sequence of the present utility model comprises supply module 10, three-phase circuit detection device for phase sequence 20 and monitoring station 30, described feed circuit 10 comprise solar cell 101, energy storage device 102 and bi-directional DC-DC 103, bi-directional DC-DC controls the switching of energy storage device charging and discharging state on the one hand, ensure that feed circuit 10 export electric energy to three-phase circuit detection device for phase sequence 20 on the other hand, in the present embodiment, solar cell 101 adopts the single crystal silicon battery plate of 70W, energy storage device 102 adopts the accumulator of 12V 6Ah, bi-directional DC-DC 103 adopts the DC-DC circuit of 12V-5V, described monitoring station 30 is millet 3 smart mobile phones, described three-phase circuit detection device for phase sequence 20 comprises signal conditioning circuit 40, core controller 201, radio communication device 202, warning circuit 203 and relay circuit 204, the A of three-phase circuit, B, C end line is connected directly between on three input ends of signal conditioning circuit 40, signal conditioning circuit 40 adopts the line voltage of three-phase electricity, again after filtering, shaping and isolation become three square-wave signals, and give core controller 201 by signal, core controller 201 judges whether according to the order of signal the phase sequence that breaks down, concrete grammar is: a) three-phase circuit detection device for phase sequence has three groups, the input end of three groups joins end to end and forms dihedral load, the A of three-phase circuit, B, C end line accesses the A of dihedral load respectively, B, C end line, thus measure the line voltage of three-phase electricity, the sinusoidal signal of line voltage becomes square-wave signal through shaping circuit and buffer circuit, line voltage U corresponding respectively
aB, U
bC, U
cA, when positive sequence, U
aBfor upper jumping along time, U
bCbe zero, U
cAfor high level, U
bCfor upper jumping along time, U
cAbe zero, U
aBfor high level, U
cAfor upper jumping along time, U
aBbe zero, U
bCfor low level, if when level order is not said sequence, be then backward, b) when occurring independent U
aBor U
bCor U
cAtime, it is then phase shortage, when break down phase sequence time, core controller 201 first utilizes relay circuit 204 isolated fault point, then by warning circuit 203 carry out this locality report to the police, and by wireless communication module 202, alerting signal is passed to monitoring station, in the present embodiment, the FPGA minimum system that core controller 201 selects market now to sell, DS2Y-S-DC12V selected by relay circuit 204, the hummer that warning circuit 203 selects market now to sell, radio communication device 202 selects blue-tooth device HC-06.
Described signal conditioning circuit 40 is with reference to Fig. 2, three filtering shaping circuits of filter shape module 401, adopt Angle connection, gather the line voltage signal of three-phase circuit, and converting square-wave signal to, square-wave signal enters core controller 201 through three buffer circuits of buffer circuit 402.
Although disclosed the utility model by above embodiment; but protection domain of the present utility model is not limited thereto; under the condition not departing from the utility model design, all will fall in right of the present utility model the distortion, replacement etc. that above each component does.
Claims (6)
1. a networking three-phase circuit detection device for phase sequence, comprise monitoring station, it is characterized in that: it comprises core controller, radio communication device, warning circuit, relay circuit, monitoring station, signal conditioning circuit, feed circuit, described monitoring station comprises handheld communication devices, described signal conditioning circuit is connected with core controller, core controller respectively with radio communication device, warning circuit, relay circuit connects, described radio communication device is connected with handheld communication devices radio communication, described feed circuit provide electric energy for foregoing circuit, described signal conditioning circuit input end connects the A of three-phase circuit, B, C end line, the electric signal of described three-phase circuit, after feeding signal conditioning circuit carries out filter shape, send into core controller again to process, as noted abnormalities, then core controller carries out this locality warning and sends alerting signal to handheld communication devices by radio communication device, and by relay isolated fault point.
2. three-phase circuit detection device for phase sequence as claimed in claim 1, is characterized in that: described signal conditioning circuit comprises filtering shaping circuit, buffer circuit, and filtering shaping circuit is connected with buffer circuit.
3. three-phase circuit detection device for phase sequence as claimed in claim 1, is characterized in that: described handheld communication devices comprises smart mobile phone, PDA or panel computer.
4. three-phase circuit detection device for phase sequence as claimed in claim 1, is characterized in that: described core controller is CPLD or FPGA.
5. three-phase circuit detection device for phase sequence as claimed in claim 1, is characterized in that: described radio communication device is WIFI, bluetooth or 4G radio communication device.
6. three-phase circuit detection device for phase sequence as claimed in claim 1, it is characterized in that: described feed circuit comprise solar cell, energy storage device, DC-DC circuit, described solar cell is connected with energy storage device, and energy storage device is connected with DC-DC circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016496.1U CN204462259U (en) | 2015-01-08 | 2015-01-08 | Networking three-phase circuit detection device for phase sequence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016496.1U CN204462259U (en) | 2015-01-08 | 2015-01-08 | Networking three-phase circuit detection device for phase sequence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204462259U true CN204462259U (en) | 2015-07-08 |
Family
ID=53669128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520016496.1U Expired - Fee Related CN204462259U (en) | 2015-01-08 | 2015-01-08 | Networking three-phase circuit detection device for phase sequence |
Country Status (1)
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597332A (en) * | 2015-01-08 | 2015-05-06 | 北华大学 | Networked three-phase circuit phase sequence detection device and detection method thereof |
| CN109507491A (en) * | 2018-10-19 | 2019-03-22 | 陕西航空电气有限责任公司 | Three-phase inverter voltage phase sequence detection circuit, device and method |
-
2015
- 2015-01-08 CN CN201520016496.1U patent/CN204462259U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597332A (en) * | 2015-01-08 | 2015-05-06 | 北华大学 | Networked three-phase circuit phase sequence detection device and detection method thereof |
| CN109507491A (en) * | 2018-10-19 | 2019-03-22 | 陕西航空电气有限责任公司 | Three-phase inverter voltage phase sequence detection circuit, device and method |
| CN109507491B (en) * | 2018-10-19 | 2021-12-28 | 陕西航空电气有限责任公司 | Three-phase inverter voltage phase sequence detection circuit, device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160108 |