A kind of three phase mains electric power monitoring methodTechnical field
The present invention relates to electric power monitoring technical field, specially a kind of three phase mains electric power monitoring method.
Background technology
Power equipment has a wide range of applications in the every field of today's society, right in order to ensure the safety with electric lineIt is extremely important that electric power monitoring is carried out with electric line or also grid nodes.
Three-phase electricity is one group, and amplitude is equal, frequency is equal, phase mutually differs 120 ° of three-phase alternating current, by there is three windingsThreephase generator produce, be industrially conventional power supply；Three phase mains has a wide range of applications in industrial power supply, industrialElectric safety is extremely important, thus be sought after one kind can be full-featured, the monitoring method of efficiency high.Three phase mains is supervised in the prior artSurvey method monitoring efficiency is low, precision is low, poor real, causes overhaul efficiency low.
The content of the invention
It is an object of the invention to provide a kind of three phase mains electric power monitoring method, to solve to propose in above-mentioned background technologyThe problem of.
To achieve the above object, the present invention provides following technical scheme：A kind of three phase mains electric power monitoring method, including withLower step：
A, current transformer, voltage transformer, temperature sensor and tracer be respectively connected to three-phase power circuitIn；
B, current transformer, voltage transformer, temperature sensor gather corresponding electric current, voltage and temperature signal in real time,And sent by acquisition module to central processing unit processing；
If C, circuit break down, tracer gathers in three-phase power circuit fault-signal and positions failure in real timePosition, fault-signal and abort situation are sent to central processing unit；
D, central processing unit transmit the signal that each sensor and tracer are gathered after processor by signalModule is sent to cloud database and remote monitoring center in real time；
E, staff are analyzed and judged according to electric power acquisition data, correction data and fault data, are safeguarded in timeAnd maintenance, it is ensured that normal operation.
It is preferred that, acquisition module includes triode A, triode B in the step B, and triode A base stages connect voltage stabilizing respectivelyDiode A negative poles, resistance D one end, resistance C one end, resistance B one end, triode A emitter stages connection resistance E one end, resistance E are anotherOne end connects voltage-regulator diode A positive poles, the resistance D other ends, the resistance C other ends, resistance A one end and current transformer one respectivelyHold and be grounded, the current transformer other end connects the resistance A other ends and the resistance B other ends respectively, triode A colelctor electrodes connect respectivelyTriode B colelctor electrodes, resistance J one end, triode C colelctor electrodes are connect, triode C emitter stages connection power end, triode C base stages are led toResistance K connection central processing unit control ends are crossed, triode B base stages connect voltage-regulator diode B negative poles, resistance F one end, resistance respectivelyG one end, resistance G other ends connection voltage transformer, triode B emitter stages connection resistance H one end, the resistance H other ends connect respectivelyConnect voltage-regulator diode B positive poles, the resistance F other ends and be grounded, the resistance J other ends connect respectively resistance I one end, temperature sensor withAnd central processing unit control end, resistance I other ends ground connection.
It is preferred that, tracer includes failure location unit, fault-signal Transmit-Receive Unit and multiple in the step AFault detector, the multiple fault detector includes Fisrt fault indicator, the second fault detector, the 3rd indicating faultDevice, N fault detectors, N are the integer more than 3, and the Fisrt fault indicator, the second fault detector, the 3rd failure refer toShow device, N fault detector connecting fault signal transmitting and receiving units, the fault-signal Transmit-Receive Unit is connected by failure location unitConnect central processing unit.
It is preferred that, transport module is transmitted using RS485 modules or ethernet module in the step D.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) operation principle of the present invention is simple, intelligence degree is high, and monitoring efficiency and precision are high；The acquisition module of use resistsInterference performance is strong, it is possible to increase the real-time and accuracy of electric power data acquisition, further improves three phase mains electric power monitoring effectRate.
(2) tracer that uses of the present invention can be accurately positioned and be indicated to failure, be easy to staff andWhen overhaul, it is ensured that power network is normally run.
(3) present invention is high using transport module efficiency of transmission, improves the promptness of monitoring.
Brief description of the drawings
Fig. 1 is workflow diagram of the present invention；
Fig. 2 is operation principle block diagram of the present invention；
Fig. 3 is acquisition module schematic diagram of the present invention；
Fig. 4 is tracer schematic diagram of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, completeSite preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based onEmbodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not madeEmbodiment, belongs to the scope of protection of the invention.
Fig. 1-4 are referred to, the present invention provides a kind of technical scheme：A kind of three phase mains electric power monitoring method, including it is followingStep：
A, current transformer 1, voltage transformer 2, temperature sensor 3 and tracer 4 be respectively connected to three phase mainsIn circuit；
B, current transformer 1, voltage transformer 2, temperature sensor 3 gather corresponding electric current, voltage and temperature letter in real timeNumber, and sent to central processing unit 6 and handle by acquisition module 5；
If C, circuit break down, tracer 4 in real time collection three-phase power circuit in fault-signal and position thereforeHinder position, fault-signal and abort situation are sent to central processing unit 6；
The signal that D, central processing unit 6 gather each sensor and tracer 4 is passed after processor by signalDefeated module 7 is sent to cloud database 8 and remote monitoring center 9 in real time；
E, staff are analyzed and judged according to electric power acquisition data, correction data and fault data, are safeguarded in timeAnd maintenance, it is ensured that normal operation.
In the present invention, acquisition module 5 includes triode A 1c, triode B 2c, triode A 1c base stages difference in step BConnect voltage-regulator diode A 1b negative poles, resistance D 4a one end, resistance C 3a one end, resistance B 2a one end, triode A 1c transmittingsPole connection resistance E 5a one end, the resistance E 5a other ends connect voltage-regulator diode A 1b positive poles, the resistance D 4a other ends, electricity respectivelyThe resistance C 3a other ends, resistance A1a one end and the one end of current transformer 1 are simultaneously grounded, and the other end of current transformer 1 connects electricity respectivelyHinder the A1a other ends and the resistance B 2a other ends, triode A 1c colelctor electrodes difference connecting triode B 2c colelctor electrodes, resistance J10a one end, triode C 3c colelctor electrodes, triode C 3c emitter stages connection power end, triode C 3c base stages pass through resistance KThe control end of 11a connections central processing unit 6, triode B 2c base stages connect voltage-regulator diode B 2b negative poles, resistance F 6a mono- respectivelyEnd, resistance G 7a one end, resistance G7a other ends connection voltage transformer 2, triode B2c emitter stages connection resistance H8a one end,The resistance H 8a other ends connect voltage-regulator diode B 2b positive poles, the resistance F 6a other ends and are grounded respectively, the resistance J 10a other endsResistance I 9a one end, temperature sensor 3 and the control end of central processing unit 6, resistance I 9a other ends ground connection are connected respectively.
Operation principle of the present invention is simple, intelligence degree is high, and monitoring efficiency and precision are high；The acquisition module of use is anti-interferenceAbility is strong, it is possible to increase the real-time and accuracy of electric power data acquisition, further improves three phase mains electric power monitoring efficiency.
In the present invention, in step A tracer 4 include failure location unit 10, fault-signal Transmit-Receive Unit 11 andMultiple fault detectors, the multiple fault detector includes Fisrt fault indicator 12, the event of the second fault detector the 13, the 3rdHinder indicator 14, N fault detectors, N is the integer more than 3, the Fisrt fault indicator 12, the second fault detector13rd, the 3rd fault detector 14, N fault detector connecting fault signal transmitting and receivings unit 11, the fault-signal Transmit-Receive Unit11 connect central processing unit 6 by failure location unit 10.The tracer that the present invention is used can carry out accurate to failurePositioning and instruction, are easy to staff to overhaul in time, it is ensured that power network is normally run.
In addition, in the present invention, signal transmission module is transmitted using RS485 modules or ethernet module in step D, energyEnough promptnesses for further improving monitoring.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be withA variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understandingAnd modification, the scope of the present invention is defined by the appended.