CN106772120A - A kind of generic power states monitoring system and its monitoring method - Google Patents
A kind of generic power states monitoring system and its monitoring method Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a kind of generic power states monitoring system, including multiple watch-dogs, each watch-dog includes a computation chip, and computation chip is used to gather the power parameter for surveying power supply；One sampling unit, sampling unit is connected to computation chip, and each phase power parameter is changed the power parameter to computation chip measures range；One display, for showing various parameters or information；One input-output unit, is connected to the display；One data communication module, for watch-dog and the data transfer of testing equipment and Surveillance center；One memory cell, is connected to the micro-control unit, for the storage of data or information；One micro-control unit, for processing the power parameter and diagnosing institute's measurement equipment circuit with the presence or absence of exception according to power parameter, and processes the exception.The invention also discloses a kind of monitoring method of generic power states monitoring system.
Description
Technical field
The present invention relates to fields such as electronics, communications, particularly a kind of generic power states monitoring system and its monitoring method.
Background technology
At present, there is the power train of complexity in the civil buildings such as China apartment, hotel, mall and general industry building
System, power supply running status is related to the Electrical Safety of resident and workman in power system.
In the prior art, the watch-dog of power supply status monitoring system has various, such as single-phase watch-dog, three-phase watch-dog etc.,
In general, these single-phase watch-dogs and multiphase watch-dog are only used for its Power Supply Monitoring being adapted, and can not unify to mix
Suitable to use, particularly a kind of watch-dog is applied to single-phase and three phase mains monitoring simultaneously.
And, existing watch-dog is usual because of the influence such as circuit, device in detection, and produces the error of parameter, causes
The judgement of mistake is produced in monitoring, monitoring effect is influenceed.And, watch-dog is in monitoring, it is impossible to real-time display monitoring knot
Really, the operation of influence user or monitoring personnel.
Accordingly, it would be desirable to research and develop a kind of watch-dog, it is applicable with adapting to polyphase source unification, and power parameter can be carried out
Whether real-time monitoring, real-time judge has the failures such as over-pressed, under-voltage, phase shortage, misphase, excessively stream (overload) and energy Realtime Alerts occur,
For improving electricity consumption reliability and security important in inhibiting.
The content of the invention
The purpose of the present invention is：A kind of generic power states monitoring system is provided, solve it is a kind of in the prior art or with
On technical problem.
Realizing the technical scheme of above-mentioned purpose is：A kind of generic power states monitoring system, including multiple watch-dogs, it is each
The watch-dog includes
One computation chip, computation chip is used to gather the power parameter for surveying power supply；
One sampling unit, sampling unit is connected to computation chip, each phase power parameter is changed to computation chip and measures model
Power parameter under enclosing；The computation chip is used to process the power parameter obtained from the sampling unit, including to the electricity
Source parameter is measured or measured；
One display, for showing various parameters or information；
One input-output unit, the input-output unit is connected to the display, and the input-output unit is used for
The input and output of parameter or information；
One data communication module, for watch-dog and the data transfer of testing equipment and Surveillance center；
One memory cell, is connected to the micro-control unit, for the storage of data or information；
One micro-control unit, the computation chip, display, data communication module, memory cell are connected to the micro-control
Unit processed, the micro-control unit is used to process the power parameter and diagnoses whether institute's measurement equipment circuit is deposited according to power parameter
In exception, and process the exception.
In an embodiment of the present invention, the display and the input-output unit are integrated in a touch screen；User is led to
Cross the touch screen or Surveillance center sets messaging parameter, the numbering of corresponding watch-dog and the position letter of data communication module
The access password of breath and the watch-dog.
In an embodiment of the present invention, the data communication module includes WIFI communication modules, RS485 communication modules, CAN
Bus communication module and wired
At least one in network communication module.
In an embodiment of the present invention, the watch-dog also includes
One power supply unit, is connected to the micro-control unit, and said supply unit is used to be powered for the watch-dog；
One reset unit, is connected to the micro-control unit, and the reset unit is used for the watch-dog that resets；
One switching value unit, is connected to the micro-control unit, and the switching value unit is used for detection switch
Amount；
One relay control unit, is connected to the micro-control unit, and the relay control unit is used to control circuit
Break-make；
One fault warning and indicating member, are connected to the micro-control unit.
In an embodiment of the present invention, the sampling unit
Including
One voltage sampling circuit, the voltage sampling circuit includes a voltage transformer, for high tension voltage to be converted into
Low voltage；
One current sampling circuit, the current sampling circuit includes a current transformer, for high-tension current to be converted into
Low-tension current.
It is another object of the present invention to：A kind of monitoring method of generic power states monitoring system is provided.
Realizing the technical scheme of above-mentioned purpose is：A kind of monitoring method of generic power states monitoring system, including it is following
Step,
S1 the power parameter of power supply is surveyed in) collection；
S2) power parameter is measured or measured；
S3 the power parameter after) treatment is measured or measured, and the circuit of surveyed power supply is judged with the presence or absence of exception, if
In the presence of then processing the exception.
In an embodiment of the present invention, the step S1) comprise the following steps,
S11 instantaneous voltage, the analog signal of electric current of power supply are surveyed in) the sampling unit collection；
S12 instantaneous voltage that) sampling unit will be gathered, the analog signal of electric current are converted to computation chip metering model
Voltage, current analog signal under enclosing；
S13) sampling unit sends to the computation chip voltage after conversion, the analog signal of electric current.
In an embodiment of the present invention, the step S2) comprise the following steps,
The step S2) comprise the following steps,
S21) computation chip reads voltage, the analog signal of electric current after the sampling unit conversion；
S22) analog signal of voltage, electric current is converted to digital parameters by the metering core, and the digital parameters are stored
To register.
In an embodiment of the present invention, when watch-dog monitors three phase mains,
The step S3) comprise the following steps,
S30) micro-control unit reads each phase voltage, the digital parameters of electric current of register；
S31) micro-control unit calculates each phase parameter of three phase mains according to each phase voltage, the digital parameters of electric current,
Each phase parameter includes voltage effective value, current effective value, active power, reactive power, apparent energy, active energy, nothing
Work(electric energy, apparent electric energy, power factor (PF), line frequency；
S32) micro-control unit carrys out Adjustable calculation value to obtain actual value using the coefficient that calibration determines；
S33) micro-control unit according to the actual value of each phase parameter judge the phase power supply whether phase shortage, if phase shortage,
Into step S34), if not phase shortage, into step S35)；
S34) fault warning described in the micro-control unit controls and indicating member carry out sound and light alarm, and by phase shortage exception
Information memory cell, and the phase shortage abnormal information is shown in the display, and by the phase shortage abnormal information send to
The Surveillance center；
S35 each phase parameter after) micro-control unit is according to calibration judge the phase power supply whether misphase, if misphase,
Into step S36), if not misphase, into step S37)；
S36) fault warning described in the micro-control unit controls and indicating member carry out sound and light alarm, and by misphase exception
Information memory cell, and the misphase abnormal information is shown in the display, and by the misphase abnormal information send to
The Surveillance center；
S37 each phase parameter after) micro-control unit is according to calibration judges whether the phase power supply over-pressed or under-voltage or mistake
Stream, if over-pressed or under-voltage or excessively stream, into step S38), if not over-pressed or under-voltage or excessively stream, into step S39)；
S38) fault warning described in the micro-control unit controls and indicating member carry out sound and light alarm, and will be over-pressed or deficient
Pressure or excessively stream abnormal information memory cell, and by the abnormal presentation of information of over-pressed or under-voltage or excessively stream phase in the display,
And send to the Surveillance center the over-pressed or under-voltage abnormal information；
S39) micro-control unit controls judge that the phase power supply status are normal, and the phase power supply normal state information is shown
Show in the display, and the phase power supply normal state information is sent to the Surveillance center.
In an embodiment of the present invention, the step S3) it is further comprising the steps of,
S310) micro-control unit controls read the feedback voltage of the switching value unit, judge the switch
State is respectively switched on-off in amount detection unit, and controls the fault warning and indicating member breaker in middle amount instruction lamp state
And on-off state is shown in the display, and control the relay control unit control relay output.
It is an advantage of the invention that：Generic power states monitoring system of the invention, flexible can access monitoring network, realize
It is general that multiphase and single phase poaer supply are monitored, and effectively reduces cost；Esy to use, safe and reliable, the multinomial power parameter of monitoring,
The realtime curve and Realtime Alerts of power supply status are realized, power system security in use is improve；This
The power supply status monitoring system monitoring method of invention, effectively reduces the error produced in each phase parameter of monitoring power supply, effectively
Solve the problems, such as system errors alarm and without and alarm, the degree of accuracy is high.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the generic power states monitoring system module diagram of the embodiment of the present invention.
Fig. 2 is the monitor module schematic diagram of the embodiment of the present invention.
Fig. 3 is the watch-dog monitoring flow graph of the embodiment of the present invention.
Fig. 4 is the monitor circuit structural representation of the embodiment of the present invention.
Fig. 5 is the watch-dog shell structure figure of the embodiment of the present invention.
Fig. 6 is the watch-dog monitoring step flow chart of the inventive method embodiment 1.
Fig. 7 is the watch-dog monitoring step flow chart of the inventive method embodiment 2.
Fig. 8 is the inventive method embodiment current mode voltage transformer electrical wiring schematic diagram.
Fig. 9 is the inventive method embodiment current transformer electrical wiring schematic diagram.
Wherein.
1 watch-dog；2 Surveillance center；
10 sampling units；11 computation chips；
12 touch screens；13 memory cell；
14 power supply units；15 reset units；
16 relay control units；17 switching value units；
18 fault warnings and indicating member；19 micro-control units.
Specific embodiment
The explanation of following examples is, with reference to additional schema, to be used to illustrate the particular implementation that the present invention may be used to implement
Example.The direction term that the present invention is previously mentioned, for example " on ", D score, "front", "rear", "left", "right", " top ", " bottom " etc., be only
With reference to the direction of annexed drawings.Therefore, the direction term for using is to illustrate and understand the present invention, and is not used to limit this hair
It is bright.
Embodiment：As shown in figure 1, in a kind of generic power states monitoring system, including the monitoring of multiple watch-dogs 1 and
The heart 2.The system is applied to single phase poaer supply and multinomial power supply.Each floor or each equipment are provided with a watch-dog 1.
As shown in Figures 2 to 5, each watch-dog 1 includes an a sampling unit 10, computation chip 11, a display, defeated
Enter output unit, a memory cell 13, a power supply unit 14, a reset unit 15, a relay control unit 16, a switching value
Detection unit 17, a fault warning and the micro-control unit 19 of indicating member 18 and.Above-mentioned each unit or device respectively with it is micro-
Control unit 19 is connected by circuit or signal is connected, and circuit part is integrated on a circuit board, and circuit board is installed on watch-dog 1
Housing in.
Wherein, sampling unit 10 is used to change the power parameter of surveyed power supply to the metering units model to be collected
Enclose.Sampling unit 10 includes a voltage sampling circuit, a current sampling circuit.The power parameter includes that voltage parameter, electric current are joined
Number.
Voltage sampling circuit includes a voltage transformer, and voltage transformer can be that the voltage transformer of voltage-type is used to incite somebody to action
High tension voltage is directly changed into low voltage；Or be the voltage transformer of current mode, this is repeated no more.Current sampling circuit
It is used to for high-tension current to be converted into low-tension current including a current transformer.Sampling unit 10 gather survey the voltage of power supply with
During electric current, high tension voltage and high-tension current are gathered first, believed above-mentioned high tension voltage by voltage transformer summation current transformer
Number and high-tension current signal be converted to low voltage signal and low-tension current signal, afterwards, be filtered by filter circuit.
Sampling unit 10 is connected to computation chip 11, and computation chip 11 is used to process the electricity obtained from the sampling unit 10
Source parameter, including the power parameter is measured or measured.Curtage signal is filtered in sample circuit
Afterwards, filtered voltage signal and current signal are converted into voltage digital parameter and current digital parameter.
Display is used to show various parameters or information.Input-output unit is connected to display, and input-output unit is used
In the input and output of parameter or information.In this example it is shown that device and input-output unit are integrated in a touch screen 12；Its
In, touch screen 12 is installed on the housing of the watch-dog 1, is easy to related personnel to read the information such as power parameter, power supply status, together
When housing on be also equipped with SR, terminals and various indicator lamps.User can be set by touch screen 12 or Surveillance center 2
Put the numbering and positional information, Yi Jijian of watch-dog 1 corresponding to messaging parameter, each floor or the equipment of data communication module
Floor number, communication mode, communication frequency, communication connection parameter for accessing password and watch-dog 1 of control device 1 etc..Such as to prison
Surveying the operation such as device parameter configuration needs corresponding access password, and distinguishes different grades of authority according to different operations, it is ensured that
The personnel for only authorizing can just carry out associative operation.The automatic recording operation information of monitor (operating time, operating personnel, operation
Content etc.) to local memory cell 13, be easy to analyze reason and accountability during the problems such as communication abnormality occur, such as monitor according to
The essential informations such as the rule numbers of formulation, the floor number being located at comprising equipment, numbering, date of manufacture.
Data communication module is used for watch-dog 1 with testing equipment and the data transfer of Surveillance center 2.Data transmission module bag
Include at least one in WIFI communication modules, RS485 communication modules, CAN communication module and wired network communication module.
In the present embodiment, except including above-mentioned all communication modules, also including other kinds of communication module, with suitable for different occasions
Information transmission, such as WIFI signals of communication cover in the case of, directly can be communicated by WIFI communication modules, do not having
The occasion of WIFI signals of communication covering can be by RS485 communication modules/wired network communication module/CAN communication module
Communicated with repeater or user's transport module so that monitor can be used for various occasions, in the present embodiment, it is also possible to utilize
WIFI communication modules, wired network communication module etc., the operation such as reset is performed by the remote control monitor of Surveillance center 2.
Table 1 is a kind of communication protocol of CAN communication module that the present invention is provided, and the data segment of table 1 can be voltage number
According to, current data, power supply status, on-off state, relay status.Herein, data segment is voltage data section in only providing table 1
When form.
The composition of the CAN communication protocol data frame of table 1：
In table 1, SOF:Frame starting；ID：It is the ID of connecting node；RTR：Identify whether to belong to remote frame, 0:Data frame, 1:
Remote frame, herein we be set to 0；IDE：Identifier selects position, 0:Using standard identifier, 1:Using extended identifier,
We are set to 0 for this；r0：Reserved bit；DLC：DLC sections represents section for data length, and high-order preceding, DLC section virtual value is 0-8；
Data:Data segment；CRC Sequence：Crc value；CRC Slot：CRC defines symbol：ACK：ACK sections；ACK Slot：ACK is defined
Symbol EOF：Frame end.
As shown in table 2, it is CAN communication voltage protocol data segment.Current data section and voltage data section, simply parse
When also need to divided by 10 so that monitoring range be 0~99.9A.By to abnormity of power supply type and on-off state, relay
Device state encoding is similarly transmitted in the form of the data segment of table 1.
The CAN communication voltage protocol data segment of table 2：
Voltage data section in the RS485 communication protocols that table 3 is provided for the present invention, each phase voltage is its correspondence position data
Xyz pieces together value.Other specification, power supply status, on-off state are similar with the RS485 communication protocols of relay status, no longer in detail
State.
The RS485 communication protocols voltage data of table 3 section：
Memory cell 13 is connected to micro-control unit 19, for the storage of data or information.In the present embodiment, memory cell
Including EEPROM or SD card etc., for being stored as parameter, operation information, abnormity of power supply information that monitor is configured etc., during power down
Above- mentioned information or parameter are stored in EEPROM or SD card, loss of data is prevented, when re-powering, micro-control unit 19 can be from
EEPROM or SD card read the data or information of storage.
Micro-control unit 19 is used to process the power parameter and diagnoses whether institute's measurement equipment circuit is deposited according to power parameter
In exception, and process the exception.
Power supply unit 14 is connected to micro-control unit 19, and power supply unit 14 is used to be powered for watch-dog 1；In the present embodiment
Power supply unit 14 includes voltage conversion circuit, battery, battery detection circuit, control and charging circuit, for watch-dog 1
Each element or unit provide power supply.Two inputs of the power supply circuit of power supply unit 14 are live wire and zero line, and output end is
The DC voltage that monitor needs.
Reset unit 15, is connected to micro-control unit 19, and reset unit 15 is used for reset control device 1；
Switching value unit 17, is connected to the micro-control unit 19, and switching value unit 17 is used for detection switch
Amount.
Relay control unit 16 is connected to micro-control unit 19, and the relay control unit 16 is used to control circuit
Break-make.
Fault warning and indicating member 18 are connected to the micro-control unit 19.The fault warning and indicating member 18 include
Electric indicator lamp, communication indicator lamp, alarm lamp, on off state indicator lamp, monitor work can be visually known according to these indicator lamps
Make the on off state of state, communications status, power supply status and relevant device.The indicator lamp is installed on the housing of watch-dog 1.On
Various lamps are stated for LED, except LED buzzer.
Wherein, table 4 is a kind of coded system of watch-dog 1 in the present embodiment.
Embodiment of the method 1
As shown in fig. 6, a kind of monitoring method of generic power states monitoring system, comprises the following steps.Need explanation
It is that the present embodiment is that three phase mains is monitored.
S1 the power parameter of power supply is surveyed in) collection.Specifically, the step S1) comprise the following steps.
Each phase instantaneous voltage, the analog signal of electric current of three phase mains are surveyed in the collection of S11 sampling units.
S12 each phase instantaneous voltage that) sampling unit will be gathered, the analog signal of electric current are converted to computation chip metering model
Voltage, current analog signal under enclosing.High tension voltage is such as converted to by low voltage by voltage transformer, by Current Mutual Inductance
High-tension current is converted to low-tension current by device.In this step, also including being filtered to low-tension current and low voltage, will
Clutter removal in low-tension current and low voltage analog signal.
S13) sampling unit sends to the computation chip 11 voltage after conversion, the analog signal of electric current.
S2) power parameter is measured or measured.The step S2) comprise the following steps.
S21) computation chip 11 receive each phase described in sampling unit send voltage, the analog signal of electric current extremely.
S22) analog signal of voltage, electric current is converted to digital parameters by the metering core, and the digital parameters are stored
To register and memory cell 13.
In above-mentioned steps S1) and S2) in, such as A, B, C represent each phase phase line of three phase mains；The three-phase of its corresponding power end
Voltage is ua, ub, uc；By current mode voltage transformer pt 1, PT2, PT3, (rated current is than being all 1 respectively for ua, ub, uc:1)
Relatively low voltage ua ', ub ', uc ' is changed into sampling resistor, such as (1-1), (1-2), (1-3) are shown for computing formula, then through filter
Wave circuit is input to the sampling pin of computation chip 11.Tri- phase lines of A, B, C are each passed through Current Transmit 1, CT2, CT3
(rated current is than being all n:1) the sampled resistance of the induced-current ia that, ia, ib, ic are produced ", ib ", ic " changes into relatively low electricity
Pressure ua ", ub ", uc ", such as (1-4), (1-5), (1-6) are shown for computing formula, then filtered circuit is input to computation chip 11 and adopts
Sample pin.
Ua '=ua* (R '/R) (1-1)
Ub '=ub* (R '/R) (1-2)
Uc '=uc* (R '/R) (1-3)
Ua "=(R ") * ia/n (1-4)
Ub "=(R ") * ib/n (1-5)
Uc "=(R ") * ic/n (1-6)
R ' is the resistance for being serially connected in voltage transformer input, and R is the resistance for being attempted by voltage transformer output end, R '<<
R。
S3 the power parameter after) treatment is measured or measured, and the circuit of surveyed power supply is judged with the presence or absence of exception, if
In the presence of then processing the exception.
When watch-dog 1 monitors three phase mains, the step S3) comprise the following steps.
S30) micro-control unit 19 reads each phase voltage, the digital parameters of electric current of memory cell 13.
S31) micro-control unit 19 is calculated and calculates each coherent of three phase mains according to each phase voltage, the digital parameters of electric current
Number, each phase parameter include voltage effective value, current effective value, active power, reactive power, apparent energy, active energy,
Reactive energy, apparent electric energy, power factor (PF), line frequency.In this step, certain phase voltage virtual value is calculated as follows formula (1-7)
It is shown.
Wherein, ph is expressed as the corresponding parameter in a certain phase register in A, B, C three-phase；Sample count are one second
Hits in clock, vphN () represents the voltage sample value in the register of moment n.
Likewise, current effective value is calculated as follows shown in formula (1-8).
Wherein, ph is expressed as the corresponding parameter in a certain phase register in A, B, C three-phase；Sample count are one second
Hits in clock, iphN () represents the current sampling data in the register at moment n.
S32) micro-control unit carrys out Adjustable calculation value to obtain actual value using the coefficient that calibration determines.
The following is the calibration equation (1-9) corresponding to voltage effective value.
VRMS,ph=kv,ph*vRMS, ph-vOffset, ph (1-9)
Wherein, kv,phIt is voltage effective value design factor, voffset,phIt is because the voltage that Gaussian white noise influence is produced has
Valid value side-play amount.When voltage effective value is not calibrated according to sample circuit parameter determination, it is modified after calibration so that after calibration
The voltage effective value for calculating is equal to the voltage effective value of actual measurement.
The following is the calibration equation (1-10) corresponding to voltage effective value.
IRMS, ph=kI, ph*iRMS, ph-iOffset, ph
Wherein, ki,phIt is current effective value design factor, ioffset,phIt is because the electric current that Gaussian white noise influence is produced has
Valid value side-play amount.When current effective value is not calibrated according to sample circuit parameter determination, it is modified after calibration so that after calibration
The current effective value for calculating is equal to the current effective value of actual measurement.
After calibration, the error between the parameter value and actual value that calculate is less than desired error range.Calibration process
It is to obtain deviant when no voltage or electric current are input into, after calibrated offset value, adjustment criteria voltage source and current source are exported,
According to actual parameter value and the parameter value for measuring, adjustment voltage effective value design factor, current effective value design factor.Need
Bright is：In the present embodiment, calibration is in product using preceding carrying out, that is to say, that before the system use, first to being
System carries out calibration adjustment, to determine calibration factor, only needs to, according to the calibration system for obtaining, be directly added into calibration factor meter afterwards
Calculate and can obtain actual value, therefore no longer calibrated when calculating, the present embodiment is merely for convenience of description.
Formula (1-11) to (1-21) be certain phase active power, reactive power, apparent energy, active energy, reactive energy,
Apparent electric energy, power factor (PF), the computing formula of line frequency.According to the numerical computations actual value of parameter register correspondence storage, root
Calibrated respectively according to standard source, no longer described in detail herein.
pACT,phIt is certain corresponding register value of phase active power, Sample count are the hits in a second, vph
N () is the corresponding register value of voltage sample value of moment n, iphN () is the corresponding register value of current sampling data of moment n.
PACT, ph=kACT, ph*pACT, ph (1-12)
pACT,phIt is certain phase active power value, k after calibrationACT,phIt is that active power calculates coefficient.It is not calibrated in active power
When be set to 1, be modified after calibration so that the active power for calculating is equal to the active power value of actual measurement.
pREACT,phIt is certain corresponding register value of phase reactive power, Sample count are the hits in a second, v90
N () is that moment n offsets 90 degree of corresponding register values of voltage sample value at phase angle, iphN () is the current sampling data pair of moment n
The register value answered.
PREACT,ph=kREACT,ph*pREACT,ph (1-14)
PREACT,phIt is reactive power value after certain is mutually calibrated, kREACT,phIt is that reactive power calculates coefficient.In the non-school of reactive power
1 is set on time, is modified after calibration so that the reactive power for calculating is equal to the reactive power value of actual measurement.
PAPP,phIt is that certain mutually calibrates backsight in performance number, PACT,phIt is active power value after certain is mutually calibrated, PREACT,phIt is certain phase
Reactive power value after calibration.
EACT,ph=PACT,ph*Samplecount (1-16)
EACT,phIt is active energy after certain is mutually calibrated, PACT,phIt is active power value after certain is mutually calibrated, Samplecount is always adopted
Sample number.
EREACT,ph=PREACT,ph*Samplecount (1-17)
EREACT,phIt is reactive energy after certain is mutually calibrated, PREACT,phIt is reactive power value after certain is mutually calibrated, Samplecount
Total hits.
EAPP,ph=PAPP,ph*Samplecount (1-18)
EAPP,phIt is that certain mutually calibrates backsight in electric energy, PAPP,phIt is that certain mutually calibrates backsight in performance number, Samplecount is always adopted
Sample number.
PF is power factor (PF), PACTIt is active power, PAPPIt is apparent energy, capacitive load uses the formula.
PF is power factor (PF), PACTIt is active power, PAPPIt is apparent energy, inductive load uses the formula.
Fre is line frequency, and Sampling rate are the hits of each second, and Frequency is in a signal period
Hits.
S33) micro-control unit 19 according to the actual value of each phase parameter judge the phase power supply whether phase shortage, if phase shortage,
Then enter step S34), if not phase shortage, into step S35).
S34) micro-control unit 19 controls the fault warning and indicating member 18 carries out sound and light alarm, and by phase shortage
Abnormal information memory cell 13, and the phase shortage abnormal information is shown in the display, and by the phase shortage abnormal information
Send to the Surveillance center 2.
S35 each phase parameter after) micro-control unit 19 is according to calibration judge the phase power supply whether misphase, if misphase,
Then enter step S36), if not misphase, into step S37).
S36) micro-control unit 19 controls the fault warning and indicating member 18 carries out sound and light alarm, and by misphase
Abnormal information memory cell 13, and the misphase abnormal information is shown in the display, and by the misphase abnormal information
Send to the Surveillance center 2.
S37 each phase parameter after) micro-control unit 19 is according to calibration judge the phase power supply it is whether over-pressed or under-voltage or
Excessively stream, if over-pressed or under-voltage or excessively stream, into step S38), if not over-pressed or under-voltage or excessively stream, into step S39).
S38) micro-control unit 19 controls the fault warning and indicating member 18 carries out sound and light alarm, and by overvoltage
Or under-voltage or excessively stream abnormal information memory cell 13, and mutually abnormal presentation of information shows in described by the over-pressed or under-voltage or excessively stream
Show device, and the over-pressed or under-voltage abnormal information is sent to the Surveillance center 2；
S39) the control of the micro-control unit 19 judges that the phase power supply status are normal, and by the phase power supply normal state information
The display is displayed in, and the phase power supply normal state information is sent to the Surveillance center 2.
S310 the feedback voltage of the switching value unit 17 is read in) the control of the micro-control unit 19, judges described
State is respectively switched on-off in switching value unit 17, and controls the fault warning and the breaker in middle amount of indicating member 18 to refer to
Show lamp state and on-off state is shown in the display, and control the control of relay control unit 16 relay
Device is exported.
Embodiment of the method 2
As shown in fig. 7, a kind of monitoring method of generic power states monitoring system, comprises the following steps.Need explanation
It is that the present embodiment is that single phase poaer supply is monitored.
S1 the power parameter of power supply is surveyed in) collection.Specifically, the step S1) comprise the following steps.
Each phase instantaneous voltage, the analog signal of electric current of three phase mains are surveyed in the collection of S11 sampling units.
S12 each phase instantaneous voltage that) sampling unit will be gathered, the analog signal of electric current are converted to computation chip metering model
Voltage, current analog signal under enclosing.High tension voltage is such as converted to by low voltage by voltage transformer, by Current Mutual Inductance
High-tension current is converted to low-tension current by device.In this step, also including being filtered to low-tension current and low voltage, will
Clutter removal in low-tension current and low voltage analog signal.
S13) sampling unit sends to the computation chip 11 voltage after conversion, the analog signal of electric current.
S2) power parameter is measured or measured.The step S2) comprise the following steps.
S21) computation chip 11 receive each phase described in sampling unit send voltage, the analog signal of electric current extremely.
S22) analog signal of voltage, electric current is converted to digital parameters by the metering core, and the digital parameters are stored
To register and memory cell 13.
S3 the power parameter after) treatment is measured or measured, and the circuit of surveyed power supply is judged with the presence or absence of exception, if
In the presence of then processing the exception.
When watch-dog 1 monitors single phase poaer supply, the step S3) comprise the following steps.
S30) micro-control unit 19 reads voltage, the digital parameters of electric current of register.
S31) micro-control unit 19 calculates each phase parameter of three phase mains, institute according to each phase voltage, the digital parameters of electric current
Stating each phase parameter includes voltage effective value, current effective value, active power, reactive power, apparent energy, active energy, idle
Electric energy, apparent electric energy, power factor (PF), line frequency.
S32) micro-control unit carrys out Adjustable calculation value to obtain actual value using the coefficient that calibration determines.Above step
The step of with embodiment of the method 1, is roughly the same, and this is repeated no more.
In single-phase monitoring method, including following monitoring step.
S37) each phase parameter actual value of the micro-control unit 19 judges whether the phase power supply over-pressed or under-voltage or excessively stream, if
Over-pressed or under-voltage or excessively stream, then into step S38), if not over-pressed or under-voltage or excessively stream, into step S39).
S38) micro-control unit 19 controls the fault warning and indicating member 18 carries out sound and light alarm, and by overvoltage
Or under-voltage or excessively stream abnormal information memory cell 13, and mutually abnormal presentation of information shows in described by the over-pressed or under-voltage or excessively stream
Show device, and the over-pressed or under-voltage abnormal information is sent to the Surveillance center 2；
S39) control of micro-control unit 19 judges that the phase power supply status are normal, and the phase power supply normal state information is shown
In the display, and the phase power supply normal state information is sent to the Surveillance center 2.
S310 the feedback voltage of the switching value unit 17 is read in) the control of micro-control unit 19, judges switch
State, and control fault warning and the breaker in middle amount instruction of indicating member 18 are respectively switched on-off in amount detection unit
Lamp state and on-off state is shown in display, and controls the control relay of relay control unit 16 defeated
Go out.
Detailed process is the feedback voltage that the read switch amount of micro-control unit 19 detects circuit, judges on off operating mode, accordingly
On-off state and is shown controlling switch amount instruction lamp state on-off state information passes through CAN/485/ in touch screen 12 on ground
A kind of communication mode of WIFI/ cable networks is transferred to repeater or industrial computer (Surveillance center 2).Such as when power supply appearance exception can
With control relay output cut-out three phase mains so as to protect relevant device.
When surveyed power supply occurs abnormal, LED alarm lamp flashes or Chang Liang, and buzzer sends alarm sound, and phase shortage, mistake
The Exception Types such as phase, under-voltage, over-pressed and excessively stream can be displayed on LCD, and it is automatic by Exception Type and abnormal time of occurrence and
Abnormal elimination time storage is in local EEPROM.
Monitor communication process is according to formulation by voltage parameter, power supply status, on-off state and relay status
Agreement is transmitted, and the communication mode that can be selected has CAN, 485, WIFI, cable network (to be selected according to different application scenarios
With).
It should be pointed out that for the present invention through absolutely proving, can also have the embodiment of various conversion and remodeling,
It is not limited to the specific embodiment of above-mentioned implementation method.Above-described embodiment as just explanation of the invention, rather than to this
The limitation of invention.In a word, protection scope of the present invention should include that those are apparent to those skilled in the art
Conversion or replacement and remodeling.
Claims (10)
1. a kind of generic power states monitoring system, it is characterised in that including multiple watch-dogs, each prison
Control device includes
One computation chip, computation chip is used to gather the power parameter for surveying power supply；
One sampling unit, sampling unit is connected to computation chip, and each phase power parameter is changed to computation chip measures range
Power parameter；The computation chip is used to process the power parameter obtained from the sampling unit, including the power supply is joined
Number is measured or measured；
One display, for showing various parameters or information；
One input-output unit, the input-output unit is connected to the display, and the input-output unit is used for parameter
Or the input and output of information；
One data communication module, for watch-dog and the data transfer of testing equipment and Surveillance center；
One memory cell, is connected to the micro-control unit, for the storage of data or information；
One micro-control unit, the computation chip, display, data communication module, memory cell are connected to the microcontroller list
Unit, the micro-control unit is used to process the power parameter and diagnoses institute's measurement equipment circuit with the presence or absence of different according to power parameter
Often, and the exception is processed.
2. generic power states monitoring system according to claim 1, it is characterised in that the display and the input
Output unit is integrated in a touch screen；User is joined by the communication that the touch screen or Surveillance center set data communication module
The numbering and positional information and the access password of the watch-dog of several, corresponding watch-dog.
3. generic power states monitoring system according to claim 1, it is characterised in that the data are passed
Defeated module includes WIFI communication modules, RS485 communication modules, CAN bus communications module and wired network communication module
In at least one.
4. generic power states monitoring system according to claim 1, it is characterised in that the prison
Control device also includes
One power supply unit, is connected to the micro-control unit, and said supply unit is used to be powered for the watch-dog；
One reset unit, is connected to the micro-control unit, and the reset unit is used for the watch-dog that resets；
One switching value unit, is connected to the micro-control unit, and the switching value unit is used for detection switch amount；
One relay control unit, is connected to the micro-control unit, and the relay control unit is used to control the logical of circuit
It is disconnected；
One fault warning and indicating member, are connected to the micro-control unit.
5. generic power states monitoring system according to claim 1, it is characterised in that the sampling list
Unit includes
One voltage sampling circuit, the voltage sampling circuit includes a voltage transformer, for high tension voltage to be converted into low pressure
Voltage；
One current sampling circuit, the current sampling circuit includes a current transformer, for high-tension current to be converted into low pressure
Electric current.
6. a kind of monitoring method of generic power states monitoring system as claimed in claim 1, it is characterised in that including following
Step,
S1）The power parameter of power supply is surveyed in collection；
S2）The power parameter is measured or measured；
S3）The power parameter after treatment measurement or metering, and the circuit of surveyed power supply is judged with the presence or absence of abnormal, if depositing
Then the exception is being processed.
7. the monitoring method of generic power states monitoring system according to claim 6, it is characterised in that the step
S1）Comprise the following steps,
S11）Instantaneous voltage, the analog signal of electric current of power supply are surveyed in the sampling unit collection；
S12）Instantaneous voltage that the sampling unit will be gathered, the analog signal of electric current are converted under computation chip measures range
Voltage, current analog signal；
S13）The sampling unit sends to the computation chip voltage after conversion, the analog signal of electric current.
8. the monitoring method of generic power states monitoring system according to claim 7, it is characterised in that the step
S2）Comprise the following steps,
S21）The computation chip reads voltage, the analog signal of electric current after the sampling unit conversion；
S22）The analog signal of voltage, electric current is converted to digital parameters by the metering core, and the digital parameters are stored to posting
Storage.
9. the monitoring method of generic power states monitoring system according to claim 8, it is characterised in that when watch-dog prison
When surveying three phase mains,
The step S3）Comprise the following steps,
S30）The micro-control unit reads each phase voltage, the digital parameters of electric current of register；
S31）The micro-control unit calculates each phase parameter of three phase mains according to each phase voltage, the digital parameters of electric current, described
Each phase parameter includes voltage effective value, current effective value, active power, reactive power, apparent energy, active energy, idle electricity
Energy, apparent electric energy, power factor (PF), line frequency；
S32）The micro-control unit carrys out Adjustable calculation value to obtain actual value using the coefficient that calibration determines；
S33）The micro-control unit according to the actual value of each phase parameter judge the phase power supply whether phase shortage, if phase shortage, enter
Step S34）If, not phase shortage, into step S35）；
S34）Fault warning described in the micro-control unit controls and indicating member carry out sound and light alarm, and phase shortage is believed extremely
Breath memory cell, and the phase shortage abnormal information is shown in the display, and the phase shortage abnormal information is sent to institute
State Surveillance center；
S35）The micro-control unit according to calibration after each phase parameter judge the phase power supply whether misphase, if misphase, enter
Step S36）If, not misphase, into step S37）；
S36）Fault warning described in the micro-control unit controls and indicating member carry out sound and light alarm, and misphase is believed extremely
Breath memory cell, and the misphase abnormal information is shown in the display, and the misphase abnormal information is sent to institute
State Surveillance center；
S37）The micro-control unit according to calibration after each phase parameter judge whether the phase power supply over-pressed or under-voltage or excessively stream,
If over-pressed or under-voltage or excessively stream, into step S38）If, not over-pressed or under-voltage or excessively stream, into step S39）；
S38）Fault warning described in the micro-control unit controls and indicating member carry out sound and light alarm, and will be over-pressed or under-voltage
Or excessively stream abnormal information memory cell, and by the over-pressed or under-voltage or excessively stream mutually abnormal presentation of information in the display, with
And send to the Surveillance center the over-pressed or under-voltage abnormal information；
S39）The micro-control unit controls judge that the phase power supply status are normal, and the phase power supply normal state information is included
The display, and the phase power supply normal state information is sent to the Surveillance center.
10. the monitoring method of generic power states watch-dog according to claim 8, it is characterised in that the step S3）
It is further comprising the steps of,
S310）The micro-control unit controls read the feedback voltage of the switching value unit, judge the switching value inspection
Survey in unit and respectively switch on-off state, and control the fault warning and indicating member breaker in middle amount instruction lamp state and
On-off state is shown in the display, and controls the relay control unit control relay output.
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| CN201611214539.2A CN106772120A (en) | 2016-12-26 | 2016-12-26 | A kind of generic power states monitoring system and its monitoring method |
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| CN111722040A (en) * | 2020-06-24 | 2020-09-29 | 航天新长征大道科技有限公司 | Dual negative feedback loop four-quadrant V/I source measurement unit board card based on CPCI bus |
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| CN112034375A (en) * | 2020-08-10 | 2020-12-04 | 中捷通信有限公司 | Communication power supply monitoring and module maintenance test system |
| CN113539001A (en) * | 2021-07-27 | 2021-10-22 | 广东电网有限责任公司 | Metering acquisition operation and maintenance simulation device and method |
| CN114076842A (en) * | 2021-11-18 | 2022-02-22 | 中国电信股份有限公司 | Switching power supply, electric energy metering and displaying method and device thereof, and storage medium |
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