CN106291030B - A kind of distribution network metering guard system - Google Patents
A kind of distribution network metering guard system Download PDFInfo
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- CN106291030B CN106291030B CN201610855725.8A CN201610855725A CN106291030B CN 106291030 B CN106291030 B CN 106291030B CN 201610855725 A CN201610855725 A CN 201610855725A CN 106291030 B CN106291030 B CN 106291030B
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/08—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using analogue techniques
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Abstract
The present invention provides a kind of distribution network metering guard system, comprising: monitoring server, the data acquisition subsystem being connect with monitoring server by GPRS or fiber optic communication；Data acquisition subsystem is used for the electric energy meter in each monitoring area, it controls electric switch and carries out data acquisition, data acquisition subsystem includes: data acquisition storage module, electric energy meter data acquisition module, quantity of state acquisition module, pulsed quantity acquisition module, ac analog acquisition module, historical data processing module, meter reading day data processing module, history moon data processing module；System realizes the real-time tracking inquiry and meter reading to electric energy meter, and amr message will be sent to monitoring server, can timely find the generation of power grid metering criminal offence.Once there is electric energy meter unusual condition, monitoring server can the processing of discovery in time, and history evidence can be retained.
Description
Technical field
The present invention relates to field of power distribution more particularly to a kind of distribution network metering guard systems.
Background technique
In recent years, power grid metering criminal offence has the essential characteristics such as concealment, mobility, sudden, but also
Present specialization, high-technicalization, transprovincially fleeing trend, investigation difficulty is increasing.
When power utility check personnel reach the inspection of suspicion user metering device, criminal in advance will damage power grid metering
Equipment remove, it is difficult to find.Even if it was found that phenomena such as electricity box are destroyed causes processing is difficult to show due to lacking strong evidence
Shape.
Summary of the invention
In order to overcome the deficiencies in the prior art described above, the object of the present invention is to provide a kind of protection of distribution network metering
System, comprising: monitoring server, the data acquisition subsystem being connect with monitoring server by GPRS or fiber optic communication；
Data acquisition subsystem is used to control electric switch to the electric energy meter in each monitoring area and carry out data acquisition, data
Acquisition subsystem includes: data acquisition storage module, electric energy meter data acquisition module, quantity of state acquisition module, pulsed quantity acquisition
Module, ac analog acquisition module, historical data processing module, meter reading day data processing module, history moon data processing mould
Block；
Electric energy meter data acquisition module be used for by setting meter reading day or timing acquisition time interval to electric energy meter data into
Row acquisition, storage, and acquisition electric energy meter data are sent to monitoring server under monitoring server driving；
Quantity of state acquisition module is conjugated for acquiring low-voltage platform area low tension switch location status, low tension switch in real time
When, by low tension switch displacement information storage, and it is sent to monitoring server；
Pulsed quantity acquisition module is used to receive the pulse of electric energy meter output, and according to electric energy meter meter constant Kp imp/
KWh, TV no-load voltage ratio KTV, TA no-load voltage ratio KTA calculate mean power per minute, and when recording the same day, of that month power maximum value and occurring
Between, and it is sent to monitoring server；
Ac analog acquisition module is used for by requirement predeterminated voltage, electric current, power, power, power factor simulation
Amount acquisition measures voltage, electric current, power, power factor, and has the out-of-limit statistics of voltage monitoring, and voltage class of accuracy is
0.5, there is harmonic data statistics, harmonic component class of accuracy is 1；
Historical data processing module is used for the data that will acquire as unit of day, in next day zero point history of forming day data,
And nearest data on the 30th are saved, all kinds of freeze song every being formed with 15min, 30min, 45min, 60min according to the guick freezing room of setting
Line number evidence, and the last 30 days curve data is saved, and be sent to monitoring server；
The data that meter reading day data processing module is used to acquire form meter reading day in the meter reading day of setting and meter reading time
Data, and nearest 12 meter reading days data are saved, and be sent to monitoring server；
The data that history moon data processing module is used to acquire are saved in the various history moon data of the end of month Null steering
Nearest 12 months moon data, and it is sent to monitoring server；
Monitoring server include: electric energy meter operation conditions monitoring modular, voltage monitoring module, power-factor monitoring module,
Module, limit value setup module, pre-payment control module, meter reading date period setup module when school；
Electric energy meter operation conditions monitoring modular is used for the data information that data acquisition subsystem is sent, monitoring electric energy meter operation
Situation, monitoring electric energy meter operation conditions include: that parameters of electric energy meter changes, the electric energy meter time is overproof, electric meter fault information, electric energy meter
Indication decline, electric energy meter flies away, electric energy meter stops walking, infrared induction record, magnetic induction disturbance records；
Voltage monitoring module is counted for monitoring to Network Voltage Deviation to power grid rate of qualified voltage；
Power-factor monitoring module is used to divide the power factor of monitoring point by the power factor segmentation limit value of setting
Analysis statistics, monthly power factor gets over limit value generation in the cumulative time of each section to record；
Instructed when module is used for data acquisition subsystem tranmitting data register school when school, make that data acquisition subsystem acquires when
Clock is identical as the crystal oscillator clock of monitoring server；
The voltage and current that limit value setup module is used to be arranged electric energy meter in monitoring area gets over limit value, power factor segmentation limit
Value；
Pre-payment control module is for being arranged and inquiring prepayment electric expense value, alarm door limit value, trip value pre-payment control
Parameter processed；
Meter reading date period setup module be used to be arranged meter reading day of data acquisition subsystem, the meter reading time, meter reading interval,
Meter reading parameter.
Preferably, monitoring server further include: power setting module；
Power setting module is used to be arranged the upper limit of the power value of each electricity consumer；
Data acquisition subsystem further include: consumption power is rationed the power supply module；
Consumption power rations the power supply module for monitoring realtime power within the scope of power limit, when electricity consumer consumption power reaches
Limit value then executes power definite value closed loop control function automatically, executes tripping.
Preferably, monitoring server further include: electricity statistical module, day electric energy statistical module, quantitative analysis module, transformation
Device monitoring modular, platform area electrical energy consumption analysis module；
Electricity statistical module is used to generate each electricity consumer electric flux registration curve and calculate total electric flux curve, and in number
According to being stored in library, when electric flux registration curve or electric flux curve abnormality, relevant alarm event is generated；
The day that day electric energy statistical module is used to generate each electricity consumer and calculates day total electric flux at electric flux indicating value, works as electric energy
When measuring indicating value or day total electric energy data exception, relevant alarm event is generated；
Quantitative analysis module is used for by the voltage of acquisition, electric current, power, power factor, indicating value and switching value information,
Carry out the real-time working condition that analysis generates exception information；
Transformer monitoring module is used to monitor the three-phase voltage of transformer, calculates imbalance of three-phase voltage rate, and be associated with
Electric current, voltage, the power graph of specific electricity consumer calculate voltage distortion rate, the journey of voltage waveform distortion according to harmonic data
Degree；Voltage harmonic aberration rate is the percentage of root-mean-square value and the ratio between the fundamental voltage RMS of each harmonic voltage to indicate:
In formula: α --- voltage harmonic aberration rate；
un(n=2,3 ...) --- nth harmonic voltage effective value, u1--- fundamental voltage RMS,
It is also used to monitor the three phases active power of transformer, calculates three phases active power unbalance factor, and tool can be associated with
Electric current, voltage, the power graph of body electricity consumer；
Platform area electrical energy consumption analysis module calculates every balcony area summary table integral point load and peak load for counting, and counts under platform area
User power consumption calculates the comprehensive electrostrictive coefficient in platform area；Synthesis is that whole low pressure are used in transformer peak load/platform area with electrostrictive coefficient
Family calculates total load, provides foundation to the selection of platform area transformer, the selection of platform area low-voltage circuit.
Preferably, data acquisition subsystem further include: be arranged in primary side three-phase electricity current transformer, primary side three-phase electricity
Press mutual inductor, secondary side three-phase electricity current transformer, secondary side threephase potential transformer；Primary side three-phase electricity current transformer is real
When acquisition high-pressure side three-phase current data and be transferred to monitoring server；Secondary side three-phase electricity current transformer acquires low pressure in real time
Side three-phase current data are simultaneously transferred to monitoring server；
Monitoring server further include: line loss analysis module, apparent energy curve generation module, apparent energy compare mould
Block, data interaction platform；
Line loss analysis module is used for the topological structure according to power grid, daily acquires single-phase, three-phase user under route
With the electricity consumption of platform area summary table the active loss of every route is analyzed in real time, more than one by establishing line loss analyzing model
It is alerted after determining threshold values；
Apparent energy contrast module is used for according to the primary side three-phase electricity electric current of real-time Transmission, primary side three-phase voltage, and two
Secondary side three-phase electricity electric current, secondary side three-phase voltage calculate active power, reactive power, and obtain apparent energy, and view is made and exists
Power curve；
Apparent energy contrast module carries out data comparison simultaneously for comparing primary side power information and secondary side power information
Two apparent energy curves are depicted as in the same page, are reflected to whether first and second side power information of user deposits on a display screen
In multiplexing electric abnormality；
Data interaction platform carries out at tracking system for realizing communication is exchanged between user of service and operation maintenance personnel
Reason, and the client port of mobile terminal connection is provided, so that user of service is connect data using mobile terminal with operation maintenance personnel
Interaction platform；
Platform also provides for power information acquisition system construction specification, standard, acquisition system operation manual, asks common
Topic abnormality eliminating method related data sorted out, shown, facilitate user to consult, realize knowledge document management, knowledge collect with
Guidance, frequently asked questions function, angularly to be counted according to problem generation area, problem category, submission time, solution time
Summarize, analyze.
Preferably, the communication between monitoring server and data acquisition subsystem is equipped with repeater.
Preferably, monitoring server further include: secondary side phase voltage compares to determine module, secondary side phase current compares to determine
Module, power determination module, power factor determination module；
Secondary side phase voltage compares to determine module for each phase voltage data of secondary side and each phase voltage of secondary side are basic
Reference voltage in data is compared, if measuring voltage lower than reference voltage 20% or more, is judged as under-voltage；If measuring electricity
Pressure ratio reference voltage is high by 20% or more, then is judged as superpressure；If voltage is 0, it is judged as decompression；
Secondary side phase current compares to determine module for according to each phase current data of secondary side, calculating current three-phase imbalance
Rate, the condition for meeting (maximum current value-minimum current value)/maximum current value >=30% are then judged as three-phase current unbalance；
If minimum current value is 0, it is judged as defluidization；
Power determination module is used for
When meeting following condition, then it is judged as power exception:
(P2-P3)/P2>=30%
Phase three-wire three:
Three-phase and four-line:
By P1Compared with active power data, biggish value is taken as P2, small value is taken as P3
Wherein, UA, UB, UCFor each phase voltage value, IA, IB, ICFor each phase current values,It is taken as normal value, generally
0.8-0.9,
PreferablyIt is 0.866, that is, takesIt is 30 °；
Power factor determination module is used for
If meeting following condition, it is judged as " power factor is abnormal ":
P: the active power of power information acquisition system acquisition
S: apparent energy, for according to Current Voltage computed information, in which:
Phase three-wire three:
Three-phase and four-line: S1=UAIA+UBIB+UCIC。
Preferably, data acquisition subsystem further include: secondary side current sampling transformation module, A/D conversion module, processing
Device, memory, power module；
Power module obtains electric energy from primary side route and uses after transformation, rectification, filtering for whole device；
The electric current that secondary side current sampling transformation module is used to secondary side three-phase current being converted to nominal value as 5A, then
The electric current of 5A is converted to the voltage signal that nominal value is 5V；Voltage signal generates the identical square wave of frequency by zero-crossing comparator；
In favor of frequency measurement and realize pile defection.
A/D conversion module is used to carry out A/D conversion to voltage signal, and the voltage signal after conversion is transferred to processing
Device；
Processor is used to carry out the calculating of electric current and power virtual value using voltage signal as reference voltage u (n),
Calculation formula is as follows:
Wherein i (n) is sampled value, and N is sampling number；
And the result obtained after calculating is stored in memory.
Preferably, data acquisition subsystem further include: the camera of each monitoring area is set, video processing module,
Video transmission module；
Camera is used to absorb the video image in monitoring area；
Video processing module is used to carry out compression encryption to the video image in camera intake monitoring area, and leads to
Video transmission module is crossed by transmission of video images to monitoring server.
Preferably, data acquisition subsystem further include: detection device；
The detection device includes: thermistor, and one end of thermistor is connected to two feet of amplifier, other end connection amplification
Three feet of device, two feet of amplifier are connect with one end of the photoisolator of thermistor parallel connection, and the other end connects amplifier
The output end connection of three feet, the power supply VCC1 of four foot connection+5V of amplifier, the 11 foot feet ground connection of amplifier, amplifier is fixed
When device four feet, six feet and two feet of timer are connected between resistance R4 second end and capacitor C1 first end simultaneously, resistance R4
First end connect with resistance R3 second end；Resistance R3 first end is terminated by resistance R2 connection power supply VCC2, capacitor C1 second
Ground, the octal of timer meet power supply VCC3, and the foot ground connection of timer, three feet of timer are the output end of signal, output
Signal connects warning device；
The warning device includes: the Light-emitting diode LED connecting with three feet of timer, Light-emitting diode LED and three
The base stage of pole pipe is connected, and the collector of triode connects power supply VCC4, and emitter connects resistance R5 first end, resistance R5 second end
Ground connection, transistor emitter connect capacitor C2 first end, and capacitor C2 second end is connect with acoustical generator first end, acoustical generator second end
Ground connection.
As can be seen from the above technical solutions, the invention has the following advantages that
System realizes the real-time tracking inquiry and meter reading to electric energy meter, and amr message will be sent to monitoring service
Device can timely find the generation of power grid metering criminal offence.Once there is electric energy meter unusual condition, monitoring server
Can the processing of discovery in time, and history evidence can be retained.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in description will be made below simple
Ground introduction, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill
For personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall schematic of distribution network metering guard system；
Schematic diagram of the Fig. 2 between monitoring server and data acquisition subsystem；
Fig. 3 is detection device circuit diagram；
Fig. 4 is warning device circuit diagram.
Specific embodiment
It in order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below will be with specific
Examples and drawings, the technical solution protected to the present invention are clearly and completely described, it is clear that implementation disclosed below
Example is only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in this patent, the common skill in this field
Art personnel all other embodiment obtained without making creative work belongs to the model of this patent protection
It encloses.
The present embodiment provides a kind of distribution network metering guard systems, as shown in Figure 1 and Figure 2, comprising: monitoring server 1, with
The data acquisition subsystem 2 that monitoring server 1 is connected by GPRS or fiber optic communication；
Data acquisition subsystem 2 is used to control electric switch to the electric energy meter in each monitoring area and carry out data acquisition, data
It includes multiple data acquisition subsystems 2 that acquisition subsystem 2, which is arranged in each monitoring area, that is, in system, each
Data acquisition subsystem 2 is equipped in monitoring area.Each data acquisition subsystem 2 is communicated to connect with monitoring server 1.
Data acquisition subsystem 2 includes: that data acquisition storage module 11, electric energy meter data acquisition module 12, quantity of state are adopted
Collect module 13, pulsed quantity acquisition module 14, ac analog acquisition module 15, historical data processing module 16, meter reading day data
Processing module 17, history moon data processing module 18；
Electric energy meter data acquisition module 12 is used for meter reading day or timing acquisition time interval by setting to electric energy meter data
It is acquired, stores, and acquisition electric energy meter data are sent to monitoring server under monitoring server driving；
Quantity of state acquisition module 13 is conjugated for acquiring low-voltage platform area low tension switch location status, low tension switch in real time
When, by low tension switch displacement information storage, and it is sent to monitoring server；
Pulsed quantity acquisition module 14 is used to receive the pulse of electric energy meter output, and according to electric energy meter meter constant Kp imp/
KWh, TV no-load voltage ratio KTV, TA no-load voltage ratio KTA calculate mean power per minute, and when recording the same day, of that month power maximum value and occurring
Between, and it is sent to monitoring server；
Ac analog acquisition module 15 is used to press requirement predeterminated voltage, electric current, power, power, power factor mould
Analog quantity acquisition measures voltage, electric current, power, power factor, and has the out-of-limit statistics of voltage monitoring, and voltage class of accuracy is
0.5, there is harmonic data statistics, harmonic component class of accuracy is 1；
The data that historical data processing module 16 is used to acquire are as unit of day, in next day zero point history of forming number of days
According to and saving nearest data on the 30th, the guick freezing room according to setting is every forming all kinds of freeze with 15min, 30min, 45min, 60min
Curve data, and the last 30 days curve data is saved, and be sent to monitoring server；
Meter reading day, the data for that will acquire of data processing module 17 were in the meter reading day of setting and the formation meter reading of meter reading time
Day data, and nearest 12 meter reading days data are saved, and be sent to monitoring server；
The history moon, the data for that will acquire of data processing module 18 were in the various history moon data of the end of month Null steering, and protected
Nearest 12 months moon data are deposited, and are sent to monitoring server；
The real-time tracking inquiry and meter reading to electric energy meter are thereby realized, and amr message will be sent to monitoring service
Device can timely find the generation of power grid metering criminal offence.Once there is electric energy meter unusual condition, monitoring server
Can the processing of discovery in time, and history evidence can be retained.
Monitoring server 1 includes: electric energy meter operation conditions monitoring modular 21, voltage monitoring module 22, power-factor monitoring
Module 24, limit value setup module 25, pre-payment control module 26, meter reading date period setup module 27 when module 23, school；
Electric energy meter operation conditions monitoring modular 21 is used for the data information that data acquisition subsystem is sent, monitoring electric energy meter fortune
Row situation, monitoring electric energy meter operation conditions include: that parameters of electric energy meter changes, the electric energy meter time is overproof, electric meter fault information, electric energy
Degree of a representation decline, electric energy meter flies away, electric energy meter stops walking, infrared induction record, magnetic induction disturbance records；
Voltage monitoring module 22 is counted for monitoring to Network Voltage Deviation to power grid rate of qualified voltage；
Power-factor monitoring module 23 is used to carry out the power factor of monitoring point by the power factor segmentation limit value of setting
Analysis statistics, monthly power factor gets over limit value generation in the cumulative time of each section to record；
It is instructed when module 24 is used for data acquisition subsystem tranmitting data register school when school, acquires data acquisition subsystem
Clock is identical as the crystal oscillator clock of monitoring server；Limit value setup module 25 for be arranged in monitoring area the voltage of electric energy meter and
Electric current gets over limit value, power factor segmentation limit value；Pre-payment control module 26 is for being arranged and inquiring prepayment electric expense value, alarm threshold
Value, trip value pre-payment control parameter；Meter reading date period setup module 27 is for being arranged copying for data acquisition subsystem
Table day, meter reading time, meter reading interval, meter reading parameter.
In the present embodiment, monitoring server 1 further include: power setting module 28；Power setting module 28 is every for being arranged
The upper limit of the power value of a electricity consumer；
Data acquisition subsystem 2 further include: consumption power is rationed the power supply module 19；Consumption power rations the power supply module 19 in power
Realtime power is monitored in limits, then executes power definite value closed-loop control function automatically when electricity consumer consumption power reaches limit value
Can, execute tripping.
In the present embodiment, monitoring server 1 further include: electricity statistical module 29, day electric energy statistical module 31, quantitative analysis
Module 32, transformer monitoring module 33, platform area electrical energy consumption analysis module 34；
Electricity statistical module 29 is used to generate each electricity consumer electric flux registration curve and calculates total electric flux curve, and
It is stored in database, when electric flux registration curve or electric flux curve abnormality, generates relevant alarm event；
Day electric energy statistical module 31 electric flux indicating value and calculates day total electric flux for generating the day of each electricity consumer, works as electricity
When energy indicating value or day total electric energy data exception, relevant alarm event is generated；
Quantitative analysis module 32 is used for by believing the voltage of acquisition, electric current, power, power factor, indicating value and switching value
Breath carries out the real-time working condition that analysis generates exception information；
Transformer monitoring module 33 is used to monitor the three-phase voltage of transformer, calculates imbalance of three-phase voltage rate, and be associated with
Voltage distortion rate, the journey of voltage waveform distortion are calculated according to harmonic data to the electric current, voltage, power graph of specific electricity consumer
Degree；Voltage harmonic aberration rate is the percentage of root-mean-square value and the ratio between the fundamental voltage RMS of each harmonic voltage to indicate:
In formula: α --- voltage harmonic aberration rate；
un(n=2,3 ...) --- nth harmonic voltage effective value, u1--- fundamental voltage RMS,
It is also used to monitor the three phases active power of transformer, calculates three phases active power unbalance factor, and tool can be associated with
Electric current, voltage, the power graph of body electricity consumer；
Platform area electrical energy consumption analysis module 34 calculates every balcony area summary table integral point load and peak load for counting, and counts platform area
Lower user power consumption calculates the comprehensive electrostrictive coefficient in platform area；Synthesis is whole low pressure in transformer peak load/platform area with electrostrictive coefficient
User calculates total load, provides foundation to the selection of platform area transformer, the selection of platform area low-voltage circuit.
In the present embodiment, data acquisition subsystem 2 further include: be arranged in primary side three-phase electricity current transformer, primary side
Threephase potential transformer, secondary side three-phase electricity current transformer, secondary side threephase potential transformer；Primary side three-phase electricity electric current is mutual
Sensor acquires high-pressure side three-phase current data in real time and is transferred to monitoring server；Secondary side three-phase electricity current transformer is adopted in real time
Collection low-pressure side three-phase current data are simultaneously transferred to monitoring server；
Monitoring server further include: line loss analysis module, apparent energy curve generation module, apparent energy compare mould
Block, data interaction platform；
Line loss analysis module is used for the topological structure according to power grid, daily acquires single-phase, three-phase user under route
With the electricity consumption of platform area summary table the active loss of every route is analyzed in real time, more than one by establishing line loss analyzing model
It is alerted after determining threshold values；
Apparent energy contrast module is used for according to the primary side three-phase electricity electric current of real-time Transmission, primary side three-phase voltage, and two
Secondary side three-phase electricity electric current, secondary side three-phase voltage calculate active power, reactive power, and obtain apparent energy, and view is made and exists
Power curve；
Apparent energy contrast module carries out data comparison simultaneously for comparing primary side power information and secondary side power information
Two apparent energy curves are depicted as in the same page, are reflected to whether first and second side power information of user deposits on a display screen
In multiplexing electric abnormality；
Data interaction platform carries out at tracking system for realizing communication is exchanged between user of service and operation maintenance personnel
Reason, and the client port of mobile terminal connection is provided, so that user of service is connect data using mobile terminal with operation maintenance personnel
Interaction platform；
Platform also provides for power information acquisition system construction specification, standard, acquisition system operation manual, asks common
Topic abnormality eliminating method related data sorted out, shown, facilitate user to consult, realize knowledge document management, knowledge collect with
Guidance, frequently asked questions function, angularly to be counted according to problem generation area, problem category, submission time, solution time
Summarize, analyze.
In the present embodiment, the communication between monitoring server 1 and data acquisition subsystem 2 is equipped with repeater 3.
In the present embodiment, monitoring server 1 further include: secondary side phase voltage compares to determine module, secondary side phase current ratio
Compared with determination module, power determination module, power factor determination module；
Secondary side phase voltage compares to determine module for each phase voltage data of secondary side and each phase voltage of secondary side are basic
Reference voltage in data is compared, if measuring voltage lower than reference voltage 20% or more, is judged as under-voltage；If measuring electricity
Pressure ratio reference voltage is high by 20% or more, then is judged as superpressure；If voltage is 0, it is judged as decompression；
Secondary side phase current compares to determine module for according to each phase current data of secondary side, calculating current three-phase imbalance
Rate, the condition for meeting (maximum current value-minimum current value)/maximum current value >=30% are then judged as three-phase current unbalance；
If minimum current value is 0, it is judged as defluidization；
Power determination module is used for
When meeting following condition, then it is judged as power exception:
(P2-P3)/P2>=30%
Phase three-wire three:
Three-phase and four-line:
By P1Compared with active power data, biggish value is taken as P2, small value is taken as P3
Wherein, UA, UB, UCFor each phase voltage value, IA, IB, ICFor each phase current values,It is taken as normal value, generally
0.8-0.9,
PreferablyIt is 0.866, that is, takesIt is 30 °；
Power factor determination module is used for
If meeting following condition, it is judged as " power factor is abnormal ":
P: the active power of power information acquisition system acquisition
S: apparent energy, for according to Current Voltage computed information, in which:
Phase three-wire three:
Three-phase and four-line: S1=UAIA+UBIB+UCIC。
In the present embodiment, data acquisition subsystem 2 further include: secondary side current sampling transformation module, A/D conversion module,
Processor, memory, power module；
Power module obtains electric energy from primary side route and uses after transformation, rectification, filtering for whole device；
The electric current that secondary side current sampling transformation module is used to secondary side three-phase current being converted to nominal value as 5A, then
The electric current of 5A is converted to the voltage signal that nominal value is 5V；Voltage signal generates the identical square wave of frequency by zero-crossing comparator；
In favor of frequency measurement and realize pile defection.
A/D conversion module is used to carry out A/D conversion to voltage signal, and the voltage signal after conversion is transferred to processing
Device；
Processor is used to carry out the calculating of electric current and power virtual value using voltage signal as reference voltage u (n),
Calculation formula is as follows:
Wherein i (n) is sampled value, and N is sampling number；
And the result obtained after calculating is stored in memory.
In the present embodiment, data acquisition subsystem 2 further include: the camera of each monitoring area, video processing are set
Module, video transmission module；
Camera is used to absorb the video image in monitoring area；
Video processing module is used to carry out compression encryption to the video image in camera intake monitoring area, and leads to
Video transmission module is crossed by transmission of video images to monitoring server.
In the present embodiment, as shown in Figure 3 and Figure 4, data acquisition subsystem 2 further include: detection device；
The detection device includes: thermistor, and one end of thermistor is connected to two feet of amplifier, other end connection amplification
Three feet of device, two feet of amplifier are connect with one end of the photoisolator of thermistor parallel connection, and the other end connects amplifier
The output end connection of three feet, the power supply VCC1 of four foot connection+5V of amplifier, the 11 foot feet ground connection of amplifier, amplifier is fixed
When device four feet, six feet and two feet of timer are connected between resistance R4 second end and capacitor C1 first end simultaneously, resistance R4
First end connect with resistance R3 second end；Resistance R3 first end is terminated by resistance R2 connection power supply VCC2, capacitor C1 second
Ground, the octal of timer meet power supply VCC3, and the foot ground connection of timer, three feet of timer are the output end of signal, output
Signal connects warning device；
The warning device includes: the Light-emitting diode LED connecting with three feet of timer, Light-emitting diode LED and three
The base stage of pole pipe is connected, and the collector of triode connects power supply VCC4, and emitter connects resistance R5 first end, resistance R5 second end
Ground connection, transistor emitter connect capacitor C2 first end, and capacitor C2 second end is connect with acoustical generator first end, acoustical generator second end
Ground connection.
When thermistor R1 detect human heat to amplifier issue inductive signal, inductive signal by amplifier U2 into
Row amplification, the signal of amplification pass through timer U3, and 4 feet of timer U3 are then high level, and timer is in the work shape of triggering
State.Timer constitutes multivibrator, period of oscillation in external circuit resistance R2, R3, R4 and capacitor C1 it is related.?
Under the action of multi-harmonic-oscillations, three feet of timer U3 then export square-wave signal, under the action of square-wave signal, in warning device
Light emitting diode constantly flash it is bright, square-wave signal pass through triode after acoustical generator sounding alarm.
Light among photoelectrical coupler U1 is blocked, then photoelectrical coupler detects that someone passes through, and generates inductive signal,
Inductive signal amplifies signal by amplifier U2, and the signal of amplification passes through timer U3, and four feet of timer U3 are then high
Level, timer are in the working condition of triggering.
Under the action of multi-harmonic-oscillations, timer exports square-wave signal, under the action of square-wave signal, in warning circuit
Light emitting diode D1 constantly flashes bright, while square-wave signal passes through acoustical generator sounding alarm after triode.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment refer to mutually.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of distribution network metering guard system characterized by comprising monitoring server passes through GPRS with monitoring server
Or the data acquisition subsystem of fiber optic communication connection；
Data acquisition subsystem is used to control electric switch to the electric energy meter in each monitoring area and carry out data acquisition, data acquisition
Subsystem include: data acquisition storage module, electric energy meter data acquisition module, quantity of state acquisition module, pulsed quantity acquisition module,
Ac analog acquisition module, historical data processing module, meter reading day data processing module, history moon data processing module；
Electric energy meter data acquisition module is used for by adopting to electric energy meter data the meter reading day or timing acquisition time interval of setting
Collection, storage, and acquisition electric energy meter data are sent to monitoring server under monitoring server driving；
Quantity of state acquisition module for acquiring low-voltage platform area low tension switch location status in real time, will when low tension switch conjugates
Low tension switch conjugates information storage, and is sent to monitoring server；
Pulsed quantity acquisition module is used to receive the pulse of electric energy meter output, and according to electric energy meter meter constant Kp imp/kWh, TV
No-load voltage ratio KTV, TA no-load voltage ratio KTA calculates mean power per minute, and records the same day, of that month power maximum value and time of occurrence, and
It is sent to monitoring server；
Ac analog acquisition module by requirement predeterminated voltage, electric current, power, power, power factor analog quantity for being adopted
Collection measures voltage, electric current, power, power factor, and has the out-of-limit statistics of voltage monitoring, and voltage class of accuracy is 0.5, tool
There is harmonic data statistics, harmonic component class of accuracy is 1；
The data that historical data processing module is used to acquire in next day zero point history of forming day data, and are protected as unit of day
Nearest data on the 30th are deposited, the guick freezing room according to setting is every forming all kinds of freezing curve numbers with 15min, 30min, 45min, 60min
According to, and the last 30 days curve data is saved, and be sent to monitoring server；
The data that meter reading day data processing module is used to acquire form meter reading day data in the meter reading day of setting and meter reading time,
And nearest 12 meter reading days data are saved, and be sent to monitoring server；
The data that history moon data processing module is used to acquire save nearest in the various history moon data of the end of month Null steering
12 months moon data, and it is sent to monitoring server；
When monitoring server includes: electric energy meter operation conditions monitoring modular, voltage monitoring module, power-factor monitoring module, school
Module, limit value setup module, pre-payment control module, meter reading date period setup module；
Electric energy meter operation conditions monitoring modular is used for the data information that data acquisition subsystem is sent, and monitoring electric energy meter runs shape
Condition, monitoring electric energy meter operation conditions include: that parameters of electric energy meter changes, the electric energy meter time is overproof, electric meter fault information, electric energy indicate
Degree decline, electric energy meter flies away, electric energy meter stops walking, infrared induction record, magnetic induction disturbance records；
Voltage monitoring module is counted for monitoring to Network Voltage Deviation to power grid rate of qualified voltage；
Power-factor monitoring module is used to carry out analysis system to the power factor of monitoring point by the power factor segmentation limit value of setting
Meter, monthly power factor gets over limit value generation in the cumulative time of each section to record；
Instructed when module is used for data acquisition subsystem tranmitting data register school when school, the clock for acquiring data acquisition subsystem with
The crystal oscillator clock of monitoring server is identical；
The voltage and current that limit value setup module is used to be arranged electric energy meter in monitoring area gets over limit value, power factor segmentation limit value；
Pre-payment control module is for being arranged and inquiring prepayment electric expense value, alarm door limit value, trip value pre-payment control ginseng
Number；
Meter reading date period setup module is used to be arranged the meter reading day, meter reading time, meter reading interval, meter reading of data acquisition subsystem
Parameter.
2. distribution network metering guard system according to claim 1, which is characterized in that
Monitoring server further include: power setting module；
Power setting module is used to be arranged the upper limit of the power value of each electricity consumer；
Data acquisition subsystem further include: consumption power is rationed the power supply module；
Consumption power rations the power supply module for monitoring realtime power within the scope of power limit, when electricity consumer consumption power reaches limit value
Power definite value closed loop control function is then executed automatically, executes tripping.
3. distribution network metering guard system according to claim 1, which is characterized in that
Monitoring server further include: electricity statistical module, day electric energy statistical module, quantitative analysis module, transformer monitoring module,
Platform area electrical energy consumption analysis module；
Electricity statistical module is used to generate each electricity consumer electric flux registration curve and calculate total electric flux curve, and in database
In stored, when electric flux registration curve or electric flux curve abnormality, generate relevant alarm event；
The day that day electric energy statistical module is used to generate each electricity consumer and calculates day total electric flux at electric flux indicating value, when electric flux shows
When value or day total electric energy data exception, relevant alarm event is generated；
Quantitative analysis module is used for by carrying out to the voltage of acquisition, electric current, power, power factor, indicating value and switching value information
Analysis generates the real-time working condition of exception information；
Transformer monitoring module is used to monitor the three-phase voltage of transformer, calculates imbalance of three-phase voltage rate, and is associated with specific
Electric current, voltage, the power graph of electricity consumer calculate voltage distortion rate, the degree of voltage waveform distortion according to harmonic data；Electricity
Pressure percent harmonic distortion is the percentage of root-mean-square value and the ratio between the fundamental voltage RMS of each harmonic voltage to indicate:
In formula: α --- voltage harmonic aberration rate；
un(n=2,3 ...) --- nth harmonic voltage effective value, u1--- fundamental voltage RMS,
It is also used to monitor the three phases active power of transformer, calculates three phases active power unbalance factor, and specific use can be associated with
Electric current, voltage, the power graph at electric family；
Platform area electrical energy consumption analysis module calculates every balcony area summary table integral point load and peak load for counting, and counts user under platform area
Electricity consumption calculates the comprehensive electrostrictive coefficient in platform area；Synthesis is whole low-voltage customer meters in transformer peak load/platform area with electrostrictive coefficient
Total load is calculated, provides foundation to the selection of platform area transformer, the selection of platform area low-voltage circuit.
4. distribution network metering guard system according to claim 1, which is characterized in that
Data acquisition subsystem further include: setting is in primary side three-phase electricity current transformer, primary side threephase potential transformer, and two
Secondary side three-phase electricity current transformer, secondary side threephase potential transformer；Primary side three-phase electricity current transformer acquires high pressure in real time
Side three-phase current data are simultaneously transferred to monitoring server；Secondary side three-phase electricity current transformer acquires low-pressure side three-phase current in real time
Data are simultaneously transferred to monitoring server；
Monitoring server further include: line loss analysis module, apparent energy curve generation module, apparent energy contrast module,
Data interaction platform；
Line loss analysis module is used for according to the topological structure of power grid, daily acquires single-phase, three-phase user and Tai under route
The electricity consumption of area's summary table analyzes the active loss of every route by establishing line loss analyzing model in real time, is being more than certain valve
It is alerted after value；
Apparent energy contrast module is used for the primary side three-phase electricity electric current according to real-time Transmission, primary side three-phase voltage, secondary side
Three-phase electricity electric current, secondary side three-phase voltage calculate active power, reactive power, and obtain apparent energy, and apparent energy is made
Curve；
Apparent energy contrast module carries out data comparison and same for comparing primary side power information and secondary side power information
One page iso-surface patch is reflected to first and second side power information of user with the presence or absence of use at two apparent energy curves on a display screen
Electrical anomaly；
Data interaction platform carries out tracking processing for realizing communication is exchanged between user of service and operation maintenance personnel, to system, and
And the client port of mobile terminal connection is provided, so that user of service is connect data interaction using mobile terminal with operation maintenance personnel and puts down
Platform；
Platform also provides for power information acquisition system construction specification, standard, acquisition system operation manual, different to FAQs
Normal processing method related data is sorted out, is shown, user is facilitated to consult, realization knowledge document management, knowledge collection and guidance,
Frequently asked questions function, with according to problem occur area, problem category, submission time, solve time angle carry out statistics summarize, divide
Analysis.
5. distribution network metering guard system according to claim 1, which is characterized in that
Communication between monitoring server and data acquisition subsystem is equipped with repeater.
6. distribution network metering guard system according to claim 1, which is characterized in that
Monitoring server further include: secondary side phase voltage compares to determine module, secondary side phase current compares to determine module, power is sentenced
Cover half block, power factor determination module；
Secondary side phase voltage compares to determine module and is used for each phase voltage data of secondary side and each phase voltage basic data of secondary side
In reference voltage be compared, if measuring voltage lower than reference voltage 20% or more, be judged as under-voltage；If measuring voltage ratio
Reference voltage is high by 20% or more, then is judged as superpressure；If voltage is 0, it is judged as decompression；
Secondary side phase current compares to determine module and is used for according to each phase current data of secondary side, calculating current three-phase imbalance rate,
The condition for meeting (maximum current value-minimum current value)/maximum current value >=30% is then judged as three-phase current unbalance；If most
Low current value is 0, then is judged as defluidization；
Power determination module is used for
When meeting following condition, then it is judged as power exception:
(P2-P3)/P2>=30%
Phase three-wire three:
Three-phase and four-line:
By P1Compared with active power data, biggish value is taken as P2, small value is taken as P3
Wherein, UA, UB, UCFor each phase voltage value, IA, IB, ICFor each phase current values,Value range is 0.8-0.9；
Power factor determination module is used for
If meeting following condition, it is judged as " power factor is abnormal ":
P: the active power of power information acquisition system acquisition
S: apparent energy, for according to Current Voltage computed information, in which:
Phase three-wire three:
Three-phase and four-line: S1=UAIA+UBIB+UCIC。
7. distribution network metering guard system according to claim 4, which is characterized in that
Data acquisition subsystem further include: secondary side current sampling transformation module, A/D conversion module, processor, memory, electricity
Source module；
Power module obtains electric energy from primary side route and uses after transformation, rectification, filtering for whole device；
Secondary side current sampling transformation module is used to being converted to secondary side three-phase current into the electric current that nominal value is 5A, then 5A's
Electric current is converted to the voltage signal that nominal value is 5V；Voltage signal generates the identical square wave of frequency by zero-crossing comparator；With benefit
In frequency measurement and realize pile defection；
A/D conversion module is used to carry out A/D conversion to voltage signal, and the voltage signal after conversion is transferred to processor；
Processor is used to carry out the calculating of electric current and power virtual value using voltage signal as reference voltage u (n),
Calculation formula is as follows:
Wherein i (n) is sampled value, and N is sampling number；
And the result obtained after calculating is stored in memory.
8. distribution network metering guard system according to claim 1, which is characterized in that
Data acquisition subsystem further include: the camera of each monitoring area, video processing module, transmission of video mould are set
Block；
Camera is used to absorb the video image in monitoring area；
Video processing module is used to carry out compression encryption to the video image in camera intake monitoring area, and passes through view
Frequency transmission module is by transmission of video images to monitoring server.
9. distribution network metering guard system according to claim 1, which is characterized in that
Data acquisition subsystem further include: detection device；
The detection device includes: thermistor, and one end of thermistor is connected to two feet of amplifier, and the other end connects amplifier
Three feet connect two feet of amplifier with one end of the photoisolator of thermistor parallel connection, and the other end connects three feet of amplifier,
The power supply VCC1 of four foot connection+5V of amplifier, the 11 foot feet ground connection of amplifier, the output end connection timer of amplifier
Four feet, six feet and two feet of timer are connected between resistance R4 second end and capacitor C1 first end simultaneously, and the first of resistance R4
End is connect with resistance R3 second end；Resistance R3 first end passes through resistance R2 connection power supply VCC2, capacitor C1 second end ground connection, timing
The octal of device meets power supply VCC3, the foot ground connection of timer, and three feet of timer are the output end of signal, the signal connection of output
Warning device；
The warning device includes: the Light-emitting diode LED connecting with three feet of timer, Light-emitting diode LED and triode
Base stage be connected, the collector of triode connects power supply VCC4, and emitter connects resistance R5 first end, and resistance R5 second is terminated
Ground, transistor emitter connect capacitor C2 first end, and capacitor C2 second end is connect with acoustical generator first end, and acoustical generator second terminates
Ground.
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| US11899516B1 (en) | 2023-07-13 | 2024-02-13 | T-Mobile Usa, Inc. | Creation of a digital twin for auto-discovery of hierarchy in power monitoring |
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