CN103969526B - Electric energy quality collecting device and application thereof in electric energy quality comprehensive analysis system - Google Patents
Electric energy quality collecting device and application thereof in electric energy quality comprehensive analysis system Download PDFInfo
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- CN103969526B CN103969526B CN201410175895.2A CN201410175895A CN103969526B CN 103969526 B CN103969526 B CN 103969526B CN 201410175895 A CN201410175895 A CN 201410175895A CN 103969526 B CN103969526 B CN 103969526B
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Abstract
The invention relates to an electric energy quality collecting device and the application of the electric energy quality collecting device in an electric energy quality comprehensive analysis system. The electric energy quality collecting device comprises a power module, a signal input module, a time tick module, a data collection and analysis module, a back plate data bus and an Ethernet port. The electric energy quality comprehensive analysis system is a background manager provided with embedded electric energy quality steady state/transient state synthetic analysis software and receives electric energy quality steady state data and transient state data transmitted by the device in real time to analyze the electric energy quality, and the electric energy quality comprehensive analysis system is high in real-time performance, misses no disturbance events, and can rapidly extract signal envelopes, accurately position transient state characteristics such as the starting time, the duration time and the amplitude of disturbance of the transient state electric energy quality and ensure correctness of extracting transient state information. By applying the synthetic analysis combining the steady state and the transient state of the electric energy quality, the defects that an electric energy quality transient state algorithm is poor in real-time performance and large in calculation quantity can be made up, causes of electric energy quality transient state events can be accurately positioned, and safe and stable operation of an electrical power system and electrical equipment can be ensured.
Description
Technical field
The present invention relates to power quality analysis, more particularly to a kind of quality of power supply harvester and its comprehensive in the quality of power supply
Close the application in analysis system.
Background technology
The power quality problem of existing power system generally comprises the stationary power quality such as harmonic wave problem and voltage dip etc.
Transient power quality problem, the former can damage system equipment, threaten the safe operation of system, or can directly affect even interruption
The normal power supply of user, causes serious economic loss.Improvement to stationary power quality at present, and to transient power quality
The detection of problem and localization method, majority are, based on data analysiss afterwards, only to lay particular emphasis on detection transient power quality problem
Initial time and persistent period, there are many restrictions for Practical, and problem that cannot be profound to the quality of power supply is carried out directly
Connect positioning, it is difficult to assist user to carry out electric energy quality synthesis evaluation, and then formulate rational scheme to improve the quality of power supply.
The content of the invention
A technical problem to be solved by this invention is the defect for making up above-mentioned prior art, there is provided a kind of quality of power supply
Harvester.
Another technical problem to be solved by this invention is the defect for making up above-mentioned prior art, there is provided a kind of electric energy matter
Amount application scheme of the harvester in comprehensive power quality analysis system.
The quality of power supply harvester technical problem of the present invention is solved by the following technical programs.
This quality of power supply harvester, it is installed in monitoring field, defeated with the voltage/current transducer signal of monitoring field
Go out end and external timing signal outfan connection, power quality index include frequency, voltage effective value/deviation, current effective value/
Deviation, voltage/current harmonic wave, voltage/current order components and three-phase imbalance.
The characteristics of this quality of power supply harvester is：
Including the power module to each component parts offer stabilized power source, signal input module, external time service device
Or time service unit pair when the module and data acquisition of module connection and analysis module when described pair, respectively with the signal
Input module, described pair when module and the data acquisition and analysis module connection backboard data/address bus, and with the number
The Ethernet interface with the communication of comprehensive power quality analysis system is connected to according to collection and analysis module, module will be outer when described pair
The synchronizing signal for connecing time service device or time service unit is converted to external timing signal, to the data acquisition and analysis module and
The signal input module is provided as target unified synchronised clock during accurate sampled point, to guarantee the data acquisition and divide
The high accuracy of analysis module collection, and the quality of power supply steady state data and Temporal Data of collection are sent in real time by electricity by Ethernet interface
Energy quality comprehensive analysis system, realizes definite value configuration, quality of power supply file management, shows real-time waveform data and quality of power supply reality
When monitoring, data derive and print, and power quality analysis, the quality of power supply steady state data is to include that voltage, electric current have
The result of calculation of the Steady-state Parameters of valid value and frequency, the Power Quality Transient Disturbance are that transient disturbance starts the original number for judging
According to.
The quality of power supply harvester technical problem of the present invention is solved by technical scheme further below.
When described pair, module includes field-programmable logic gate array (the Field Programmable for parsing control
Gate Array, initialism are FPGA), pair when CPU and constant-temperature crystal oscillator (Oven Controlled Crystal
Oscillator, initialism are OCXO), when described pair module by FPGA to external time service device or time service unit
1PPS, target range instrument group (Inter-Range Instrumentation Group, initialism is IRIG)-B signal are solved
Analysis, generates high-precision clock signal, when outside satellite-signal disappears, is accurately kept time by OCXO, it is ensured that time signal
Correctness, after satellite-signal recovers, then mode when automatically switching to external synchronization clock pair, the external time service device or
Time service unit is BEI-DOU position system clock, (Global Positioning System, initialism is global positioning system
GPS) one kind in clock.
The data acquisition and analysis module, in data acquisition and pretreatment module and data analysis module is provided with
Central processor unit (Central Processing Unit, initialism is CPU), and flash memory (Compact Flash, breviary
Word is CF) device and network interface, the data acquisition and pretreatment module are used for the real-time of synchronous acquisition plurality of voltages/current channel
The high-precision clock signal that module is generated when data, reception pair, beats markers to sampled point, and the CF devices are CF cards, described
CF cards for store CPU element data analysis module generate quality of power supply steady trend file and transient state recorded wave file.
The data acquisition and pretreatment module, on the one hand from backboard data/address bus read target when having beaten in real time and adopt
Plurality of voltages/the current sampling data of sampling point, according to the stable state sent by Ethernet interface by comprehensive power quality analysis system
Definite value configures content, and the voltage/current sampled data of accumulation certain hour persistently calculates quality of power supply steady state data, and by pre-
Quality of power supply steady state data is preserved by the data type of definition, and result of calculation is sent data by backboard data/address bus
Analysis module is further processed；On the other hand matched somebody with somebody according to the transient disturbance definite value sent by comprehensive power quality analysis system
Content is put, transient disturbance is carried out to real-time sampling initial data and is started judgement, it is if meeting transient disturbance entry condition, described real-time
Sample source data is Power Quality Transient Disturbance, and protects Power Quality Transient Disturbance by predefined data type
Deposit, and initial data transmission data analysis module is further processed by backboard data/address bus.
The data analysis module receive respectively the quality of power supply steady state data of the data acquisition and pretreatment module and
Power Quality Transient Disturbance.
The quality of power supply steady state data of reception is carried out secondary calculating by the data analysis module, counts what secondary calculating went out
Quality of power supply steady trend data, automatically generate the steady trend file for meeting predefined structure, store in CF cards, and will be corresponding
Data sent back-stage management machine in the comprehensive power quality analysis system by Ethernet interface, be stored in back-stage management machine
Hard disk, the secondary calculating include calculating power, power factor and electric energy, wherein power include active power, reactive power and
Apparent energy.
Time labelling and data characteristicses of the data analysis module always according to Temporal Data, will be the quality of power supply for receiving temporary
State data carry out transient disturbance intelligent decision, and the transient disturbance intelligent decision is using various transient power quality analysis methods
The effectiveness of analysis noisy data, to effective transient disturbance data, rapid extraction transient power quality information, analysis transient state are disturbed
Dynamic initial time, persistent period and disturbance amplitude, classify to transient disturbance event, by above-mentioned transient information analysis result
The transient state recorded wave file of predefined structure is automatically generated, is stored in CF cards, and corresponding data are sent into described by Ethernet interface
Back-stage management machine in comprehensive power quality analysis system, is stored in the hard disk of back-stage management machine, the transient power quality point
Analysis method includes Fast Wavelet analysis method, S-transformation analysis method, and time-domain difference analysis method.
Transient disturbance is also started the initial data for judging by Ethernet interface and directly transmits electricity by the data analysis module
Can quality comprehensive analysis system.
Time period and circuit name that the data analysis module is selected always according to user, to voltage deviation, frequency departure, three
Mutually imbalance, harmonic wave, voltage fluctuation and flicker are counted, and generate corresponding quality of power supply stable state statistical report.
The data analysis module also carries out off-line analysiss to each transient state recorded wave file, and generates corresponding electric energy matter
Amount transient analysis report.
The signal input module, including the plurality of voltages/current input circuit, isolation conversion and filtered electrical that connect step by step
Road, voltage/current signals sampling hold circuit and analog to digital (Analog-Digital, initialism are A-D) sample circuit,
The signal of the threephase potential transformer and threephase current transformer of monitoring field is accessed the multichannel by the signal input module
Voltage/current examines input circuit, receives the three-phase voltage and three-phase current of monitoring point, is entered by the isolation conversion and filter circuit
Row isolation conversion with filtering, then by the sampling switch of the voltage/current signals sampling hold circuit take multichannel current voltage/
Current channel analogue signal, and current voltage/current channel analogue signal is kept, finally by the A-D sample circuits
Plurality of voltages/current channel analogue signal is converted to into plurality of voltages/current channel digital signal and is collected, by backboard data
Bus sends data acquisition to and analysis module is processed.
The application technology problem of the quality of power supply harvester in comprehensive power quality analysis system of the present invention by with
Lower technical scheme is solved.
The characteristics of application of this quality of power supply harvester in comprehensive power quality analysis system is：
After the comprehensive power quality analysis system is provided with embedded power quality stable state/transient state Comprehensive Analysis Software
Platform supervisor, is connected with the quality of power supply harvester by Ethernet interface, is received the quality of power supply harvester and is passed in real time
The quality of power supply steady state data for sending and Temporal Data, realize definite value configuration, quality of power supply file management, show real-time waveform data
Derive and print with electric energy quality real-time monitoring, data, and power quality analysis, the quality of power supply steady state data is to include
The result of calculation of the Steady-state Parameters of voltage, current effective value and frequency, the Power Quality Transient Disturbance are that transient disturbance starts
The initial data of judgement.
The application technology problem of the quality of power supply harvester in comprehensive power quality analysis system of the present invention by with
Further technical scheme is solved down.
The back-stage management machine is the one kind in PC and industrial computer.
Definite value configuration, is to look at, arranges and sends that quality of power supply stable state is out-of-limit and transient disturbance definite value.
The quality of power supply file management, be by the quality of power supply harvester in real time the steady trend file of transmission and
Transient state recorded wave file, is stored in the hard disk of back-stage management machine.
The displaying real-time waveform data and electric energy quality real-time monitoring, are the voltage current waveform data to access device
And quality of power supply steady state data carries out showing in real time and refreshing in real time.
The data are derived and are printed, and are to derive and print quality of power supply steady state data and Power Quality Transient Disturbance.
The power quality analysis include quality of power supply stable state statistics, read steady trend file, read transient state record ripple and electric energy
Quality transient analysis, and comprehensive power quality analysis.
The quality of power supply stable state statistics, is the time period and circuit name selected according to user, inclined to voltage deviation, frequency
Difference, three-phase imbalance, harmonic wave, voltage fluctuation and flicker are counted, and generate corresponding quality of power supply stable state statistical report.
The reading steady trend file, is the time period and multiple Steady-state Parameters indexs selected according to user, analyzes each
The variation tendency of quality of power supply Steady-state Parameters and every impact of the Steady-state Parameters to transient event, and generate the corresponding quality of power supply
Steady trend analysis report.
The reading transient state record ripple and Power Quality Transient analysis, are the Power Quality Transient recorded wave files selected according to user
And unified time labelling, transfer automatically transient event and quality of power supply steady state data for the previous period, transient event occur
Power Quality Transient recorded wave file during generation and after transient event generation, and each transient state recorded wave file is carried out offline
Analysis, and generate corresponding Power Quality Transient analysis report.
Comprehensive power quality analysis, be the Power Quality Transient recorded wave file that selected according to user and it is unified when
Between labelling, transfer automatically transient event occur for the previous period, transient event occur when and transient event occur after electric energy
Quality steady state data, analyzes the variation tendency of each quality of power supply Steady-state Parameters and every shadow of the Steady-state Parameters to transient event
Ring, it is determined that weight ratio of every Steady-state Parameters on transient state transient event probability is caused, is accurately positioned Power Quality Transient thing
Part reason, and generate corresponding comprehensive power quality analysis report.
The application technology problem of the quality of power supply harvester in comprehensive power quality analysis system of the present invention by with
Under further technical scheme solved.
Application of the quality of power supply harvester in comprehensive power quality analysis system, has below step successively：
1) input signal A-D conversion
Quality of power supply harvester is arranged on into monitoring field, the signal input module of quality of power supply harvester will be monitored
The signal of the threephase potential transformer and threephase current transformer at scene accesses the plurality of voltages/electric current inspection input circuit, connects
The multichannel three-phase voltage and three-phase current of measuring point is taken into custody, isolation conversion and filtering is carried out by the isolation conversion and filter circuit,
Multichannel current voltage/current channel analogue signal is taken by the sampling switch of the voltage/current signals sampling hold circuit again,
And current voltage/current channel analogue signal is kept, finally plurality of voltages/electric current is led to by the A-D sample circuits
Road analogue signal is converted to plurality of voltages/current channel digital signal and collects, and sends data to by backboard data/address bus and adopts
Collection and analysis module are processed；
2) sampled point beats markers
Quality of power supply harvester pair when module by FPGA to the 1PPS of external time service device or time service unit,
IRIG-B signals are parsed, and are generated high-precision external timing signal, are beaten markers to sampled point；
3) preliminary stable parameter calculation
Data acquisition and pretreatment module in the data acquisition of quality of power supply harvester and analysis module, from backboard number
According to the plurality of voltages/current sampling data of target sampled point when reading has been beaten in real time in bus, according to by comprehensive power quality
Analysis system configures content by the stable state definite value that Ethernet interface sends, and the voltage/current sampled data of accumulation certain hour is held
It is continuous to calculate quality of power supply steady state data, and quality of power supply steady state data is preserved by predefined data type, and pass through
Result of calculation transmission data analysis module is further processed by backboard data/address bus；
4) transient disturbance judges
Data acquisition and pretreatment module in the data acquisition of quality of power supply harvester and processing module, according to by electricity
The transient disturbance definite value configuration content that energy quality comprehensive analysis system sends, carries out transient disturbance to real-time sampling initial data and opens
Dynamic to judge, if meeting transient disturbance entry condition, the real-time sampling initial data is Power Quality Transient Disturbance, and by pre-
Power Quality Transient Disturbance is preserved by the data type of definition, and initial data is sent data by backboard data/address bus
Analysis module is further processed；
5) steady trend data are calculated
Data analysis module in the data acquisition of quality of power supply harvester and processing module receives the data acquisition
And the quality of power supply steady state data of pretreatment module, the quality of power supply steady state data of reception is carried out into secondary calculating, is counted secondary
The quality of power supply steady trend data for calculating, automatically generate the steady trend file for meeting predefined structure, store in CF cards,
And corresponding data are sent the back-stage management machine in the comprehensive power quality analysis system by Ethernet interface, it is stored in backstage
The hard disk of supervisor, the secondary calculating include calculating power, power factor and electric energy, and wherein power includes active power, nothing
Work(power and apparent energy；
6) transient power quality judges
Data analysis module in the data acquisition of quality of power supply harvester and processing module receives the data acquisition
And the Power Quality Transient Disturbance of pretreatment module, according to time labelling and the data characteristicses of Temporal Data, the electric energy that will be received
Quality Temporal Data carries out transient disturbance intelligent decision, and the transient disturbance intelligent decision is analyzed using various transient power qualities
Method, analyzes the effectiveness of noisy data, to effective transient disturbance data, rapid extraction transient power quality information, analysis
The initial time of transient disturbance, persistent period, disturbance amplitude, classify to transient disturbance event, by above-mentioned transient information point
Analysis result automatically generates the transient state recorded wave file of predefined structure, stores in CF cards, and corresponding data are sent out by Ethernet interface
The back-stage management machine in the comprehensive power quality analysis system is sent, the hard disk of back-stage management machine, the transient power is stored in
Mass analysis method includes Fast Wavelet analysis method, S-transformation analysis method and time-domain difference analysis method；
7) quality of power supply stable state statistical report and Power Quality Transient analysis report are generated
Data analysis module in the data acquisition of quality of power supply harvester and processing module according to user select when
Between section and circuit name, voltage deviation, frequency departure, three-phase imbalance, harmonic wave, voltage fluctuation and flicker are counted, and raw
Into corresponding quality of power supply stable state statistical report, off-line analysiss are also carried out to each transient state recorded wave file, and is generated corresponding
Power Quality Transient analysis report；
8) the comprehensive analysis quality of power supply
The Power Quality Transient recorded wave file selected according to user and unified time labelling, transfer transient event automatically
Occur for the previous period, transient event occur when and transient event occur after quality of power supply steady state data, analyze each electricity
The variation tendency of energy quality Steady-state Parameters and every impact of the Steady-state Parameters to transient event, determine its weight ratio, are accurately positioned
Power Quality Transient business reasons, and corresponding comprehensive power quality analysis report is generated, check, arrange and send the quality of power supply
Stable state is out-of-limit and transient disturbance definite value, the interface of real-time exhibition power quality data, and derives and print quality of power supply stable state
And Temporal Data.
Compared with the prior art, the invention has the advantages that：
The quality of power supply harvester of the present invention based on accurately sampled point markers, Real-time Collection Power Quality Transient and steady
State data, real-time are high, do not miss any disturbance event, are capable of the envelope of rapid extraction signal, position transient power exactly
The transient characteristics such as the initial time of quality disturbance generation, persistent period, disturbance amplitude, it is ensured that the correctness that transient information is extracted,
The comprehensive analysis application that Power Quality Transient and equilibrium transport are combined, can make up Power Quality Transient algorithm poor real and
Computationally intensive defect, is accurately positioned Power Quality Transient business reasons, facilitates user to search failure, and formulation meets actual electricity
Energy quality controlling scheme, ensures the safe and stable operation of power system and equipment.Present invention can be widely used to various electric energy matter
Amount and other relevant data acquisitions and analysis occasion.
Description of the drawings
Fig. 1 is the compositional block diagram of the quality of power supply harvester of the specific embodiment of the invention；
Fig. 2 is application schematic diagram of the specific embodiment of the invention in comprehensive power quality analysis system.
Specific embodiment
With reference to specific embodiment and compare accompanying drawing the present invention will be described.
A kind of quality of power supply harvester as shown in Fig. 1～2, installed in monitoring field, the voltage/electricity with monitoring field
Current transformer signal output part and the connection of external timing signal outfan, power quality index include frequency, voltage effective value/partially
Difference, current effective value/deviation, voltage/current harmonic wave, voltage/current order components and three-phase imbalance.
The quality of power supply harvester of this specific embodiment, including the electricity for providing stabilized power source to each component parts
Source module, signal input module, external time service device or time service unit pair when module and pair when module connection data adopt
Collection and analysis module, respectively with signal input module, pair when the backboard data that are connected of module and data acquisition and analysis module it is total
Line, and with data acquisition and analysis module be connected to comprehensive power quality analysis system communication Ethernet interface, pair when
The synchronizing signal of external time service device or time service unit is converted to external timing signal by module, to data acquisition and analysis mould
Block and signal input module are provided as target unified synchronised clock during accurate sampled point, to guarantee data acquisition and analysis mould
The high accuracy of block collection, and the quality of power supply steady state data and Temporal Data of collection are sent in real time by electric energy matter by Ethernet interface
Amount overall analysis system, realizes definite value configuration, quality of power supply file management, shows that real-time waveform data and the quality of power supply are supervised in real time
Survey, data are derived and printed, and power quality analysis, quality of power supply steady state data is to include voltage, current effective value and frequency
The result of calculation of the Steady-state Parameters of rate, Power Quality Transient Disturbance are that transient disturbance starts the initial data for judging.
Pair when module include for parse control field-programmable logic gate array FPGA, pair when CPU and constant temperature crystal
Agitator OCXO, pair when module pass through 1PPS, target range instrument group IRIG-B of the FPGA to external time service device or time service unit
Signal is parsed, and is generated high-precision clock signal, when outside satellite-signal disappears, is accurately kept time by OCXO, is protected
The correctness of card time signal, after satellite-signal recovers, then mode when automatically switching to external synchronization clock pair, external time service list
Unit is global position system GPS clock.
Data acquisition and analysis module, including the centre for being provided with data acquisition and pretreatment module and data analysis module
Reason device unit CPU, and flash memory CF devices and network interface, data acquisition and pretreatment module are used for synchronous acquisition plurality of voltages/electricity
The high-precision clock signal that module is generated when the real time data of circulation road, reception pair, beats markers to sampled point, and CF devices are CF
Card, for storing quality of power supply steady trend file and the transient state recorded wave file that the data analysis module of CPU element is generated.
Data acquisition and pretreatment module, target sampled point when on the one hand reading has been beaten in real time from backboard data/address bus
Plurality of voltages/current sampling data, according to the stable state definite value sent by Ethernet interface by comprehensive power quality analysis system
Configuration content, the voltage/current sampled data of accumulation certain hour persistently calculate quality of power supply steady state data, and by predefined
Data type quality of power supply steady state data is preserved, and result of calculation is sent by data analysiss by backboard data/address bus
Module is further processed；On the other hand according in the transient disturbance definite value configuration sent by comprehensive power quality analysis system
Hold, carry out transient disturbance to real-time sampling initial data and start judgement, if meeting transient disturbance entry condition, real-time sampling is original
Data are Power Quality Transient Disturbance, and preserve Power Quality Transient Disturbance by predefined data type, and logical
Cross backboard data/address bus to be further processed initial data transmission data analysis module.
Data analysis module difference receiving data collection and quality of power supply steady state data and the quality of power supply of pretreatment module
The quality of power supply steady state data of reception is carried out secondary calculating by Temporal Data, and the quality of power supply stable state that statistics secondary calculating goes out becomes
Gesture data, automatically generate the steady trend file for meeting predefined structure, store in CF cards, and by corresponding data by Ethernet
Mouth sends the back-stage management machine in comprehensive power quality analysis system, is stored in the hard disk of back-stage management machine, and secondary calculating includes
Power, power factor and electric energy is calculated, wherein power includes active power, reactive power and apparent energy；Data analysis module
The Power Quality Transient Disturbance of reception is carried out transient disturbance and is intelligently sentenced by the time labelling and data characteristicses always according to Temporal Data
Disconnected, transient disturbance intelligent decision is the effectiveness using various transient power quality analytical noisy datas, to effective
Transient disturbance data, rapid extraction transient power quality information analyzes the initial time of transient disturbance, persistent period and disturbance
Amplitude, classifies to transient disturbance event, and above-mentioned transient information analysis result is automatically generated the transient state record of predefined structure
Ripple file, stores in CF cards, and corresponding data are sent the backstage pipe in comprehensive power quality analysis system by Ethernet interface
Reason machine, is stored in the hard disk of back-stage management machine, and transient power quality analysis method includes Fast Wavelet analysis method, S-transformation point
Analysis method, and time-domain difference analysis method.
Transient disturbance is also started the initial data for judging by Ethernet interface and directly transmits electric energy matter by data analysis module
Amount overall analysis system；
Time period and circuit name that data analysis module is selected always according to user, to voltage deviation, frequency departure, three-phase not
Balance, harmonic wave, voltage fluctuation and flicker are counted, and generate corresponding quality of power supply stable state statistical report；
Data analysis module also carries out off-line analysiss to each transient state recorded wave file, and it is temporary to generate the corresponding quality of power supply
State analysis report.
Signal input module, including connect step by step plurality of voltages/current input circuit, isolation conversion and filter circuit,
Voltage/current signals sampling hold circuit and analog to digital A-D sample circuits, signal input module is by the three-phase of monitoring field
The signal of voltage transformer and threephase current transformer accesses plurality of voltages/electric current inspection input circuit, receives the three-phase of monitoring point
Voltage and three-phase current, carry out isolation conversion and filtering by isolation conversion and filter circuit, then are protected by voltage/current signals sampling
The sampling switch for holding circuit takes multichannel current voltage/current channel analogue signal, and to current voltage/current channel simulation letter
Number kept, plurality of voltages/current channel analogue signal is converted to into plurality of voltages/electric current by A-D sample circuits finally and is led to
Road digital signal simultaneously collects, and sends data acquisition to by backboard data/address bus and analysis module is processed.
Using the comprehensive power quality analysis system of the quality of power supply harvester of this specific embodiment, it is provided with being embedded in
Back-stage management machine-the PC of formula quality of power supply stable state/transient state Comprehensive Analysis Software, by Ethernet interface and quality of power supply harvester
Connection, receives the quality of power supply steady state data and Temporal Data of the transmission in real time of quality of power supply harvester, realizes definite value configuration, electricity
Energy quality document management, displaying real-time waveform data and electric energy quality real-time monitoring, data are derived and are printed, and the quality of power supply
Analysis, quality of power supply steady state data is the result of calculation of the Steady-state Parameters for including voltage, current effective value and frequency, the quality of power supply
Temporal Data is that transient disturbance starts the initial data for judging.
Definite value is configured, and is to look at, arranges and sends that quality of power supply stable state is out-of-limit and transient disturbance definite value；
Quality of power supply file management, is the steady trend file and transient state for transmitting the quality of power supply harvester in real time
Recorded wave file, is stored in the hard disk of back-stage management machine；
Show real-time waveform data and electric energy quality real-time monitoring, be the voltage current waveform data to access device and electricity
Energy quality steady state data carries out showing in real time and refreshing in real time；
Data are derived and are printed, and are to derive and print quality of power supply steady state data and Power Quality Transient Disturbance；
Power quality analysis include quality of power supply stable state statistics, read steady trend file, read transient state record ripple and the quality of power supply
Transient analysis, and comprehensive power quality analysis；
The quality of power supply stable state statistics, is the time period and circuit name selected according to user, inclined to voltage deviation, frequency
Difference, three-phase imbalance, harmonic wave, voltage fluctuation and flicker are counted, and generate corresponding quality of power supply stable state statistical report；
Read steady trend file, be the time period and multiple Steady-state Parameters indexs selected according to user, analyze each electric energy
The variation tendency of quality Steady-state Parameters and every impact of the Steady-state Parameters to transient event, and generate corresponding quality of power supply stable state
Trend analysiss are reported；
Read transient state record ripple and Power Quality Transient analysis, be according to user select Power Quality Transient recorded wave file and
Unified time labelling, transfers automatically transient event quality of power supply steady state data for the previous period, transient event occurs and occur
When and transient event occur after Power Quality Transient recorded wave file, and each transient state recorded wave file is divided offline
Analysis, and generate corresponding Power Quality Transient analysis report；
Comprehensive power quality is analyzed, and is the Power Quality Transient recorded wave file and unified time mark selected according to user
Note, transfer automatically transient event occur for the previous period, transient event occur when and transient event occur after the quality of power supply
Steady state data, analyzes the variation tendency of each quality of power supply Steady-state Parameters and every impact of the Steady-state Parameters to transient event, really
Weight ratio of the fixed items Steady-state Parameters on transient state transient event probability is caused, is accurately positioned Power Quality Transient event former
Cause, and generate corresponding comprehensive power quality analysis report.
Application of the quality of power supply harvester of this specific embodiment in comprehensive power quality analysis system, has successively
Below step：
1) input signal A-D conversion
Quality of power supply harvester is arranged on into monitoring field, the signal input module of quality of power supply harvester will be monitored
The signal of the threephase potential transformer and threephase current transformer at scene accesses plurality of voltages/electric current inspection input circuit, receives prison
The multichannel three-phase voltage of measuring point and three-phase current, by isolation conversion and filter circuit carry out isolation conversion with filtering, then by voltage/
The sampling switch of current signal sampling hold circuit takes multichannel current voltage/current channel analogue signal, and to current voltage/
Current channel analogue signal is kept, and is finally converted to plurality of voltages/current channel analogue signal by A-D sample circuits many
Road voltage/current channel digital signal simultaneously collects, and is sent at data acquisition and analysis module by backboard data/address bus
Reason；
2) sampled point beats markers
Quality of power supply harvester pair when module by FPGA to external time service unit-global position system GPS clock
1PPS, IRIG-B signal parsed, generate high-precision external timing signal, markers beaten to sampled point；
3) preliminary stable parameter calculation
Data acquisition and pretreatment module in the data acquisition of quality of power supply harvester and analysis module, from backboard number
According to the plurality of voltages/current sampling data of target sampled point when reading has been beaten in real time in bus, according to by comprehensive power quality
Analysis system configures content by the stable state definite value that Ethernet interface sends, and the voltage/current sampled data of accumulation certain hour is held
It is continuous to calculate quality of power supply steady state data, and quality of power supply steady state data is preserved by predefined data type, and pass through
Result of calculation transmission data analysis module is further processed by backboard data/address bus；
4) transient disturbance judges
Data acquisition and pretreatment module in the data acquisition of quality of power supply harvester and processing module, according to by electricity
The transient disturbance definite value configuration content that energy quality comprehensive analysis system sends, carries out transient disturbance to real-time sampling initial data and opens
Dynamic to judge, if meeting transient disturbance entry condition, real-time sampling initial data is Power Quality Transient Disturbance, and by predefined
Data type Power Quality Transient Disturbance is preserved, and by backboard data/address bus by transient disturbance start judge original
Beginning data is activation data analysis module is further processed；
5) steady trend data are calculated
Data analysis module receiving data in the data acquisition of quality of power supply harvester and processing module is gathered and pre-
The quality of power supply steady state data of reception is carried out secondary calculating by the quality of power supply steady state data of processing module, counts secondary calculating
The quality of power supply steady trend data for going out, automatically generate the steady trend file for meeting predefined structure, store in CF cards, and will
Corresponding data are sent the back-stage management machine in the comprehensive power quality analysis system by Ethernet interface, are stored in back-stage management
The hard disk of machine, secondary calculating include calculating power, power factor and electric energy, wherein power include active power, reactive power and
Apparent energy；
6) transient power quality judges
Data analysis module in the data acquisition of quality of power supply harvester and processing module receives the data acquisition
And the Power Quality Transient Disturbance of pretreatment module, according to time labelling and the data characteristicses of Temporal Data, the electric energy that will be received
Quality Temporal Data carries out transient disturbance intelligent decision, and transient disturbance intelligent decision adopts various transient power quality analysis sides
Method, analyzes the effectiveness of noisy data, and to effective transient disturbance data, rapid extraction transient power quality information, analysis are temporary
The initial time of state disturbance, persistent period, disturbance amplitude, classify to transient disturbance event, above-mentioned transient information are analyzed
As a result the transient state recorded wave file of predefined structure is automatically generated, is stored in CF cards, and corresponding data are sent by Ethernet interface
Back-stage management machine in comprehensive power quality analysis system, is stored in the hard disk of back-stage management machine, transient power quality analysis side
Method includes Fast Wavelet analysis method, S-transformation analysis method and time-domain difference analysis method；
7) quality of power supply stable state statistical report and Power Quality Transient analysis report are generated
Data analysis module in the data acquisition of quality of power supply harvester and processing module according to user select when
Between section and circuit name, voltage deviation, frequency departure, three-phase imbalance, harmonic wave, voltage fluctuation and flicker are counted, and raw
Into corresponding quality of power supply stable state statistical report, off-line analysiss are also carried out to each transient state recorded wave file, and is generated corresponding
Power Quality Transient analysis report；
8) the comprehensive analysis quality of power supply
The Power Quality Transient recorded wave file selected according to user and unified time labelling, transfer transient event automatically
Occur for the previous period, transient event occur when and transient event occur after quality of power supply steady state data, analyze each electricity
The variation tendency of energy quality Steady-state Parameters and every impact of the Steady-state Parameters to transient event, determine its weight ratio, are accurately positioned
Power Quality Transient business reasons, and corresponding comprehensive power quality analysis report is generated, check, arrange and send the quality of power supply
Stable state is out-of-limit and transient disturbance definite value, the interface of real-time exhibition power quality data, and derives and print quality of power supply stable state
And Temporal Data.
Above content is with reference to specific preferred implementation further description made for the present invention, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
Some equivalent substitutes or obvious modification is made on the premise of without departing from present inventive concept, and performance or purposes are identical, all should
It is considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (4)
1. a kind of quality of power supply harvester, installed in monitoring field, defeated with the potential and current transformers signal of monitoring field
Go out end and the connection of external timing signal outfan, power quality index includes frequency, voltage effective value and deviation, current effective value
And deviation, voltage and current harmonic wave, voltage and current order components and three-phase imbalance, it is characterised in that：
Including the power module from stabilized power source to each component parts, signal input module, external time service device or the time service that provide
Unit pair when the module and data acquisition of module connection and analysis module when described pair, respectively with the signal input module,
The backboard data/address bus of module and the data acquisition and analysis module connection when described pair, and with the data acquisition and point
Analysis module is connected to the Ethernet interface with the communication of comprehensive power quality analysis system, and when described pair, module is by external time service device
It is or the synchronizing signal of time service unit is converted to external timing signal, defeated to the data acquisition and analysis module and the signal
Enter module to provide as target unified synchronised clock during accurate sampled point, to guarantee the data acquisition and analysis module collection
High accuracy, and the quality of power supply steady state data and Temporal Data of collection are sent in real time by comprehensive power quality by Ethernet interface
Analysis system, realizes definite value configuration, quality of power supply file management, shows real-time waveform data and electric energy quality real-time monitoring, number
According to deriving and printing, and power quality analysis, the quality of power supply steady state data is to include voltage, current effective value and frequency
Steady-state Parameters result of calculation, the Power Quality Transient Disturbance be transient disturbance start judge initial data；
When described pair module include for parse control field-programmable logic gate array FPGA, pair when CPU and constant temperature crystal
Agitator OCXO, when described pair, module passes through 1PPS, target range instrument group of the FPGA to external time service device or time service unit
IRIG-B signals are parsed, and are generated high-precision clock signal, when outside satellite-signal disappears, are accurately kept by OCXO
When, it is ensured that the correctness of time signal, after satellite-signal recovers, then mode when automatically switching to external synchronization clock pair, it is described
External time service device or time service unit are BEI-DOU position system clocks, the one kind in global position system GPS clock；
The data acquisition and analysis module, including the centre for being provided with data acquisition and pretreatment module and data analysis module
Reason device unit CPU, flash memory CF devices and network interface, the data acquisition and pretreatment module are used for synchronous acquisition plurality of voltages and electricity
The high-precision clock signal that module is generated when the real time data of circulation road, reception pair, plays markers, the CF devices to sampled point
For CF cards, the CF cards are for storing the quality of power supply steady trend file and transient state that the data analysis module of CPU element is generated
Recorded wave file；
The data analysis module receives the quality of power supply steady state data and electric energy of the data acquisition and pretreatment module respectively
Quality Temporal Data；
The quality of power supply steady state data of reception is carried out secondary calculating by the data analysis module, counts the electric energy that secondary calculating goes out
Quality steady trend data, automatically generate the steady trend file for meeting predefined structure, store in CF cards, and will count accordingly
According to the back-stage management machine sent by Ethernet interface in the comprehensive power quality analysis system, the hard of back-stage management machine is stored in
Disk, the secondary calculating include calculating power, power factor and electric energy, and wherein power includes active power, reactive power and regards
In power；
Time labelling and data characteristicses of the data analysis module always according to Temporal Data, the Power Quality Transient number that will be received
According to transient disturbance intelligent decision is carried out, the transient disturbance intelligent decision is using various transient power quality analyticals
The effectiveness of noisy data, to effective transient disturbance data, rapid extraction transient power quality information, analyzes transient disturbance
Initial time, persistent period and disturbance amplitude, classify to transient disturbance event, will be above-mentioned transient information analysis result automatic
The transient state recorded wave file of predefined structure is generated, is stored in CF cards, and corresponding data is sent into the electric energy by Ethernet interface
Back-stage management machine in quality comprehensive analysis system, is stored in the hard disk of back-stage management machine, the transient power quality analysis side
Method includes Fast Wavelet analysis method, S-transformation analysis method, and time-domain difference analysis method.
2. quality of power supply harvester as claimed in claim 1, it is characterised in that：
Transient disturbance is also started the initial data for judging by Ethernet interface and directly transmits electric energy matter by the data analysis module
Amount overall analysis system；
Time period and circuit name that the data analysis module is selected always according to user, to voltage deviation, frequency departure, three-phase not
Balance, harmonic wave, voltage fluctuation and flicker are counted, and generate corresponding quality of power supply stable state statistical report；
The data analysis module also carries out off-line analysiss to each transient state recorded wave file, and it is temporary to generate the corresponding quality of power supply
State analysis report.
3. quality of power supply harvester as claimed in claim 1, it is characterised in that：
The signal input module, including connect step by step plurality of voltages and current input circuit, isolation conversion and filter circuit,
Voltage and current signal sampling hold circuit and A-D sample circuits, the signal input module is by the three-phase voltage of monitoring field
The signal of transformer and threephase current transformer accesses the plurality of voltages and electric current inspection input circuit, receives the three-phase of monitoring point
Voltage and three-phase current, carry out isolation conversion and filtering by the isolation conversion and filter circuit, then by the voltage and current
The sampling switch of signal sampling hold circuit takes multichannel current voltage and current channel analogue signal, and to current voltage and
Current channel analogue signal is kept, and is finally turned plurality of voltages and current channel analogue signal by the A-D sample circuits
It is changed to plurality of voltages and current channel digital signal and collects, data acquisition and analysis module is sent to by backboard data/address bus
Processed.
4. application of the quality of power supply harvester as claimed in claim 3 in comprehensive power quality analysis system, the electricity
Can quality comprehensive analysis system be provided with the back-stage management machine of embedded power quality stable state/transient state Comprehensive Analysis Software, by with
Too network interface is connected with the quality of power supply harvester, and the quality of power supply for receiving quality of power supply harvester transmission in real time is steady
State data and Temporal Data, realize definite value configuration, quality of power supply file management, show that real-time waveform data and the quality of power supply are real-time
Monitoring, data are derived and are printed, and power quality analysis, and the quality of power supply steady state data is to include that voltage, electric current are effective
The result of calculation of the Steady-state Parameters of value and frequency, the Power Quality Transient Disturbance are that transient disturbance starts the original number for judging
According to；
The back-stage management machine is the one kind in PC and industrial computer；
Definite value configuration, is to look at, arranges and sends that quality of power supply stable state is out-of-limit and transient disturbance definite value；
The quality of power supply file management, is the steady trend file and transient state for transmitting the quality of power supply harvester in real time
Recorded wave file, is stored in the hard disk of back-stage management machine；
The displaying real-time waveform data and electric energy quality real-time monitoring, are the voltage current waveform data to access device and electricity
Energy quality steady state data carries out showing in real time and refreshing in real time；
The data are derived and are printed, and are to derive and print quality of power supply steady state data and Power Quality Transient Disturbance；
The power quality analysis include quality of power supply stable state statistics, read steady trend file, read transient state record ripple and the quality of power supply
Transient analysis, and comprehensive power quality analysis；
Quality of power supply stable state statistics, is the time period and circuit name selected according to user, to voltage deviation, frequency departure,
Three-phase imbalance, harmonic wave, voltage fluctuation and flicker are counted, and generate corresponding quality of power supply stable state statistical report；
The reading steady trend file, is the time period and multiple Steady-state Parameters indexs selected according to user, analyzes each electric energy
The variation tendency of quality Steady-state Parameters and every impact of the Steady-state Parameters to transient event, and generate corresponding quality of power supply stable state
Trend analysiss are reported；
It is described reading transient state record ripple and Power Quality Transient analysis, be according to user select Power Quality Transient recorded wave file with
And unified time labelling, transfer automatically transient event quality of power supply steady state data for the previous period, transient event occur and send out
Power Quality Transient recorded wave file when raw and after transient event generation, and each transient state recorded wave file is divided offline
Analysis, and generate corresponding Power Quality Transient analysis report；
The comprehensive power quality analysis, is the Power Quality Transient recorded wave file and unified time mark selected according to user
Note, transfer automatically transient event occur for the previous period, transient event occur when and transient event occur after the quality of power supply
Steady state data, analyzes the variation tendency of each quality of power supply Steady-state Parameters and every impact of the Steady-state Parameters to transient event, really
Weight ratio of the fixed items Steady-state Parameters on transient state transient event probability is caused, is accurately positioned Power Quality Transient event former
Cause, and generate corresponding comprehensive power quality analysis report；It is characterized in that：
There is below step successively：
1) input signal A-D conversion
Quality of power supply harvester is arranged on into monitoring field, the signal input module of quality of power supply harvester is by monitoring field
Threephase potential transformer and the signal of threephase current transformer access the plurality of voltages and current input circuit, receive monitoring
The multichannel three-phase voltage and three-phase current of point, carries out isolation conversion and filtering by the isolation conversion and filter circuit, then by institute
The sampling switch for stating voltage and current signal sampling hold circuit takes multichannel current voltage and current channel analogue signal, and right
Current voltage and current channel analogue signal are kept, finally by the A-D sample circuits by plurality of voltages and current channel
Analogue signal is converted to plurality of voltages and current channel digital signal and collects, and sends data acquisition to by backboard data/address bus
And analysis module is processed；
2) sampled point beats markers
Quality of power supply harvester pair when module by FPGA to external time service device or 1PPS, IRIG-B of time service unit
Signal is parsed, and is generated high-precision external timing signal, is beaten markers to sampled point；
3) preliminary stable parameter calculation
Data acquisition and pretreatment module in the data acquisition of quality of power supply harvester and analysis module, it is total from backboard data
When the having beaten plurality of voltages of target sampled point and current sampling data is read on line in real time, according to being analyzed by comprehensive power quality
System configures content by the stable state definite value that Ethernet interface sends, and the voltage and current sample data of accumulation certain hour continue
Quality of power supply steady state data is calculated, and quality of power supply steady state data is preserved by predefined data type, and by the back of the body
Result of calculation transmission data analysis module is further processed by plate data/address bus；
4) transient disturbance judges
Data acquisition and pretreatment module in the data acquisition of quality of power supply harvester and processing module, according to by electric energy matter
The transient disturbance definite value configuration content that amount overall analysis system sends, carries out transient disturbance startup and sentences to real-time sampling initial data
Disconnected, if meeting transient disturbance entry condition, the real-time sampling initial data is Power Quality Transient Disturbance, and by predefined
Data type Power Quality Transient Disturbance is preserved, and by backboard data/address bus by transient disturbance start judge original
Beginning data is activation data analysis module is further processed；
5) steady trend data are calculated
Data analysis module in the data acquisition of quality of power supply harvester and processing module receives the data acquisition and pre-
The quality of power supply steady state data of reception is carried out secondary calculating, the secondary calculating by the quality of power supply steady state data of processing module
Including power, power factor and electric energy is calculated, wherein power includes active power, reactive power and apparent energy, counts secondary
The quality of power supply steady trend data for calculating, automatically generate the steady trend file for meeting predefined structure, store in CF cards,
And corresponding data are sent the back-stage management machine in the comprehensive power quality analysis system by Ethernet interface, it is stored in backstage
The hard disk of supervisor；
6) transient power quality judges
Data analysis module in the data acquisition of quality of power supply harvester and processing module receives the data acquisition and pre-
The Power Quality Transient Disturbance of processing module, according to time labelling and the data characteristicses of Temporal Data, the quality of power supply that will be received
Temporal Data carries out transient disturbance intelligent decision, and the transient disturbance intelligent decision adopts various transient power quality analysis sides
Method, the transient power quality analysis method include Fast Wavelet analysis method, S-transformation analysis method and time-domain difference analysis side
Method, analyzes the effectiveness of noisy data, and to effective transient disturbance data, rapid extraction transient power quality information, analysis are temporary
The initial time of state disturbance, persistent period, disturbance amplitude, classify to transient disturbance event, above-mentioned transient information are analyzed
As a result the transient state recorded wave file of predefined structure is automatically generated, is stored in CF cards, and corresponding data are sent by Ethernet interface
Back-stage management machine in the comprehensive power quality analysis system, is stored in the hard disk of back-stage management machine；
7) quality of power supply stable state statistical report and Power Quality Transient analysis report are generated
The time period that data analysis module in the data acquisition of quality of power supply harvester and processing module is selected according to user
With circuit name, voltage deviation, frequency departure, three-phase imbalance, harmonic wave, voltage fluctuation and flicker are counted, and generates phase
The quality of power supply stable state statistical report answered, also carries out off-line analysiss to each transient state recorded wave file, and generates corresponding electric energy
Quality transient analysis is reported；
8) the comprehensive analysis quality of power supply
The Power Quality Transient recorded wave file selected according to user and unified time labelling, transfer transient event generation automatically
For the previous period, quality of power supply steady state data when transient event occurs and after transient event generation, analyzes each electric energy matter
The variation tendency of amount Steady-state Parameters and every impact of the Steady-state Parameters to transient event, determine its weight ratio, are accurately positioned electric energy
Quality transient event reason, and corresponding comprehensive power quality analysis report is generated, check, arrange and send quality of power supply stable state
Out-of-limit and transient disturbance definite value, the interface of real-time exhibition power quality data, and derive and print quality of power supply stable state and temporarily
State data.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104280601B (en) * | 2014-09-27 | 2018-05-15 | 无锡市恒通智能交通设施有限公司 | A kind of voltage measurement system of Vehicular intelligent monitoring photo-voltaic power supply |
| CN105021925B (en) * | 2015-07-15 | 2018-06-29 | 深圳市双合电气股份有限公司 | Power monitoring system and method based on cement industry |
| CN105242131B (en) * | 2015-09-09 | 2018-03-13 | 深圳市双合电气股份有限公司 | Energy consumption real time monitoring managing device and method |
| CN106226653A (en) * | 2016-08-11 | 2016-12-14 | 国网浙江省电力公司宁波供电公司 | The transfer law assessment system of the voltage dip of multistage power grid and appraisal procedure |
| CN106370913A (en) * | 2016-09-18 | 2017-02-01 | 浙江群力电气有限公司 | Node voltage dip severity evaluation system and evaluation method |
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| CN107727973A (en) * | 2017-11-07 | 2018-02-23 | 广东电网有限责任公司电力科学研究院 | A kind of quality of power supply measuring method and system |
| CN107944307B (en) * | 2017-12-15 | 2021-03-30 | 安徽长泰信息安全服务有限公司 | Computer safety protection management system |
| CN108646209A (en) * | 2018-06-08 | 2018-10-12 | 广西电网有限责任公司电力科学研究院 | A kind of equipment for monitoring power quality on-site proving system and calibration method |
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| CN110320407A (en) * | 2019-07-31 | 2019-10-11 | 国家电网有限公司 | A kind of spot measurement power grid main harmonic source localization method based on apparent energy |
| CN110632505B (en) * | 2019-08-21 | 2021-09-28 | 上海红檀智能科技有限公司 | Miniature circuit breaker and method for rapidly detecting, recording and analyzing transient power quality of miniature circuit breaker |
| CN111398714B (en) * | 2020-04-01 | 2022-11-18 | 深圳市中电电力技术股份有限公司 | Multi-data fusion power quality fault diagnosis method and system |
| CN112003375B (en) * | 2020-08-25 | 2022-04-15 | 杭州电力设备制造有限公司 | Electric energy quality on-line monitoring system |
| CN113092854A (en) * | 2021-04-13 | 2021-07-09 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Electric energy quality wave recording device and application of communication protocol extension |
| CN113625074B (en) * | 2021-07-02 | 2023-06-06 | 深圳供电局有限公司 | Method and device for discriminating long-time flicker exceeding standard caused by transient electric energy quality disturbance |
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| CN101515015B (en) * | 2009-03-06 | 2010-12-08 | 深圳市双合电气股份有限公司 | Power quality monitoring and recording device of power system |
| CN101498757B (en) * | 2009-03-06 | 2012-05-30 | 深圳市双合电气股份有限公司 | Real-time dynamic monitoring and recording equipment of power system |
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