CN109450087A - Equipment protection system and method based on electric energy quality monitoring - Google Patents
Equipment protection system and method based on electric energy quality monitoring Download PDFInfo
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- CN109450087A CN109450087A CN201811260775.7A CN201811260775A CN109450087A CN 109450087 A CN109450087 A CN 109450087A CN 201811260775 A CN201811260775 A CN 201811260775A CN 109450087 A CN109450087 A CN 109450087A
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- power quality
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- early warning
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to circuit load equipment, it discloses a kind of equipment protection system and method based on electric energy quality monitoring solves the problems, such as to adopt an effective measure cause load equipment impaired not in time because power quality reduces, preferably be protected to equipment.The equipment protection system includes: the Power Quality Detection control system, for completing the real-time acquisition and transmission of power quality information, and Optimization Compensation of the completion to transmission line of electricity power quality under the control of background processing system；The background processing system starts the Optimization Compensation measure of transmission line of electricity power quality when judging that power quality occurs abnormal, while issuing abnormity early warning information to Forewarning Terminal for completing the real-time analysis and operation of power quality information；The Forewarning Terminal carries out early warning for receiving the abnormity early warning information that background processing system issues, and for feeding back this early warning processing status to background processing system.
Description
Technical field
The present invention relates to the control protection techniques of circuit load equipment, especially large-scale precision equipment, and in particular to a kind of
Equipment protection system and method based on electric energy quality monitoring.
Background technique
The quality of electric energy in power quality, that is, electric system, ideal electric energy are the sine waves of ideal symmetrical, frequency 50Hz,
But power generation, transmission of electricity, distribution, each link of electricity consumption involved in entire electric system can there are different objective factors
Cause the variation of electric energy waveform, therefore, power quality problem also just always exists.
Early stage power system development, the composition of electric load is fairly simple, and mainly linear load forms, including same
Motor, asynchronous motor and various lighting apparatus etc. are walked, therefore the index for measuring power quality is also fairly simple, mainly there is frequency
It deviates and two kinds of variation.With power electronic technique fast development, non-linear power electronic devices and device are extensive
Applied in modern industry.Direct current transportation and flexible AC transmission (FACTS) technology are also constantly put into practical work by electric system
In Cheng Yingyong, speed regulating motor and reactive power compensation capacitor also largely put into effect.The operation of these equipment inevitably causes
Voltage and current wave distortion in power grid, harmonics level constantly rise.Electric harmonic easily causes series resonance and parallel resonance,
Amplify harmonic wave, causes dangerous overvoltage or overcurrent；Also equipment operation can be made abnormal or be unable to correct operation.Together
When, impact, wavy load (such as electric arc furnaces, heavy (merchant) mill, electric locomotive etc.) operation in can also generate a large amount of height
The power quality problems such as subharmonic, voltage fluctuation, flickering, three-phase imbalance.
With the development of science and technology, various complicated, accurate, sensitive to power quality electrical equipments are constantly universal, than
Such as: the large-scale precision production equipment of some factories is controlled for the precision monitor instrument of hospital, for the transmission of electricity in particular surroundings
Device etc., these instrument and equipments are at high cost, at the same power quality is required it is high, easily because causing the problem of power quality
The consequences such as equipment damage, service life weaken, precision reduces.Although the various technical solutions of utility power quality control are such as: Reactive power compensation installations,
It filter and overweights and solves the problems, such as that the Research on Unified Power Quality Conditioner etc. of transient power quality also comes into being, but there is also
Another aspect key point is in time, accurately obtain the information in relation to " source ", such as three-phase voltage, three-phase current, middle line
Then electric current and middle line-to-earth voltage etc. in real time, quickly analyze to these source information, could use controlling party appropriate
Method, while corresponding movement is executed according to actual application scenarios.
Thus the monitoring of power quality has become a hot topic of research, and based on the monitoring and analysis to power quality, passes through route
Electric energy allotment, with can manage, the modes such as early warning take control to instrument and equipment in time is also one most direct effectively square
Method is finally reached the purpose to equipment effective protection.
Summary of the invention
The technical problems to be solved by the present invention are: proposing a kind of equipment protection system based on electric energy quality monitoring and side
Method, solving the problems, such as to adopt an effective measure not in time because of power quality reduction causes load equipment impaired, carries out more to equipment
Good protection.
The technical proposal adopted by the invention to solve the above technical problems is that:
Equipment protection system based on electric energy quality monitoring, including Power Quality Detection control system, background processing system
And Forewarning Terminal；
The Power Quality Detection control system, for completing the real-time acquisition and transmission of power quality information, Yi Ji
The Optimization Compensation to transmission line of electricity power quality is completed under the control of background processing system；
The background processing system is judging power quality for completing the real-time analysis and operation of power quality information
Start the Optimization Compensation measure of transmission line of electricity power quality when occurring abnormal, while issuing abnormity early warning information to Forewarning Terminal；
The Forewarning Terminal carries out early warning for receiving the abnormity early warning information that background processing system issues, is used in combination
In feeding back this early warning processing status to background processing system.
As advanced optimizing, the abnormity early warning information is included in the counte-rplan that the equipment end of protection should be taken.
As advanced optimizing, the Power Quality Detection control system includes Power Quality Detection module and power quality
Compensation system, the Power Quality Detection module for being acquired in real time to power quality information, and pass through it is wired or
Wifi network is transmitted to background processing system；The electric energy quality compensation system, for receiving electricity under background processing system
Energy mass compensation control instruction, executes the Optimization Compensation to power supply line's power quality.
As advanced optimizing, the power quality information: voltage, electric current, harmonic wave and m-Acetyl chlorophosphonazo temporal characteristics.
As advanced optimizing, the background processing system has powerful Data Analysis Services ability, including engineering
Practise and the advanced algorithms such as neural network, can analyze current power quality characteristic according to the data information received, and with study
Various situations under power quality feature be compared, differentiate the reason of power quality exception, abnormal variation degree, and accordingly
Determine the specific embodiment of warning information and power quality compensation measure, the specific implementation of the power quality compensation measure
Scheme includes Optimization Compensation measure to transmission line of electricity power quality and the counte-rplan that should take of equipment end in protection.
As advanced optimizing, the Forewarning Terminal has the ability with background processing system wireless remote real-time communication,
Forewarning Terminal and the one-to-one configuration of claimed equipment are installed.
As advanced optimizing, the background processing system is also used to, and electric energy matter is notified when power quality restores normal
It measures compensation system to close, restores default conditions.
In addition, being applied to above system the present invention also provides a kind of equipment protection method based on electric energy quality monitoring
In, method includes the following steps:
A. Power Quality Detection module acquires power quality information in real time, and is transmitted to background processing system；
B. background processing system is analyzed power quality information and operation in real time, is judging that it is abnormal that power quality occurs
The Optimization Compensation measure of Shi Qidong transmission line of electricity power quality, while abnormity early warning information is issued to Forewarning Terminal；
C. the abnormity early warning information that Forewarning Terminal receives that background processing system issues carries out early warning；
D. equipment user executes relevant operation to equipment according to early warning, and anti-to background system by Forewarning Terminal
Present this early warning processing status.
The beneficial effects of the present invention are:
1. realizing the real-time detection and analysis of transmission line of electricity power quality, user can intuitively have found power quality reduction
Scene；
2. the judgment method of machine learning can be formed, fast and accurately by the big data analysis operation of background system
Determine the temporal characteristics of power quality, and related counte-rplan the most suitable, and early warning and counte-rplan informing are set
Standby user；
3. on the one hand the safeguard measure that this system is taken simultaneously is automatic starting electric energy quality optimizing scheme, on the other hand
It is to issue counte-rplan using end to equipment, is handled while by delivery end with load side, instrument and equipment is preferably protected.
Detailed description of the invention
Fig. 1 is the equipment protection system principle framework figure based on electric energy quality monitoring in the present invention；
Fig. 2 is the equipment protection system schematic diagram based on electric energy quality monitoring in the embodiment of the present invention.
Specific embodiment
Present invention seek to address that load equipment (especially precision instrument and equipment) because taking not in time when power quality reduces
The impaired problem of equipment caused by effective measures, by the detection and quickly analysis of the power quality to power supply line, in advance
Early warning is simultaneously provided to the effective protection scheme of equipment, is taken control measure to equipment and instrument in time, is reached to its effective protection
Purpose.
The present invention constructs a kind of equipment protection system based on Power Quality Detection, for equipment to be protected is needed, builds
The vertical background system for being handled in real time its power supply line's Power Quality Detection, energy data, being shown, passes through backstage rapid computations point
Analysis is made rapidly electric energy quality optimizing protection for electric energy transmission end and is arranged when abnormal or undesirable state occurs in power quality
It applies, while issuing the Forewarning Terminal that warning information is equipped with to corresponding equipment, equipment user can handle related pre- at the first time
Alert information simultaneously executes relevant operation in time, and after equipment end is operated, Forewarning Terminal will return to background system processing status,
Background system will judge equipment state, to control the adjustment of the Optimized Measures of transmission side.
As shown in Figure 1, the equipment protection system based on electric energy quality monitoring in the present invention includes Power Quality Detection control
System, background processing system and Forewarning Terminal processed；Wherein, Power Quality Detection control system includes: Power Quality Detection module
And electric energy quality compensation system；
The Power Quality Detection module passes through wired or wifi for being acquired in real time to power quality information
Network transmission is to background processing system；
The electric energy quality compensation system, the power quality compensation control instruction issued for receiving background processing system,
Execute the Optimization Compensation to power supply line's power quality.
The background processing system is judging power quality for completing the real-time analysis and operation of power quality information
Start the Optimization Compensation measure of transmission line of electricity power quality when occurring abnormal, while issuing abnormity early warning information to Forewarning Terminal；
The Forewarning Terminal carries out early warning for receiving the abnormity early warning information that background processing system issues, is used in combination
In feeding back this early warning processing status to background processing system.
In specific implementation, the Power Quality Detection module is by special chip, low-power consumption MCU, powerful list
The hardware such as piece machine core piece mainly complete the related data packets to power quality information by the customized exploitation of circuit design of profession
Include: voltage, electric current, harmonic wave, m-Acetyl chlorophosphonazo temporal characteristics acquire in real time and be uploaded to background processing system；
The background processing system is mainly made of hardware such as host computer, servers, and software systems have machine
The complicated algorithms such as study, neural network and analysis processing capacity to data, power supply line's power quality number that it is detected
According to capableing of its characteristic of the analysis of fast accurate, when there is unstable power quality, voltage deviation, frequency departure, power supply line three
When mutually uneven, analyze its deviation range and it is expected that influence degree to power quality, quickly judges whether to open
Dynamic relevant programme simultaneously executes, comprising: starting electric energy quality compensation system issues warning information and measure scheme to Forewarning Terminal；
The electric energy quality compensation system is by electron electric power technology, and by circuit design, building passes through circuit
Controller automatic control circuit electronics flowing, so that the influence to harmonic wave, frequency, voltage, current deviation is realized, thus to power supply
Route power quality provides a kind of circuit system of protection compensation；
The Forewarning Terminal receives the line conditions that information can prompt precision equipment user current at the first time, electric energy
Quality condition, and user is prompted to take operation control such as to equipment: it resets, is standby, shutdown, power-off relevant operation, when making
After user is disposed, processing status is returned to by background process center by Forewarning Terminal.
Embodiment:
As shown in Fig. 2, JMSB001 is the end load on branch L1, this equipment is precision instrument, right in the present embodiment
Electricity quality requirement is high, needs to stop its working condition in time in the case where there is unstable power quality or reduction；
Whole equipment protects system composition:
With the matched Forewarning Terminal CH01 of JMSB001, arranged by early warning annunciator user power levels and processing
It applies；
Power quality detection system System-in is big by electric energy detection module J C_01 and power compensation system XT_01 two
Core composition；
Background processing system System-out is made of server host computer, data processing system software etc., completion pair
Early warning and starting power compensation are completed in quick, the accurate operational analysis of power quality；
In the present embodiment, the workflow of equipment protection system is as follows:
1) JC_01 completes acquiring in real time and be transmitted to System-out to the power quality information of power supply line L1；
2) System-out carries out rapid computations analysis to the data received, and the power quality for obtaining real-time electric line L1 is special
Property, and according to the standard of power quality, judge whether power quality is in normal condition；
3) there are problems that quality reduction when analyzing L1 power quality, when needing to take safeguard measure to JMSB001,
System-out is notified that System-in starting power quality compensation protection system, while System-out can be by wirelessly passing
Defeated mode issues processing of the warning information to CH01 completion to this bursty state；
4) equipment user passes through the status early warning information and project and measures of CH01, completes to implement the guarantor to JMSB001
Shield measure achievees the purpose that protect equipment injury-free, while user will return to processing status to System-out by CH01；
Three-phase imbalance in power grid is an index critically important in power quality, when three-phase injustice occurs in power supply line
When weighing apparatus, the workflow of whole system are as follows: the power quality information of JC_01 acquisition power supply line L1 is simultaneously transmitted to System-
out；
The power quality characteristic that System-out analyzes to obtain L1 to the data progress rapid computations received shows as three-phase
Imbalance determines the distribution situation for carrying out each phase, and the supply voltage that this imbalance will lead to JMSB001 equipment is insufficient, if held
Continue in running order, equipment exports result precision and reduces, and can seriously cause equipment impaired；System-out can be notified immediately
System-in starts three-phase equilibrium regulatory function, while issuing early warning letter to the Forewarning Terminal CH01 of JMSB001 equipment immediately
Breath: " red warning: line voltage distribution is insufficient, please keep equipment closed state！"；
When equipment user receives this warning information, shutoff operation is executed to equipment immediately, reached protect equipment not by
Implementing result is passed through button by damage, equipment user: being finished, is fed back to System-out；When power quality is restored just
Often, System-out notifies System-in to restore default conditions.
Claims (8)
1. the equipment protection system based on electric energy quality monitoring, which is characterized in that including Power Quality Detection control system, backstage
Processing system and Forewarning Terminal；
The Power Quality Detection control system is acquired and is transmitted for completing the real-time of power quality information, and on backstage
The Optimization Compensation to transmission line of electricity power quality is completed under the control of processing system；
The background processing system is judging power quality appearance for completing the real-time analysis and operation of power quality information
Start the Optimization Compensation measure of transmission line of electricity power quality when abnormal, while issuing abnormity early warning information to Forewarning Terminal；
The Forewarning Terminal carries out early warning for receiving the abnormity early warning information that background processing system issues, and for
Background processing system feeds back this early warning processing status.
2. as described in claim 1 based on the equipment protection system of electric energy quality monitoring, which is characterized in that the abnormity early warning
Information is included in the counte-rplan that the equipment end of protection should be taken.
3. as described in claim 1 based on the equipment protection system of electric energy quality monitoring, which is characterized in that the power quality
Detecting and controlling system includes Power Quality Detection module and electric energy quality compensation system, the Power Quality Detection module for pair
Power quality information is acquired in real time, and is transmitted to background processing system by wired or wifi network；The electric energy matter
Compensation system is measured, the power quality compensation control instruction issued for receiving background processing system is executed to power supply line's electric energy
The Optimization Compensation of quality.
4. as described in claim 1 based on the equipment protection system of electric energy quality monitoring, which is characterized in that the power quality
Information: voltage, electric current, harmonic wave and m-Acetyl chlorophosphonazo temporal characteristics.
5. as described in claim 1 based on the equipment protection system of electric energy quality monitoring, which is characterized in that the background process
System includes machine learning and neural network algorithm, and current power quality characteristic can be analyzed according to the data information received,
And be compared with the power quality feature in the various situations of study, differentiate the reason of power quality exception, abnormal variation journey
Degree, and determine therefrom that the specific embodiment of warning information and power quality compensation measure, the power quality compensation measure
Specific embodiment include Optimization Compensation measure to transmission line of electricity power quality and the answering of should taking of equipment end in protection
To scheme.
6. as described in claim 1 based on the equipment protection system of electric energy quality monitoring, which is characterized in that the Forewarning Terminal
Has the ability with background processing system wireless remote real-time communication, Forewarning Terminal and the one-to-one configuration of claimed equipment are pacified
Dress.
7. as described in claim 1 based on the equipment protection system of electric energy quality monitoring, which is characterized in that the background process
System is also used to, and when power quality restores normal, notice electric energy quality compensation system is closed, and restores default conditions.
8. the equipment protection method based on electric energy quality monitoring is protected applied to the equipment as described in claim 1-7 any one
In protecting system, method includes the following steps:
A. Power Quality Detection module acquires power quality information in real time, and is transmitted to background processing system；
B. background processing system is analyzed power quality information and operation in real time, opens when judging that power quality occurs abnormal
The Optimization Compensation measure of dynamic transmission line of electricity power quality, while abnormity early warning information is issued to Forewarning Terminal；
C. the abnormity early warning information that Forewarning Terminal receives that background processing system issues carries out early warning；
D. equipment user executes relevant operation to equipment according to early warning, and passes through Forewarning Terminal to backstage system feedback sheet
Secondary early warning processing status.
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| CN201811260775.7A CN109450087A (en) | 2018-10-26 | 2018-10-26 | Equipment protection system and method based on electric energy quality monitoring |
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| CN201811260775.7A CN109450087A (en) | 2018-10-26 | 2018-10-26 | Equipment protection system and method based on electric energy quality monitoring |
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Cited By (1)
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| CN112653245A (en) * | 2020-12-25 | 2021-04-13 | 江苏锦记智能电气科技有限公司 | Active filter safety early warning management system |
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