CN2904422Y - Dynamic load monitoring controller - Google Patents
Dynamic load monitoring controller Download PDFInfo
- Publication number
- CN2904422Y CN2904422Y CNU2005201239228U CN200520123922U CN2904422Y CN 2904422 Y CN2904422 Y CN 2904422Y CN U2005201239228 U CNU2005201239228 U CN U2005201239228U CN 200520123922 U CN200520123922 U CN 200520123922U CN 2904422 Y CN2904422 Y CN 2904422Y
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- signal
- control
- warning
- load
- induction motor
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
A dynamic load monitoring and controlling device, provides a dynamic load monitoring and controlling system in particular to that of the induction motor, according to the natural characteristics of the induction motor load, applying modern remote monitoring and controlling technology, regulating the parameters so as to influence the characteristics of the induction motor load, improve the situation of instability of the power network or even collapse, improve the stability of the power network and reduce the accident loss to the greatest extent. The advantages and technical effects are in that: the hardware device combines with the computer software program, the hardware device is of easy design and the software program is easy to understand; the computer data processing and the management system uses the friendly interface compiled in VB language, making it convenient for the operators to understand and visual to operate; the database program makes it easy to query data, record and type.
Description
(1) technical field:
The utility model belongs to power system load Monitoring and Controlling technical field, particularly a kind of dynamic thermal circuit rating control device that integrates hardware technology and software programming.
(2) background technology:
In the last few years, a lot of large area blackouts have taken place in developed country, especially U.S. Canada 8.14 and Moscow 5.25 accident of having a power failure on a large scale has caused enormous economic loss; Though similarly serious accident did not take place in China, local power outage happens occasionally; In whole electric power system, load substantially the most also is most important factor beyond doubt, leaves load and talks the stabilization of power grids with meaningless; And the load have time variation, be dynamic; Therefore that analyzes the stabilization of power grids and load concerns that the dynamic load of problem in must considering to load mainly is the characteristic of induction motor load.Two essential condition that it affects the stabilization of power grids to a great extent are active power balance and reactive power equilibrium problem, and the dynamic load characteristic that comes into one's own in the research of the stabilization of power grids at present has following 2 aspects: (1) dynamic load is adjusted the intrinsic characteristic of admittance automatically for the active power balance of realizing I/O.During the steady load operation, show as a constant equivalent admittance.After running status changes, show as a motional admittance.(2) along with the load busbar voltage descends, the characteristic that the reactive power that load absorbs from system increases on the contrary can worsen the regional reactive balance situation of system, forms the positive feedback mechanism that causes voltage to descend.Based on above 2 points, when breaking down or during power fluctuation in certain zone, because dynamic load is the inherent characteristic of induction motor load itself, may accelerate the unstability and the collapse process of whole regional power grid, bring enormous economic loss, therefore the dynamic characteristic of control load will be one of importance that guarantees power system stability fast and effectively.
(3) summary of the invention:
The purpose of this utility model is to provide a kind of dynamic thermal circuit rating control device, it is at the inherent characteristic of induction motor load, utilization remote modern Monitoring and Controlling technology, adjustable parameter, to influence the characteristic of induction motor load, improve the electrical network unstability that the contingent because induction motor load characteristic in a certain zone caused even the situation of collapse, improve grid stability, farthest reduce causality loss.
The technical solution of the utility model: a kind of dynamic thermal circuit rating control device is characterized in that this device is by data acquisition, load control and warning system two parts; Said part of data acquisition external hardware device comprises voltage transformer, signal isolator, transmitter, variable connector, signals collecting integrated circuit board and industrial control computer; The input termination bus of voltage transformer, its output connect signal isolator, and the output that the output of signal isolator is connected to transmitter, transmitter is connected to the signals collecting integrated circuit board, and the signals collecting integrated circuit board inserts in the PCI slot of industrial control computer; Said load control and warning system comprise frequency converter and some warning devices; Can regulate the induction motor rotating speed by frequency converter, thereby control the slippage s of motor, influence the equivalent resistance of induction motor, the meritorious and reactive power that final control of induction absorbs.Warning device mainly comprises signal receiving device, signal lamp; The switching value signal that common signal receiving device reception microcomputer data processing and management system are sent, the switching of decision signal lamp.
A kind of method of work that cooperates above-mentioned dynamic thermal circuit rating control device, it is characterized in that it is that operation sequence four parts by the upper strata friendly interface, data processor, database manipulation program and the hardware that use the VB language compilation constitute: the signal of (1) signals collecting integrated circuit board collection is handled the data message that obtains through data processor and is imported the database manipulation program into; (2) the controlled information of returned data routine processes is imported the hardware controls program into then; (3) after the hardware controls program obtained analysis result, the indication load control system carried out the control of switching value and analog quantity, sends the switching value signal to warning system simultaneously; (4) the upper strata friendly interface shows processing procedure in whole process.
Operation principle of the present utility model:
The operation principle of the dynamic thermal circuit rating control device that this case is related is: part of data acquisition is actual to be frequency and voltage measuring device, realizes real-time collection and processing to frequency signal and voltage signal by external hardware device and computer software programming; Microcomputer data processing and administrative section are actual to be to realize information processing, show, report to the police and wait the central control system of operation, it is compared the frequency and the voltage signal of acquisition system gained with setpoint frequency and magnitude of voltage, calculate deviation, if deviation is greater than allowed band, then conditioning signal is passed to the dynamic load control system according to negative-feedback principle, control of order load and warning system are simultaneously finished controlling schemes, one side is sent the switching value signal to warning device, red led lights, notify the site operation personnel to survey the bus frequency and voltage has abnormal conditions, cause that the Field Force pays close attention to, simultaneously display abnormality in the friendly interface of Industrial Control Computer, notice control room personnel, finish controlling schemes when load control and warning system, when system frequency and busbar voltage were recovered normal condition, alarm signal disappeared, the warning system green light lights, and the data with whole process record in the corresponding database through handling at last.
Superiority of the present utility model and technique effect are: 1. hardware unit combines with computer software programming, the hardware unit simplicity of design, and software programming is easy-to-understand; 2. part of data acquisition is used signal isolator, can prevent the misoperation that interference signal may cause, has used data collecting plate card, has guaranteed the real-time of image data; 3. utilize computer data computation and data-handling capacity at a high speed, improved greatly this monitoring system Monitoring and Controlling speed and reliability 4. the use of microcomputer data processing and management system realized long-range and controlled the friendly interface that 5. microcomputer data processing and management system adopt the VB language compilation automatically, make operating personnel be more convenient for understanding, operate also more directly perceived; 6. powerful database support is arranged, be convenient to technology and administrative staff analysis, to the statistics and the inquiry of data accident.
(4) description of drawings:
Accompanying drawing 1 is the general structure schematic diagram in the related dynamic thermal circuit rating control device of the utility model.
Accompanying drawing 2 is the part of data acquisition structural representation in the related dynamic thermal circuit rating control device of the utility model.
Accompanying drawing 3 is that the software in the related dynamic thermal circuit rating control device of the utility model is realized schematic diagram.
Accompanying drawing 4 is the data processor flow chart in the related dynamic thermal circuit rating control device of the utility model
Accompanying drawing 5 is load control and the warning system structural representation in the related dynamic thermal circuit rating control device of the utility model
(5) embodiment:
Embodiment: a kind of dynamic thermal circuit rating control device (see figure 1) is characterized in that this system is by data acquisition, load control and warning system two parts; Said part of data acquisition external hardware device comprises voltage transformer, signal isolator, transmitter, variable connector, signals collecting integrated circuit board and industrial control computer; The input termination bus of voltage transformer, its output connect signal isolator, the output that the output of signal isolator is connected to transmitter, transmitter is connected to the signals collecting integrated circuit board, and the signals collecting integrated circuit board inserts the interior (see figure 2) of PCI slot of industrial control computer; Said load control and warning system comprise frequency converter and some warning devices; Can regulate the induction motor rotating speed by frequency converter, thereby control the slippage s of motor, influence the equivalent resistance of induction motor, the meritorious and reactive power that final control of induction absorbs.Warning device mainly comprises signal receiving device, signal lamp; The switching value signal that common signal receiving device reception microcomputer data processing and management system are sent, the switching of decision signal lamp.
Wherein the signals collecting integrated circuit board adopts and grinds the magnificent PCI-1710 of company integrated circuit board, and Industrial Control Computer adopts and grinds magnificent industrial computer, and voltage transformer uses HJ57A1 type voltage transformer, and signal isolator adopts PH-10 series of signals isolator.
A kind of method of work that cooperates above-mentioned dynamic thermal circuit rating control device, it is characterized in that it is that operation sequence four parts by the upper strata friendly interface, data processor (see figure 3), database manipulation program and the hardware that use the VB language compilation constitute: the signal of (1) signals collecting integrated circuit board collection is handled the data message that obtains through data processor and is imported the database manipulation program into; (2) the controlled information of returned data routine processes is imported the hardware controls program into then; (3) after the hardware controls program obtained analysis result, the indication load control system carried out the control of switching value and analog quantity, sends the switching value signal to warning system simultaneously; (4) the upper strata friendly interface shows the processing procedure (see figure 4) in whole process.
Claims (4)
1, a kind of dynamic thermal circuit rating control device, it is characterized in that this system is made up of the hardware device of data acquisition and load control and the software that computer language is write, and mainly is made up of four parts such as data acquisition, microcomputer data processing and management system, load control system, warning systems; The input of said part of data acquisition is connected on the bus of electrical network, and its output connects microcomputer data processing and management system and warning system, and microcomputer data processing and management system output be the input of connected load control system then.
2,, it is characterized in that the hardware device of this system relates generally to data acquisition, load control and two big parts of warning system according to the said a kind of dynamic thermal circuit rating control device of claim 1.
3, according to the said a kind of dynamic thermal circuit rating control device of claim 2, it is characterized in that the part of data acquisition external hardware device comprises: voltage transformer, signal isolator, transmitter, variable connector, signals collecting integrated circuit board and industrial control computer; Voltage transformer reduces busbar voltage, signal isolator is got rid of the interference signal in the voltage signal of voltage transformer step-down, transmitter becomes standard signal with this conversion of signals, and the signals collecting integrated circuit board enters computer with this standard signal collection and handles then; Variable connector can realize that an industrial control computer is simultaneously to the collection of many busbar voltage data.
4,, it is characterized in that load control and warning system comprise frequency converter and some warning devices according to the said a kind of dynamic thermal circuit rating control device of claim 2; Can regulate the induction motor rotating speed by frequency converter, thereby control the slippage s of motor, influence the equivalent resistance of induction motor, the meritorious and reactive power that final control of induction absorbs; Warning device mainly comprises signal receiving device, signal lamp; The switching value signal that common signal receiving device reception microcomputer data processing and management system are sent, the switching of decision signal lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201239228U CN2904422Y (en) | 2005-12-12 | 2005-12-12 | Dynamic load monitoring controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201239228U CN2904422Y (en) | 2005-12-12 | 2005-12-12 | Dynamic load monitoring controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2904422Y true CN2904422Y (en) | 2007-05-23 |
Family
ID=38079835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201239228U Expired - Fee Related CN2904422Y (en) | 2005-12-12 | 2005-12-12 | Dynamic load monitoring controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2904422Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598457A (en) * | 2009-11-30 | 2012-07-18 | 京瓷株式会社 | Control apparatus, control system, and control method |
| CN104617986A (en) * | 2015-02-05 | 2015-05-13 | 南京工程学院 | Detection device of power line carrier communication channel |
-
2005
- 2005-12-12 CN CNU2005201239228U patent/CN2904422Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598457A (en) * | 2009-11-30 | 2012-07-18 | 京瓷株式会社 | Control apparatus, control system, and control method |
| CN102598457B (en) * | 2009-11-30 | 2015-05-20 | 京瓷株式会社 | Control apparatus, control system, and control method |
| CN104617986A (en) * | 2015-02-05 | 2015-05-13 | 南京工程学院 | Detection device of power line carrier communication channel |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |