CN101630863B - Intelligent phase selection control method for light-control module type intelligent vacuum switch and method thereof - Google Patents
Intelligent phase selection control method for light-control module type intelligent vacuum switch and method thereof Download PDFInfo
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- CN101630863B CN101630863B CN2009100636340A CN200910063634A CN101630863B CN 101630863 B CN101630863 B CN 101630863B CN 2009100636340 A CN2009100636340 A CN 2009100636340A CN 200910063634 A CN200910063634 A CN 200910063634A CN 101630863 B CN101630863 B CN 101630863B
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Abstract
The invention discloses an intelligent phase selection control method for light-control module type intelligent vacuum switches. By adopting a high-performance DSP digital signal processor and a flexible control technology, optimum switching phase of the switch can be judged fast and accurately, and reliable operation can be carried out; by adopting an optical fiber to control signal transmission, the high voltage and low-voltage isolation can be realized, insolating structure is simplified, and the anti-interference capacity is strong; by adopting various communication technologies comprising a wireless communication and a serial communication and the like, real time information exchange with a plant computer system can be realized; by controlling the vacuum switch combined by series connection and parallel connection building blocks of light-control intelligent vacuum switch with phase selection function, so that the phase selection control of intelligent vacuumswitch of high voltage level is realized.
Description
Technical field
The present invention relates to a kind of optically controlled modular intelligent vacuum switch intelligence and select phase control method, belong to power high voltage switching technique field.
Background technology
The operating characteristics of switch is most important to safe, the stable and economical operation of electrical network.Be applied to the switch of switching capacitive load (capacitor group, unloaded power transmission line etc.) or inductive load (transformer, reactor group, large capacity motor etc.); The switch transient process that breaking-closing operating brought can produce various interference to electric power system; Cause overvoltage and overcurrent, even can propagate into far-end and influence other users.This requires to draw attention under the more and more stricter background in the quality of power supply.
Be composed in series high-pressure vacuum switch with light controlled vacuum switch module in the Chinese patent 01127930.3 " a kind of light controlled modualr high-pressure vacuum switch techonlogy "; Unit module is accomplished with vacuum interrupter and is connected and segmentation; Its moving conductive rod directly links to each other with operating mechanism, and use the induction power supply coil from load current, to extract energy and be charge in batteries, be mechanism's power supply by this storage battery of photoelectric device control; Each module in the cold end Synchronization Control, has been accomplished the connection and the segmentation of whole switch through optical fiber.Vacuum switch connected mode in this patent only limits to series connection, can't realize that more the choosing of the intelligent vacuum switch of voltage levels is controlled mutually; And each module only controls at cold end, and insulation system is simplified inadequately.
The moving contact of vacuum switch bubble connects a pedestal through action bars in the Chinese patent 02229546.1 " low pressure is selected phase place divide-shut brake vacuum switch "; Measure power source voltage, current signal through voltage measurement element and current measurement device; And these voltages, current signal delivered to control circuit judge; Compare with the branch that sets, combined floodgate required value; With the break-make of control line bag electric current, thereby the control permanent magnet is accomplished switch and is carried out branch and lock in requirement phase sequence and phase place with separating with the adhesive of pedestal.This patent is equally only controlled at cold end, and insulation system is simplified inadequately.
Summary of the invention
The object of the present invention is to provide a kind of optically controlled modular intelligent vacuum switch intelligence to select phase control method; Be used for controlling the high-pressure vacuum switch that combines by the optically controlled modular intelligent vacuum switch individual module with phase-selecting function or a plurality of module series and parallel building blocks; Use high electronegative potential photoelectric isolation technology simultaneously; The realization high and low pressure is isolated, and simplifies insulation system.
Technical scheme of the present invention is: a kind of optically controlled modular intelligent vacuum switch intelligence is selected phase control method; Comprise and adopt the multiple mechanics of communication that comprises wireless telecommunications and serial communication etc.; Realize and power station computer multi computer communication, and can realize exchanging with the real time information of power station computer system; Adopt DSP digital signal processor and control technology, judge the best switching phase place of switch and carry out reliable operation; It is characterized in that: adopt optical fiber to carry out the control signal transmission, realize the high and low pressure isolation, simplify insulation system; Vacuum switch to the light-operated intelligent vacuum switch module series and parallel building blocks with phase-selecting function combine is controlled, and realizes that more the choosing of the intelligent vacuum switch of voltage levels is controlled mutually;
Specific as follows:
1) its DSP that is positioned at electronegative potential starts A/D conversion routine flow chart, when the whole finishing collecting of analog quantity, triggers the external interrupt of DSP, and that in interruption subroutine, carries out data reads and handle calculating;
2) when A/D interrupts, carry out data acquisition and FIR Filtering Processing, judge that arranged zero point during the output contrary sign, calculate zero point constantly with interpolation algorithm, restart and the zero clearing counter;
3) and then judge whether sampling number reaches predetermined number, if reached then calculate system cycle and dynamically update the interrupt cycle of timer, with the variation that guarantees that control system can the adaptive tracing mains frequency;
4) branch, reclosing command interruption and optical fiber interface reported information interrupt interrupting a shared external interrupt with A/D; As minute, when reclosing command interrupts, at first close and interrupt because divide, switching signal priority is the highest, avoids producing interrupt nesting; The value that reads counter then calculates the current time distance reference time constantly at zero point;
The branch, the feed motion Time Calculation that read each module again go out to arrive best branch, the needed time-delay of combined floodgate phase place;
After time-delay finishes, start the order that divides, closes a floodgate to the optical communication interface transmission;
5) when the optical fiber interface reported information is interrupted, at first judge it is which kind of information:, then go out branch, the feed motion time of action next time and upgrade to store according to the information prediction of transmitting if divide, close a floodgate back on off state information report; If manually or the definition status information checking, then relatively and upgrade and store each module new operate time;
6) just get into Infinite Cyclic after being positioned at the dsp system initialization of high potential, wait for the DSP that is positioned at electronegative potential send divide, the combined floodgate fiber-optic signal; As minute, during the combined floodgate fiber-optic signal, carry out interruption subroutine;
7) accept fiber-optic signal after, confirm to transmit the electrical signal to power drive unit behind separating brake or the reclosing command actuating switch; Write down the operate time and the state information of switch after action is accomplished, and send to the DSP that is positioned at electronegative potential through optical fiber.
Beneficial effect of the present invention is following:
1. intelligence is selected phase controller algorithm flexibility and reliability, can calculate the best switching phase place of switch quickly and accurately and carry out reliable operation;
2. intelligence selects the phase controller to combine really to realize cold end control, the hot end actuating of intelligent vacuum switch module with the optical fiber control technology;
3. intelligence selects the phase controller to adopt the mechanics of communication that comprises wireless telecommunications and serial communication, is convenient to realize that the real time information with the power station computer system exchanges;
4. intelligence selects phase controller control precision high, both can realize that the choosing of single module was controlled mutually, can realize that again the choosing of series and parallel composite module is controlled mutually.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch schematic diagram.
Accompanying drawing 2 is embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch and single light-operated intelligent vacuum switch module connection layout.
Accompanying drawing 3 is embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch and three-phase light-operated intelligent vacuum switch module connection layout.
Accompanying drawing 4 is embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch and the intelligent high-pressure vacuum switch connection layout that is combined by 18 light-operated intelligent vacuum switch module series and parallels.
Accompanying drawing 5 is an embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch electronegative potential part DSP main program flow chart.
Accompanying drawing 6 is that embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch electronegative potential part DSP starts A/D conversion routine flow chart.
Accompanying drawing 7 is an embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch electronegative potential part DSP response external interruption subroutine flow chart.
Accompanying drawing 8 is an embodiment of the invention intelligent phase selection control system for light-control module type intelligent vacuum switch high potential part DSP operational flowchart.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
As shown in Figure 1; A kind of intelligent phase selection control system for light-control module type intelligent vacuum switch; Mainly comprise collection of simulant signal unit, analog signal conditioner unit, A/D converter, DSP digital signal processor (comprising the DSP signal processor that is positioned at high potential and electronegative potential), utilize the high electronegative potential photoelectricity isolated location of optical fiber technology, the various communication interfaces that comprises serial ports and Ethernet interface etc., various transducer (can the sense switch position, signals such as control voltage and ambient temperature), system works power supply, system parameters and waveform recording unit, fault alarm unit and man-machine switching equipment etc.; Its connected mode is: the collection of simulant signal unit connects the analog signal conditioner unit; The analog signal conditioner unit connects A/D converter; A/D converter connects the DSP of electronegative potential, and electronegative potential DSP is connected with various communication interfaces is two-way, and electronegative potential DSP is connected with the fault alarm unit with waveform recording unit respectively; The system works power supply connects electronegative potential DSP; Man-machine switching equipment is connected with electronegative potential DSP is two-way, and the DSP digital signal processor of high and low current potential links together through the photoelectricity isolated location, and is two-way the connection with the photoelectricity isolated location; High potential DSP digital signal processor is connected with various transducers and real-time clock are two-way respectively, and the system works power supply connects high potential DSP digital signal processor.
Its operation principle is: intelligence selects phase control system electronegative potential part from PT and CT synchronous acquisition voltage and current signal, detects the zero point of voltage and current signal in real time through the quick mathematical operation of DSP digital signal processor of electronegative potential; When power station, distant place computer system, after Action Button or protective relaying device send action command on the spot; The DSP digital signal processor that intelligence is selected phase control system electronegative potential part is according in real time detected voltage and current signal zero point as a reference; Simultaneously according to (comprising the position of the switch, control voltage and ambient temperature etc. by the vacuum switch state information that intelligence selects phase control system high potential part DSP digital signal processor to collect of passing through that the photoelectricity isolating interface sends with certain communications protocol; Respectively from position sensor switch, voltage sensor and temperature sensor) come self adaptation to adjust the compensating parameter of switch motion time; Calculate and arrive the needed time-delay of optimal action phase place, time-delay finishes the back and sends branch, closing operation instruction to the photoelectricity isolating interface; Intelligence is sent branch, switching signal to power drive unit after selecting phase control system high potential part DSP digital signal processor to receive operational order according to certain communications protocol through the photoelectricity isolating interface, realizes branch, the combined floodgate actuating of intelligent vacuum switch; After the intelligent vacuum switch release; Intelligence selects phase control system high potential part DSP digital signal processor to be sent to the DSP digital signal processor that intelligence is selected phase controller electronegative potential part to new vacuum switch state information with certain communications protocol by the photoelectricity isolating interface again; Intelligence is selected the operating results such as action frequency, switching manipulation logout, switching manipulation transient current and voltage waveform of phase control system electronegative potential part DSP DSP CONTROL record switch; And be transmitted back to the power station computer system to vacuum switch state information and operating result through various communication interfaces, be convenient to the system diagnostics analysis.
As shown in Figure 2, intelligence is selected the connection layout of phase control system and single light-operated intelligent vacuum switch module.1 for having the optically controlled modular intelligent vacuum switch of phase-selecting function among the figure.Intelligence selects the high potential part of phase control system to connect together with the light-operated intelligent vacuum switch module among the figure, is in same current potential with it, i.e. high potential.Intelligence selects the high and low current potential of phase control system partly to link to each other through the optical fiber of photoelectricity isolated location; Make light-operated intelligent vacuum switch module electric part control the system signal transmission channel mutually and isolate, combine really to have realized cold end control, hot end actuating with the optical fiber control technology with the intelligence choosing.
As shown in Figure 3, intelligence is selected the connection layout of phase control system and three-phase light-operated intelligent vacuum switch module.Intelligence choosing is controlled system acquisition three-phase voltage, current signal mutually and is detected signal as a reference at its zero point in real time, through sending branches, switching signal to three light-operated intelligent vacuum switch modules after a series of mathematical computations and the logic control.Intelligence selects phase control system high potential part (be installed together with the light-operated intelligent vacuum switch module, omit among the figure) to convert the light signal that receives into the signal of telecommunication, three light-operated intelligent vacuum switch modules of actuating.
Be illustrated in figure 4 as the light-operated intelligent vacuum switch that intelligence selects the control of phase control system to be combined by 18 light-operated intelligent vacuum module series and parallel building blocks.Be connected the shared voltage of 6 light-operated intelligent vacuum switch modules that the series and parallel of every phase gets up, current reference zero point.Because the switch motion characteristic of each module is different, intelligence selects the phase control system to need self adaptation to adjust switch motion time of 18 modules, moves simultaneously to guarantee per 6 light-operated intelligent vacuum switch modules.
Intelligence as shown in Figure 5 is selected phase control method, and it is positioned at the DSP main program flow chart of electronegative potential.In order to guarantee the control system operate as normal, must self check during startup.System self-test is undesired, and record trouble also reports; After System self-test passed through, program got into initial phase, comprises the setting of DSP control register, the initialization of timer, internal data memory.Deposit the operate time of each module afterwards in.System do not receive on the spot/when telemechanical branch, reclosing command, accomplish line voltage and current signal synchronous acquisition, voltage and current signal detection at zero point, parameter such as liquid crystal display screen demonstration electrical network parameter and on off state and upload functions such as data for the power station computer system on the spot.Therefore open two timers: opening timing device 1, be used for producing IE A/D sampling, synchronous acquisition and the signal zero of accomplishing line voltage and current signal detect; Opening timing device 2 sends information such as electrical network parameter and on off state parameter at set intervals to liquid crystal display screen on the spot, owing to real-time of data display is not strong, do not realize in the interruption so be not placed on, and in main program every 0.5s update displayed.When manual check command, send manual check command to optical-fibre channel.When communication instruction, carry out communication through various communication interfaces and host computer.
Intelligence as shown in Figure 6 is selected phase control method, and its DSP that is positioned at electronegative potential starts A/D conversion routine flow chart.When the whole finishing collecting of analog quantity, trigger the external interrupt of DSP, that in interruption subroutine, carries out data reads and handles calculating, as shown in Figure 7.When A/D interrupts, carry out data acquisition and FIR Filtering Processing, judge that arranged zero point during the output contrary sign, calculate zero point constantly with interpolation algorithm, restart and zero clearing counter 3.And then judge whether sampling number reaches predetermined number, if reached then calculate system cycle and dynamically update the interrupt cycle of timer 1, with the variation that guarantees that control system can the adaptive tracing mains frequency.
As shown in Figure 7, branch, reclosing command interrupt and the optical fiber interface reported information interrupts interrupting a shared external interrupt with A/D.As minute, when reclosing command interrupts, at first close and interrupt because divide, switching signal priority is the highest, avoids producing interrupt nesting.The value that reads counter 3 then calculates the current time distance reference time constantly at zero point.The branch, the feed motion Time Calculation that read each module again go out to arrive best branch, the needed time-delay of combined floodgate phase place.After time-delay finishes, start the order that divides, closes a floodgate to the optical communication interface transmission.When the optical fiber interface reported information is interrupted, at first judge it is which kind of information:, then go out branch, the feed motion time of action next time and upgrade to store according to the information prediction of transmitting if divide, close a floodgate back on off state information report; If manually or the definition status information checking, then relatively and upgrade and store each module new operate time.
Intelligence as shown in Figure 8 is selected phase control method, and it is positioned at the DSP operational flowchart of high potential.Just get into Infinite Cyclic after the dsp system initialization, wait for that the DSP that is positioned at electronegative potential sends branch, combined floodgate fiber-optic signal.As minute, during the combined floodgate fiber-optic signal, carry out interruption subroutine.After accepting fiber-optic signal, confirm to transmit the electrical signal to power drive unit behind separating brake or the reclosing command actuating switch.Write down the operate time and the state information of switch after action is accomplished, and send to the DSP that is positioned at electronegative potential through optical fiber.
Claims (1)
1. an optically controlled modular intelligent vacuum switch intelligence is selected phase control method; Comprise and adopt the multiple mechanics of communication that comprises wireless telecommunications and serial communication etc.; Realize and power station computer multi computer communication, and can realize exchanging with the real time information of power station computer system; Adopt DSP digital signal processor and control technology, judge the best switching phase place of switch and carry out reliable operation; It is characterized in that: adopt optical fiber to carry out the control signal transmission, realize the high and low pressure isolation, simplify insulation system; Vacuum switch to the light-operated intelligent vacuum switch module series and parallel building blocks with phase-selecting function combine is controlled, and realizes that more the choosing of the intelligent vacuum switch of voltage levels is controlled mutually;
Specific as follows:
1) its DSP that is positioned at electronegative potential starts A/D conversion routine flow chart, when the whole finishing collecting of analog quantity, triggers the external interrupt of DSP, and that in interruption subroutine, carries out data reads and handle calculating;
2) when A/D interrupts, carry out data acquisition and FIR Filtering Processing, judge that arranged zero point during the output contrary sign, calculate zero point constantly with interpolation algorithm, restart and the zero clearing counter;
3) and then judge whether sampling number reaches predetermined number, if reached then calculate system cycle and dynamically update the interrupt cycle of timer, with the variation that guarantees that control system can the adaptive tracing mains frequency;
4) branch, reclosing command interruption and optical fiber interface reported information interrupt interrupting a shared external interrupt with A/D; As minute, when reclosing command interrupts, at first close and interrupt because divide, switching signal priority is the highest, avoids producing interrupt nesting; The value that reads counter then calculates the current time distance reference time constantly at zero point;
The branch, the feed motion Time Calculation that read each module again go out to arrive best branch, the needed time-delay of combined floodgate phase place;
After time-delay finishes, start the order that divides, closes a floodgate to the optical communication interface transmission;
5) when the optical fiber interface reported information is interrupted, at first judge it is which kind of information:, then go out branch, the feed motion time of action next time and upgrade to store according to the information prediction of transmitting if divide, close a floodgate back on off state information report; If manually or the definition status information checking, then relatively and upgrade and store each module new operate time;
6) just get into Infinite Cyclic after being positioned at the dsp system initialization of high potential, wait for the DSP that is positioned at electronegative potential send divide, the combined floodgate fiber-optic signal; As minute, during the combined floodgate fiber-optic signal, carry out interruption subroutine;
7) accept fiber-optic signal after, confirm to transmit the electrical signal to power drive unit behind separating brake or the reclosing command actuating switch; Write down the operate time and the state information of switch after action is accomplished, and send to the DSP that is positioned at electronegative potential through optical fiber.
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| CN101630863B true CN101630863B (en) | 2012-11-28 |
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| CN102377488B (en) * | 2010-08-13 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Optical fiber control device as well as optical fiber communication network and use method thereof |
| CN101968522B (en) * | 2010-08-27 | 2013-07-17 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN105846547A (en) * | 2016-06-14 | 2016-08-10 | 江西航智电气有限公司 | High-voltage intelligent switch |
| CN106909088B (en) * | 2017-04-28 | 2023-11-24 | 国家电网公司 | Phase selection program controller for power transmission and transformation starting and debugging |
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| CN201282069Y (en) * | 2008-10-28 | 2009-07-29 | 国网武汉高压研究院 | Light control modularization intelligent vacuum switch with phase-selecting function |
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| CN201282069Y (en) * | 2008-10-28 | 2009-07-29 | 国网武汉高压研究院 | Light control modularization intelligent vacuum switch with phase-selecting function |
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