CN101609993A - A kind of self adaptation leading time implementation method of measure and control device synchronization function - Google Patents
A kind of self adaptation leading time implementation method of measure and control device synchronization function Download PDFInfo
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- CN101609993A CN101609993A CNA2009101812180A CN200910181218A CN101609993A CN 101609993 A CN101609993 A CN 101609993A CN A2009101812180 A CNA2009101812180 A CN A2009101812180A CN 200910181218 A CN200910181218 A CN 200910181218A CN 101609993 A CN101609993 A CN 101609993A
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Abstract
The invention discloses a kind of self adaptation leading time implementation method of measure and control device synchronization function. it is characterized in that also being applied to automatically the method for the process same period by actual measurement leading time in the running, the leading time that takes place in the dynamic tracking controlling organization running changes, and realizes the self adaptation leading time same period.Specifically may further comprise the steps: start (1) same period; (2) differentiate the same period; (3) differentiating the result same period carries out; (4) leading time is measured and is detected; (5) the self adaptation leading time is handled.The present invention can effectively reduce working amount of periodical repair, avoids because the generation of the inaccurate non-Switching Synchronization incident that causes of leading time improves system's power supply quality.
Description
Technical field
The present invention relates to the intelligent measuring and control device of electric power system, relate in particular to the design implementation method that the leading time automatic tracing and measuring is used in the measure and control device synchronization function.Belong to the power automation technical field.
Background technology
In transformer station or factories and miness automation control application, when switch disconnector is incorporated into the power networks closing operation,, improve power supply quality in order to guarantee the stability of electrical network, the inspection requirement of the same period of closing a floodgate is all arranged usually.The asynchronous switch-on both sides synchronous voltage that promptly requires to close a floodgate satisfies the certain condition same period and just allows to close a floodgate, the same period, criterion had voltage magnitude, frequency, the phase angle, when these conditions all satisfy, consider that there is certain constant time lag in combined floodgate object mechanism in transmission process, appliance arrangement satisfies in the criterion of the condition same period needs in seizure and considers the time-delay influence, just introduce the notion of leading time, promptly device need put on the basis in advance that certain hour sends the order of closing a floodgate in prediction the same period, in the time of could guaranteeing the switch motion success just in time is the some same period, and this leading time has reacted the transmission time of switch disconnector mechanism.Traditional measurement leading time method is by the feedback signal of voltage waveform and synchronous device with the double oscillograph record down, calculates leading time with the way of number grid, and this method precision is low, and wiring is loaded down with trivial details.The parameter that the present common with good grounds circuit breaker of way producer provides is provided with or process is tested carefully and neatly definite value of defensive position, all there is certain sum of errors inaccuracy in saying of this mode strictness, because the leading time of the switchgear of different interval can not be in full accord, more or less there is certain difference distribution, and might there be certain drift in the leading time of equipment each switchgear in running, if all fixing at interval, all use same setting value obviously to have certain drawback, it is loaded down with trivial details to cut adjusting of definite value, in actual applications because though leading time is provided with the inaccurate synchronization function that causes having reinstated, the actual consequence that non-Switching Synchronization might occur.
Here propose the notion of " self adaptation leading time ", also be applied to improving one's methods of the process same period automatically, remedy the weak point that fixedly installs leading time, improve the asynchronous switch-on quality by actual measurement in the running.
Summary of the invention
In order to solve the deficiencies in the prior art, technical problem to be solved by this invention is to provide a kind of automatic tracing and measuring leading time, also be applied to improving one's methods of the process same period automatically by actual measurement in the running, the leading time that takes place in the dynamic tracking controlling organization running changes, remedy the weak point that fixedly installs leading time, improve the asynchronous switch-on quality, avoid the non-Switching Synchronization phenomenon to take place.
Technical problem to be solved by this invention is achieved through the following technical solutions.
A kind of self adaptation leading time implementation method of measure and control device synchronization function is by actual measurement leading time in the running and is applied to the process same period automatically, the leading time that takes place in the dynamic tracking controlling organization running changes, and realizes the self adaptation leading time function same period.The same period, the design of self adaptation leading time function comprised three fundamentals: self adaptation leading time function is thrown and is moved back pressing plate, leading time definite value Tdqset, leading time measurement criterion setting (opening into criterion, electric current criterion).
The self adaptation leading time implementation method of above-mentioned a kind of measure and control device synchronization function is characterized in that: may further comprise the steps:
1) determines self adaptation leading time function input, set in advance a leading time Tsdq, leading time is set measures criterion, select to open into criterion or electric current criterion;
2) send out asynchronous switch-on, trigger and start the same period, whether device detects self adaptation leading time Tzdq parameter effective, it is effective at first to detect self adaptation leading time effective marker, differentiating self adaptation leading time Tzdq again satisfies | differentiate during Tzdq-Tsdq|/Tsdq＜leading time percentage for effectively, the suggestion of leading time percentage is between 40% to 60%, effectively then uses this self adaptation leading time Tzdq this same period, the invalid set point Tsdq that then uses the leading time definite value;
3) enter the same period and catch, satisfied then this end same period of the condition same period (voltage magnitude, frequency, phase angle) in the reset time same period, the same period, condition satisfied, and then sent out the outlet order same period and write down the time T 1 of issuing an order;
4) enter leading time and measure the inverse signal discriminating processing, as be set to open, then detect and open into close the record displacement time by a minute change into criterion; As be set to the electric current criterion, then detect stream is arranged after, record the stream time, leading time is measured return time and is designated as T2, direct this process of end during no return results;
5) calculate self adaptation leading time Tzdq=T2-T1, result of calculation (power down is not lost) is preserved in exportable demonstration, and is applied to automatically in later same period of the process.
The self adaptation leading time implementation method of aforesaid a kind of measure and control device synchronization function, in described step 1), move back pressing plate by the throwing of self adaptation leading time function and select whether to enable the self adaptation leading time same period, use the self adaptation leading time when enabling, use the leading time definite value that can adjust in the process same period when withdrawing from, and it is only effective when self adaptation leading time function pressing plate drops into that described leading time is measured the criterion setting.
The beneficial effect that the present invention reached: by adopting the automatic tracing and measuring leading time, and the method for using this measurement result is automatically used, can effectively reduce working amount of periodical repair, avoid because the generation of the inaccurate non-Switching Synchronization incident that causes of leading time improves system's power supply quality.
Description of drawings
Fig. 1 is self adaptation leading time implementation procedure figure of the present invention.
Embodiment
The self adaptation leading time implementation method of a kind of measure and control device synchronization function of the present invention is by actual measurement leading time in the running and is applied to the process same period automatically, the leading time that takes place in the dynamic tracking controlling organization running changes, and realizes the self adaptation leading time function same period.
Fig. 1 is self adaptation leading time implementation procedure figure of the present invention.Fig. 1 is divided into five parts with whole implementation process: start (1) same period; (2) differentiate the same period; (3) differentiating the result same period carries out; (4) leading time is measured and is detected; (5) the self adaptation leading time is handled.Self adaptation leading time function design self adaptation leading time function is thrown and is moved back pressing plate, leading time definite value, leading time measurement criterion setting (opening into criterion, electric current criterion).Move back pressing plate by the throwing of self adaptation leading time function and select whether to enable the self adaptation leading time same period, drop into expression and use the self adaptation leading time, use the leading time definite value that can adjust in the process same period when withdrawing from, and it is only effective when self adaptation leading time function pressing plate drops into that leading time is measured the criterion setting.
Determine self adaptation leading time function input, set in advance a leading time Tsdq, leading time measurement criterion is set selects to open into criterion or electric current criterion.(1) starts the same period: send out asynchronous switch-on, trigger and start the same period, device at first detects self adaptation leading time effective marker for effective, differentiating self adaptation leading time Tzdq again satisfies | and Tzdq-Tsdq|/Tsdq＜leading time percentage was differentiated for effective the invalid set point of then using the leading time definite value as 50% o'clock; (2) differentiate the same period and differentiate the result (3) same period and carry out: enter the same period and catch, the condition same period (voltage magnitude, frequency, phase angle) does not satisfy then this end same period in the reset time same period, the same period, condition satisfied, and then sent out the outlet order same period and write down the time T 1 of issuing an order; (4) leading time is measured and is detected: enter leading time and measure the inverse signal discriminating processing, as be set to open into criterion, then detect and open into closed the record displacement time by a minute change; As be set to the electric current criterion, then detect stream is arranged after, record the stream time, leading time is measured return time and is designated as T2, the same period, return results overtimely then finished this operating process.(5) the self adaptation leading time is handled: calculate self adaptation leading time Tzdq=T2-T1, result of calculation (power down is not lost) is preserved in exportable demonstration, and is applied to automatically in later same period of the process, and this, control procedure finished same period.
The foregoing description does not limit the present invention in any form, and all technical design methods that mode obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.
Claims (3)
1. the self adaptation leading time implementation method of a measure and control device synchronization function, it is characterized in that also being applied to automatically the method for the process same period by actual measurement leading time in the running, the leading time that takes place in the dynamic tracking controlling organization running changes, and realizes the self adaptation leading time function same period.Described implementation method may further comprise the steps:
1) determines self adaptation leading time function input, set in advance a leading time Tsdq, leading time is set measures criterion, select to open into criterion or electric current criterion;
2) send out asynchronous switch-on, trigger the startup same period, whether device detects self adaptation leading time Tzdq parameter effective, effectively then uses this self adaptation leading time Tzdq this same period, the invalid set point Tsdq that then uses the leading time definite value;
3) enter the same period and catch, satisfied then this end same period of the condition same period in the reset time same period, the same period, condition satisfied, and then sent out the outlet order same period and write down the time T 1 of issuing an order;
4) enter leading time and measure the inverse signal discriminating processing, as be set to open, then detect and open into close the record displacement time by a minute change into criterion; As be set to the electric current criterion, then detect stream is arranged after, record the stream time, leading time is measured return time and is designated as T2, direct this process of end during no return results;
5) calculate self adaptation leading time Tzdq=T2-T1, result of calculation is preserved in exportable demonstration, and is applied to automatically in later same period of the process.
2. the self adaptation leading time implementation method of a kind of measure and control device synchronization function according to claim 1, it is characterized in that: in described step 1), move back pressing plate by the throwing of self adaptation leading time function and select whether to enable the self adaptation leading time same period, use the self adaptation leading time when enabling, use the leading time definite value that can adjust in the process same period when withdrawing from, and it is only effective when self adaptation leading time function pressing plate drops into that described leading time is measured the criterion setting.
3. the self adaptation leading time implementation method of a kind of measure and control device synchronization function according to claim 1, it is characterized in that: in described step 2) in, whether effective process is to detect self adaptation leading time Tzdq parameter, whether at first detect self adaptation leading time effective marker effective, differentiating self adaptation leading time Tzdq again satisfies | and for effectively, leading time percentage is between 40% to 60% during Tzdq-Tsdq|/Tsdq＜leading time percentage.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516940A (en) * | 2017-08-01 | 2017-12-26 | 广东电网有限责任公司江门供电局 | A kind of dispatching automation straighforward operation synchronization function intelligent distinguishing method |
| CN108072834A (en) * | 2017-12-14 | 2018-05-25 | 云南电网有限责任公司文山供电局 | A kind of same period intelligent detecting method for realizing that distant place combined floodgate is grid-connected, device and system |
| CN109932646A (en) * | 2019-03-15 | 2019-06-25 | 西门子电力自动化有限公司 | The online test method of leading time, device and system in simultaneous interconnecting |
| CN115579962A (en) * | 2022-12-07 | 2023-01-06 | 国网新源控股有限公司 | Synchronization grid-connection optimization method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201042U (en) * | 1985-04-01 | 1986-06-11 | 浙江省机械科学研究所 | Constant leading time type quasi-synchronizer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516940A (en) * | 2017-08-01 | 2017-12-26 | 广东电网有限责任公司江门供电局 | A kind of dispatching automation straighforward operation synchronization function intelligent distinguishing method |
| CN108072834A (en) * | 2017-12-14 | 2018-05-25 | 云南电网有限责任公司文山供电局 | A kind of same period intelligent detecting method for realizing that distant place combined floodgate is grid-connected, device and system |
| CN109932646A (en) * | 2019-03-15 | 2019-06-25 | 西门子电力自动化有限公司 | The online test method of leading time, device and system in simultaneous interconnecting |
| CN109932646B (en) * | 2019-03-15 | 2022-01-28 | 西门子电力自动化有限公司 | Online detection method, device and system for lead time in synchronization grid connection |
| CN115579962A (en) * | 2022-12-07 | 2023-01-06 | 国网新源控股有限公司 | Synchronization grid-connection optimization method and device |
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Owner name: NANJING GUODIAN NANJING-AUTOMATION POWER GRID AUTO Free format text: FORMER OWNER: NANJING AUTOMATION CO., LTD., CHINA ELECTRONICS CORP. Effective date: 20130305 |
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