CN103713249A - On-line identification method of operation test state parameters of converter valve - Google Patents
On-line identification method of operation test state parameters of converter valve Download PDFInfo
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- CN103713249A CN103713249A CN201310740958.XA CN201310740958A CN103713249A CN 103713249 A CN103713249 A CN 103713249A CN 201310740958 A CN201310740958 A CN 201310740958A CN 103713249 A CN103713249 A CN 103713249A
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Abstract
The invention provides an on-line identification method of operation test state parameters of a converter valve. The method includes the steps of protection detection, negative voltage detection, recovery period detection, zero-cross detection, optical channel detection and state parameter self-detection in sequence. According to the on-line identification method of the operation test state parameters of the converter valve, intelligent whole-process control over an operation test can be achieved, the operating state and test parameters of the converter valve are monitored and identified in an on-line mode through an interface conversion device without manual intervention, the method is simple, flexible and easy to implement, test continuity and test reliability are guaranteed, and test efficiency and the utilization ratio of equipment are improved.
Description
Technical field
The present invention relates to a kind of recognition methods, be specifically related to a kind of ONLINE RECOGNITION method of converter valve operating test state parameter.
Background technology
Triggering monitoring and driving defencive function in high voltage tandem thyristor valve operational process are to be completed by gate level circuit.In the widely used high-power thyristor converter valve of Survey of Flexible AC Transmission System and direct current transportation field, conventionally adopt 5 pulse code modes at present, comprise: trigger dipulse, zero passage detection pulse, negative voltage detection pulse and optical channel and detect pulse, valve base electronic device, according to the return pulse signal of receiving, judges the operation duty of valve.
For the high voltage tandem thyristor valve of the different size of specific occasion use is carried out to running test; designed general-purpose interface device; the triggering that this device can send test unit and sense command convert the instruction that different valves can be carried out to; simultaneously can also be in operational process the state parameter of ONLINE RECOGNITION valve; and the state parameter of valve is turned back to valve control system workstation show in real time; the inline diagnosis that can realize valve state parameter detects, and at valve state, occurs early warning in time and protection when abnormal.
After general-purpose interface device access pilot system, in the stage of powering on, generally need according to different pet valves, after the operation such as manually complete that in advance the connection of interface arrangement and software initialization arrange, start again test, often carried out will repeating to arrange and operation after a test, after test unit power-off, also needed to re-start parameter setting.This has not only increased the time that test is prepared, and has also reduced test efficiency.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of ONLINE RECOGNITION method of converter valve operating test state parameter, can realize intellectuality, the Whole Process Control of running test, the running status of converter valve and test parameters are by interface switching device on-line monitoring and identification, do not need human intervention, reach the easy-to-use object of simple and flexible, guaranteed test continuity and reliability, improved test efficiency and plant factor.
In order to realize foregoing invention object, the present invention takes following technical scheme:
A kind of ONLINE RECOGNITION method that the invention provides converter valve operating test state parameter, said method comprising the steps of:
Step 1: protect detection;
Step 2: carry out negative voltage detection, convalescence detection and zero passage detection;
Step 3: carry out optical channel detection and state parameter from detecting.
In protection testing process, valve base electronic device sends trigger command to interface switching device, if interface switching device receives the return pulse that trigger board is sent, thinks and has protection action.
In negative voltage testing process, from triggering, be continued until voltage zero-cross constantly constantly, when trigger board detects thyristor two ends and becomes negative voltage, to interface switching device, send return pulse.
In convalescence testing process, during from voltage zero-cross, be carved into the peaked moment of negative voltage, trigger board detects thyristor two ends always for negative voltage and reach maximal value through 1/4 cycle, to interface switching device, sends return pulse.
In zero passage detection process, during from negative voltage maximal value, be carved into voltage zero-cross constantly, trigger board detects thyristor two ends and becomes positive voltage from negative voltage, to interface switching device, sends return pulse.
In optical channel testing process, during from voltage zero-cross, be carved into the triggering of next cycle constantly, interface switching device is received the return pulse that trigger board is sent, and thinks that optical channel can normal communication, the parameter that gets the hang of afterwards self-checking detection process.
In test parameters self-checking detection process, interface switching device sends test pulse to trigger board, trigger board is also returned to backout feature pulse to the state parameter of thyristors at different levels in the converter valve detecting in this cycle after receiving test pulse simultaneously, interface switching device is determined the running status of converter valve according to characteristic pulse, adjust and call corresponding test parameters, and the state parameter of converter valve is sent to workstation showing.
Protection detection in described method, negative voltage detection, convalescence detection, zero passage detection, optical channel detect and state parameter is one-period from detecting every 20 milliseconds, loop.
Compared with prior art, beneficial effect of the present invention is:
1. improved the intelligent degree of pilot system, reliability and continuously service ability obtain lifting;
2. the fast response time of system, can realize plug and play and on-line monitoring, is easy to expansion and upgrading;
3. easy to use and flexible, has simplified experiment process, has improved test efficiency;
4. by system bus etc., can complete online test parameters sets and converter valve monitoring running state automatically;
5. can realize intellectuality, the Whole Process Control of running test, the running status of converter valve and test parameters are by interface switching device on-line monitoring and identification;
6. do not need human intervention, reached the easy-to-use object of simple and flexible, guaranteed test continuity and reliability, improved test efficiency and plant factor.
Accompanying drawing explanation
Fig. 1 is the ONLINE RECOGNITION Method And Principle figure of converter valve operating test state parameter;
Fig. 2 is the ONLINE RECOGNITION method coding principle figure of converter valve operating test state parameter.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1 and Fig. 2, the invention provides a kind of ONLINE RECOGNITION method of converter valve operating test state parameter, said method comprising the steps of:
Step 1: protect detection;
Step 2: carry out negative voltage detection, convalescence detection and zero passage detection;
Step 3: carry out optical channel detection and state parameter from detecting.
In protection testing process, valve base electronic device sends trigger command to interface switching device, if interface switching device receives the return pulse that trigger board is sent, thinks and has protection action.
In negative voltage testing process, from triggering, be continued until voltage zero-cross constantly constantly, when trigger board detects thyristor two ends and becomes negative voltage, to interface switching device, send return pulse.
In convalescence testing process, during from voltage zero-cross, be carved into the peaked moment of negative voltage, trigger board detects thyristor two ends always for negative voltage and reach maximal value through 1/4 cycle, to interface switching device, sends return pulse.
In zero passage detection process, constantly, trigger board detects thyristor two ends and becomes positive voltage from negative voltage during from negative voltage maximal value, to be carved into voltage zero-cross (just being become by negative), to interface switching device, sends return pulse.
In optical channel testing process, during from voltage zero-cross (just being become by negative), be carved into the triggering of next cycle constantly, interface switching device is received the return pulse that trigger board is sent, and thinks that optical channel can normal communication, the parameter that gets the hang of afterwards self-checking detection process.
In test parameters self-checking detection process, interface switching device sends test pulse to trigger board, trigger board is also returned to backout feature pulse to the state parameter of thyristors at different levels in the converter valve detecting in this cycle after receiving test pulse simultaneously, interface switching device is determined the running status of converter valve according to characteristic pulse, adjust and call corresponding test parameters, and the state parameter of converter valve is sent to workstation showing.
Protection detection in described method, negative voltage detection, convalescence detection, zero passage detection, optical channel detect and state parameter is one-period from detecting every 20 milliseconds, loop.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (8)
1. an ONLINE RECOGNITION method for converter valve operating test state parameter, is characterized in that: said method comprising the steps of:
Step 1: protect detection;
Step 2: carry out negative voltage detection, convalescence detection and zero passage detection;
Step 3: carry out optical channel detection and state parameter from detecting.
2. the ONLINE RECOGNITION method of converter valve operating test state parameter as claimed in claim 1; it is characterized in that: in protection testing process; valve base electronic device sends trigger command to interface switching device; if interface switching device receives the return pulse that trigger board is sent, think and have protection action.
3. the ONLINE RECOGNITION method of converter valve operating test state parameter as claimed in claim 1, it is characterized in that: in negative voltage testing process, from triggering, be continued until that voltage zero-cross constantly constantly, when trigger board detects thyristor two ends and becomes negative voltage, to interface switching device, send return pulse.
4. the ONLINE RECOGNITION method of converter valve operating test state parameter as claimed in claim 1, it is characterized in that: in convalescence testing process, during from voltage zero-cross, be carved into the peaked moment of negative voltage, it is negative voltage and reach maximal value through 1/4 cycle that trigger board detects thyristor two ends always, to interface switching device, sends return pulse.
5. the ONLINE RECOGNITION method of converter valve operating test state parameter as claimed in claim 1, it is characterized in that: in zero passage detection process, during from negative voltage maximal value, be carved into voltage zero-cross constantly, trigger board detects thyristor two ends and becomes positive voltage from negative voltage, to interface switching device, sends return pulse.
6. the ONLINE RECOGNITION method of converter valve operating test state parameter as claimed in claim 1, it is characterized in that: in optical channel testing process, during from voltage zero-cross, be carved into the triggering of next cycle constantly, interface switching device is received the return pulse that trigger board is sent, think that optical channel can normal communication, the parameter that gets the hang of afterwards self-checking detection process.
7. the ONLINE RECOGNITION method of converter valve operating test state parameter as claimed in claim 1, it is characterized in that: in test parameters self-checking detection process, interface switching device sends test pulse to trigger board, trigger board is also returned to backout feature pulse to the state parameter of thyristors at different levels in the converter valve detecting in this cycle after receiving test pulse simultaneously, interface switching device is determined the running status of converter valve according to characteristic pulse, adjust and call corresponding test parameters, and the state parameter of converter valve is sent to workstation showing.
8. the ONLINE RECOGNITION method of the converter valve operating test state parameter as described in as arbitrary in claim 2-7; it is characterized in that: the protection detection in described method, negative voltage detection, convalescence detection, zero passage detection, optical channel detect and state parameter is one-period from detecting every 20 milliseconds, loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310740958.XA CN103713249B (en) | 2013-12-27 | A kind of ONLINE RECOGNITION method of converter valve operating test state parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310740958.XA CN103713249B (en) | 2013-12-27 | A kind of ONLINE RECOGNITION method of converter valve operating test state parameter |
Publications (2)
| Publication Number | Publication Date |
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| CN103713249A true CN103713249A (en) | 2014-04-09 |
| CN103713249B CN103713249B (en) | 2016-11-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106646099A (en) * | 2015-10-29 | 2017-05-10 | 全球能源互联网研究院 | High-voltage direct-current power transmission TTM board card fault positioning system and fault positioning method thereof |
| CN109239587A (en) * | 2017-07-10 | 2019-01-18 | 南京南瑞继保电气有限公司 | A kind of thyristor valve test macro based on transparent forwarding |
| CN109490740A (en) * | 2018-11-26 | 2019-03-19 | 中电普瑞电力工程有限公司 | IGCT valve module |
| CN109613425A (en) * | 2019-01-02 | 2019-04-12 | 西安西电电力***有限公司 | Converter valve test macro and test method |
| CN109669435A (en) * | 2018-11-30 | 2019-04-23 | 国网河南省电力公司检修公司 | A kind of high voltage direct current converter valve control system test device |
| WO2021147772A1 (en) * | 2020-01-21 | 2021-07-29 | 华南理工大学 | Dc converter valve state detection method based on port current sequence characteristics |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646099A (en) * | 2015-10-29 | 2017-05-10 | 全球能源互联网研究院 | High-voltage direct-current power transmission TTM board card fault positioning system and fault positioning method thereof |
| CN106646099B (en) * | 2015-10-29 | 2019-06-14 | 全球能源互联网研究院 | A kind of D.C. high voltage transmission TTM board faults positioning system and its Fault Locating Method |
| CN109239587A (en) * | 2017-07-10 | 2019-01-18 | 南京南瑞继保电气有限公司 | A kind of thyristor valve test macro based on transparent forwarding |
| CN109490740A (en) * | 2018-11-26 | 2019-03-19 | 中电普瑞电力工程有限公司 | IGCT valve module |
| CN109669435A (en) * | 2018-11-30 | 2019-04-23 | 国网河南省电力公司检修公司 | A kind of high voltage direct current converter valve control system test device |
| CN109613425A (en) * | 2019-01-02 | 2019-04-12 | 西安西电电力***有限公司 | Converter valve test macro and test method |
| WO2021147772A1 (en) * | 2020-01-21 | 2021-07-29 | 华南理工大学 | Dc converter valve state detection method based on port current sequence characteristics |
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