CN103022983B - A kind of array klystron thermal effect over-current protection method - Google Patents
A kind of array klystron thermal effect over-current protection method Download PDFInfo
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- CN103022983B CN103022983B CN201210369828.5A CN201210369828A CN103022983B CN 103022983 B CN103022983 B CN 103022983B CN 201210369828 A CN201210369828 A CN 201210369828A CN 103022983 B CN103022983 B CN 103022983B
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Abstract
The invention discloses a kind of array klystron thermal effect over-current protection method, include the klystron array with many klystrons, select shunt; Be serially connected with current-limiting resistance between the negative electrode of every klystron and the negative pole of high voltage source, the collector of every klystron connects corresponding shunt, the positive pole of the other end access high voltage source of each shunt; Make filter circuit; Select Isolation Amplifier Module; Make protective circuit; Two binding posts are drawn at the two ends of every shunt; access filter circuit, electrooptic conversion module respectively; the output signal access Isolation Amplifier Module of filter circuit; protective circuit is accessed after small voltage signal is converted to current signal; protective circuit judges whether electric current exceedes secure threshold; Logical processing unit drives electrooptic conversion module according to judged result, sends light signal and controls high voltage source output state.The present invention is applied in EAST nuclear fusion device discharge test spring in 2012, when repeatedly klystron overcurrent occurs, successfully protects klystron.
Description
technical field:
The present invention relates to klystron Over Current Protection System, particularly relate to a kind of array klystron thermal effect over-current protection method.
background technology:
In the MW class continuous wave microwave system formed for core with many klystrons, klystron is the device of the most expensive most fragile, is the most important thing of whole system protection to their protection.In general, the instrument transformer method that adopts detects klystron body and main circuit current more, protects klystron in conjunction with fast protection circuit.But this method can not change detected current signal slowly, if Body-current slowly increases above the safe range of klystron, klystron may damage, and cause heavy losses.
Summary of the invention
The object of this invention is to provide the system of klystron electric current that a kind of suitable detection slowly changes and klystron protection, to solve the safety problem that klystron faces.
For achieving the above object, the technical solution used in the present invention is:
A kind of array klystron thermal effect over-current protection method, includes the klystron array with many klystrons, it is characterized in that, comprise the following steps:
(1) respectively according to klystron Body-current, cathode current and collector current characteristics, shunt is selected;
(2) be serially connected with a current-limiting resistance between the negative electrode of every klystron and the negative pole of high voltage source, the collector of every klystron connects corresponding shunt, the positive pole of the other end access high voltage source of each shunt;
(3) characteristic when cutting off according to klystron power supply high voltage, and interference signal when klystron normally works, microwave system ground wire existed makes filter circuit;
(4) detected current characteristics and treatment circuit input requirements selection Isolation Amplifier Module is considered;
(5) designing and making protective circuit is required according to klystron protection;
(6) protected location includes filter circuit, isolating amplifier circuit, protective circuit, Logical processing unit, the electrooptic conversion module of connecting successively, and protected location is connected in parallel on the two ends of shunt;
(7) two binding posts are drawn at the two ends of every shunt; access filter circuit, electrooptic conversion module respectively; the output signal access Isolation Amplifier Module of filter circuit; protective circuit is accessed after small voltage signal is converted to current signal; protective circuit judges whether electric current exceedes secure threshold; Logical processing unit drives electrooptic conversion module according to judged result, sends light signal and controls high voltage source output state.
Series limiting resistor, in order to limit main circuit current; Shunt, as the device detecting collector electric current; Many the klystron bodys of being powered by same group of high voltage source are connected a shunt.
Advantage of the present invention is:
The present invention is applied in EAST nuclear fusion device discharge test spring in 2012, when repeatedly klystron overcurrent occurs, successfully protects klystron.
Accompanying drawing explanation
Fig. 1 is many array klystron thermal effect overcurrent protection structural representations.
Fig. 2 is the structured flowchart of protected location.
Fig. 3 is filter circuit schematic diagram.
Embodiment
Now protect slowly for 2.45GHz/4MW continuous wave microwave system klystron, non-limiting examples is described below:
As shown in Figure 1, 2, array klystron thermal effect over-current protection method in 2.45GHz/4MW continuous wave microwave system, includes the klystron array with 20 klystrons 2, comprises the following steps:
(1) respectively according to klystron 2 Body-current, cathode current and collector current characteristics, shunt 1 is selected;
(2) be serially connected with the current-limiting resistance 3 of 20 ohm between the negative electrode of every klystron 2 and the negative pole of high voltage source 6, the collector of every klystron 2 connects corresponding shunt 1, the positive pole of the other end access high voltage source 6 of each shunt 1;
(3) characteristic when cutting off according to klystron 2 power supply high voltage, and interference signal when klystron 2 normally works, microwave system ground wire existed makes filter circuit 5;
(4) detected current characteristics and treatment circuit input requirements selection Isolation Amplifier Module 7 is considered;
(5) designing and making protective circuit 8 is required according to klystron 2 protection;
(6) protected location 4 includes filter circuit 5, isolating amplifier circuit 7, protective circuit 8, Logical processing unit 9, the electrooptic conversion module 10 of connecting successively, and protected location 4 is connected in parallel on the two ends of shunt 1;
(7) two binding posts are drawn at the two ends of every shunt 1; access filter circuit 5, electrooptic conversion module 10 respectively; the output signal access Isolation Amplifier Module 7 of filter circuit 5; protective circuit 8 is accessed after small voltage signal is converted to current signal; protective circuit 8 judges whether electric current exceedes secure threshold; Logical processing unit 9 drives electrooptic conversion module 10 according to judged result, sends light signal and controls high voltage source output state to protect klystron 2.
Klystron is the 200kW klystron manufactured by Russian ISTOK research institute, whole system has 20 klystrons, every 5 klystrons are powered by one group of high voltage source 6, Body-current required by it, cathode current and collector electric current safety value are 130mA, 15A and 15A respectively, and the shunt of corresponding selection is respectively 500m Ω, 5m Ω and 5m Ω;
As shown in Figure 3, the interference signal existed on microwave system ground wire when cutting off due to klystron power supply high voltage and klystron normally works causes detection and protected location misoperation to filter circuit;
Isolation Amplifier Module is according to klystron electric current and selected shunt, and amplifier is input as millivolt level, and considers anti-interference and isolation features, selects the M2VF2-OA-M/N Isolation Amplifier Module that M.SYSTEM company produces, and it is 0 ~ 100mA electric current that this module exports.
Claims (1)
1. an array klystron thermal effect over-current protection method, includes the klystron array with many klystrons, it is characterized in that, comprise the following steps:
(1) respectively according to klystron Body-current, cathode current and collector current characteristics, shunt is selected;
(2) be serially connected with a current-limiting resistance between the negative electrode of every klystron and the negative pole of high voltage source, the collector of every klystron connects corresponding shunt, the positive pole of the other end access high voltage source of each shunt;
(3) characteristic when cutting off according to klystron power supply high voltage, and interference signal when klystron normally works, microwave system ground wire existed makes filter circuit;
(4) detected current characteristics and treatment circuit input requirements selection Isolation Amplifier Module is considered;
(5) designing and making protective circuit is required according to klystron protection;
(6) protective circuit includes filter circuit, Isolation Amplifier Module, protected location, Logical processing unit, the electrooptic conversion module of connecting successively, and protected location is connected in parallel on the two ends of shunt;
(7) two binding posts are drawn at the two ends of every shunt; access filter circuit, electrooptic conversion module respectively; the output signal access Isolation Amplifier Module of filter circuit; Isolation Amplifier Module accesses protected location after small voltage signal is converted to current signal; protected location judges whether electric current exceedes secure threshold; Logical processing unit drives electrooptic conversion module according to judged result, sends light signal and controls high voltage source output state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369828.5A CN103022983B (en) | 2012-09-28 | 2012-09-28 | A kind of array klystron thermal effect over-current protection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210369828.5A CN103022983B (en) | 2012-09-28 | 2012-09-28 | A kind of array klystron thermal effect over-current protection method |
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| CN103022983A CN103022983A (en) | 2013-04-03 |
| CN103022983B true CN103022983B (en) | 2015-08-05 |
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| CN201210369828.5A Expired - Fee Related CN103022983B (en) | 2012-09-28 | 2012-09-28 | A kind of array klystron thermal effect over-current protection method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760433B (en) * | 2013-12-24 | 2016-08-24 | 中国科学院等离子体物理研究所 | A kind of heavy impulse current analog detection method |
| CN103795023B (en) * | 2014-01-20 | 2016-09-28 | 中国科学院等离子体物理研究所 | A kind of combination type klystron array body crosses stream recognition method |
| CN109085544B (en) * | 2018-10-29 | 2023-11-03 | 中国电子科技集团公司第十四研究所 | Circuit for improving stability of transmitting signal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201017254Y (en) * | 2007-04-05 | 2008-02-06 | 扬州双鸿电子有限公司 | Direct current constant voltage constant current source special for high voltage velocity modulated valve device |
| CN101478139A (en) * | 2009-01-22 | 2009-07-08 | 中国科学院等离子体物理研究所 | Multi-path large power velocity modulated valve overcurrent real-time protection apparatus having on-line self-detection function |
-
2012
- 2012-09-28 CN CN201210369828.5A patent/CN103022983B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201017254Y (en) * | 2007-04-05 | 2008-02-06 | 扬州双鸿电子有限公司 | Direct current constant voltage constant current source special for high voltage velocity modulated valve device |
| CN101478139A (en) * | 2009-01-22 | 2009-07-08 | 中国科学院等离子体物理研究所 | Multi-path large power velocity modulated valve overcurrent real-time protection apparatus having on-line self-detection function |
Non-Patent Citations (4)
| Title |
|---|
| A New Crowbar Driver for the MIT-Bates Linear Accelerator High-power RF Sources;A.Zolfaghari等;《Proceeding of EPAC 2002》;20021231;第2655-2657页 * |
| EAST装置大功率速调管保护系统研制;冯建强等;《核电子学与探测技术》;20100630;第30卷(第6期);第743-747页 * |
| HL-2A装置低杂波系统低压实时保护性能分析;李秀娟等;《核聚变与等离子体物理》;20060331;第26卷(第1期);第27-30页 * |
| 速调管的保护和过流监控系统的研制;罗琛;《万方学位论文数据库》;20110525;第1-19页 * |
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Granted publication date: 20150805 Termination date: 20160928 |