CN103808480A - Nuclear power station transformer gas relay seismic test method - Google Patents
Nuclear power station transformer gas relay seismic test method Download PDFInfo
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- CN103808480A CN103808480A CN201210456786.9A CN201210456786A CN103808480A CN 103808480 A CN103808480 A CN 103808480A CN 201210456786 A CN201210456786 A CN 201210456786A CN 103808480 A CN103808480 A CN 103808480A
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- transformer
- nuclear power
- power station
- test method
- buchholz relay
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Abstract
The invention discloses a nuclear power station transformer gas relay seismic test method which includes the following process: conducting frequency conversion test which includes that relays are filled with transformer oil, an indication device is connected at a tripping point and arranged on a vibration table with the vibration test frequency as 8-20Hz sweep frequency, the frequency is maintained for 1 minute respectively on the X axis, the Y axis and the Z axis, the acceleration is over 0.25g, and an indication result of the indication device is recorded. By means of the nuclear power station transformer gas relay seismic test method, the anti-seismic performance of gas relays of various types is tested and evaluated, and the method can provide support for type selection of the transformer gas relays. Due to the fact that the gas relays are installed on a transformer, it is unreasonable to put forward an anti-seismic requirement or standard from the view point of the gas relays singly, and the anti-seismic requirement is put forward from the view point of the whole transformer. On the type selection of the transformer gas relays, the production safety requirement can be met as long as the anti-seismic parameters are not lower than the anti-seismic requirement of a main body transformer.
Description
[technical field]
The present invention relates to a kind of power transformer, particularly Buchholz relay wherein.
[background technology]
Buchholz relay is one of critical elements in the protection of power transformer non electrical quantity; generally be arranged between transformer body or load ratio bridging switch and conservator; when breaking down when producing gas or producing quick oil flow surge in transformer body or load ratio bridging switch inside; Buchholz relay is by light, heavy fault contact action; to connect the control loop of specifying, and send in time signal or automatically excise transformer.
Transformer is in the time suffering outside passing through property short-circuit current or no-load percussion, Buchholz relay may be affected because of transformer body vibration, or under the effect of the external force such as earthquake, directly bear the effect of vibration, likely cause Buchholz relay misoperation, especially heavy gas fault contact action, can cause transformer tripping operation, affect the available rate of transformer.
At present, according to concerned countries standard, the shockproof requirements of Buchholz relay reaches 4g; And under earthquake operating mode, the low frequency antidetonation operating mode of transformer is 4-20Hz, the vibration acceleration upper limit is 0.25g.
[summary of the invention]
Fundamental purpose of the present invention is: a kind of transformer Buchholz relay shock test method is provided, comprises following process:
Frequency conversion test: relay is filled with transformer oil, connect with indicating device in trip-point, be placed in to add and shake on platform, vibration-testing frequency is 8～20Hz frequency sweep, X, Y, Z axis is each to be continued more than 1 minute, and acceleration is more than 0.25g, records the indication result of indicating device.
Above-mentioned transformer Buchholz relay shock test method, in embodiment wherein, each lasting 80 seconds of X, Y, Z axis test duration,
Above-mentioned transformer Buchholz relay shock test method, in embodiment wherein, testing acceleration is that 4g or testing acceleration are 2g.
Above-mentioned transformer Buchholz relay shock test method, in embodiment wherein, also comprise and determine frequency test: the transformer oil that relay is filled to clean, connect with indicating device at heavy gas action connection point, be placed in to add and shake on platform, carry out vibrational excitation with the test frequency of fixing in three directions of X, Y, Z axis, record the indication result of indicating device.
Above-mentioned transformer Buchholz relay shock test method, in embodiment wherein, it is fixed that the test duration is at least 1 minute frequently, described fixing test frequency adopts 100Hz, when acceleration amplitude is considered maximum on-the-spot no-load transformer input, 2 times of nargin of Buchholz relay vibration acceleration measured value, are 4g.
Above-mentioned transformer Buchholz relay shock test method, in embodiment wherein, described vibration-testing adopts sinusoidal wave, and described indicating device adopts multimeter.
By transformer Buchholz relay shock test method of the present invention, various Buchholz relay anti-seismic performance is carried out to testing evaluation, can provide theoretical support clearly for the type selecting of transformer Buchholz relay: in view of Buchholz relay is mounted on transformer, separately propose shockproof requirements or standard is irrational from the angle of Buchholz relay, need to propose shockproof requirements from the angle of whole voltage transformer system.When design of transformer, conventionally can resist eight grades more than seismic intensity, through consulting " GB/T17742-2008 ", it is 0.25g that eight grades of seismic intensity are converted to acceleration peak-peak, be far smaller than the earthquake resistant level of each Buchholz relay producer, visible, at present domestic standard " JB/T9647-1999 Buchholz relay " is too harsh to the shockproof requirements of Buchholz relay.Therefore,, in the type selecting of transformer Buchholz relay, as long as being not less than the shockproof requirements of main body transformer, its antidetonation parameter can meet production safety requirement.
[embodiment]
Below by specific embodiment, the present invention is described in further detail.
In order to study the anti-seismic performance of Buchholz relay, multiple Buchholz relay has been carried out to laboratory vibration-testing, it comprises following process.
Frequency conversion test
According to the vibration frequency under earthquake operating mode, the transformer oil that relay is filled to clean, connect with indicating device in trip-point, then shake on platform adding, make sinusoidal vibration test, be 8～20Hz frequency sweep by vibration-testing frequency selection purposes, each 80 seconds of X, Y, Z axis, acceleration is that 4g and 2g respectively do once, observes tested relay output node have or not moment shake or closing phenomenon, tripping operation contact is received to the indicating devices such as multimeter, check contact on-state.
Fixed test frequently
The transformer oil that relay is filled to clean, connect with multimeter at heavy gas action connection point, then shake on platform adding, make sinusoidal vibration test, shown in 3 directions of X, Y, Z axis, carry out vibrational excitation, test period is at least 1 minute, and test frequency is 100Hz, observes heavy gas contact action situation.When acceleration amplitude is considered maximum on-the-spot no-load transformer input, 2 times of nargin of Buchholz relay vibration acceleration measured value, are 4g.
Embodiment mono-
Tested person object: German TU DR80, bicylindrical body float-type, dry-reed contact
Its heavy gas operating principle is the connection baffle plate of the heavy gas float of oil stream impulsion in connecting pipe, connects baffle plate and drives heavy gas float to decline, and dry-reed contact in floating block is closed and connect heavy gas protective circuit.
Test result:
Frequency sweep test:
Fixed test frequently: pass through
Embodiment bis-
Tested person object: Britain P & B Weir 3DE/HF2, two float-types, mercury contact
The principle of its heavy gas action is that oil stream impacts the baffle plate on floating block, and baffle plate drives the mercury contact in floating block to connect heavy gas trip(ping) circuit.
Test result:
Frequency sweep test:
Fixed test frequently: pass through
Embodiment tri-
Tested person object: domestic QJ-80, spring catch is board-like, dry-reed contact
The principle of its heavy gas action is oil stream impact baffle plate, and baffle plate drives lower tongue tube inner contact to connect heavy gas trip(ping) circuit with magnet attraction.
Test result:
Frequency sweep test:
Fixed test frequently:
Due to the structure difference of Buchholz relay, therefore the earthquake resistant level of Buchholz relay does not have unified standard in the world, and the vibration standard that each Buchholz relay producer provides is all not identical:
Domestic Buchholz relay (being only applicable to the QJ series Buchholz relay of magnet baffle-type, dry-reed contact structure): in accordance with GB: 4～20Hz, acceleration is 4g;
Germany EMB (two float-ball types, dry-reed contact): 2～200Hz, acceleration is 2g;
Germany TU(bicylindrical body float-type, dry-reed contact): 5～15Hz, acceleration is 2g;
The two float-types of Britain P & B Weir(, mercury contact): 100Hz frequency is frequency surely, 0.25mm amplitude (peak is to peak), being scaled acceleration is 2g.
Known by the interpretation of result to the various embodiments described above:
(1) the action situation under the test of higher frequency band according to several relays, the anti-seismic performance that can judge common frequency excitation (50～100Hz) in the time bearing transformer operation or put into operation is all better, but owing to lacking corresponding actual measurement vibration data, when transformer is suffered to outside passing through property short circuit, the anti-seismic performance of Buchholz relay there is no method evaluation.
(2) in the frequency sweep vibration test result of low-frequency range, the performance that shows the anti-low frequency of Buchholz relay (8～20Hz) vibration of different structure is differentiated, magnet baffle-type is more much better than the Buchholz relay anti-seismic performance of float-type, be the oil flow surge due to the generation of transformer oil under Vibration Condition, the buoyancy that overcomes float is easier than the pulling force that overcomes spring; And for the Buchholz relay that is all float-type, the relay of mercury contact is more less better than the anti-seismic performance of the relay of dry-reed contact, this is because mercury exists certain mobility, in continuous vibration processes, mercury there will be rock and desultory connect or disconnect tripping operation control contact, so that in the unturned situation of float, also likely make the contact malfunction of tripping, and dry-reed contact does not exist the influence factor of this respect, therefore dry-reed contact is more winning than mercury contact aspect anti-seismic performance.
(3) in view of Buchholz relay is mounted on transformer, therefore can not from the angle of Buchholz relay, shockproof requirements or standard be proposed separately, need to shockproof requirements be proposed from the angle of whole voltage transformer system.When design of transformer, conventionally can resist eight grades more than seismic intensity, through consulting " GB/T17742-2008 ", it is 0.25g that eight grades of seismic intensity are converted to acceleration peak-peak, is far smaller than the earthquake resistant level of each Buchholz relay producer.Therefore, at present domestic standard " JB/T9647-1999 Buchholz relay " is too harsh to the shockproof requirements of Buchholz relay.Therefore, in the type selecting of transformer Buchholz relay, as long as its antidetonation parameter is not less than the requirement of main body transformer.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a nuclear power station transformer Buchholz relay shock test method, comprises following process:
Frequency conversion test: relay is filled with transformer oil, connect with indicating device in trip-point, be placed in to add and shake on platform, vibration-testing frequency is 8～20Hz frequency sweep, X, Y, Z axis is each to be continued more than 1 minute, and acceleration is more than 0.25g, records the indication result of indicating device.
2. nuclear power station transformer Buchholz relay antidetonation type Selection Test method as claimed in claim 1, it is characterized in that: also comprise and determine frequency test: the transformer oil that relay is filled to clean, connect with indicating device at heavy gas action connection point, be placed in to add and shake on platform, carry out vibrational excitation with the test frequency of fixing in three directions of X, Y, Z axis, record the indication result of indicating device.
3. nuclear power station transformer Buchholz relay shock test method as claimed in claim 2, is characterized in that: each lasting 80 seconds of X, Y, Z axis test duration,
4. nuclear power station transformer Buchholz relay shock test method as claimed in claim 2, is characterized in that: testing acceleration is 4g.
5. nuclear power station transformer Buchholz relay shock test method as claimed in claim 2, is characterized in that: testing acceleration is 2g.
6. nuclear power station transformer Buchholz relay shock test method as described in claim 2, is characterized in that: the described fixed time of test is frequently at least 1 minute.
7. nuclear power station transformer Buchholz relay shock test method as claimed in claim 6, is characterized in that: described fixing test frequency adopts 100Hz.
8. nuclear power station transformer Buchholz relay shock test method as claimed in claim 6, is characterized in that: 2 times of nargin of Buchholz relay vibration acceleration measured value when acceleration amplitude is considered maximum on-the-spot no-load transformer input are 4g.
9. the nuclear power station transformer Buchholz relay shock test method as described in any one in claim 1-8, is characterized in that: described vibration-testing adopts sinusoidal wave.
10. the nuclear power station transformer Buchholz relay shock test method as described in any one in claim 1-8, is characterized in that: described indicating device adopts multimeter.
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| CN201210456786.9A CN103808480A (en) | 2012-11-14 | 2012-11-14 | Nuclear power station transformer gas relay seismic test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210456786.9A CN103808480A (en) | 2012-11-14 | 2012-11-14 | Nuclear power station transformer gas relay seismic test method |
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| CN103808480A true CN103808480A (en) | 2014-05-21 |
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| CN201210456786.9A Pending CN103808480A (en) | 2012-11-14 | 2012-11-14 | Nuclear power station transformer gas relay seismic test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441769A (en) * | 2016-09-19 | 2017-02-22 | 武汉大学 | Method for detecting anti-mechanical-vibration performance of high-voltage wireless power supply system |
| CN109387344A (en) * | 2018-09-21 | 2019-02-26 | 北京广利核系统工程有限公司 | The Aseismic Analytical Method identified again after a kind of change for structure member design |
| CN112924124A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Vibration table for testing vibration characteristic of gas relay and testing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100671733B1 (en) * | 2005-11-16 | 2007-01-19 | 경신공업 주식회사 | Jig for shaking test of fuse with relay box |
| CN201034763Y (en) * | 2007-04-28 | 2008-03-12 | 郑州赛奥电子有限公司 | Gas-actuated relay calibration stand |
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2012
- 2012-11-14 CN CN201210456786.9A patent/CN103808480A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100671733B1 (en) * | 2005-11-16 | 2007-01-19 | 경신공업 주식회사 | Jig for shaking test of fuse with relay box |
| CN201034763Y (en) * | 2007-04-28 | 2008-03-12 | 郑州赛奥电子有限公司 | Gas-actuated relay calibration stand |
Non-Patent Citations (1)
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| 黄华 等: "气体继电器抗震性能研究", 《华东电力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441769A (en) * | 2016-09-19 | 2017-02-22 | 武汉大学 | Method for detecting anti-mechanical-vibration performance of high-voltage wireless power supply system |
| CN109387344A (en) * | 2018-09-21 | 2019-02-26 | 北京广利核系统工程有限公司 | The Aseismic Analytical Method identified again after a kind of change for structure member design |
| CN109387344B (en) * | 2018-09-21 | 2020-10-02 | 北京广利核系统工程有限公司 | Anti-seismic analysis method for re-identification after structural member design change |
| CN112924124A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Vibration table for testing vibration characteristic of gas relay and testing method |
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Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city Guangdong province 518031 17 19 floor Applicant after: China General Nuclear Power Corporation Applicant after: Dayawan Nuclear Power Running Management Co., Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city Guangdong province 518031 17 19 floor Applicant before: China Guangdong Nuclear Power Group Co., Ltd. Applicant before: Dayawan Nuclear Power Running Management Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINA GUANGDONG NUCLEAR POWER GROUP CO., LTD. TO: CHINA GENERAL NUCLEAR GROUP CO., LTD. |
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Application publication date: 20140521 |