CN105093102A - Verification method of sulfur hexafluoride density relay - Google Patents
Verification method of sulfur hexafluoride density relay Download PDFInfo
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- CN105093102A CN105093102A CN201510407885.1A CN201510407885A CN105093102A CN 105093102 A CN105093102 A CN 105093102A CN 201510407885 A CN201510407885 A CN 201510407885A CN 105093102 A CN105093102 A CN 105093102A
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Abstract
Disclosed in the invention is a verification method of a sulfur hexafluoride density relay. The verification method comprises the following steps that: S1, an air inlet end of a sulfur hexafluoride density relay is connected with a testing air source and a comparison pressure table is connected in parallel in an air inlet line of the sulfur hexafluoride density relay and the testing air source; and S2, latching return value detection, alarm return detection, alarm value detection, and latching value detection are carried out on the sulfur hexafluoride density relay. According to the invention, compared with the existing detection method, the method has the following beneficial effects: whether the sulfur hexafluoride density relay takes an action or not can be determined precisely; the motion sensitivity of the sulfur hexafluoride density relay can be measured and an error value can be calculated; and with the error value, a data support can be provided for determining whether the sulfur hexafluoride density relay can be used continuously or needs to be replaced immediately by the enterprise.
Description
Technical field
The present invention relates to field of measuring technique, particularly relate to a kind of school detecting method of sulfur hexafluoride density relay.
Background technology
Sulfur hexafluoride gas has superior insulating property, arc quenching characteristic and stable chemical property, is widely used in high-tension switch gear.And the density of sulfur hexafluoride gas and purity are directly connected to performance and the reliability service of equipment, such as, the leakage of sulfur hexafluoride gas will cause its density to decline, and the water cut of gas in equipment may be made to increase, thus has influence on insulating property and the break performance of equipment.
For monitoring sulfur hexafluoride gas density, high-tension switch gear is all configured with gas density relay (also have and claim density monitor, density controller, density meter etc.).In engineering practice, the density ratio directly measuring sulfur hexafluoride gas is more difficult, usually measures its density with gaseous tension when 20 DEG C.So, the density monitor in fact namely change of the gaseous tension of reduction to 20 DEG C in monitoring equipment, and using the decline relative to 20 DEG C of specified gaseous tensions how much as alarming value and locking value.When gas density drops to the alarm pressure value of regulation, send alerting signal, to carry out tonifying Qi in time.When sulfur hexafluoride gas density continues to drop to locking force value, send block signal, the equipment such as corresponding isolating switch operate with regard to not allowing, to ensure equipment and security of system.Sulfur hexafluoride gas density relay and tensimeter integrate by novel product, can for carrying out pressure monitoring at any time.Due to many reasons, in sulfur hexafluoride gas density relay long-time running, performance may change, and even loses monitoring effect.Such as, after being failure to actuate for a long time, there is the phenomenons such as action bite or dumb, poor contact of contacts.Also the temperature compensation performance that also there will be had is deteriorated, and when variation of ambient temperature, may cause sulfur hexafluoride gas density relay misoperation.Thus, it is very necessary for carrying out verifying in good time.
Summary of the invention
Based on the technical matters that above-mentioned background technology exists, the present invention proposes a kind of school detecting method of sulfur hexafluoride density relay, so that precision judges sulfur hexafluoride density relay operation precision.
The present invention proposes a kind of school detecting method of sulfur hexafluoride density relay, comprise the following steps:
S1, by the inlet end of sulfur hexafluoride density relay with test source of the gas connects, and sulfur hexafluoride density relay with test source of the gas inlet line in parallel connection contrast tensimeter;
S2, sulfur hexafluoride density relay carried out to the detection of locking recovery value, report to the police reply detect, alarming value detects and locking value detects;
Locking recovery value detects: at ambient temperature, and sulfur hexafluoride density relay is under zero pressure state, to sulfur hexafluoride density relay inflation boosting until the locking relay action of sulfur hexafluoride density relay, and relay force value F1 under recording current environmental temperature and contrast pressure tabular value F01;
Report to the police and reply detected value: on the basis of force value F1, continue to sulfur hexafluoride density relay inflation boosting until the alarm relay action of sulfur hexafluoride density relay, and relay force value F2 under recording current environmental temperature and contrast pressure tabular value F02;
Alarming value detects: at ambient temperature, and under the state that pressure is greater than warning recovery value in sulfur hexafluoride density relay, to sulfur hexafluoride density relay bleed until the alarm relay action of sulfur hexafluoride density relay, and relay force value F3 under recording current environmental temperature and contrast pressure tabular value F03;
Locking value detects: be down on the basis of force value F3 in force value, continue to sulfur hexafluoride density relay bleed until the locking relay action of sulfur hexafluoride density relay, and relay force value F4 under recording current environmental temperature and contrast pressure tabular value F04;
Calculate: respectively the relay force value F1 surveyed under environment temperature, F2, F3, F4 and contrast pressure tabular value F01, F02, F03, F04 are converted into sulfur hexafluoride density relay equivalent pressure value F11 at a certain temperature, F21, F31, F41 and F011, F021, F031, F041, then the equivalent pressure value F11 of gained, F21, F31 and F41 be the locking recovery value that sulfur hexafluoride density relay at a certain temperature surveys detect, report to the police reply detected value, alarming value detects and locking value detects; Gained equivalent pressure value F011, F021, F031 and F041 detect at locking recovery value for contrasting tensimeter at a certain temperature, the control value of replying during detection, alarming value detection and locking value detect and surveying of reporting to the police;
Contrast: sulfur hexafluoride density relay tested the equivalent pressure value F11 of gained, control value F011, F021, F031 and F041 of F21, F31 and F41 and contrast tensimeter test gained reply with the locking of sulfur hexafluoride density relay defined respectively, report to the police and reply, to report to the police and the standard value of locking contrasts;
If the equivalent pressure value of sulfur hexafluoride density relay test gained does not conform to standard value, and the control value contrasting tensimeter test gained conforms to standard value, then test effectively;
If the equivalent pressure value of sulfur hexafluoride density relay test gained does not conform to standard value, and the control value contrasting tensimeter test gained does not conform to standard value, then test invalidation, retests;
If the equivalent pressure value of sulfur hexafluoride density relay test gained conforms to standard value, and the control value contrasting tensimeter test gained does not conform to standard value, then test invalidation, retests;
If the equivalent pressure value of sulfur hexafluoride density relay test gained conforms to standard value, and the control value contrasting tensimeter test gained conforms to standard value, then test effectively;
Judge: judge whether sulfur hexafluoride density relay meets the requirements and calculate error amount according to Validity Test result;
Result: underproof sulfur hexafluoride density relay is carried out overhauling and school inspection again after maintenance.
Preferably, manometric precision is contrasted more than 0.4 grade.
Preferably, described is sulfur hexafluoride to gas medium used during sulfur hexafluoride density relay inflation boosting.
The present invention is by a contrast tensimeter in parallel in inlet line, the pressure detecting function utilizing contrast tensimeter and sulfur hexafluoride density relay self at ambient temperature the action of synchronous acquisition sulfur hexafluoride density relay time force value, and force value gathered at such a temperature is converted into sulfur hexafluoride density relay equivalent pressure value at a certain temperature; Again by the equivalent pressure value and sulfur hexafluoride density relay standard value at a certain temperature that gather conversion gained are contrasted, thus judge whether sulfur hexafluoride density relay action sensitivity at ambient temperature meets the requirements, and calculate error amount.
In sum, the present invention not only can judge sulfur hexafluoride density relay whether action accurately than existing detection method, the action sensitivity of sulfur hexafluoride density relay can also be measured and can error amount be calculated, utilizing error amount can judge whether sulfur hexafluoride density relay continues to use still immediately replacing to provide Data support for enterprise.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
In the present embodiment, for the ease of adding up and comparing, using the relative pressure of sulfur hexafluoride when 20 DEG C as standard value.When detecting, the sulfur hexafluoride force value measured at certain environment temperature all will be converted to equivalent pressure value when its corresponding 20 DEG C, thus judges the performance of density monitor.
A school detecting method for sulfur hexafluoride density relay, comprises the following steps: comprise the following steps:
S1, the inlet end of sulfur hexafluoride density relay and sulfur hexafluoride gas tank to be connected, and in the inlet line of sulfur hexafluoride density relay with sulfur hexafluoride gas tank in parallel to a precision more than 0.4 grade according to tensimeter;
S2, sulfur hexafluoride density relay carried out to the detection of locking recovery value, report to the police reply detect, alarming value detects and locking value detects;
Locking recovery value detects: at ambient temperature, when sulfur hexafluoride density relay is zero pressure, take sulfur hexafluoride gas as inflation medium, the speed certain to sulfur hexafluoride density relay is slowly inflated; When the locking relay action of sulfur hexafluoride density relay, relay force value F1 under record current environmental temperature and contrast pressure tabular value F01, and equivalent pressure value F11 when F1 and F01 being converted into 20 DEG C and F011, F11 are the equivalent pressure value of locking recovery value 20 DEG C time that sulfur hexafluoride density relay is surveyed; F011 is the equivalent pressure value of control value 20 DEG C time that contrast tensimeter is surveyed.
Report to the police and reply detected value: on the basis of force value F1, take sulfur hexafluoride gas as inflation medium, continue slowly to inflate with certain speed to sulfur hexafluoride density relay; When the alarm relay action of density monitor, relay force value F2 under record current environmental temperature and contrast pressure tabular value F02, and equivalent pressure value F21 when being converted into 20 DEG C and F021, F21 are the equivalent pressure value of warning recovery value 20 DEG C time that sulfur hexafluoride density relay is surveyed; F021 is the equivalent pressure value of control value 20 DEG C time that contrast tensimeter is surveyed.
Alarming value detects: at ambient temperature, when pressure in sulfur hexafluoride density relay is greater than warning recovery value, slowly exit with certain speed; When the alarm relay action of sulfur hexafluoride density relay, relay force value F3 under record current environmental temperature and contrast pressure tabular value F03, and equivalent pressure value F31 when being converted into 20 DEG C and F031, F31 are the equivalent pressure value of alarming value 20 degree time that sulfur hexafluoride density relay is surveyed; F031 is the equivalent pressure value of control value 20 DEG C time that contrast tensimeter is surveyed.
Locking value detects: be down on the basis of force value F3 in force value, continue slowly to exit with certain speed to sulfur hexafluoride density relay; When the locking relay action of sulfur hexafluoride density relay, relay force value F4 under record current environmental temperature and contrast pressure tabular value F04, and equivalent pressure value F41 when being converted into 20 DEG C and F041, F41 are the equivalent pressure value of locking value 20 DEG C time that sulfur hexafluoride density relay is surveyed; F041 is the equivalent pressure value of control value 20 DEG C time that contrast tensimeter is surveyed.
Sulfur hexafluoride density relay tested the equivalent pressure value F11 of gained, control value F011, F021, F031 and 0F41 of F21, F31 and F41 and contrast tensimeter test gained reply with the locking of sulfur hexafluoride density relay defined respectively, report to the police and reply, to report to the police and the standard value of locking contrasts, if the equivalent pressure value of sulfur hexafluoride density relay test gained does not conform to standard value, and the control value contrasting tensimeter test gained conforms to standard value, then test effectively; If the equivalent pressure value of sulfur hexafluoride density relay test gained does not conform to standard value, and the control value contrasting tensimeter test gained does not conform to standard value, then test invalidation, retests; If the equivalent pressure value of sulfur hexafluoride density relay test gained conforms to standard value, and the control value contrasting tensimeter test gained does not conform to standard value, then test invalidation, retests; If the equivalent pressure value of sulfur hexafluoride density relay test gained conforms to standard value, and the control value contrasting tensimeter test gained conforms to standard value, then test effectively; Judge whether sulfur hexafluoride density relay meets the requirements and calculate error amount according to Validity Test result;
Finally, underproof sulfur hexafluoride density relay is carried out overhauling and after maintenance again school inspection.
The present invention is by a contrast tensimeter in parallel in inlet line, the pressure detecting function utilizing contrast tensimeter and sulfur hexafluoride density relay self at ambient temperature the action of synchronous acquisition sulfur hexafluoride density relay time force value, and force value gathered at such a temperature is converted into sulfur hexafluoride density relay equivalent pressure value at a certain temperature; Again by the equivalent pressure value and sulfur hexafluoride density relay standard value at a certain temperature that gather conversion gained are contrasted, thus judge whether sulfur hexafluoride density relay action sensitivity at ambient temperature meets the requirements, and calculate error amount.Sulfur hexafluoride density relay whether action not only can be judged accurately than existing detection method, the action sensitivity of sulfur hexafluoride density relay can also be measured and can error amount be calculated, utilizing error amount can judge whether sulfur hexafluoride density relay continues to use still immediately replacing to provide Data support for enterprise.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a school detecting method for sulfur hexafluoride density relay, is characterized in that, comprise the following steps:
S1, by the inlet end of sulfur hexafluoride density relay with test source of the gas connects, and sulfur hexafluoride density relay with test source of the gas inlet line in parallel connection contrast tensimeter;
S2, sulfur hexafluoride density relay carried out to the detection of locking recovery value, report to the police reply detect, alarming value detects and locking value detects;
Locking recovery value detects: at ambient temperature, and sulfur hexafluoride density relay is under zero pressure state, to sulfur hexafluoride density relay inflation boosting until the locking relay action of sulfur hexafluoride density relay, and relay force value F1 under recording current environmental temperature and contrast pressure tabular value F01;
Report to the police and reply detected value: on the basis of force value F1, continue to sulfur hexafluoride density relay inflation boosting until the alarm relay action of sulfur hexafluoride density relay, and relay force value F2 under recording current environmental temperature and contrast pressure tabular value F02;
Alarming value detects: at ambient temperature, and under the state that pressure is greater than warning recovery value in sulfur hexafluoride density relay, to sulfur hexafluoride density relay bleed until the alarm relay action of sulfur hexafluoride density relay, and relay force value F3 under recording current environmental temperature and contrast pressure tabular value F03;
Locking value detects: be down on the basis of force value F3 in force value, continue to sulfur hexafluoride density relay bleed until the locking relay action of sulfur hexafluoride density relay, and relay force value F4 under recording current environmental temperature and contrast pressure tabular value F04;
Calculate: respectively the relay force value F1 surveyed under environment temperature, F2, F3, F4 and contrast pressure tabular value F01, F02, F03, F04 are converted into sulfur hexafluoride density relay equivalent pressure value F11 at a certain temperature, F21, F31, F41 and F011, F021, F031, F041, then the equivalent pressure value F11 of gained, F21, F31 and F41 be the locking recovery value that sulfur hexafluoride density relay at a certain temperature surveys detect, report to the police reply detected value, alarming value detects and locking value detects; Gained equivalent pressure value F011, F021, F031 and F041 detect at locking recovery value for contrasting tensimeter at a certain temperature, the control value of replying during detection, alarming value detection and locking value detect and surveying of reporting to the police;
Contrast: sulfur hexafluoride density relay tested the equivalent pressure value F11 of gained, control value F011, F021, F031 and F041 of F21, F31 and F41 and contrast tensimeter test gained reply with the locking of sulfur hexafluoride density relay defined respectively, report to the police and reply, to report to the police and the standard value of locking contrasts;
If the equivalent pressure value of sulfur hexafluoride density relay test gained does not conform to standard value, and the control value contrasting tensimeter test gained conforms to standard value, then test effectively;
If the equivalent pressure value of sulfur hexafluoride density relay test gained does not conform to standard value, and the control value contrasting tensimeter test gained does not conform to standard value, then test invalidation, retests;
If the equivalent pressure value of sulfur hexafluoride density relay test gained conforms to standard value, and the control value contrasting tensimeter test gained does not conform to standard value, then test invalidation, retests;
If the equivalent pressure value of sulfur hexafluoride density relay test gained conforms to standard value, and the control value contrasting tensimeter test gained conforms to standard value, then test effectively;
Judge: judge whether sulfur hexafluoride density relay meets the requirements and calculate error amount according to Validity Test result;
Result: underproof sulfur hexafluoride density relay is carried out overhauling and school inspection again after maintenance.
2. the school detecting method of sulfur hexafluoride density relay according to claim 1, is characterized in that, contrasts manometric precision more than 0.4 grade.
3. the school detecting method of sulfur hexafluoride density relay according to claim 1, is characterized in that, described is sulfur hexafluoride to gas medium used during sulfur hexafluoride density relay inflation boosting.
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| CN201510407885.1A CN105093102A (en) | 2015-07-10 | 2015-07-10 | Verification method of sulfur hexafluoride density relay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110187265A (en) * | 2019-05-29 | 2019-08-30 | 知为力(成都)科技有限公司 | A kind of density monitor calibration equipment |
| CN110361648A (en) * | 2019-07-23 | 2019-10-22 | 国网上海市电力公司 | A kind of sulfur hexafluoride gas density relay method of calibration and system |
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| CN1987412A (en) * | 2006-12-27 | 2007-06-27 | 郑州赛奥电子有限公司 | SF6 gas density relay corrector and its detecting method |
| CN200986521Y (en) * | 2006-12-27 | 2007-12-05 | 郑州赛奥电子有限公司 | SF6 gas density relay check meter |
| CN101937060A (en) * | 2010-09-09 | 2011-01-05 | 辽宁省电力有限公司抚顺供电公司 | Checking system and checking method for sulfur hexafluoride density relay |
| CN201796123U (en) * | 2010-09-09 | 2011-04-13 | 辽宁省电力有限公司抚顺供电公司 | Checking system of sulfur hexafluoride density relay |
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2015
- 2015-07-10 CN CN201510407885.1A patent/CN105093102A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987412A (en) * | 2006-12-27 | 2007-06-27 | 郑州赛奥电子有限公司 | SF6 gas density relay corrector and its detecting method |
| CN200986521Y (en) * | 2006-12-27 | 2007-12-05 | 郑州赛奥电子有限公司 | SF6 gas density relay check meter |
| CN101937060A (en) * | 2010-09-09 | 2011-01-05 | 辽宁省电力有限公司抚顺供电公司 | Checking system and checking method for sulfur hexafluoride density relay |
| CN201796123U (en) * | 2010-09-09 | 2011-04-13 | 辽宁省电力有限公司抚顺供电公司 | Checking system of sulfur hexafluoride density relay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187265A (en) * | 2019-05-29 | 2019-08-30 | 知为力(成都)科技有限公司 | A kind of density monitor calibration equipment |
| CN110361648A (en) * | 2019-07-23 | 2019-10-22 | 国网上海市电力公司 | A kind of sulfur hexafluoride gas density relay method of calibration and system |
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