CN102053204A - Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) - Google Patents
Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) Download PDFInfo
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- CN102053204A CN102053204A CN 201110009235 CN201110009235A CN102053204A CN 102053204 A CN102053204 A CN 102053204A CN 201110009235 CN201110009235 CN 201110009235 CN 201110009235 A CN201110009235 A CN 201110009235A CN 102053204 A CN102053204 A CN 102053204A
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Abstract
The invention discloses an uninterrupted testing method for a 1mA voltage of a 330kV metal zinc oxide arrester (MOA). The method comprises the following steps: disconnecting a counter; connecting a high voltage output end of a direct current generator, a direct current ammeter and the MOA; and connecting a voltage testing end with a direct current microammeter, wherein when the reading of the direct current ammeter is up to 1mA, the reading of the direct current microammeter is the 1mA voltage of the MOA. In the uninterrupted testing method for the 1mA voltage of the 330kV MOA, only the grounding of the counter of the MOA is needed to open so as to test the 1mA voltage; as grounding points on a bus are unmoved, upper-segment leads at the grounding points on the bus are opened or disassembled during the testing process, thereby simplifying the testing procedure; and simultaneously, as the time of aloft work is reduced, the operation risks are greatly lowered.
Description
Technical field
The invention belongs to metal zinc oxide lightning arrester method of testing technical field, be specifically related to a kind of uninterrupted power test method of 330KV metal zinc oxide lightning arrester 1mA voltage.
Background technology
Metal zinc oxide lightning arrester (MOA) is the major equipment that electric system prevents thunder and lightning, switching overvoltage, for guaranteeing the safe operation of metal Zinc-Oxide Arrester Zinc-Oxide Arrester, need regularly to carry out charged and have a power failure test to the metal zinc oxide lightning arrester, for example, annual according to electrical test equipment period defining 330KV metal zinc oxide lightning arrester live testing, the test that has a power failure is every two years carried out once.
When the work on the spot of 330KV metal zinc oxide lightning arrester, every is to be composed in series by single metal zinc oxide lightning arrester of upper and lower two joints mutually, last joint metal zinc oxide lightning arrester directly is connected with bus YH or directly is connected with circuit, and circuit or the direct ground connection of bus YH, the lower end of saving the metal zinc oxide lightning arrester down is connected with counter, counter ground connection.
Existing power failure testing requirements metal zinc oxide lightning arrester and miscellaneous equipment break away from, this has come many inconvenience just for regular test tape, during as joint test on carrying out 330KV metal zinc oxide lightning arrester, it to be removed with the lead-in wire that is connected of equipment, because the metal zinc oxide lightning arrester is higher apart from ground, and connected lead-in wire cross section is thicker, it is big to cause removing the lead-in wire working strength, waste time and energy, job schedule is slow, and the required working time is long, and the induced voltage of 330KV metal zinc oxide lightning arrester system is stronger simultaneously, induced electricity fiber crops electrical phenomena takes place in staff easily when work, and the staff is had certain danger.
Summary of the invention
The technical problem to be solved in the present invention is: the shortcoming that exists at prior art is with not enough, the invention discloses a kind of easy, save time the uninterrupted power test method of the 330KV metal zinc oxide lightning arrester 1mA voltage of strong operability and safety.
At above-mentioned technical matters, the present invention proposes following technical scheme.
The uninterrupted power test method of 330KV metal zinc oxide lightning arrester 1mA voltage may further comprise the steps:
(1) will save metal zinc oxide lightning arrester and counter down disconnects, the high-voltage output end of 300KV dc generator is linked to each other with "-" terminals of DC ammeter, "+" terminals of DC ammeter are connected to the junction of upper and lower joint metal zinc oxide lightning arrester, and the voltage tester end of 300KV dc generator links to each other with DC microammeter;
(2) start the 300KV dc generator, when the reading of DC ammeter reached 1mA, the reading of DC microammeter was promptly gone up the 1mA voltage of joint metal zinc oxide lightning arrester;
(3) behind the 1mA voltage determination of last joint metal zinc oxide lightning arrester, "-" terminals of DC ammeter are linked to each other with the lower end of saving the metal zinc oxide lightning arrester down, "+" terminals ground connection of DC ammeter, the high-voltage output end of 300KV dc generator is connected directly to the junction of upper and lower joint metal zinc oxide lightning arrester, start the 300KV dc generator, when the reading of DC ammeter reached 1mA, the reading of DC microammeter promptly saved the 1mA voltage of metal zinc oxide lightning arrester down.
Described DC ammeter is the 1000mA DC ammeter.
Beneficial effect of the present invention is embodied in: the uninterrupted power test method of 330KV metal zinc oxide lightning arrester 1mA voltage of the present invention only needs the ground connection of the counter of metal zinc oxide lightning arrester is opened, just can carry out the test of 1mA voltage, because busbar grounding point is motionless, test process need not upward joint lead-in wire is opened or removed to circuit or busbar grounding point, simplified test procedure, the time and labour saving owing to reduced the time of work high above the ground, greatly reduces operation danger simultaneously.
Description of drawings
Fig. 1 is for measuring the synoptic diagram of going up joint metal zinc oxide lightning arrester 1mA voltage;
Fig. 2 is for measuring the synoptic diagram of joint metal zinc oxide lightning arrester 1mA voltage down.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Referring to Fig. 1, Fig. 2, the uninterrupted power test method of 330KV metal zinc oxide lightning arrester 1mA voltage may further comprise the steps:
(1) will save metal zinc oxide lightning arrester and counter down disconnects, the wiring of 300KV dc generator is connected, the high-voltage output end of 300KV dc generator is directly linked to each other with "-" terminals of 1000mA DC ammeter, "+" terminals of 1000mA DC ammeter are connected to the junction of upper and lower joint metal zinc oxide lightning arrester by lead-in wire, and the voltage tester end of 300KV dc generator links to each other with DC microammeter;
(2) select the suitable gear of DC microammeter as required, begin test after inspection apparatus, table meter, test connection are all correct, start the 300KV dc generator, DC current flows into the earth and ground connection formation loop by the valve block of last joint metal zinc oxide lightning arrester, when the reading of 1000mA DC ammeter reached 1mA, the reading of DC microammeter was promptly gone up the 1mA voltage of joint metal zinc oxide lightning arrester;
(3) behind the 1mA voltage determination of last joint metal zinc oxide lightning arrester, "-" terminals of 1000mA DC ammeter are linked to each other with the lower end of saving the metal zinc oxide lightning arrester down, "+" terminals ground connection of 1000mA DC ammeter, the high-voltage output end of 300KV dc generator is connected directly to, save the junction of metal zinc oxide lightning arrester down, inspection apparatus, the table meter, begin test after test connection is all correct, start the 300KV dc generator, DC current is by saving the valve block of metal zinc oxide lightning arrester down, DC microammeter flows into the earth and constitutes the loop, when the reading of 1000mA DC ammeter reached 1mA, the reading of DC microammeter promptly saved the 1mA voltage of metal zinc oxide lightning arrester down.
Stipulate according to " state's net power transmission and transformation equipment state overhauling rules ", 330KV metal zinc oxide lightning arrester routine has a power failure should carry out the test of every joint metal zinc oxide lightning arrester 1mA voltage, with Ma Ying change 330KVII mother and the new II line of horse lightning arrester is that example is carried out data relatively, referring to table 1 and table 2, the 1mA magnitude of voltage of taking out stitches as can be seen and not taking out stitches is basic identical, leakage current values is equal substantially with the relative error between the identical joint, promptly do not surpass regulation requirement in " state net company power transmission and transformation equipment state overhauling rules ", relatively do not have obvious variation with last secondary data again.
Table 1 Ma Ying becomes the female BL pattern of 330KVII
Table 2 Ma Ying becomes the new II line of 330KV horse BL pattern
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the 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 the present invention and determine scope of patent protection by claims of being submitted to.
Claims (2)
1.330KV the uninterrupted power test method of metal zinc oxide lightning arrester 1mA voltage is characterized in that may further comprise the steps:
(1) will save metal zinc oxide lightning arrester and counter down disconnects, the high-voltage output end of 300KV dc generator is linked to each other with "-" terminals of DC ammeter, "+" terminals of DC ammeter are connected to the junction of upper and lower joint metal zinc oxide lightning arrester, and the voltage tester end of 300KV dc generator links to each other with DC microammeter;
(2) start the 300KV dc generator, when the reading of DC ammeter reached 1mA, the reading of DC microammeter was promptly gone up the 1mA voltage of joint metal zinc oxide lightning arrester;
(3) behind the 1mA voltage determination of last joint metal zinc oxide lightning arrester, "-" terminals of DC ammeter are linked to each other with the lower end of saving the metal zinc oxide lightning arrester down, "+" terminals ground connection of DC ammeter, the high-voltage output end of 300KV dc generator is connected to the junction of upper and lower joint metal zinc oxide lightning arrester, start the 300KV dc generator, when the reading of DC ammeter reached 1mA, the reading of DC microammeter promptly saved the 1mA voltage of metal zinc oxide lightning arrester down.
2. according to the uninterrupted power test method of the described 330KV metal zinc oxide of claim 1 lightning arrester 1mA voltage, it is characterized in that: described DC ammeter is the 1000mA DC ammeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110009235 CN102053204A (en) | 2011-01-18 | 2011-01-18 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110009235 CN102053204A (en) | 2011-01-18 | 2011-01-18 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
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| CN 201110009235 Pending CN102053204A (en) | 2011-01-18 | 2011-01-18 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662116A (en) * | 2012-05-09 | 2012-09-12 | 天津市电力公司 | Portable type passive direct-current testing device for power cables |
| CN104167723A (en) * | 2014-08-06 | 2014-11-26 | 齐进 | Main transformer neutral point overvoltage protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091835A (en) * | 1993-11-10 | 1994-09-07 | 江苏省电力试验研究所 | Lightning arrester leakance detects and discharge counter |
| CN2190339Y (en) * | 1994-03-24 | 1995-02-22 | 付中庆 | ZnO high voltage conductor |
| CN101246196A (en) * | 2008-03-24 | 2008-08-20 | 江苏省电力公司南京供电公司 | Double-segment zinc oxide lightning arrester insulation status testing method |
| CN101592701A (en) * | 2009-07-03 | 2009-12-02 | 江苏省电力公司常州供电公司 | Direct-current voltage withstanding test method for multilevel zinc oxide lightning arresters |
| CN201449423U (en) * | 2009-07-03 | 2010-05-05 | 江苏省电力公司常州供电公司 | Test device for DC withstand voltage test of multi-stage zinc oxide arresters |
-
2011
- 2011-01-18 CN CN 201110009235 patent/CN102053204A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091835A (en) * | 1993-11-10 | 1994-09-07 | 江苏省电力试验研究所 | Lightning arrester leakance detects and discharge counter |
| CN2190339Y (en) * | 1994-03-24 | 1995-02-22 | 付中庆 | ZnO high voltage conductor |
| CN101246196A (en) * | 2008-03-24 | 2008-08-20 | 江苏省电力公司南京供电公司 | Double-segment zinc oxide lightning arrester insulation status testing method |
| CN101592701A (en) * | 2009-07-03 | 2009-12-02 | 江苏省电力公司常州供电公司 | Direct-current voltage withstanding test method for multilevel zinc oxide lightning arresters |
| CN201449423U (en) * | 2009-07-03 | 2010-05-05 | 江苏省电力公司常州供电公司 | Test device for DC withstand voltage test of multi-stage zinc oxide arresters |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662116A (en) * | 2012-05-09 | 2012-09-12 | 天津市电力公司 | Portable type passive direct-current testing device for power cables |
| CN102662116B (en) * | 2012-05-09 | 2014-11-05 | 天津市电力公司 | Portable type passive direct-current testing device for power cables |
| CN104167723A (en) * | 2014-08-06 | 2014-11-26 | 齐进 | Main transformer neutral point overvoltage protection device |
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Application publication date: 20110511 |