CN106383290A - Test method for on-line test of leakage current of direct-current arrester - Google Patents
Test method for on-line test of leakage current of direct-current arrester Download PDFInfo
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- CN106383290A CN106383290A CN201610850508.XA CN201610850508A CN106383290A CN 106383290 A CN106383290 A CN 106383290A CN 201610850508 A CN201610850508 A CN 201610850508A CN 106383290 A CN106383290 A CN 106383290A
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- Prior art keywords
- leakage current
- arrester
- test
- direct current
- monitor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/15—Indicating the presence of current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a test method for the on-line test of the leakage current of a direct-current arrester. The method includes the following steps that: step 1, one end of a short-circuiting conductor is reliably grounded, and the other end of the short-circuiting conductor is connected with a monitor, so that the monitor can be short-circuited; step 2, the sheath of the direct-current arrester is provided with a leakage current shielding ring, and the leakage current shielding ring is grounded reliably; step 3, the instrument measuring line of the monitor is reliably connected with the lower end flange of the direct-current arrester; step 4, the short-circuiting conductor is disconnected from the monitor, and the short-circuiting conductor is disconnected from a ground line; step 5, the monitor is adopted to measure the magnitude of leakage current, and temperature, humidity, the continuous operating voltage of the direct-current arrester and the model of the monitor are recorded when the leakage current is generated; and step 6, whether the direct-current arrester operates normally is evaluated. With the test method for the on-line test of the leakage current of the direct-current arrester of the invention adopted, the whether the direct-current arrester operates normally can be accurately judged. The method is simple, reliable and easy to implement.
Description
Technical field
The present invention relates to the drain current test method of high voltage electric equipment arrester, more particularly, to a kind of on-line testing direct current
The test method of direct current arrester leakage current in system.
Background technology
In AC system, it is to judge important means and the side whether arrester normally run to the on-line testing of arrester
Method, its pilot project is whether the current in resistance property of test arrester is exceeded, and in AC system, this test method is highly developed
With effective.But accelerate with China's direct current power pace of construction, increasing DC engineering construction finishes, and whether arrester
Reliable normal operation, is that the safe operation to power system plays a very important role.Direct current arrester is main at present
It is the measurement data relying on monitor to provide, affected larger by weather environment it is impossible to objectively judge running of direct current arrester
State.The method of the on-line testing current in resistance property adopting in original AC system, is only applicable to the arrester of AC system, no
Can apply to the on-line testing of the arrester in straight-flow system.There is presently no arrester in generally acknowledged rational straight-flow system online
The method of test leakage current, it is impossible to reliably evaluate the running status of direct current arrester in straight-flow system, affects straight-flow system
Safe and stable operation.
Content of the invention
It is an object of the invention to provide a kind of test method of on-line testing direct current arrester leakage current, can sentence exactly
Direct current arrester whether normal operation in disconnected straight-flow system, the method is simple and reliable, easily executes.
A kind of test method of on-line testing direct current arrester leakage current, comprises the following steps：
After step 1, short circuit wire one end reliable ground, then its other end is connected monitor, by monitor short circuit；
Installation leakage current shading ring is put outside step 2, direct current arrester, and by leakage current shading ring reliable ground；
Step 3, the lower end flanges of the apparatus measures line of monitor and direct current arrester are reliably connected；
Step 4, short circuit wire and monitor are disconnected, then by short-circuit conductors with disconnect；
Step 5, test leakage current with monitor, and record temperature during test leakage current, humidity and direct current and take shelter from the thunder
The continuous running voltage of device, and monitor model；
Step 6, evaluate direct current arrester whether normal operation, the described side evaluating direct current arrester whether normal operation
Method is：
If the test value of leakage current is more than manufacturer's required value, carry out having a power failure test to determine whether；
If the test value of leakage current is not more than manufacturer's required value of direct current arrester, the initial value with direct current arrester enters
Row contrast, when the test value of leakage current is more than 2 times of initial value, according to the temperature of described step 5 record, by the test of leakage current
Value carries out converting the test value drawing the leakage current finally obtaining, and the translation method that the test value of leakage current is converted is：
The temperature of described step 5 record often reduces by 10 DEG C than initial value test temperature, the test value of leakage current is reduced 5%, such as finally
Carry out, when the test value of the leakage current obtaining is still greater than 2 times of initial value, the detection that has a power failure, when the test value of the leakage current finally obtaining
Direct current arrester normal operation is judged during 2 times of initial value being not more than arrester；
If the test value of leakage current is not more than manufacturer's required value of direct current arrester, the initial value with direct current arrester enters
Row contrast, when test value is not more than 2 times of initial value, judges direct current arrester normal operation.In described step 1, described
Short circuit wire is more than 16cm for line footpath2Copper conductor, and first by after the reliable ground of copper conductor one end, then the other end by copper conductor
It is connected with monitor.
In described step 2, the diameter of described leakage current shading ring is identical with direct current arrester external diameter, with straight during installation
Stream arrester overcoat be closely nested, and be arranged on direct current arrester bottom inverse 2-3 to umbrella between.
In described step 3, described apparatus measures line adopts double shield line.
In described step 6, when the test value of the leakage current finally obtaining is still greater than 2 times of initial value. capable of circulation described
Step 1 to 6, retested.
Compared with prior art, the beneficial effects of the present invention is：A kind of on-line testing direct current arrester leakage current is provided
Test method, can exclude the external disturbance of test by leakage current shading ring, the leakage current of real-time testing arrester, and
And provide the criterion judging whether arrester normally runs.Direct current arrester whether normal operation can be judged exactly；The party
Method is simple and reliable, easily executes.
Brief description
Fig. 1 is a kind of implementing procedure figure of the test method of present invention on-line testing direct current arrester leakage current；
Specific embodiment
With reference to the accompanying drawings and detailed description present disclosure is described in further details.
Embodiment
The test method of on-line testing direct current arrester leakage current proposed by the present invention, its implementing procedure refers to Fig. 1 institute
Show, including step：
S1, short circuit monitor；
Wherein, short circuit wire adopts line footpath to be more than 16cm2Copper conductor, and first by after one end reliable ground of copper conductor,
Again the other end of copper conductor is connected with monitor.
S2, installation leakage current shading ring；
Wherein, leakage current shading ring is arranged on and puts outside direct current arrester, and by leakage current shading ring reliable ground, and leak
The diameter of current shielding ring is identical with direct current arrester external diameter, during installation with direct current arrester overcoat being nested together tightly, and
And be arranged on direct current arrester bottom inverse 2-3 to umbrella between, simultaneously note can not connect with arrester lower flange.
After S3, the instrument connecting line of connection monitor, remove the short circuit wire of monitor bypass, and it is big to measure leakage current
Little, the continuous running voltage of the temperature, humidity and direct current arrester during record test leakage current, and monitor model simultaneously；；
The lower end flanges of the apparatus measures line of monitor and direct current arrester are reliably connected, described apparatus measures line adopts
Double shield line, to exclude external disturbance；The short circuit wire removing monitor bypass will short circuit wire be disconnected with monitor
Afterwards, then by short-circuit conductors with disconnect；Test leakage current with monitor, and record temperature during test leakage current,
Humidity and the continuous running voltage of direct current arrester, and monitor model；
S4, evaluate direct current arrester whether normal operation；
If the test value of leakage current is more than manufacturer's required value, carry out having a power failure test to determine whether；
If the test value of leakage current is not more than manufacturer's required value of direct current arrester, the initial value with direct current arrester enters
Row contrast, when the test value of leakage current is more than 2 times of initial value, according to the temperature of described step 5 record, by the test of leakage current
Value carries out converting the test value drawing the leakage current finally obtaining, and the translation method that the test value of leakage current is converted is：
The temperature of described step 5 record often reduces by 10 DEG C than initial value test temperature, the test value of leakage current is reduced 5%, such as finally
Carry out the detection that has a power failure, above-mentioned steps capable of circulation when the test value of the leakage current obtaining is still greater than 2 times of initial value, again surveyed
Examination.Judge direct current arrester normal operation when the test value of the leakage current finally obtaining is not more than 2 times of the initial value of arrester；
Embodiment described above only have expressed embodiments of the present invention, and its description is more concrete and detailed, but can not
Therefore it is interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (5)
1. a kind of test method of on-line testing direct current arrester leakage current is it is characterised in that comprise the following steps：
After step 1, short circuit wire one end reliable ground, then its other end is connected monitor, by monitor short circuit；
Installation leakage current shading ring is put outside step 2, direct current arrester, and by leakage current shading ring reliable ground；
Step 3, the lower end flanges of the apparatus measures line of monitor and direct current arrester are reliably connected；
Step 4, short circuit wire and monitor are disconnected after, then by short-circuit conductors with disconnect；
Step 5, test leakage current with monitor, and record temperature during test leakage current, humidity and direct current arrester
Continuous running voltage, and monitor model；
Step 6, evaluate direct current arrester whether normal operation, the described method evaluating direct current arrester whether normal operation
It is：
If the test value of leakage current is more than manufacturer's required value, carry out having a power failure test to determine whether；
If the test value of leakage current is not more than manufacturer's required value of direct current arrester, it is right to carry out with the initial value of direct current arrester
Ratio, when test value is not more than 2 times of initial value, judges direct current arrester normal operation.
If the test value of leakage current is not more than manufacturer's required value of direct current arrester, it is right to carry out with the initial value of direct current arrester
Ratio, when the test value of leakage current is more than 2 times of initial value, according to the temperature of described step 5 record, the test value of leakage current is entered
Row conversion draws the test value of the leakage current finally obtaining, and the translation method that the test value of leakage current is converted is：Described
The temperature of step 5 record often reduces by 10 DEG C than initial value test temperature, the test value of leakage current is reduced 5%, such as finally obtains
Leakage current test value still greater than 2 times of initial value when carry out the detection that has a power failure, when the test value of the leakage current finally obtaining is little
Judge direct current arrester normal operation when 2 times of the initial value of arrester.
2. the test method of on-line testing direct current arrester leakage current according to claim 1 is it is characterised in that described
In step 1, described short circuit wire is more than 16cm for line footpath2Copper conductor, and first by after the reliable ground of copper conductor one end, then will
The other end of copper conductor is connected with monitor.
3. the test method of on-line testing direct current arrester leakage current according to claim 1 is it is characterised in that described
In step 2, the diameter of described leakage current shading ring is identical with direct current arrester external diameter, is locked with outside direct current arrester during installation
Close be nested, and be arranged on direct current arrester bottom inverse 2-3 to umbrella between.
4. the test method of on-line testing direct current arrester leakage current according to claim 1 is it is characterised in that described
In step 6, described apparatus measures line adopts double shield line.
5. the test method of on-line testing direct current arrester leakage current according to claim 1 is it is characterised in that described
In step 6, when the test value of the leakage current finally obtaining is still greater than 2 times of initial value. described step 1 capable of circulation to 6, carry out
Retest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850508.XA CN106383290A (en) | 2016-09-26 | 2016-09-26 | Test method for on-line test of leakage current of direct-current arrester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850508.XA CN106383290A (en) | 2016-09-26 | 2016-09-26 | Test method for on-line test of leakage current of direct-current arrester |
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| CN106383290A true CN106383290A (en) | 2017-02-08 |
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| CN201610850508.XA Pending CN106383290A (en) | 2016-09-26 | 2016-09-26 | Test method for on-line test of leakage current of direct-current arrester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427835A (en) * | 2018-03-01 | 2018-08-21 | 华南理工大学 | A kind of power cable sheath calculation of circulating current method |
| CN109061451A (en) * | 2018-06-25 | 2018-12-21 | 许继集团有限公司 | A kind of monitoring method and system of hybrid dc circuit breaker arrester |
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2016
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| CN201886106U (en) * | 2010-12-03 | 2011-06-29 | 北京人民电器厂有限公司 | Direct current leakage current measuring device |
| CN102087326A (en) * | 2011-01-18 | 2011-06-08 | 宝鸡供电局 | Uninterrupted power test method for 330kv metal zinc oxide arrester leakage current |
| KR101504975B1 (en) * | 2013-10-02 | 2015-03-30 | 주식회사 포스코 | Apparatus for measuring leakage current and method for operating the same |
| KR20150096197A (en) * | 2014-02-14 | 2015-08-24 | 삼성전자주식회사 | Circuit for measuring leakage current in semiconductor integrated circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427835A (en) * | 2018-03-01 | 2018-08-21 | 华南理工大学 | A kind of power cable sheath calculation of circulating current method |
| CN109061451A (en) * | 2018-06-25 | 2018-12-21 | 许继集团有限公司 | A kind of monitoring method and system of hybrid dc circuit breaker arrester |
| CN109061451B (en) * | 2018-06-25 | 2020-10-30 | 许继集团有限公司 | Monitoring method and system for lightning arrester of hybrid direct current circuit breaker |
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Application publication date: 20170208 |