CN102455386A - Method for testing conducting loop resistance of generator circuit breaker - Google Patents
Method for testing conducting loop resistance of generator circuit breaker Download PDFInfo
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- CN102455386A CN102455386A CN2010105214776A CN201010521477A CN102455386A CN 102455386 A CN102455386 A CN 102455386A CN 2010105214776 A CN2010105214776 A CN 2010105214776A CN 201010521477 A CN201010521477 A CN 201010521477A CN 102455386 A CN102455386 A CN 102455386A
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- galvanic circle
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Abstract
The invention discloses a method for testing conducting loop resistance of a generator circuit breaker. The method comprises the following steps of: (1) testing the conducting loop resistance by using a direct-current voltage drop method; and (2) improving the test current to test the conducting loop resistance. By increasing the step of improving the test current to test the conducting loop resistance after the conventional step of testing the conducting loop resistance by using the direct-current voltage drop method, the real contact state of a contact of the generator circuit breaker can be judged more accurately.
Description
Technical field
The present invention relates to the test field of electrical equipment, be specifically related to the method for testing of a kind of generator breaker galvanic circle resistance.
Background technology
Generator breaker galvanic circle resistance test is a kind of effective means that detects contact state between the generator breaker contact.The test method conventional at present like Fig. 1 is to use the direct current pressure decline method to test; May further comprise the steps: in the galvanic circle, pass to DC current; On the resistance of galvanic circle, produce voltage drop; Measure through the current value of galvanic circle and the voltage drop on the tested loop, calculate galvanic circle resistance according to Ohm law.Clearly regulation according to standards such as GB763-90, DL405-91: the dc voltage drop method is adopted in test, and the electric current of feeding must not be less than 100A, and on-the-spot employed DC experiment electric current is between 100～600A at present.But for the frequent generator breaker of operation; After its contact is contaminated; The real contact condition of contact is compared under conventional galvanic circle method for testing resistance gained test result and the generator breaker operation conditions, and is often bigger than normal, can not obtain correct result.
Summary of the invention
Technical matters to be solved by this invention provides the method for testing of a kind of generator breaker galvanic circle resistance, and it can improve the accuracy of test generator breaker contact.
In order to solve above technical matters, the invention provides the method for testing of a kind of generator breaker galvanic circle resistance, comprising:
(1) with the step of direct current pressure decline method testing conductive loop resistance;
(2) improve the step that measuring current is carried out the galvanic circle resistance test.
The present invention has increased after the step of routine with direct current pressure decline method testing conductive loop resistance and has improved the step that measuring current is carried out the galvanic circle resistance test, can judge the true contact condition of generator breaker contact more accurately.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is existing process flow diagram with direct current pressure decline method testing conductive loop resistance;
Fig. 2 is an embodiment of the method for testing of generator breaker of the present invention galvanic circle resistance.
Embodiment
Conventional at present galvanic circle resistance test adopts the direct current pressure decline method more, and as shown in Figure 1, its process comprises: in the galvanic circle, pass to DC current; On the resistance of galvanic circle, produce voltage drop; Calculate galvanic circle resistance.But when conventional resistance test gained generator breaker galvanic circle, galvanic circle resistance is bigger than normal (when the testing conductive loop resistance is defective); Should not judge in view of the above directly that generator breaker contact contact condition is bad; Because this method of testing can not reflect under the running status sometimes, the true contact condition of generator breaker contact.
The method of testing of generator breaker of the present invention galvanic circle resistance has increased after the step of routine with direct current pressure decline method testing conductive loop resistance and has improved the step that measuring current is carried out the galvanic circle resistance test.
Be illustrated in figure 2 as a specific embodiment of the present invention; At first adopt conventional method that galvanic circle resistance is tested; Judge that if the result is qualified generator breaker contact contact condition is good; Defective if (for example resistance is bigger than normal), it is stable until test result then to improve measuring current, according to galvanic circle resistance qualified further judgement generator breaker contact contact condition whether; Think that if galvanic circle resistance is qualified generator breaker contact contact condition is good, otherwise judge that generator breaker contact contact condition descends.
Wherein, improve measuring current and can take two kinds of methods, a kind of is the DC current that directly improves test usefulness; Another kind is earlier generator breaker to be passed to bigger alternating current, tests with the direct current pressure decline method again.Improve measuring current,, judge according to galvanic circle resistance again until the galvanic circle resistance stabilization of test.
The method of testing that the present invention is directed to existing generator breaker galvanic circle resistance is improved; Increased the step of step increase testing current galvanic circle resistance; And, can finally make the test result truer contact condition of reaction machine contact of breaker to the two kinds of methods that increased the concrete employing of electric current.
Claims (4)
1. the method for testing of a generator breaker galvanic circle resistance is characterized in that, comprising:
(1) with the step of direct current pressure decline method testing conductive loop resistance;
(2) improve the step that measuring current is carried out the galvanic circle resistance test.
2. the method for testing of generator breaker as claimed in claim 1 galvanic circle resistance is characterized in that, step (1) is said to be comprised with direct current pressure decline method testing conductive loop resistance: in the galvanic circle, pass to DC current; On the resistance of galvanic circle, produce voltage drop; Calculate galvanic circle resistance.
3. the method for testing of generator breaker as claimed in claim 1 galvanic circle resistance is characterized in that, the said raising measuring current of step (2) is meant: improve test and test with DC current, and stable until experimental result.
4. the method for testing of generator breaker as claimed in claim 1 galvanic circle resistance; It is characterized in that; The said raising measuring current of step (2) is meant: before the test, generator breaker is passed to alternating current, carry out the galvanic circle resistance test with the direct current pressure decline method then; Improve constantly alternating current size and through-flow time, stable until test result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105214776A CN102455386A (en) | 2010-10-27 | 2010-10-27 | Method for testing conducting loop resistance of generator circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105214776A CN102455386A (en) | 2010-10-27 | 2010-10-27 | Method for testing conducting loop resistance of generator circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102455386A true CN102455386A (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105214776A Pending CN102455386A (en) | 2010-10-27 | 2010-10-27 | Method for testing conducting loop resistance of generator circuit breaker |
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| CN (1) | CN102455386A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143784Y (en) * | 1992-10-14 | 1993-10-13 | 海南海天科技开发实业有限公司 | Device for measuring loop resistance by using pulse constant current source |
| CN1773299A (en) * | 2004-11-12 | 2006-05-17 | 发那科株式会社 | Resistivity detector and resistivity detection apparatus |
| WO2009131530A1 (en) * | 2008-04-21 | 2009-10-29 | Megger Sweden Ab | Resistance measurement in high power apparatus environments |
| CN101581763A (en) * | 2008-05-17 | 2009-11-18 | 陈书欣 | Tester for testing operating characteristics of DC circuit breaker |
| CN101587169A (en) * | 2009-07-03 | 2009-11-25 | 东北电网有限公司长春超高压局 | A kind of breaker state test method |
| CN201569703U (en) * | 2009-09-27 | 2010-09-01 | 湖北省电力试验研究院 | Dynamic resistance measuring device of high-voltage circuit breaker |
-
2010
- 2010-10-27 CN CN2010105214776A patent/CN102455386A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143784Y (en) * | 1992-10-14 | 1993-10-13 | 海南海天科技开发实业有限公司 | Device for measuring loop resistance by using pulse constant current source |
| CN1773299A (en) * | 2004-11-12 | 2006-05-17 | 发那科株式会社 | Resistivity detector and resistivity detection apparatus |
| WO2009131530A1 (en) * | 2008-04-21 | 2009-10-29 | Megger Sweden Ab | Resistance measurement in high power apparatus environments |
| CN101581763A (en) * | 2008-05-17 | 2009-11-18 | 陈书欣 | Tester for testing operating characteristics of DC circuit breaker |
| CN101587169A (en) * | 2009-07-03 | 2009-11-25 | 东北电网有限公司长春超高压局 | A kind of breaker state test method |
| CN201569703U (en) * | 2009-09-27 | 2010-09-01 | 湖北省电力试验研究院 | Dynamic resistance measuring device of high-voltage circuit breaker |
Non-Patent Citations (1)
| Title |
|---|
| 高飞等: "断路器导电回路电阻的测量", 《仪器仪表用户》, vol. 9, no. 5, 31 October 2002 (2002-10-31), pages 36 - 38 * |
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Application publication date: 20120516 |