CN108037385A - A kind of substep test method for self healing capacitor self-healing failure protective value test - Google Patents
A kind of substep test method for self healing capacitor self-healing failure protective value test Download PDFInfo
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- CN108037385A CN108037385A CN201711244540.4A CN201711244540A CN108037385A CN 108037385 A CN108037385 A CN 108037385A CN 201711244540 A CN201711244540 A CN 201711244540A CN 108037385 A CN108037385 A CN 108037385A
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- self
- healing
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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
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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
- G01R31/003—Environmental or reliability tests
Abstract
The present invention relates to a kind of substep test method for self healing capacitor self-healing failure protective value test, specific method includes three aspects：First capacitor element is depressed in high voltage direct current and is punctured, its self-healing is failed, and is cut off the power rapidly by protective device, then the substep test method by the AC power supply system of self-healing failure capacitor element access simulation true capacitor connection in series-parallel operating mode.This test method divide into two independent stages equivalent to by actual self-healing failure procedure, and the effect reached is：It ensure that the generation of self-healing failure, with respect to other methods, improve test efficiency；Realize and self-healing passage, rather than made electric weakness are produced by electrical breakdown；Self-healing failure is realized under actual motion voltage and capacitor series parallel structure to develop.
Description
Technical field
The invention belongs to power equipment test method field, and in particular to one kind is used for self-healing capacitor component self-healing and loses
Lose the substep test method of protective value test or evaluation.
Background technology
The oil immersed type capacitor generally used compared to more current high pressure field, self healing capacitor have the following advantages：
(1) non-oil ultra high vacuum system, more environmentally-friendly, material saves, and cost is low；
(2) technique is relatively easy, and quality is easier to control；
(3) it is light-weight, small；
(4) product has self-healing property, and operation is relatively reliable；
(5) it is good without oil product fire protecting performance, gases at high pressure are not likely to produce, the possibility for producing explosive harm drops significantly
It is low.
For high pressure self healing capacitor, when capacitor voltage at both ends is excessive or during film-insulated performance degradation, metallization
Hole will be formed by higher voltage breakdown at the electric weakness of film, the size of hole depends on the self-healing energy at electric weakness
Amount.For running capacitor, when self-healing energy is smaller, the rise of the temperature of breakdown point surrounding films is not sufficient to exceed Jie
The fusing point of matter, metalized film can succeed self-healing.And when self-healing energy is larger or during insulation degradation, can be formed and continued at breakdown point
Path, cause self-healing to fail, and produce substantial amounts of heat, this can cause the temperature of electric weakness surrounding films to raise rapidly, add
The speed cracking of film, gasification, so that film-insulated rapid aging.When temperature exceedes the fusing point of medium, it also occur that
The phenomenon of agent burns, for polypropylene film capacitor, when general temperature is more than 120 DEG C, polypropylene film begins to melt,
A large amount of gases are produced, when tolerance blasting energy of the self-healing energy considerably beyond capacitor unit, capacitor explosion will occur
Serious conditions.
Therefore, the protective device for self healing capacitor self-healing failure is the weight of self healing capacitor safe and stable operation
Auxiliary element is wanted, in order to examine or evaluate the performance of various self-healing failure protective devices, it is necessary to which a kind of can accurate simulation self-healing
The test method of capacitor accidental conditions and self-healing failure malfunction.
How analog capacitor device actual motion condition in systems, the occurrence and development process of equivalent self-healing failure
It is the difficult point of experiment.In order to improve the probability that self-healing unsuccessfully occurs, can be realized by varying the service condition of capacitor, such as
Improve experimental voltage or improve environment temperature etc., the design parameter of capacitor can also be changed, such as reduce sheet resistance or improve design
Field strength.But will all cause cannot there are bigger difference, result of the test between experimental condition and actual motion condition for these changes
True reflection moving law.
Domestic and international related researcher has attempted some special test methods to study self-healing performance, these test methods
It can reflect self-healing feature to a certain degree, but it is all not exactly the same with actual operating mode, and self-healing failure cannot be simulated
Process.
The content of the invention
For background technology there are the problem of, it is an object of the invention to provide one kind be used for self healing capacitor self-healing lose
Lose the substep test method of protective value test.
In order to achieve the above object, the technical solution adopted in the present invention is：One kind is used for self healing capacitor self-healing and loses
Lose the substep test method of protective value test, it is characterised in that the described method comprises the following steps：
The first step, capacitor element is first depressed and punctured, its self-healing is failed in high voltage direct current；
Second step, inside the self-healing failure capacitor element implantation capacitor unit in the first step, and from capacitor list
First internal vacuum contactor drawn both threads and connect outside, then accesses master trip by the capacitor unit under non-charged state
Circuit；
3rd step, master trip ring current pressure regulator is gradually boosted, and after being increased to predetermined voltage, controls vacuum contact
Device closes, by the AC power supply system of self-healing failure capacitor element access simulation true capacitor connection in series-parallel operating mode, herein the
Self-healing failure capacitor element both end voltage, capacitor branches total voltage and total are gathered in whole process during three steps at the same time
Electric current, and the physical phenomenon that experiment process occurs, examine reliability and the sensitivity of self-healing failure protective device.
Further, in order to simulate actual motion state, the series voltage stabilizing capacitor C in test loop1, when self-healing fails
Capacitor element C4When generation self-healing fails, big change will not occur for the capacitance of whole test loop, flow through the total of circuit
Electric current is also substantially unaffected.
Further, it is desirable to which capacitors self-healing failure safeguard measure obvious on fire, drum can occur in capacitor unit
Self-healing failure action signal is sent before tripe, explosion phenomenon, if 10s inner capacitor units do not have obvious phenomenon, self-healing failure
Protection does not also act, then repeats above-mentioned experiment；In order to verify reliability that self-healing is unsuccessfully protected, it is desirable to which the experiment repeats three
Secondary, the reliability of self-healing failure safeguard measure reaches 100%.
Further, during experiment, the preventing fires of capacitor unit, explosion-proof precautionary measures should be carried out, and connect in vacuum
After tentaculum K closures, delay 10s startup power supply protections, electric power loop is disconnected, is prevented due to being tested self healing capacitor self-healing
Failure safeguard measure fails and causes power supply to damage, once there is interpolar or extremely short to shell in capacitor unit during in addition testing
Road failure, overcurrent protection rapidly should disconnect power supply.
Further, after the test, test product numbering, environment temperature and relative humidity are recorded, is recorded using camera whole
The state of a process capacitor unit.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention's unsuccessfully protects for self healing capacitor self-healing
Protect the substep test method of performance test, it is therefore an objective to which establishing one can be compared with accurate simulation self healing capacitor operating condition and self-healing
A kind of experimental enviroment of failure malfunction, there is provided test method of all kinds of protection scheme performances of objective evaluation.This method has
Following advantage：
(1) capacitor element is depressed in high voltage direct current in advance and punctured, its self-healing is failed, then accessed master trip and return
Road, it is ensured that the validity of subjects；
(2) in master trip circuit be provided with to simulate in true capacitor group with the series-parallel electricity of faulty capacitor unit
Container, realizes self-healing failure and develops under actual motion voltage and capacitor series parallel structure.
Brief description of the drawings
Fig. 1 is the analog capacitor element self-healing failure substep test method(s) circuit diagram of the present invention.
Embodiment
For the ease of those of ordinary skill in the art understand and implement the present invention, the present invention is made with reference to embodiment into
The detailed description of one step, it will be appreciated that implementation example described herein is merely to illustrate and explain the present invention, and is not used to limit
The fixed present invention.
Provided by the present invention for the substep test method of self healing capacitor self-healing failure protective value test, the side
Method includes the following steps：
The first step, capacitor element is first depressed and punctured, its self-healing is failed in high voltage direct current；
Second step, inside this self-healing failure capacitor element implantation capacitor unit, and draws inside capacitor unit
Go out the vacuum contactor that both threads connect outside, the capacitor unit is then accessed into master trip circuit (non-charged state)；
3rd step, master trip ring current pressure regulator is gradually boosted, and after being increased to predetermined voltage, controls vacuum contact
Device closes, by the AC power supply system of self-healing failure capacitor element access simulation true capacitor connection in series-parallel operating mode, herein the
Self-healing failure capacitor element both end voltage, capacitor branches total voltage and total are gathered in whole process during three steps at the same time
Electric current, and the physical phenomenon that experiment process occurs, examine reliability and the sensitivity of self-healing failure protective device.
This test method divide into two independent stages equivalent to by actual self-healing failure procedure, reach following several
Point effect：First, ensure that the generation of self-healing failure, with respect to other methods, test efficiency is improved；Second, realize by shocking by electricity
Wear and produce self-healing passage, rather than made electric weakness；Third, self-healing failure is realized in actual motion voltage and capacitor
Develop under series parallel structure.Substep test method(s) realizes the purpose that self-healing failure develops under actual operating mode substantially, specifically
Test loop is as shown in Figure 1.
In Fig. 1, T1For pressure regulator, T2For step-up transformer, L is compensation reactor, C1It is actual for voltage regulation capacitor, simulation
The capacitor total capacitance connected in capacitor group with faulty capacitor unit, C2To be lost in simulation true capacitor unit with self-healing
Lose the total capacitance of the capacitor element of capacitor element series connection, C3For the capacitor that fails in simulation true capacitor unit with self-healing
The total capacitance of the capacitor element of element in parallel, C4For self-healing failure capacitor element, DC break down voltage is first used before the test
Mode is punctured, and K is vacuum contactor, for by self-healing failure capacitor element C4Access system.
In practical application, capacitor group is usually combined the voltage and appearance for reaching requirement by capacitor unit by connection in series-parallel
Amount, this mode of connection, determines when self-healing failure occurs for some element in a certain capacitor unit, total capacitance
Device loop current does not have significant change.In order to simulate actual motion state, the series voltage stabilizing capacitor C in test loop1, when
Capacitor element C4When generation self-healing fails, big change will not occur for the capacitance of whole test loop, flow through the total of circuit
Electric current is also substantially unaffected.
It is required that capacitors self-healing failure safeguard measure obvious on fire, bulge, explosion etc. can occur in capacitor unit
Self-healing failure action signal is sent before phenomenon.If 10s inner capacitor units do not have obvious phenomenon, self-healing, which is unsuccessfully protected, not to be had yet
There is action, then repeat above-mentioned experiment.In order to verify reliability that self-healing is unsuccessfully protected, it is desirable to which in triplicate, self-healing is lost for the experiment
The reliability for losing safeguard measure reaches 100%.
In addition during experiment, the preventing fires of capacitor unit, explosion-proof precautionary measures should be carried out, and in vacuum contactor K
After closure, delay 10s startup power supply protections, electric power loop is disconnected, and is prevented due to subject self healing capacitor self-healing failure
Safeguard measure fails and causes power supply to damage, once there is interpolar or extremely to shell short circuit event in capacitor unit during in addition testing
Barrier, overcurrent protection rapidly should disconnect power supply.After the test, test product numbering, environment temperature and relative humidity are recorded.Utilize
Camera records the state of whole process capacitor unit.
It should be appreciated that the part that this specification does not elaborate belongs to the prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection scope, those of ordinary skill in the art are not departing from power of the present invention under the enlightenment of the present invention
Profit is required under protected ambit, can also be made replacement or deformation, be each fallen within protection scope of the present invention, this hair
It is bright scope is claimed to be determined by the appended claims.
Claims (5)
1. a kind of substep test method for self healing capacitor self-healing failure protective value test, it is characterised in that described
Method comprises the following steps：
The first step, capacitor element is first depressed and punctured, its self-healing is failed in high voltage direct current；
Second step, inside the self-healing failure capacitor element implantation capacitor unit in the first step, and out of capacitor unit
The vacuum contactor that both threads connect outside is drawn in portion, and then which is accessed to master trip under non-charged state returned
Road；
3rd step, master trip ring current pressure regulator is gradually boosted, and after being increased to predetermined voltage, control vacuum contactor closes
Close, self-healing failure capacitor element is accessed to the AC power supply system of the actual connection in series-parallel operating mode of analog capacitor, herein the 3rd step
During gather in whole process self-healing failure capacitor element both end voltage, capacitor branches total voltage and total electricity at the same time
Stream, and the physical phenomenon that experiment process occurs, examine reliability and the sensitivity of self-healing failure protective device.
2. the substep test method for self healing capacitor self-healing failure protective value test as claimed in claim 1, its
It is characterized in that, in order to simulate actual motion state, the series voltage stabilizing capacitor C in test loop1, when self-healing failure capacitor member
Part C4When generation self-healing fails, big change will not occur for the capacitance of whole test loop, flow through the total current in circuit also base
This is unaffected.
3. the substep test method for self healing capacitor self-healing failure protective value test as claimed in claim 1, its
It is characterized in that, it is desirable to which capacitors self-healing failure safeguard measure obvious on fire, bulge, explosion can occur now in capacitor unit
As sending self-healing failure action signal before, if 10s inner capacitor units do not have obvious phenomenon, self-healing, which is unsuccessfully protected, not to be had yet
Action, then repeat above-mentioned experiment；In order to verify reliability that self-healing is unsuccessfully protected, it is desirable to the experiment in triplicate, self-healing failure
The reliability of safeguard measure reaches 100%.
4. the substep test method for self healing capacitor self-healing failure protective value test as claimed in claim 1, its
It is characterized in that, during experiment, the preventing fires of capacitor unit, explosion-proof precautionary measures should be carried out, and close in vacuum contactor K
Afterwards, the 10s startup power supplies that are delayed protection, electric power loop is disconnected, and is prevented since subject self healing capacitor self-healing is unsuccessfully protected
Measure fails and causes power supply to damage, once there is interpolar or extremely to shell short trouble in capacitor unit during in addition testing,
Overcurrent protection rapidly should disconnect power supply.
5. the substep test method for self healing capacitor self-healing failure protective value test as claimed in claim 1, its
It is characterized in that, after the test, record test product numbering, environment temperature and relative humidity, utilize camera record whole process electricity
The state of container unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244540.4A CN108037385A (en) | 2017-11-30 | 2017-11-30 | A kind of substep test method for self healing capacitor self-healing failure protective value test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244540.4A CN108037385A (en) | 2017-11-30 | 2017-11-30 | A kind of substep test method for self healing capacitor self-healing failure protective value test |
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| Publication Number | Publication Date |
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| CN108037385A true CN108037385A (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711244540.4A Pending CN108037385A (en) | 2017-11-30 | 2017-11-30 | A kind of substep test method for self healing capacitor self-healing failure protective value test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031079A (en) * | 2018-06-28 | 2018-12-18 | 安徽开博电容科技有限公司 | A kind of high-voltage metallized membrane capacitance simulation self-healing test method |
| CN112865023A (en) * | 2020-12-31 | 2021-05-28 | 中国电力科学研究院有限公司 | Effective power protection method and system for high-voltage self-healing capacitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6212055B1 (en) * | 1996-10-02 | 2001-04-03 | Asea Brown Boveri Jumet S.A. (Abb) | Self-healing capacitor |
| CN102394170A (en) * | 2011-06-29 | 2012-03-28 | 中国西电电气股份有限公司 | Protection device of cylindrical self-healing capacitor with overpressure isolator |
| CN103176105A (en) * | 2013-03-13 | 2013-06-26 | 绍兴电力局 | Test circuit and method for capacitor internal fuses based on alternating current phase selection |
| CN205004736U (en) * | 2015-10-12 | 2016-01-27 | 青岛鲁能恒源高新电气有限公司 | Self -healing low pressure power capacitor circuit that connects in parallel |
-
2017
- 2017-11-30 CN CN201711244540.4A patent/CN108037385A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6212055B1 (en) * | 1996-10-02 | 2001-04-03 | Asea Brown Boveri Jumet S.A. (Abb) | Self-healing capacitor |
| CN102394170A (en) * | 2011-06-29 | 2012-03-28 | 中国西电电气股份有限公司 | Protection device of cylindrical self-healing capacitor with overpressure isolator |
| CN103176105A (en) * | 2013-03-13 | 2013-06-26 | 绍兴电力局 | Test circuit and method for capacitor internal fuses based on alternating current phase selection |
| CN205004736U (en) * | 2015-10-12 | 2016-01-27 | 青岛鲁能恒源高新电气有限公司 | Self -healing low pressure power capacitor circuit that connects in parallel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031079A (en) * | 2018-06-28 | 2018-12-18 | 安徽开博电容科技有限公司 | A kind of high-voltage metallized membrane capacitance simulation self-healing test method |
| CN112865023A (en) * | 2020-12-31 | 2021-05-28 | 中国电力科学研究院有限公司 | Effective power protection method and system for high-voltage self-healing capacitor |
| CN112865023B (en) * | 2020-12-31 | 2023-08-18 | 中国电力科学研究院有限公司 | Effective power protection method and system for high-voltage self-healing capacitor |
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Application publication date: 20180515 |
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