CN105552874B - The method of surge protector trouble situation is judged using the temperature difference - Google Patents
The method of surge protector trouble situation is judged using the temperature difference Download PDFInfo
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- CN105552874B CN105552874B CN201610066859.1A CN201610066859A CN105552874B CN 105552874 B CN105552874 B CN 105552874B CN 201610066859 A CN201610066859 A CN 201610066859A CN 105552874 B CN105552874 B CN 105552874B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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Abstract
The invention provides a kind of method that surge protector trouble situation is judged using the temperature difference, including：S00：A kind of SPD units are provided；S30：One of them or such multiple SPD unit are taken, access power-supply system is used；S40：Monitor the temperature and the temperature of environment where it of SPD units；S50：The temperature for the SPD units that monitoring obtains and the temperature difference of place environment temperature are calculated, by it compared with the threshold difference being previously obtained；If being less than, return to step S40；If being not less than, default action is carried out.
Description
Technical field
The present invention relates to surge protector, more particularly to a kind of side that surge protector trouble situation is judged using the temperature difference
Method.
Background technology
SPD (Surge Protective Device hereinafter referred to as SPD) is to limit transient overvoltage and guiding surge
A kind of equipment of electric current.It not only has lightning protection function, and also has the effect for suppressing switching overvoltage, therefore SPD application
Field is very wide.SPD is indispensable a kind of device in lightning protection, and it is scurrying into power line, signal transmssion line that it, which is acted on,
Instantaneous overvoltage is limited in the voltage range that equipment or system can bear, or powerful lightning current aerial drainage is entered into ground, protection
Protected equipment or system are not hit.
SPD is usually 7*24 hour on-line operations, and under the effect of various line surge voltages, product can gradually degrade, and lose
Effect is deprotected, or even short circuit is led to the accident such as power failure or more serious fire.Therefore when every profession and trade uses SPD, early stage
It can typically be avoided by the way of regular visit even regularly replaces.
The raising of lifting and technology recently as awareness of safety, SPD is more using the passive instruction side such as deterioration indicating window
Formula indicates the product normally departed from from circuit, and the actual product before disengaging can not be pre- in high-risk state
Know；Under some fortuitous events, product is it is also possible to can not normally depart from and cause the catastrophe failure such as on fire.
The content of the invention
The technical problem to be solved in the present invention is how to carry out effective detection to the failure situations of SPD units, so as to prevent
When it loses protecting effect still be put into use and caused by potential safety hazard.
In order to solve this technical problem, surge protector trouble situation is judged using the temperature difference the invention provides a kind of
Method, including：
S00：A kind of SPD units are provided；
S30：One of such SPD unit or multiple is taken, access power-supply system is used；
S40：Monitor the temperature and the temperature of environment where it of SPD units；
S50：Calculation procedure S40 monitors the temperature of obtained SPD units and the temperature difference of place environment temperature, by its with it is pre-
The threshold difference first obtained is compared；
If being less than, return to step S40；
If being not less than, default action is carried out.
Optionally, before the step S30, being previously obtained the process of threshold difference includes：
S10：One of this kind of SPD unit or multiple this kind of SPD units, or its raw material are taken, electric current is applied to it；Inspection
Pressure sensitive voltage data, the temperature data and ambient temperature data of SPD units of SPD units are surveyed, into step S20；
S20：Judge whether the value of the decline of pressure sensitive voltage reaches the preset ratio of initial value；If reaching, this is recorded
When the temperature of the SPD units and temperature difference of environment temperature, record the temperature difference as threshold difference.
Optionally, in the step S10, dash current further is applied to taken SPD units.
Optionally, in the step S20, the preset ratio is 10%.
Optionally, in the step S50, the default action includes carrying out active disjunction to the SPD units.
Optionally, in the step S50, the default action includes being alarmed by warning device.
Optionally, in the step S10, multiple SPD units are taken, respectively under different environment temperature sections, to it
Apply electric current；
In the step S20, the threshold difference under corresponding environment temperature section is obtained；
In the step S50, resulting temperature difference is compared with the threshold difference in corresponding environment temperature section
Compared with.
Optionally, after the step S40, in addition to：According to the data of step S40 collections, obtain its surge and feelings occur
Condition, obtain the surge energy of each secondary surge；, into step S60；
S60：Accumulation calculates the statistic that surge energy has occurred and working time, whole with reference to the SPD units
The energy summation that can bear during work, reckoning obtain the remaining life of the SPD units.
Optionally, after the step S40, in addition to：Temperature data according to step S40 collections determines this surge
The gradient and amplitude of SPD unit temperature rises, in the step S60, the surge of different gradients and amplitude is accumulated with different coefficients
Calculate the statistic of surge energy..
Optionally, judged according to the temperature data gathered；If judge the pace of change and amplitude of SPD unit temperature rises
At least one change exceed threshold value, then judge occur surge.
Judgement of the present invention by the use of the temperature difference between SPD units and environment temperature as SPD cell failure situations according to
According to, furthermore, it is understood that first passing through advance experiment, the corresponding relation of temperature difference and failure situation is obtained, it is then mono- in use SPD
, can be according to the temperature difference detected by the result matching of experiment when first, and then obtain the failure situation of SPD units.
Brief description of the drawings
Fig. 1 be one embodiment of the invention provide judge that the flow of the method for surge protector trouble situation is shown using the temperature difference
It is intended to；
Fig. 2 is the system signal for the method for judging surge protector trouble situation in one embodiment of the invention using the temperature difference
Figure.
Embodiment
Below with reference to Fig. 1 and Fig. 2 to the method provided by the invention that surge protector trouble situation is judged using the temperature difference
It is described in detail, it is optional embodiment of the present invention, it is believed that those skilled in the art are not changing essence of the invention
God can modify and polish to it with the range of content.
Fig. 1 is refer to, the invention provides a kind of method that surge protector trouble situation is judged using the temperature difference, including：
S00：A kind of SPD units are provided；This step can be understood as determining targeted SPD units for it is specific which kind of, than
Such as which model；The pre-detection so completed for the step S10 of the SPD units of the model to step S20, can be answered
Failure situation for other SPD units of same model judges.
S10：One of this kind of SPD unit or multiple, or its raw material are taken, electric current is applied to it；It is of the invention further
In alternative embodiment, dash current further is applied to taken SPD units；Pressure sensitive voltage data, the SPD for detecting SPD units are mono-
The temperature data and ambient temperature data of member, for example, a pressure sensitive voltage data can be surveyed, directly with every impact several times
Reach the preset ratio of initial value to dropping to for surveyed pressure sensitive voltage, i.e., into step S20；
S20：Judge whether the value of the decline of pressure sensitive voltage reaches the preset ratio of initial value；If reaching, this is recorded
When the temperature of the SPD units and temperature difference of environment temperature, record the temperature difference as threshold difference；In the optional implementation of the present invention
In example, the preset ratio is confirmed as 10%, and this can specifically set according to the general knowledge in industry, and the experience of specific personnel
Meter, the present invention preferably 10%, but also not limited to this；
In above step, advance test is had been completed, establishes the corresponding relation of temperature difference and failure situation；
It is pointed out that in the preferred embodiment of the invention, in the step S10, multiple SPD units are taken, point
Not under different environment temperature sections, electric current is applied to it；
In the step S20, the threshold difference under corresponding environment temperature section is obtained；
Certainly, environment temperature section here can also remove an One-Point-Value, do this design, mainly consider different temperatures
Under environment, the corresponding relation of its temperature difference and failure situation might have difference, natural when being hereafter compared on this basis
Be by resulting temperature difference compared with the threshold difference in corresponding environment temperature section；
Above step S10 and S20 give the process of threshold value temperature difference, however, in other optional implementations of the invention
In example, it can also be obtained by theoretical calculation or other experiment methods, and not limited to this, following detection process, side are the present invention
Make every effort to the scheme of protection.
For example, can be by detecting whether Leakage Current goes beyond the limit of in other alternative embodiments of the invention, can
Obtain temperature difference threshold；It can also be used whether capacitance is gone beyond the limit of to determine temperature difference threshold.
S30：One of them or such multiple SPD unit are taken, access power-supply system is used；
S40：Monitor the temperature and the temperature of environment where it of SPD units；
S50：Calculation procedure S40 monitors the temperature of obtained SPD units and the temperature difference of place environment temperature, by itself and step
The threshold difference that rapid S20 is obtained is compared；
If being less than, return to step S40；
If being not less than, default action is carried out.
Here default action include it is various, in optional embodiment of the present invention, it is described it is default action include to this
SPD units carry out active disjunction, in this scenario, no longer passive to wait, but SPD units are carried out actively according to testing result
Operation, specific disjunction mode can be fusing, but also not limited to this.It is described default in optional embodiment of the present invention
Action can also include being alarmed by warning device.Certainly, the present invention is naturally also not excluded for the situation of various motion combination.
In optional embodiment of the present invention, after the step S40, in addition to：The data gathered according to step S40,
Obtaining its surge, a situation arises, obtains the surge energy of each secondary surge；, into step S70；Detailed process can be first according to this
Whether a little data, judge whether it occurs surge, then calculate the energy of surge, can also be first not to surge occurring sentencing
It is disconnected, energy is calculated respectively, or energy curve is obtained, when counting calculating, being screened according to curve or the energy datum calculated is
No is surge energy, and the energy of non-surge is calculated with the statistics of coefficient 0, or other are not required to the energy of record.
S60：Accumulation calculates the statistic that surge energy has occurred and working time, whole with reference to the SPD units
The energy summation that can bear during work, reckoning obtain the remaining life of the SPD units.
In optional embodiment of the present invention, after the step S40, in addition to：Temperature number according to step S40 collections
According to the gradient and amplitude of the SPD unit temperature rises for determining this surge, in the step S60, the surge of different gradients and amplitude
The statistic of surge energy is calculated with different coefficient accumulations.Why is specific coefficient, can be according to the warp of those skilled in the art
Test judgement or grope to obtain by limited trials
On wherein how to judge whether that surge occurs, the measure that alternative of the present invention provides is：
Judged according to the temperature data gathered；If judge SPD unit temperature rises pace of change and amplitude at least it
One change exceeds threshold value, then judges surge occurs.
But the present invention is not limited thereto, can also effectively find the generation of surge by the monitoring to electric current, no matter for
Which, is all one of optional scheme of the invention.
It should be noted that the result of study drawn according to substantial amounts of test data shows, SPD working life with its
The summation for the surge energy born during whole work is closely related.The integration of the Current versus time of this surge energy surge
Represent (might not so be calculated), unit A.s, also referred to as protector ampere-second resource.Research shows for same
The SPD of type, its have ampere-second resource relatively, therefore manufacturer can confirm this of protector in process
Parameter, i.e., " energy summation that the SPD units can bear during entirely working " mentioned above is can be manufactured in SPD
At the beginning of obtain, either by theoretical calculation still by limited trials, it does not probe into scope in the present invention.
After manufacturing process being completed using the protector manufactured with a batch of piezo-resistance, if being placed on identical uses ring
In border, the life-span that they show will be fairly close, and this life-span can be regarded as the ampere-second resource of piezo-resistance.In principle with electricity
Gushing current system can be with different by being consumed under the consumption of caused ampere-second and steady-state power conditions by caused ampere-second
Conversion factor is added in the calculating for reducing ampere-second resource, i.e., mentioned above to calculate its surge energy with different coefficient accumulations
Statistic, certainly, for specific calculation, the coefficient may also be 0.So in clear and definite current depletion rate and remain
It is remaining consume resource in the case of, the remaining life-span can be calculated naturally, certainly, its can also introduce other it is specific because
Element, establishes increasingly complex mathematical modeling, but no matter its model why, without departure from present invention basic ideas mentioned above.
In summary, the present invention is used as SPD cell failure situations by the use of the temperature difference between SPD units and environment temperature
Basis for estimation, furthermore, it is understood that first passing through advance experiment, obtain the corresponding relation of temperature difference and failure situation, Ran Hou
, can be according to the temperature difference detected by the result matching of experiment during using SPD units, and then obtain the failure feelings of SPD units
Condition.
Claims (8)
- A kind of 1. method that surge protector trouble situation is judged using the temperature difference, it is characterised in that：Including：S00：A kind of SPD units are provided；S10：One of this kind of SPD unit or multiple, or its raw material are taken, electric current is applied to it；Detect the pressure-sensitive of SPD units The temperature data and ambient temperature data of voltage data, SPD units, into step S20；S20：Judge whether the value of the decline of pressure sensitive voltage reaches the preset ratio of initial value；If reaching, now SPD is recorded The temperature of unit and the temperature difference of environment temperature, the temperature difference is recorded as threshold difference；S30：One of such SPD unit or multiple is taken, access power-supply system is used；S40：Monitor the temperature and the temperature of environment where it of SPD units；S50：Calculation procedure S40 monitors the temperature of obtained SPD units and the temperature difference of place environment temperature, and it is obtained with advance To threshold difference be compared；If being less than, return to step S40；If being not less than, default action is carried out.
- 2. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 1, it is characterised in that：Described In step S10, dash current further is applied to taken SPD units.
- 3. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 1, it is characterised in that：Described In step S10, multiple SPD units are taken, respectively under different environment temperature sections, electric current is applied to it；In the step S20, the threshold difference under corresponding environment temperature section is obtained；In the step S50, by resulting temperature difference compared with the threshold difference in corresponding environment temperature section.
- 4. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 1, it is characterised in that：Described In step S50, the default action includes carrying out active disjunction to the SPD units.
- 5. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 1, it is characterised in that：Described In step S50, the default action includes being alarmed by warning device.
- 6. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 1, it is characterised in that：Described After step S40, in addition to：According to the data of step S40 collections, obtaining its surge, a situation arises, obtains the surge of each secondary surge Energy；Into step S60；S60：Accumulation calculates the statistic that surge energy has occurred and working time, is entirely worked with reference to the SPD units The energy summation that period can bear, reckoning obtain the remaining life of the SPD units.
- 7. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 6, it is characterised in that：Described After step S40, in addition to：Temperature data according to step S40 collections determines the gradient and width of the SPD unit temperature rises of this surge Value, in the step S60, the surge of different gradients and amplitude calculates the statistic of surge energy with different coefficient accumulations.
- 8. the method for surge protector trouble situation is judged using the temperature difference as claimed in claim 6, it is characterised in that：According to institute The temperature data of collection is judged；If judging, the change of the pace of change and at least one amplitude of SPD unit temperature rises exceeds threshold Value, then judge surge occurs, and then obtain the surge energy of this surge.
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| CN201610066859.1A CN105552874B (en) | 2016-01-29 | 2016-01-29 | The method of surge protector trouble situation is judged using the temperature difference |
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| CN107462789B (en) * | 2017-07-17 | 2020-06-09 | 南京宁普防雷设备制造有限公司 | Method for analyzing service life and failure of surge protector on line |
| DE102020211487A1 (en) * | 2020-09-14 | 2022-03-17 | Siemens Energy Global GmbH & Co. KG | Arrester system of arresters connected in parallel and method for detecting arrester defects |
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| JPS61120403A (en) * | 1984-11-16 | 1986-06-07 | 富士電機株式会社 | Deterioration detector for gapless lightning arrestor |
| CN101064430A (en) * | 2007-05-08 | 2007-10-31 | 桂林工学院 | Intelligent power arrester |
| CN102393929A (en) * | 2011-11-28 | 2012-03-28 | 江苏方天电力技术有限公司 | State overhauling control method of distribution network equipment state assessment system |
| CN202230150U (en) * | 2011-09-05 | 2012-05-23 | 上海格蒂电力科技股份有限公司 | On-line monitoring intelligent terminal for electric power lightning arrester with fiber for power supply |
| CN103715652A (en) * | 2014-01-13 | 2014-04-09 | 上海万谱电器有限公司 | Intelligent backup protection disconnecting device for surge protection devices |
| CN204030572U (en) * | 2014-03-28 | 2014-12-17 | 上海森图机电设备有限公司 | Surge Protector lifetime monitoring apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230172A (en) * | 1983-06-13 | 1984-12-24 | Mitsubishi Electric Corp | Detecting method of deterioration of lightning arrester |
| TW556382B (en) * | 2002-03-15 | 2003-10-01 | Prolific Technology Inc | Power protection |
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2016
- 2016-01-29 CN CN201610066859.1A patent/CN105552874B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61120403A (en) * | 1984-11-16 | 1986-06-07 | 富士電機株式会社 | Deterioration detector for gapless lightning arrestor |
| CN101064430A (en) * | 2007-05-08 | 2007-10-31 | 桂林工学院 | Intelligent power arrester |
| CN202230150U (en) * | 2011-09-05 | 2012-05-23 | 上海格蒂电力科技股份有限公司 | On-line monitoring intelligent terminal for electric power lightning arrester with fiber for power supply |
| CN102393929A (en) * | 2011-11-28 | 2012-03-28 | 江苏方天电力技术有限公司 | State overhauling control method of distribution network equipment state assessment system |
| CN103715652A (en) * | 2014-01-13 | 2014-04-09 | 上海万谱电器有限公司 | Intelligent backup protection disconnecting device for surge protection devices |
| CN204030572U (en) * | 2014-03-28 | 2014-12-17 | 上海森图机电设备有限公司 | Surge Protector lifetime monitoring apparatus |
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