CN102183702A - Testing method and device used in direct current short circuit test of surge protective device - Google Patents
Testing method and device used in direct current short circuit test of surge protective device Download PDFInfo
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- CN102183702A CN102183702A CN201110065437XA CN201110065437A CN102183702A CN 102183702 A CN102183702 A CN 102183702A CN 201110065437X A CN201110065437X A CN 201110065437XA CN 201110065437 A CN201110065437 A CN 201110065437A CN 102183702 A CN102183702 A CN 102183702A
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Abstract
The invention discloses a testing method and a testing device used in a direct current short circuit test of a surge protective device (SPD). By the invention, the direct current short circuit test on the surge protective device can be performed under different conditions and the direct current short circuit performance of the surge protective device can be determined. The device comprises an intelligent control module, a high-power direct current test power supply, a high-power variable resistance box and a sample box, wherein the high-power variable resistance box is in signal communication with the high-power direct current test power supply and the sample box respectively; and the intelligent control module is in control connection with the high-power direct current test power supply, the high-power variable resistance box and the sample box respectively. The invention has advantages that: the method is comprehensively practicable, the device is simple in structure, the test is safe and reliable and the like, so that the invention can be widely applied to a solar power direct current system and an alternating current (AC)/direct current (DC) system.
Description
Technical field
The invention belongs to the electrical engineering technical field, particularly a kind of surge protector (SPD) direct-current short circuit current testing method of inspection and device.
Background technology
China greatly develops clean energy resource in recent years, solar electrical energy generation is as one of energy of cleanliness, obtained fast development, direct current SPD is widely used in solar photovoltaic generation system, and the direct current SPD quantity of using in this external AC conversion DC straight-flow system, electric pressure are also more and more.For preventing that straight-flow system SPD lost efficacy, damages under the low-resistance pattern direct-current short circuit electric current or overload current flows through fire and the system short-circuit accident that direct current SPD may cause, be badly in need of development research corresponding straight-flow system surge protector direct-current short circuit experimental examination method and device.SPD direct-current short circuit current testing is an important tests of examination SPD overcurrent protective device and himself security performance, and the SPD that present straight-flow system is used does not also propose the direct-current short circuit current testing and formulates relevant test stone.Patent of the present invention proposes a kind of surge protector direct-current short circuit test method; this test method is taken into account the system short-circuit electric current difference of real system under different service conditions; proposition can be chosen in the SPD direct-current short circuit test of carrying out different scales under seven trial curves, and has developed one according to this test method and overlapped the test unit that is used for the test of surge protector direct-current short circuit.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at the above-mentioned background technology, and a kind of surge protector direct-current short circuit experimental examination method and device are provided.
Technical scheme of the present invention is:
One, a kind of surge protector (SPD) direct-current short circuit experimental examination method is characterized in that comprising the following steps:
Step 1(tests preparation): the SPD of same type is randomly drawed the product of some, and substitutes part with derby and substitute its inner voltage switch element, and guarantee its connected mode, material around and pack constant, standby to make test product;
Step 2(fundamental test): test product and disconnector are placed in the square tub, and the tub side is from test product outside surface (500 ± 50) mm, and the inside surface of tub covers with thin paper or gauze; Different test products is applied 10A, I at its two input end respectively
SC(the maximum short circuit DC current of the expection of standard conditions system), 2I
SC, 3I
SC, 4I
SC, 5I
SC, 6I
SCTrial voltage, and the trial voltage of keeping its two ends simultaneously is at 0-U
OVBetween (the maximum open circuit of the expection of standard conditions system DC voltage is reflected in the situation of fullest at sunshine); Under these conditions, observe and whether whether record cover the thin paper of tub inside surface or gauze and catch fire and have outside in the test product of the separation function device that comes off and forever disconnect;
Step 3(checks judgement): according to the observed and recorded result of step 2, the thin paper of tub inside surface or gauze do not catch fire or the disconnector that has in the test product of separation function forever disconnected in the pressing time of regulation if cover, and then show the excellent performance of the type surge protector; Otherwise, show that then the performance of the type surge protector has problems.
Have as improving of said method with optimal way:
1, described step 2(fundamental test), under same test condition, with different test product test 3 times;
2, at described step 2(fundamental test) and step 3(check judge) between a complementary testing step is arranged.Promptly at step 2(fundamental test) finish after, apply its maximum continuous running voltage Uc again at the two ends of test product and kept 1 minute, measure the DC current that its two ends are flow through; When the effective value of its DC current≤0.5mA, show that then its device that comes off forever disconnects.
3, described step 2(fundamental test), be with the corresponding test period of test DC current:
A, when the test DC current be I
SC---6I
SCThe time, its test period is the trip time of overcurrent protection, main protection and back-up protection in the straight-flow system of surge protector place for (2-10) T(T);
B, when test DC current when being 10A, its test period is 10-30 minutes.
Two, a kind of surge protector (SPD) direct-current short circuit experimental examination device designs according to said method.It is characterized in that comprising intelligent control module, high power DC experiment power supply, high power varying resistance box and test product case; Its high power varying resistance box realizes that with high power DC experiment power supply, test product case signal is connected respectively, and its intelligent control module is realized controlled the connection with high power DC experiment power supply, high power varying resistance box and test product case respectively.
Optimal way as said apparatus has:
1, described intelligent control module adopts programmable logic controller (PLC) (PCL), realizes comprising high power DC experiment
The switching of the switching in source and the adjusting of its DC voltage, high power varying resistance box and be adjusted in control.
2, described high power DC experiment power supply adopts the three-phase controllable silicon rectification, include fuse, high-power contactor, three-phase transformer, high-power thyristor module, high-power thyristor control module, flat ripple reactance and electric capacity of voltage regulation, its voltage output range is: 500VDC-1500V DC, its electric current output area is: 0-600A DC.
3, described high power varying resistance box includes contactor, high-power resistance, cooling fan, temperature sensor, this control button, blast switch;
4, the described test product case wooden case that includes fuse group, vent fan and make by fire prevention timber; Wherein the fuse group is provided with the multiple model outside that is used with the different model surge protector suitable fuse base of device that comes off.
Surge protector direct-current short circuit experimental examination method of the present invention is chosen under following 7 kinds of conditions and carries out, and its corresponding respectively duty is:
Condition 1: test current is 6I
SC, trial voltage is 0-U
OV, be illustrated under the situation of fullest at sunshine, system may have maximum parameter value;
Condition 2: test current is 5I
SC, trial voltage is 0-U
OV, be illustrated under the different situation of intensity of sunshine, system may have maximum parameter value;
Condition 3: test current is 4I
SC, trial voltage is 0-U
OV, be illustrated under the different situation of intensity of sunshine, system may have maximum parameter value;
Condition 4: test current is 3I
SC, trial voltage is 0-U
OV, be illustrated under the different situation of intensity of sunshine, system may have maximum parameter value;
Condition 5: test current is 2I
SC, trial voltage is 0-U
OV, be illustrated under the different situation of intensity of sunshine, system may have maximum parameter value;
Condition 6: test current is I
SC, trial voltage is 0-U
OV, be illustrated under the more weak situation at sunshine the maximum parameter value that system may have;
Condition 7: test current is 10A, and trial voltage is 0-U
OV, the expression test product is stated its maximum short circuit withstand current I
SCWhen being not more than 10A, need test by this condition.
During test:
1, should adopt proper metal (for example, copper) piece (component models) to replace the voltage switch element among the SPD that extracts, and guarantee inner the connection, the cross section of connection and material on every side (for example, resin) and pack constant, with as test product.
2, test product and disconnector are placed in the square tub, the tub side is from test product outside surface (500 ± 50) mm.The inside surface of box covers with thin paper or gauze.The one side of box (not being the bottom surface) stays open, so that can connect feed cable by makers' explanation.Test specimen is installed according to the mode of manufacturing plant's regulation, and uses the lead of maximum cross-section area, is no more than 0.5m in test product case internal connecting wire length.
3,, all prepare one group 3 test product for the test of every kind of condition.Test product is abideed by the requirement installation of manufacturer, if manufacturer's statement has outside disconnector, needs to install.When carrying out the test of every kind of condition, the overcurrent protection of should in hookup, connecting, the rated current of this overcurrent protection should be I
SC80% ~ 120%.If manufacturer statement outside disconnector is arranged the time, the outside disconnector that this overcurrent protection can be stated with manufacturer is same model.When if manufacturer does not state outside disconnector, can select the fuse of gR model.
4, test period: test condition 1-6 times, according to overcurrent protection, main protection and back-up protection trip time in the straight-flow system of SPD place, consider 2 times to 20 times nargin, determine the test period under the corresponding short-circuit current multiple; Test condition 7 times according to system protection importance and protection configuration state, can be determined by 10-30min.Short-circuit current is in the time, and the overcurrent protection of test unit does not allow action.
5, check is judged: in the process of the test, if thin paper or gauze catch fire, show that then product is defective, stop test immediately; Under thin paper or the non-ignitable prerequisite of gauze, if the disconnector action, and the sign of disconnection significantly, effectively and is forever arranged, show that then product is qualified available.In actual the use, move in order to verify disconnector, and tangible, the effective and permanent sign that disconnects is arranged, should adopt the power-frequency voltage that equals Uc to apply 1min, the electric current that flows through should not surpass the 0.5mA(effective value).
Surge protector direct-current short circuit experimental examination device of the present invention: 1, the unlatching of its intelligent control module control high-power DC power supply or close, the adjusting of DC voltage; automatically the resistance value switching with the high power varying resistance box arrives corresponding gear to satisfy the requirement of test; intelligent control module is based on that PLC and touch-screen operate; The whole control is simple and reliable, operation interface close friend attractive in appearance.2, its high power DC experiment power supply adopts the controlled thyristor module to carry out rectification and pressure regulation, by high-power contactor control high power DC experiment power supply switching, fuse guarantees that high power DC experiment power supply is operated within the rated range, the alternating voltage of three-phase transformer being exported by the high-power thyristor module carries out rectification, the output of the conduction angle control voltage of thyristor control module control thyristor module, flat ripple reactance and electric capacity of voltage regulation are used for reducing the ripple factor of rectifier output voltage.3, its high power varying resistance box makes up different resistance by contactor and satisfies trial curve under the different tests condition of stipulating in the test method, cooling fan, temperature sensor and blast switch guarantee the operation that resistance box is safe and reliable, can control the contactor switching that button and relay group are controlled different gear resistance on the spot by this, also can control the contactor switching of different gear resistance in the distance by touch-screen.4, its test product case is made up of fuse group, vent fan, wooden case body; the fuse assembly has been equipped with five kinds of different fuse bases; the model of the disconnector that all and surge protector be used can be installed; it is convenient to change; the wooden case body adopts the fire prevention producing wood; appearance looks elegant is generous, and vent fan is guaranteed wooden case body inner air convection, in time discharges to be used for the dense smoke that the Surge Protector burning is produced.
The present invention can finish surge protector direct-current short circuit test under various conditions, and can pass judgment on the direct-current short circuit performance of surge protector on this basis.Have advantages such as method is feasible comprehensively, apparatus structure is simple, experimental safe is reliable.Can change widespread use in the DC straight-flow system at solar electrical energy generation straight-flow system, AC.
Description of drawings
Fig. 1 is a surge protector direct-current short circuit current testing method synoptic diagram (being the electric current-voltage curve under the different tests condition);
Fig. 2 is a SPD direct-current short circuit pilot system block diagram;
Fig. 3 is the high power DC experiment power supply wiring diagram;
Fig. 4 is the internal control figure of high power varying resistance box;
Fig. 5 is a test product box structure synoptic diagram;
Wherein:
1-intelligent control module;
2-high power DC experiment power supply
2.1-fuse, 2.2-contactor, 2.3-three-phase transformer, 2.4-high-power thyristor module, 2.5-thyristor control module, 2.6-flat ripple reactance, 2.7-electric capacity of voltage regulation.
3-high power varying resistance box
3.1-high-power resistance, 3.2-contactor, 3.3-cooling fan, 3.4-temperature sensor, 3.5-this control button, 3.6-Switching Power Supply, 3.7-relay group, 3.8-blast switch.
4-test product case
4.1-fuse group, 4.2-vent fan, 4.3-wooden case body.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment device of the present invention is further described:
The present invention adopts modular design, and referring to Fig. 2, principle of work is to select corresponding test condition to test by intelligent control module (1).When beginning to test, make high power DC experiment power supply (2) charged, different tests mode according to every kind of condition regulation is exported by the voltage of intelligent control module (1) control high power DC experiment power supply (2), and the resistance of high power varying resistance box (4) satisfies the prospective short circuit current value that output is set, and tests for the test product in test product case (5).
Fig. 3 is the wiring diagram of high power DC experiment power supply, by high-power contactor (2.2) control high power DC experiment power supply switching, fuse (2.1) guarantees that high power DC experiment power supply is operated within the rated range, the alternating voltage of three-phase transformer (2.3) being exported by high-power thyristor module (2.4) carries out rectification, the output of the conduction angle control voltage of thyristor control module (2.5) control high-power thyristor module, flat ripple reactance (2.6) and electric capacity of voltage regulation (2.7) are used for reducing the ripple factor of rectifier output voltage.
Fig. 4 is the internal control figure of high power varying resistance box, variable resistance box is made up of many groups resistance (3.1) connection in series-parallel, realize different connection in series-parallel combinations by contactor (3.2), reach the resistance value that needs, control and Long-distance Control are brought in by this output of controlling button (3.5) and intelligent control module and are finished on the spot, can realize two kinds of control modes, user-friendly.Blast switch (3.8) is used for ensureing that cooling fan (3.3) is in normal operating conditions, and temperature sensor (3.4) reflected resistance case internal temperature guarantees that resistance box is operated in the rated temperature range.
Fig. 5 is test product box structure figure, and fuse group (4.1) has been equipped with five kinds of different fuse bases, and the disconnector model that is used with Surge Protector can be installed.Wooden case body (4.3) adopts the fire prevention producing wood, and vent fan (4.2) is guaranteed wooden case body (4.3) inner air convection, in time discharges to be used for the dense smoke that the Surge Protector burning is produced.
Claims (9)
1. a surge protector (SPD) direct-current short circuit experimental examination method is characterized in that comprising the following steps:
Step 1(tests preparation): the SPD of same type is randomly drawed the product of some, and substitutes part with derby and substitute its inner voltage switch element, and guarantee its connected mode, material around and pack constant, standby to make test product;
Step 2(fundamental test): test product and disconnector are placed in the square tub, and the tub side is from test product outside surface (500 ± 50) mm, and the inside surface of tub covers with thin paper or gauze; Different test products is applied 10A, I at its two input end respectively
SC(the maximum short circuit DC current of the expection of standard conditions system), 2I
SC, 3I
SC, 4I
SC, 5I
SC, 6I
SCTrial voltage, and the trial voltage of keeping its two ends simultaneously is 0-U
OVBetween (the maximum open circuit of the expection of standard conditions system DC voltage); Under these conditions, observe and whether whether record cover the thin paper of tub inside surface or gauze and catch fire and have outside in the test product of the separation function device that comes off and forever disconnect in the pressing time of regulation;
Step 3(checks judgement): according to the observed and recorded result of step 2, the thin paper of tub inside surface or gauze do not catch fire or the disconnector that has in the test product of separation function forever disconnected in the pressing time of regulation if cover, and then show the excellent performance of the type surge protector; Otherwise, show that then the performance of the type surge protector has problems.
2. a kind of surge protector according to claim 1 (SPD) direct-current short circuit experimental examination method is characterized in that: described step 2(fundamental test), under same test condition, with different test product test 3 times.
3. a kind of surge protector according to claim 1 and 2 (SPD) direct-current short circuit experimental examination method is characterized in that: at described step 2(fundamental test) and step 3(check judge) between a complementary testing step is arranged; Promptly at step 2(fundamental test) finish after, apply its maximum continuous running voltage Uc again at the test product two ends and kept 1 minute, measure the DC current that its two ends are flow through; When the effective value of its DC current≤0.5mA, show that then its device that comes off forever disconnects.
4. a kind of surge protector according to claim 1 and 2 (SPD) direct-current short circuit experimental examination method is characterized in that: described step 2(fundamental test), with the corresponding test period of test DC current be:
A, when the test DC current be I
SC---6I
SCThe time, its test period is the trip time of overcurrent protection, main protection and back-up protection in the straight-flow system of surge protector place for (2-10) T(T);
B, when test DC current when being 10A, its test period is 10-30 minutes.
5. a surge protector direct-current short circuit experimental examination device is characterized in that: comprise intelligent control module, big merit
Rate DC experiment power supply, high power varying resistance box and test product case; Its high power varying resistance box realizes that with high power DC experiment power supply, test product case signal is connected respectively, and its intelligent control module is realized controlled the connection with high power DC experiment power supply, high power varying resistance box and test product case respectively.
6. a kind of surge protector direct-current short circuit experimental examination device according to claim 5 is characterized in that: described
Intelligent control module adopt programmable logic controller (PLC) (PLC), realize comprising the switching of high power DC experiment power supply and its DC voltage adjusting, high power varying resistance box switching and be adjusted in control.
7. according to claim 5 or 6 described a kind of surge protector direct-current short circuit experimental examination devices, it is characterized in that:
Described high power DC experiment power supply adopts the three-phase controllable silicon rectification, include fuse, high-power contactor, three-phase transformer, high-power thyristor module, high-power thyristor control module, flat ripple reactance and electric capacity of voltage regulation, its voltage output range is: 500VDC-1500V DC, its electric current output area is: 0-600A DC.
8. according to claim 5 or 6 described a kind of surge protector direct-current short circuit experimental examination devices, it is characterized in that: described high power varying resistance box includes contactor, high-power resistance resistance, cooling fan, temperature sensor, this control button, blast switch.
9. according to claim 5 or 6 described a kind of surge protector direct-current short circuit experimental examination devices, it is characterized in that: the wooden case that described test product case includes fuse group, vent fan and made by fire prevention timber; Wherein the fuse group is provided with the multiple model outside that is used with the different model surge protector suitable fuse base of device that comes off.
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| CN201110065437.XA CN102183702B (en) | 2011-03-18 | 2011-03-18 | Testing method and device used in direct current short circuit test of surge protective device |
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| CN201110065437.XA CN102183702B (en) | 2011-03-18 | 2011-03-18 | Testing method and device used in direct current short circuit test of surge protective device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323513A (en) * | 2011-09-16 | 2012-01-18 | 河北省电力建设调整试验所 | Short-circuit test method of card holder of card-inserting electric energy meter |
| CN102435887A (en) * | 2011-10-12 | 2012-05-02 | 成都兴业雷安电子有限公司 | Test object cabinet for testing anticipated short-circuit current of SPD (surge protection device) |
| CN107300643A (en) * | 2016-04-15 | 2017-10-27 | 株洲中车时代电气股份有限公司 | A kind of vehicle traction system supply voltage mutant test device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166694Y (en) * | 2008-02-27 | 2008-12-17 | 武汉新电电气技术有限责任公司 | Portable tester for surge protector |
| CN201417292Y (en) * | 2009-04-08 | 2010-03-03 | 武汉大学 | Surge protector heat stabilization test device |
| CN201740830U (en) * | 2010-08-03 | 2011-02-09 | 南京信息工程大学 | Surge protector thermal stability testing device |
| CN101975902A (en) * | 2010-10-15 | 2011-02-16 | 北京清网华科技有限公司 | Intelligent detector for embedded system surge protection device (SPD) |
-
2011
- 2011-03-18 CN CN201110065437.XA patent/CN102183702B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166694Y (en) * | 2008-02-27 | 2008-12-17 | 武汉新电电气技术有限责任公司 | Portable tester for surge protector |
| CN201417292Y (en) * | 2009-04-08 | 2010-03-03 | 武汉大学 | Surge protector heat stabilization test device |
| CN201740830U (en) * | 2010-08-03 | 2011-02-09 | 南京信息工程大学 | Surge protector thermal stability testing device |
| CN101975902A (en) * | 2010-10-15 | 2011-02-16 | 北京清网华科技有限公司 | Intelligent detector for embedded system surge protection device (SPD) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323513A (en) * | 2011-09-16 | 2012-01-18 | 河北省电力建设调整试验所 | Short-circuit test method of card holder of card-inserting electric energy meter |
| CN102435887A (en) * | 2011-10-12 | 2012-05-02 | 成都兴业雷安电子有限公司 | Test object cabinet for testing anticipated short-circuit current of SPD (surge protection device) |
| CN107300643A (en) * | 2016-04-15 | 2017-10-27 | 株洲中车时代电气股份有限公司 | A kind of vehicle traction system supply voltage mutant test device and method |
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|---|---|
| CN102183702B (en) | 2014-02-26 |
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