CN108535645A - A kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function - Google Patents
A kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function Download PDFInfo
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- CN108535645A CN108535645A CN201810371648.8A CN201810371648A CN108535645A CN 108535645 A CN108535645 A CN 108535645A CN 201810371648 A CN201810371648 A CN 201810371648A CN 108535645 A CN108535645 A CN 108535645A
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/333—Testing of the switching capacity of high-voltage circuit-breakers ; Testing of breaking capacity or related variables, e.g. post arc current or transient recovery voltage
- G01R31/3333—Apparatus, systems or circuits therefor
- G01R31/3336—Synthetic testing, i.e. with separate current and voltage generators simulating distance fault conditions
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Abstract
The present invention provides a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function,The singlephase earth fault test includes carrying out singlephase earth fault test wiring,Pole-mounted circuit breaker is in "on" position,Select the output end of any one phase enter line side access rising current transformer T of pole-mounted circuit breaker,Pole-mounted circuit breaker outgoing line side is grounded,In addition two-phase outputs and inputs side difference short circuit,Carry out singlephase earth fault test,The phase fault experiment includes carrying out phase fault test connection,Pole-mounted circuit breaker is in "on" position,Pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1,The output end of T2 and T3,Pole-mounted circuit breaker outgoing line side short circuit is grounded,Carry out phase fault experiment,The angle that the present invention is merged from one or two times comprehensively tests the defencive function of pole-mounted circuit breaker,Singlephase earth fault can accurately be simulated,Under the conditions of phase fault,Whether breaker actuation is correct,Whether the failure of malfunction or tripping can be occurred.
Description
Technical field
The present invention relates to pole-mounted circuit breakers to test field, melts for one or two times more particularly to a kind of pole-mounted circuit breaker defencive function
Close test method.
Background technology
Pole-mounted circuit breaker is widely used as distributed protection equipment in the contact, segmentation and branch line of distribution.Not
Come in the construction of intelligent grid, pole-mounted circuit breaker will play more and more positive effect.Currently, the experiment item of pole-mounted circuit breaker
Mesh includes mainly the experiment to ontology such as insulation, mechanical property, Wen Sheng, degree of protection, and the angle not merged from one or two times is complete
It is tested in face of defencive function, leads to the accident that will appear malfunction or tripping in actual operation.
With the pole-mounted circuit breaker that single phase earthing protection and phase fault are protected electricity is configured in A, C phase enter line side
Current transformer, outgoing line side configure zero sequence current mutual inductor, coordinate with buckle releaser and operating mechanism to realize singlephase earth fault, phase
Between short trouble quick-break and overcurrent breaker protect separating brake.One or two test for fusion of pole-mounted circuit breaker defencive function are sought to
Under the conditions of simulating singlephase earth fault, phase fault, whether breaker actuation is correct, if malfunction or tripping can occur
Failure, checks whether mutual inductor, buckle releaser, operating mechanism and arc-chutes dynamic/static contact can be coordinated correctly to act.
Invention content
The present invention provides a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function, is carried out comprehensively to defencive function
Experiment.
Technical scheme of the present invention：A kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function, including single-phase connect
Earth fault is tested and phase fault experiment, the singlephase earth fault test include the following steps,
1) experiment power supply connects rising current transformer T, and power supply is arranged between experiment power supply and the input terminal of rising current transformer T
The input terminal of circuit breaker Q, rising current transformer T also installs electronic automatic coupling voltage regulator TV, and the output end of rising current transformer T connects electric current
Mutual inductor TA, current transformer TA connect external ammeter PA, ammeter PA connections current stabilizing controller QA, current stabilizing controller QA
Connect rising current transformer T and electronic automatic coupling voltage regulator TV；
2) pole-mounted circuit breaker is in "on" position, selects any one phase enter line side access rising current transformer T of pole-mounted circuit breaker
Output end, pole-mounted circuit breaker outgoing line side ground connection, in addition two-phase output and input side difference short circuit；
3) breaker zero-sequenceprotection delay definite value is set to 0s, setting zero-sequenceprotection setting valve is I0i；
4) power on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV makes electric current gradually increase, until breaker actuation,
The current value I of record at this time0t。
5) repeat to test, the error of each breaker actuation electric current and setting valve should be not more than ± 10%；
6) step 2)~5 are repeated in other two-phase), complete starting current experiment；
7) zero-sequenceprotection delay definite value is set to t0i, setting zero-sequenceprotection setting valve is I '0i；
8) pole-mounted circuit breaker is in "on" position, and any one phase enter line side of breaker is selected to access the defeated of rising current transformer T
Outlet, breaker outgoing line side are grounded, and in addition two-phase outputs and inputs side difference short circuit；
9) pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV makes electricity
Stream reaches preset value I '0i, deenergization circuit breaker Q；
10) pole-mounted circuit breaker trip coil is connected, and pole-mounted circuit breaker is closed a floodgate, power on circuit breaker Q, measured
Time interval t of the pole-mounted circuit breaker from application test current to breaker open operation0t；
11) repeat to test, pole-mounted circuit breaker is delayed from the time interval for applying test current to breaker open operation
t0tMeasurement average value and delay adjustments time t0iCompare, error should be not more than 1% or 40ms；
12) step 7)~11 are repeated in other two-phase), complete Extended Time Tests.
The phase fault, which is tested, to be included the following steps,
A. three-phase test power supply is separately connected rising current transformer T1, rising current transformer T2 and rising current transformer T3, in three-phase
Power circuit breaker Q is set between experiment power supply and rising current transformer T1, rising current transformer T2 and the input terminal of rising current transformer T3,
The input terminal of rising current transformer T1 also installs electronic automatic coupling voltage regulator TV1, and the output end of rising current transformer T1 connects Current Mutual Inductance
Device TA1, current transformer TA1 connect external ammeter PA1, ammeter PA1 connection current stabilizing controller QA1, current stabilizing controller
The input terminal of QA1 connection rising current transformer T1 and electronic automatic coupling voltage regulator TV1, rising current transformer T2 also install electronic self coupling tune
The output end of depressor TV2, rising current transformer T2 connect current transformer TA2, and current transformer TA2 connects external ammeter
PA2, ammeter PA2 connection current stabilizing controller QA2, current stabilizing controller QA2 connection rising current transformer T2 and electronic self-coupling
The input terminal of device TV2, rising current transformer T3 also install electronic automatic coupling voltage regulator TV3, the output end connection electricity of rising current transformer T3
Current transformer TA3, current transformer TA3 connect external ammeter PA3, ammeter PA3 connection current stabilizing controller QA3, current stabilization
Controller QA3 connection rising current transformer T3 and electronic automatic coupling voltage regulator TV3；
B. pole-mounted circuit breaker is in "on" position, and pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1, up-flow becomes
The output end of depressor T2 and rising current transformer T3, pole-mounted circuit breaker outgoing line side short circuit ground connection；
C. pole-mounted circuit breaker overcurrent protection delay definite value is set to 0s, setting overcurrent protection setting valve Isi；
D. power on circuit breaker Q, adjust electronic automatic coupling voltage regulator TV1, electronic automatic coupling voltage regulator TV2 and electronic self coupling tune
Depressor TV3, makes electric current gradually increase, until breaker actuation, records current value I at this timest；
E. repeat to test, the error of each breaker actuation electric current and setting valve should be not more than ± 10%；
F. overcurrent protection delay definite value is set to tsi, setting overcurrent protection setting valve is I 'si；
G. pole-mounted circuit breaker is in "on" position, and pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1, up-flow becomes
The output end of depressor T2 and rising current transformer T3, pole-mounted circuit breaker outgoing line side short circuit grounding；
H. pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjust electronic automatic coupling voltage regulator TV1, electricity
Dynamic automatic coupling voltage regulator TV2 and electronic automatic coupling voltage regulator TV3, makes electric current reach preset value I 'si, deenergization circuit breaker Q；
I. pole-mounted circuit breaker trip coil is connected, and by breaker closing, powers on circuit breaker Q, on measurement column
Time interval t of the breaker from application test current to breaker open operationst；
J. repeat to test, time interval of the pole-mounted circuit breaker from application test current to breaker open operation i.e. delay tst
Average value is measured compared with the delay adjustments time, error should be not more than 1% or 40ms, complete phase fault experiment.
Test number (TN) in the step 5) is 5 times, and error calculation formula is,
ε in formula0IFor error, I0iFor zero-sequenceprotection setting valve, I0tFor zero-sequenceprotection actual act value.
5 delay measurements t in the step 11)0tMean value calculation formula be
T in formula0taFor the average value of delay measurements, t0t1For the 1st delay measurements, t0t2For the 2nd Time delay measurement
Value ..., t0t5For the 5th delay measurements.
Delay time error calculation formula in the step 11) is
ε in formula0tFor delay time error, t0taFor the average value of delay measurements, t0iFor delay adjustments value.
Test number (TN) in the step e is 5 times, and error calculation formula is
ε in formulaSIFor error, IsiFor overcurrent protection setting valve, IstFor overcurrent protection actual act value.
5 delay measurements t in the step jstMean value calculation formula be
T in formulastaFor the average value of delay measurements, tst1For the 1st delay measurements, tst2For the 2nd Time delay measurement
Value ..., tst5For the 5th delay measurements.
Delay time error calculation formula in the step j is
ε in formulastFor delay time error, tstaFor the average value of delay measurements, tsiFor delay adjustments value.
The beneficial effects of the invention are as follows：The angle merged from one or two times comprehensively tries the defencive function of pole-mounted circuit breaker
It tests, under the conditions of capable of accurately simulating singlephase earth fault, phase fault, whether breaker actuation is correct, if can send out
The failure of raw malfunction or tripping, checks whether mutual inductor, buckle releaser, operating mechanism and arc-chutes dynamic/static contact can be coordinated correctly
Action.
Description of the drawings
Fig. 1 is singlephase earth fault test wiring schematic diagram of the present invention；
Fig. 2 is phase fault test connection schematic diagram of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Technical scheme of the present invention：
A kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function, including singlephase earth fault test and alternate short
Road Test to Failure,
When singlephase earth fault occurs, system will produce zero-sequence current, mutual by zero-sequence current after breaker major loop
Sensor detects, when zero-sequence current is more than the setting valve of quick-break or overcurrent, buckle releaser acts immediately, or through deferred action, by
Operating mechanism driving moving contact of breaker is separated with static contact in vacuum interrupter, breaker open operation.
The singlephase earth fault test includes the following steps, as shown in Figure 1,
1) experiment power supply connects rising current transformer T, and power supply is arranged between experiment power supply and the input terminal of rising current transformer T
The input terminal of circuit breaker Q, rising current transformer T also installs electronic automatic coupling voltage regulator TV, and the output end of rising current transformer T connects electric current
Mutual inductor TA, current transformer TA connect external ammeter PA, ammeter PA connections current stabilizing controller QA, current stabilizing controller QA
Connect rising current transformer T and electronic automatic coupling voltage regulator TV；
2) pole-mounted circuit breaker is in "on" position, selects any one phase enter line side access rising current transformer T of pole-mounted circuit breaker
Output end, pole-mounted circuit breaker outgoing line side ground connection, in addition two-phase output and input side difference short circuit；The present embodiment selection A connects
Enter the output end of rising current transformer T, B with C phases output and input side difference short circuit.
3) breaker zero-sequenceprotection delay definite value is set to 0s, setting zero-sequenceprotection setting valve is I0i, the present embodiment sets
Zero setting sequence protection seting value 400A；
4) power on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV makes electric current gradually increase, until breaker actuation,
The current value I of record at this time0t, the present embodiment record current value is 383.15A, and error is -4.21%；
5) repeat to test, the error of each breaker actuation electric current and setting valve should be not more than ± 10%.This implementation
Example repeats experiment 5 times, experimental data such as table 1.
Table 1A phase earth fault starting current test datas
| Test number (TN) | 1 | 2 | 3 | 4 | 5 |
| Starting current/A | 383.15 | 380.03 | 375.91 | 369.54 | 379.68 |
| Error/% | -4.21 | -4.99 | -6.02 | -7.62 | -5.08 |
6) step (2)~(5) are repeated in other two-phase, completes starting current experiment.The present embodiment B, C phase earth fault
Test data such as table 2, table 3.
Table 2B phase earth fault starting current test datas
| Test number (TN) | 1 | 2 | 3 | 4 | 5 |
| Starting current/A | 366.44 | 374.96 | 377.16 | 367.60 | 375.52 |
| Error/% | -8.39 | -6.26 | -5.71 | -8.10 | -6.12 |
Table 3C phase earth fault starting current test datas
| Test number (TN) | 1 | 2 | 3 | 4 | 5 |
| Starting current/A | 372.68 | 368.60 | 372.20 | 371.28 | 367.40 |
| Error/% | -6.83 | -7.85 | -6.95 | -7.18 | -8.15 |
7) zero-sequenceprotection delay definite value is set to t0i, the present embodiment is set as 1s.Zero-sequenceprotection setting valve, which is arranged, is
I’0i, the present embodiment is set as 600A；
8) pole-mounted circuit breaker is in "on" position, and any one phase enter line side of breaker is selected to access the defeated of rising current transformer T
Outlet, breaker outgoing line side are grounded, and in addition two-phase outputs and inputs side difference short circuit；The present embodiment selection A phases access up-flow and become
The output end of depressor T, B with C phases output and input side difference short circuit.
9) pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV makes electricity
Stream reaches preset value I '0i, the present embodiment makes electric current reach 600A, deenergization circuit breaker Q；
10) pole-mounted circuit breaker trip coil is connected, and pole-mounted circuit breaker is closed a floodgate, power on circuit breaker Q, measured
Time interval t of the pole-mounted circuit breaker from application test current to breaker open operation0t, the present embodiment measure time interval be
1.013s。
11) repeat to test, pole-mounted circuit breaker is delayed from the time interval for applying test current to breaker open operation
t0tMeasurement average value and delay adjustments time t0iCompare, error should be not more than 1% or 40ms.The present embodiment repeats experiment 5
It is secondary, test data such as table 4.
4 A phase earth fault Time delay measurement test datas of table
12) step (7)~(11) are repeated in other two-phase, completes Extended Time Tests.The examination of the present embodiment B, C phase earth fault
Test data such as table 5, table 6.
5 B phase earth fault Time delay measurement test datas of table
6 C phase earth fault Time delay measurement test datas of table
When phase fault occurs, detects short circuit current through breaker A, C phase current mutual inductor, work as short circuit current
When more than the setting valve of quick-break or overcurrent, buckle releaser acts immediately, or through deferred action, is touched by operating mechanism driving breaker is dynamic
Head is separated with static contact in vacuum interrupter, breaker open operation.For protection two-phase short-circuit fault and three phase short circuit fault, A, C phase
Current transformer respectively connects an independent buckle releaser, can respectively control breaker open operation.GB1984-2014 defines open circuit
If device has multiple buckle releasers, it should not interfere with each other, the buckle releaser of identical function should be physically independent, i.e., magnetic field is isolated.When
When three-phase shortcircuit occurs, since the magnetic field that A, B, C three short circuit current generate is overlapped mutually, the dynamic of electromagnetic release may be made
Work value uses three-phase shortcircuit than the single-phase working value smaller to break down to investigate the requirement whether buckle releaser meets magnetic field isolation
Method it is more more particularly suitable than line to line fault.
The phase fault, which is tested, to be included the following steps, as shown in Fig. 2,
A. three-phase test power supply is separately connected rising current transformer T1, rising current transformer T2 and rising current transformer T3, in three-phase
Power circuit breaker Q is set between experiment power supply and rising current transformer T1, rising current transformer T2 and the input terminal of rising current transformer T3,
The input terminal of rising current transformer T1 also installs electronic automatic coupling voltage regulator TV1, and the output end of rising current transformer T1 connects Current Mutual Inductance
Device TA1, current transformer TA1 connect external ammeter PA1, ammeter PA1 connection current stabilizing controller QA1, current stabilizing controller
The input terminal of QA1 connection rising current transformer T1 and electronic automatic coupling voltage regulator TV1, rising current transformer T2 also install electronic self coupling tune
The output end of depressor TV2, rising current transformer T2 connect current transformer TA2, and current transformer TA2 connects external ammeter
PA2, ammeter PA2 connection current stabilizing controller QA2, current stabilizing controller QA2 connection rising current transformer T2 and electronic self-coupling
The input terminal of device TV2, rising current transformer T3 also install electronic automatic coupling voltage regulator TV3, the output end connection electricity of rising current transformer T3
Current transformer TA3, current transformer TA3 connect external ammeter PA3, ammeter PA3 connection current stabilizing controller QA3, current stabilization
Controller QA3 connection rising current transformer T3 and electronic automatic coupling voltage regulator TV3；
B. pole-mounted circuit breaker is in "on" position, and pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1, up-flow becomes
The output end of depressor T2 and rising current transformer T3, pole-mounted circuit breaker outgoing line side short circuit ground connection；
C. pole-mounted circuit breaker overcurrent protection delay definite value is set to 0s, setting overcurrent protection setting valve Isi, the present embodiment
Overcurrent protection setting valve 400A is set；
D. power on circuit breaker Q, adjust electronic automatic coupling voltage regulator TV1, electronic automatic coupling voltage regulator TV2 and electronic self coupling tune
Depressor TV3, makes electric current gradually increase, until breaker actuation, records current value I at this timest, the present embodiment record current value is
379.13A, error are -5.22%；
E. repeat to test, the error of each breaker actuation electric current and setting valve should be not more than ± 10%.This implementation
Example repeats experiment 5 times, experimental data such as table 7.
7 phase-to phase fault starting current test data of table
| Test number (TN) | 1 | 2 | 3 | 4 | 5 |
| Starting current/A | 372.88 | 364.64 | 374.88 | 366.88 | 360.24 |
| Error/% | -6.78 | -8.84 | -6.28 | -8.28 | -9.94 |
F. overcurrent protection delay definite value is set to tsi, the present embodiment is set as 0.5s.Overcurrent protection setting valve, which is arranged, is
I’si, the present embodiment is set as 600A；
G. pole-mounted circuit breaker is in "on" position, and pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1, up-flow becomes
The output end of depressor T2 and rising current transformer T3, pole-mounted circuit breaker outgoing line side short circuit grounding；
H. pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjust electronic automatic coupling voltage regulator TV1, electricity
Dynamic automatic coupling voltage regulator TV2 and electronic automatic coupling voltage regulator TV3, makes electric current reach preset value I 'si, the present embodiment makes electric current reach
600A, deenergization circuit breaker Q；
I. pole-mounted circuit breaker trip coil is connected, and by breaker closing, powers on circuit breaker Q, on measurement column
Time interval t of the breaker from application test current to breaker open operationst, the time interval that the present embodiment measures is 0.504s.
J. repeat to test, time interval of the pole-mounted circuit breaker from application test current to breaker open operation i.e. delay tst
Average value is measured compared with the delay adjustments time, error should be not more than 1% or 40ms, complete phase fault experiment.This reality
It applies example and repeats experiment 5 times, test data such as table 8.
8 phase-to phase fault Time delay measurement test data of table
Test number (TN) in the step 5) is 5 times, and error calculation formula is,
ε in formula0IFor error, I0iFor zero-sequenceprotection setting valve, I0tFor zero-sequenceprotection actual act value.
5 delay measurements t in the step 11)0tMean value calculation formula be
T in formula0taFor the average value of delay measurements, t0t1For the 1st delay measurements, t0t2For the 2nd Time delay measurement
Value ..., t0t5For the 5th delay measurements.
Delay time error calculation formula in the step 11) is
ε in formula0tFor delay time error, t0taFor the average value of delay measurements, t0iFor delay adjustments value.
Test number (TN) in the step e is 5 times, and error calculation formula is
ε in formulaSIFor error, IsiFor overcurrent protection setting valve, IstFor overcurrent protection actual act value.
5 delay measurements t in the step jstMean value calculation formula be
T in formulastaFor the average value of delay measurements, tst1For the 1st delay measurements, tst2For the 2nd Time delay measurement
Value ..., tst5For the 5th delay measurements.
Delay time error calculation formula in the step j is
ε in formulastFor delay time error, tstaFor the average value of delay measurements, tsiFor delay adjustments value.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function, it is characterised in that：It is tried including singlephase earth fault
It tests and is tested with phase fault, the singlephase earth fault test includes the following steps,
1) experiment power supply connects rising current transformer T, and electric power disconnection is arranged between experiment power supply and the input terminal of rising current transformer T
The input terminal of device Q, rising current transformer T also install electronic automatic coupling voltage regulator TV, and the output end of rising current transformer T connects Current Mutual Inductance
Device TA, current transformer TA connect external ammeter PA, ammeter PA connection current stabilizing controller QA, current stabilizing controller QA connections
Rising current transformer T and electronic automatic coupling voltage regulator TV；
2) pole-mounted circuit breaker is in "on" position, and any one phase enter line side of pole-mounted circuit breaker is selected to access the defeated of rising current transformer T
Outlet, pole-mounted circuit breaker outgoing line side are grounded, and in addition two-phase outputs and inputs side difference short circuit；
3) breaker zero-sequenceprotection delay definite value is set to 0s, setting zero-sequenceprotection setting valve is I0i；
4) power on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV makes electric current gradually increase, until breaker actuation, record
Current value I at this time0t。
5) repeat to test, the error of each breaker actuation electric current and setting valve should be not more than ± 10%；
6) step 2)~5 are repeated in other two-phase), complete starting current experiment；
7) zero-sequenceprotection delay definite value is set to t0i, setting zero-sequenceprotection setting valve is I '0i；
8) pole-mounted circuit breaker is in "on" position, selects the output end of any one phase enter line side access rising current transformer T of breaker,
Breaker outgoing line side is grounded, and in addition two-phase outputs and inputs side difference short circuit；
9) pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV makes electric current reach
To preset value I '0i, deenergization circuit breaker Q；
10) pole-mounted circuit breaker trip coil is connected, and pole-mounted circuit breaker is closed a floodgate, power on circuit breaker Q, on measurement column
Time interval t of the breaker from application test current to breaker open operation0t；
11) repeat to test, time interval of the pole-mounted circuit breaker from application test current to breaker open operation i.e. delay t0t's
Measure average value and delay adjustments time t0iCompare, error should be not more than 1% or 40ms；
12) step 7)~11 are repeated in other two-phase), complete Extended Time Tests.
The phase fault, which is tested, to be included the following steps,
A. three-phase test power supply is separately connected rising current transformer T1, rising current transformer T2 and rising current transformer T3, in three-phase test
Power circuit breaker Q, up-flow are set between power supply and rising current transformer T1, rising current transformer T2 and the input terminal of rising current transformer T3
The input terminal of transformer T1 also installs electronic automatic coupling voltage regulator TV1, and the output end of rising current transformer T1 connects current transformer
TA1, current transformer TA1 connect external ammeter PA1, ammeter PA1 connections current stabilizing controller QA1, current stabilizing controller QA1
The input terminal of connection rising current transformer T1 and electronic automatic coupling voltage regulator TV1, rising current transformer T2 also install electronic self-coupling
The output end of device TV2, rising current transformer T2 connect current transformer TA2, and current transformer TA2 connects external ammeter PA2,
Ammeter PA2 connection current stabilizing controller QA2, current stabilizing controller QA2 connection rising current transformer T2 and electronic automatic coupling voltage regulator
The input terminal of TV2, rising current transformer T3 also install electronic automatic coupling voltage regulator TV3, and the output end of rising current transformer T3 connects electric current
Mutual inductor TA3, current transformer TA3 connect external ammeter PA3, ammeter PA3 connection current stabilizing controller QA3, current stabilization control
Device QA3 connection rising current transformer T3 processed and electronic automatic coupling voltage regulator TV3；
B. pole-mounted circuit breaker is in "on" position, and pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1, rising current transformer
The output end of T2 and rising current transformer T3, pole-mounted circuit breaker outgoing line side short circuit ground connection；
C. pole-mounted circuit breaker overcurrent protection delay definite value is set to 0s, setting overcurrent protection setting valve Isi；
D. power on circuit breaker Q, adjust electronic automatic coupling voltage regulator TV1, electronic automatic coupling voltage regulator TV2 and electronic automatic coupling voltage regulator
TV3 makes electric current gradually increase, until breaker actuation, records current value I at this timest；
E. repeat to test, the error of each breaker actuation electric current and setting valve should be not more than ± 10%；
F. overcurrent protection delay definite value is set to tsi, setting overcurrent protection setting valve is I 'si；
G. pole-mounted circuit breaker is in "on" position, and pole-mounted circuit breaker three-phase enter line side accesses rising current transformer T1, rising current transformer
The output end of T2 and rising current transformer T3, pole-mounted circuit breaker outgoing line side short circuit grounding；
H. pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjust electronic automatic coupling voltage regulator TV1, it is electronic from
Coupling pressure regulator TV2 and electronic automatic coupling voltage regulator TV3, makes electric current reach preset value I 'si, deenergization circuit breaker Q；
I. pole-mounted circuit breaker trip coil is connected, and by breaker closing, powers on circuit breaker Q, open circuit on measurement column
Time interval t of the device from application test current to breaker open operationst；
J. repeat to test, time interval of the pole-mounted circuit breaker from application test current to breaker open operation i.e. delay tstIt measures
For average value compared with the delay adjustments time, error should be not more than 1% or 40ms, complete phase fault experiment.
2. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function according to claim 1, it is characterised in that：
Test number (TN) in the step 5) is 5 times, and error calculation formula is,
ε in formula0IFor error, I0iFor zero-sequenceprotection setting valve, I0tFor zero-sequenceprotection actual act value.
3. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function according to claim 1, it is characterised in that：
5 delay measurements t in the step 11)0tMean value calculation formula be
T in formula0taFor the average value of delay measurements, t0t1For the 1st delay measurements, t0t2For the 2nd delay measurements, with
This analogizes, t0t5For the 5th delay measurements.
4. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function according to claim 1, it is characterised in that：
Delay time error calculation formula in the step 11) is
ε in formula0tFor delay time error, t0taFor the average value of delay measurements, t0iFor delay adjustments value.
5. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function according to claim 1, it is characterised in that：
Test number (TN) in the step e is 5 times, and error calculation formula is
ε in formulaSIFor error, IsiFor overcurrent protection setting valve, IstFor overcurrent protection actual act value.
6. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function according to claim 1, it is characterised in that：
5 delay measurements t in the step jstMean value calculation formula be
T in formulastaFor the average value of delay measurements, tst1For the 1st delay measurements, tst2For the 2nd delay measurements, with
This analogizes, tst5For the 5th delay measurements.
7. a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function according to claim 1, it is characterised in that：
Delay time error calculation formula in the step j is
ε in formulastFor delay time error, tstaFor the average value of delay measurements, tsiFor delay adjustments value.
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