CN108535645B - 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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- CN108535645B CN108535645B CN201810371648.8A CN201810371648A CN108535645B CN 108535645 B CN108535645 B CN 108535645B CN 201810371648 A CN201810371648 A CN 201810371648A CN 108535645 B CN108535645 B CN 108535645B
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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 ground connection, in addition two-phase outputs and inputs side and is shorted respectively, carry out singlephase earth fault test, the phase fault test 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 is shorted ground connection, carry out phase fault test, the angle that the present invention is merged from one or two times comprehensively tests the defencive function of pole-mounted circuit breaker, list can accurately be simulated Under the conditions of phase ground fault, phase fault, whether breaker actuation is correct, if the failure of malfunction or tripping can occur.
Description
Technical field
The present invention relates to pole-mounted circuit breakers to test field, melts more particularly to a kind of pole-mounted circuit breaker defencive function one or two times
Close test method.
Background technique
Pole-mounted circuit breaker is widely used in the contact, segmentation and branch line of distribution as distributed protection equipment.Not
Come in the construction of smart grid, pole-mounted circuit breaker will play more and more positive effect.Currently, the test item of pole-mounted circuit breaker
Mesh mainly includes the test to ontology such as insulation, mechanical property, temperature rise, 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.
Electricity is configured in A, C phase enter line side with the pole-mounted circuit breaker that single phase earthing protection and phase fault are protected
Current transformer, outgoing line side configure zero sequence current mutual inductor, cooperate 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.
Summary of the invention
The present invention provides a kind of one or two test for fusion methods of pole-mounted circuit breaker defencive function, carries out comprehensively to defencive function
Test.
Technical solution 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 test and phase fault are tested, and the singlephase earth fault test includes 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
Circuit breaker Q, the input terminal of rising current transformer T also install 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 connection 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, and any one phase enter line side of pole-mounted circuit breaker is selected to access rising current transformer T
Output end, pole-mounted circuit breaker outgoing line side ground connection, in addition two-phase outputs and inputs side and is shorted respectively；
3) 0s is set by breaker zero-sequenceprotection delay definite value, setting zero-sequenceprotection setting valve is I0i；
4) power on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV is gradually increased electric current, 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 test；
7) t is set by zero-sequenceprotection delay definite value0i, 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 flank ground, and in addition two-phase outputs and inputs side and is shorted respectively；
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, disconnect power 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 setting 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
QA1 connection rising current transformer T1 and electronic automatic coupling voltage regulator TV1, the input terminal of 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
Device TV2, the input terminal of rising current transformer T3 also install electronic automatic coupling voltage regulator TV3, and the output end of rising current transformer T3 connects electricity
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 are shorted ground connection；
C. 0s is set by pole-mounted circuit breaker overcurrent protection delay definite value, overcurrent protection setting valve I is setsi；
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, is gradually increased electric current, 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. t is set by overcurrent protection delay definite valuesi, 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, disconnect power 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 setting time that is delayed, error should be not more than 1% or 40ms, complete phase fault test.
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 t in the step 11)0tMeasurement mean value calculation formula be
T in formula0taFor the t that is delayed0tMeasurement average value, 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 t that is delayed0tMeasurement average value, t0iFor the setting value that is delayed.
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 t in the step jstMeasuring mean value calculation formula is
T in formulastaFor the t that is delayedstMeasure average value, 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 t that is delayedstMeasure average value, tsiFor the setting value that is delayed.
The beneficial effects of the present invention are: the angle merged from one or two times tries the defencive function of pole-mounted circuit breaker comprehensively
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
Movement.
Detailed description of the invention
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 embodiment
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 description, 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 solution 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 can generate 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
Circuit breaker Q, the input terminal of rising current transformer T also install 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 connection 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, and any one phase enter line side of pole-mounted circuit breaker is selected to access rising current transformer T
Output end, pole-mounted circuit breaker outgoing line side ground connection, in addition two-phase outputs and inputs side and is shorted respectively；The present embodiment selection A connects
Enter the output end of rising current transformer T, B with C phase outputs and inputs side and is shorted respectively.
3) 0s is set by breaker zero-sequenceprotection delay definite value, 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 is gradually increased electric current, 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 test 5 times, experimental data such as table 1.
1 A phase ground fault starting current test data of table
| 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 test.The present embodiment B, C phase ground fault
Test data such as table 2, table 3.
Table 2B phase ground fault starting current test data
| 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 ground fault starting current test data
| 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) t is set by zero-sequenceprotection delay definite value0i, 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 flank ground, and in addition two-phase outputs and inputs side and is shorted respectively；The present embodiment selection A phase accesses up-flow and becomes
The output end of depressor T, B with C phase output and input side and are shorted respectively.
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, disconnects power 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 measurement 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 setting time t0iCompare, error should be not more than 1% or 40ms.The present embodiment repeats test 5
It is secondary, test data such as table 4.
4 A phase ground fault Time delay measurement test data 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 ground fault
Test data such as table 5, table 6.
5 B phase ground fault Time delay measurement test data of table
6 C phase ground fault Time delay measurement test data of table
When phase fault occurs, short circuit current is detected through breaker A, C phase current mutual inductor, works as short circuit current
When more than the setting valve of quick-break or overcurrent, buckle releaser acts immediately, or through deferred action, by the dynamic touching of operating mechanism driving breaker
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 is smaller than the single-phase action value to break down, to investigate the requirement whether buckle releaser meets magnetic field isolation, uses three-phase shortcircuit
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
QA1 connection rising current transformer T1 and electronic automatic coupling voltage regulator TV1, the input terminal of 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
Device TV2, the input terminal of rising current transformer T3 also install electronic automatic coupling voltage regulator TV3, and the output end of rising current transformer T3 connects electricity
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 are shorted ground connection；
C. 0s is set by pole-mounted circuit breaker overcurrent protection delay definite value, overcurrent protection setting valve I is setsi, 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, is gradually increased electric current, 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 test 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. t is set by overcurrent protection delay definite valuesi, 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 reaches electric current
600A disconnects power 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 of the present embodiment measurement 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 setting time that is delayed, error should be not more than 1% or 40ms, complete phase fault test.This reality
It applies example and repeats test 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 t in the step 11)0tMeasurement mean value calculation formula be
T in formula0taFor the t that is delayed0tMeasurement average value, 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 t that is delayed0tMeasurement average value, t0iFor the setting value that is delayed.
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 t in the step jstMeasuring mean value calculation formula is
T in formulastaFor the t that is delayedstMeasure average value, 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 t that is delayedstMeasure average value, tsiFor the setting value that is delayed.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
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: 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
Device Q, the input terminal of 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 connection
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 ground connection, in addition two-phase outputs and inputs side and is shorted respectively；
3) 0s is set by breaker zero-sequenceprotection delay definite value, setting zero-sequenceprotection setting valve is I0i；
4) power on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV is gradually increased electric current, 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 test；
7) t is set by zero-sequenceprotection delay definite value0i, 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 flanks ground, and in addition two-phase outputs and inputs side and is shorted respectively；
9) pole-mounted circuit breaker trip coil is disconnected, powers on circuit breaker Q, adjusting electronic automatic coupling voltage regulator TV reaches electric current
To preset value I '0i, disconnect power 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 setting 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 connection current stabilizing controller QA1, current stabilizing controller QA1
Connection rising current transformer T1 and electronic automatic coupling voltage regulator TV1, the input terminal of 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
TV2, the input terminal of 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 are shorted ground connection；
C. 0s is set by pole-mounted circuit breaker overcurrent protection delay definite value, overcurrent protection setting valve I is setsi；
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 is gradually increased electric current, 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. t is set by overcurrent protection delay definite valuesi, 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, disconnect power 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 tstMeasurement
For average value compared with the setting time that is delayed, error should be not more than 1% or 40ms, complete phase fault test.
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 t in the step 11)0tMeasurement mean value calculation formula be
T in formula0taFor the t that is delayed0tMeasurement average value, 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 t that is delayed0tMeasurement average value, t0iFor the setting value that is delayed.
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 t in the step jstMeasuring mean value calculation formula is
T in formulastaFor the t that is delayedstMeasure average value, tst1For the 1st delay measurements, tst2For the 2nd delay measurements, with this
Analogize, 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 t that is delayedstMeasure average value, tsiFor the setting value that is delayed.
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| CN109103841B (en) * | 2018-10-30 | 2019-08-30 | 攀钢集团西昌钢钒有限公司 | A kind of electric system of supply transformer |
| CN110133489B (en) * | 2019-04-26 | 2021-01-08 | 国网湖北省电力有限公司电力科学研究院 | Simulated fault applying method and system for single-phase earth fault of primary-secondary fusion complete set of pole circuit breaker |
| US11402457B2 (en) * | 2019-06-10 | 2022-08-02 | Zhejiang Huadian Equipment Testing Institute Co., Ltd. | System and method for integrated test on primary-secondary pole-mounted breaker |
| CN110780221A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
| CN110794300A (en) * | 2019-11-19 | 2020-02-14 | 国网湖北省电力有限公司电力科学研究院 | Three-phase full-voltage test power supply of breaker on primary and secondary fusion complete set of column |
| CN110780255A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | Secondary electrical measurement system for circuit breaker on primary and secondary fusion complete set of column |
| CN110780256A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | System and method for detecting accuracy of circuit breaker on primary and secondary fusion complete set of columns |
| CN112098832A (en) * | 2020-09-18 | 2020-12-18 | 国网上海市电力公司 | Device for detecting tripping characteristic of pole-mounted circuit breaker |
| CN112379252B (en) * | 2020-11-03 | 2021-07-06 | 南方电网数字电网研究院有限公司 | Primary and secondary fusion pole switch test system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015037223A1 (en) * | 2013-09-13 | 2015-03-19 | 株式会社 東芝 | Device for testing dc circuit breaker and testing method therefor |
| CN106469601A (en) * | 2016-09-28 | 2017-03-01 | 江苏靖江互感器股份有限公司 | A kind of controller switching equipment is with one or two fusion threephase potential transformers |
| US9753088B2 (en) * | 2014-11-03 | 2017-09-05 | Eaton Corporation | Portable diagnostic apparatus for testing circuit breakers |
| CN107276042A (en) * | 2017-08-02 | 2017-10-20 | 国家电网公司 | Shutting-brake control method based on one or two fusion no-flashy-flow Intelligent power distribution switchs |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016046047A1 (en) * | 2014-09-22 | 2016-03-31 | Alstom Technology Ltd | Synthetic test circuit |
| CN107681779A (en) * | 2017-09-06 | 2018-02-09 | 河南省三禾电气有限公司 | One or two fusion high-pressure vacuum breakers and its monitoring method, system |
| CN107947134B (en) * | 2017-12-05 | 2020-06-05 | 国电南瑞科技股份有限公司 | On-site coincident single-phase earth fault positioning isolation and recovery method |
-
2018
- 2018-04-24 CN CN201810371648.8A patent/CN108535645B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015037223A1 (en) * | 2013-09-13 | 2015-03-19 | 株式会社 東芝 | Device for testing dc circuit breaker and testing method therefor |
| US9753088B2 (en) * | 2014-11-03 | 2017-09-05 | Eaton Corporation | Portable diagnostic apparatus for testing circuit breakers |
| CN106469601A (en) * | 2016-09-28 | 2017-03-01 | 江苏靖江互感器股份有限公司 | A kind of controller switching equipment is with one or two fusion threephase potential transformers |
| CN107276042A (en) * | 2017-08-02 | 2017-10-20 | 国家电网公司 | Shutting-brake control method based on one or two fusion no-flashy-flow Intelligent power distribution switchs |
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