CN105974306B - A kind of dc circuit breaker oscillating characteristic intelligent test device, system and test method - Google Patents
A kind of dc circuit breaker oscillating characteristic intelligent test device, system and test method Download PDFInfo
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- CN105974306B CN105974306B CN201610500586.7A CN201610500586A CN105974306B CN 105974306 B CN105974306 B CN 105974306B CN 201610500586 A CN201610500586 A CN 201610500586A CN 105974306 B CN105974306 B CN 105974306B
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- 238000012360 testing method Methods 0.000 title claims abstract description 59
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 21
- 230000010355 oscillation Effects 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 14
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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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
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of dc circuit breaker oscillating characteristic intelligent test device, system and test methods, test device includes direct current adjustable stabilized voltage supply, current detecting unit, data acquisition and processing unit, DC power supply are spaced apart K1 and voltage tester is spaced apart K2, the output end concatenation DC power supply of direct current adjustable stabilized voltage supply is spaced apart after K1 as power output end, the voltage tester is spaced apart the one end K2 and is connected with power output end parallel connection, the other end with data acquisition and processing unit, and the output end of current detecting unit is acquired with data and processing unit is connected；Test macro includes test device and and dc circuit breaker；Test method includes analyzing and exporting further according to voltage or electric current completion oscillating characteristic after charging to the capacitor of dc circuit breaker, realizes the automatic reading and the automatic calculating of result of data.Detection sensitivity of the present invention is high, can in real time recording detection data, realize to the automatic detection of data, implementation cost is low, mitigates on-site test workload, detection efficiency is high, is capable of providing Through Several Survey Measure for user's selection.
Description
Technical field
The present invention relates to electric power project engineering fields, and in particular to a kind of dc circuit breaker oscillating characteristic intelligent testing trial assembly
It sets, system and test method.
Background technique
Important equipment of the dc circuit breaker as converter station conversion DC current, the ability of conversion DC current is to consider
One highly important factor of dc circuit breaker performance.Since DC current is without zero crossing, dc circuit breaker is being converted
It is needed when DC current by DC current " artificial zero passage ", the principle of dc circuit breaker conversion DC current is disconnected in regular alternating current
Road device parallel connection LC oscillation circuit, LC oscillation circuit generation oscillating current is applied to breaker both ends and compels during breaker division
Make breaker fracture both ends current over-zero, to achieve the purpose that disjunction.Currently, once there is direct current in domestic more converter stations
Flow the case of convert failed, the oscillating characteristic of the dc circuit breaker also gradually weight by State Grid Corporation of China and Southern Power Grid Company
Depending on.
At present in dc circuit breaker commissioning test, frequently with the oscillation of DC power supply and oscilloscope measurement dc circuit breaker
Characteristic there is no set of instrument and equipment, and oscillograph is typically expensive, not readily portable and Data Management Analysis, and can not
Record detection waveform in real time, therefore need to design a kind of set of portable device, it is applied to on-site test.
Summary of the invention
The technical problem to be solved in the present invention: in view of the above problems in the prior art, provide that a kind of detection sensitivity is high, energy
Enough real-time recording detection datas, realize to the automatic detection of data, implementation cost is low, mitigates on-site test workload, detection is imitated
Rate is high, is capable of providing dc circuit breaker oscillating characteristic intelligent test device, system and survey that Through Several Survey Measure is selected for user
Method for testing.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
The present invention provides a kind of dc circuit breaker oscillating characteristic intelligent test device, including direct current adjustable stabilized voltage supply, electricity
It flows detection unit, data acquisition and processing unit, DC power supply are spaced apart K1 and voltage tester is spaced apart K2, the adjustable pressure stabilizing of direct current
The output end concatenation DC power supply of power supply is spaced apart after K1 as power output end, and the voltage tester is spaced apart the one end K2 and power supply is defeated
Outlet is in parallel, the other end is acquired with data and the voltage detecting input terminal of processing unit is connected, the current detecting unit it is defeated
Outlet is acquired with data and the current sense input of processing unit is connected.
Preferably, the current detecting unit includes Rogowski coil and DC current transformer, the Rogowski coil and straight
The output end of galvanic electricity current transformer is connected with the current sense input of data acquisition and processing unit respectively.
The present invention also provides a kind of dc circuit breaker oscillating characteristic intelligent test systems, including dc circuit breaker oscillating characteristic
Intelligent test device and tested dc circuit breaker, the dc circuit breaker oscillating characteristic intelligent test device are above-mentioned straight
Breaker oscillating characteristic intelligent test device is flowed, the dc circuit breaker includes the arrester branch being connected in parallel, breaker branch
Road and oscillation branch, the arrester branch road are serially connected with arrester, and the breaker branch road is serially connected with breaker, the vibration
Swing branch road and be serially connected with inductance L and capacitor C, the power output end of the dc circuit breaker oscillating characteristic intelligent test device and
The both ends capacitor C of oscillation branch road are connected in parallel, and the current detecting unit is arranged in breaker branch road.
The present invention also provides a kind of test method of aforementioned dc circuit breaker oscillating characteristic intelligent test system, step packets
It includes:
1) breaker in tested dc circuit breaker is disconnected, by dc circuit breaker oscillating characteristic intelligent test device
Power output end be connected in tested dc circuit breaker vibrate branch road capacitor C, close DC power supply be spaced apart K1 to
Capacitor C charging disconnects DC power supply and is spaced apart K1 after charging complete, sealing voltage test is spaced apart K2, closes tested direct current
Breaker in breaker, so that breaker branch and oscillation branch form oscillation circuit in tested dc circuit breaker；
2) sealing voltage test is spaced apart K2, closes the breaker in tested dc circuit breaker, the both ends sensing capacitor C
Voltage, acquire the both ends capacitor C voltage, tested direct current interruption is calculated according to the voltage curve at the both ends capacitor C
The oscillating characteristic parameter of the oscillation circuit of device；Or it is returned by the oscillation of the tested dc circuit breaker of current detecting unit acquisition
The electric current on road calculates the oscillating characteristic ginseng of the oscillation circuit of tested dc circuit breaker according to the current curve of oscillation circuit
Number.
Preferably, the oscillating characteristic parameter include in vibration frequency, time constant, loop inductance and damping resistance extremely
Few one kind.
Dc circuit breaker oscillating characteristic intelligent test device of the present invention and system have an advantage that
1, the present invention includes direct current adjustable stabilized voltage supply, current detecting unit, data acquisition and processing unit, DC power supply
It is spaced apart K1 and voltage tester is spaced apart K2, the output end concatenation DC power supply of direct current adjustable stabilized voltage supply is used as power supply defeated after being spaced apart K1
Outlet, voltage tester are spaced apart the voltage detecting of the one end K2 and power output end parallel connection, the other end and data acquisition and processing unit
Input terminal is connected, and the output end of the current detecting unit is acquired with data and the current sense input of processing unit is connected,
Therefore the expensive oscillograph used now can be replaced, can the automatic read test data in scene, avoid manually reading data and make
At error, it is automatic to export dc circuit breaker oscillating characteristic test result, on-site test can be conveniently used in, detected sensitive
Degree is high, can real-time recording detection data, realize the real-time display output of data, reduce cost, mitigate on-site test workload,
Have the advantages that accuracy of measurement height, good portability, testing efficiency are high.
2, the present invention includes that direct current adjustable stabilized voltage supply, current detecting unit, data acquisition and processing unit, direct current are adjustable
The output end concatenation DC power supply of regulated power supply is spaced apart after K1 as power output end, can according to need selection according to voltage or
Dc circuit breaker oscillating characteristic test result is tested and exported to electric current to amplify completion dc circuit breaker oscillating characteristic, flexibly side
Just, and different dc circuit breaker oscillating characteristic test methods may be implemented to be mutually authenticated, and facilitate on-site test, realize detection
Comparative result and self-test.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of test macro of the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, the dc circuit breaker oscillating characteristic intelligent test device of the present embodiment includes direct current adjustable stabilized voltage supply
1, current detecting unit 2, data acquisition and processing unit 3, DC power supply are spaced apart K1 and voltage tester is spaced apart K2, it is steady that direct current is adjustable
The output end concatenation DC power supply of voltage source 1 is spaced apart after K1 as power output end, and voltage tester is spaced apart the one end K2 and power supply is defeated
Outlet is in parallel, the other end is acquired with data and the voltage detecting input terminal of processing unit 3 is connected, the output of current detecting unit 2
It holds and is connected with the current sense input of data acquisition and processing unit 3.
Referring to Fig. 1, the current detecting unit 2 of the present embodiment includes Rogowski coil 21 and DC current transformer 22, Roche
The output end of coil 21 and DC current transformer 22 acquires respectively with data and the current sense input phase of processing unit 3
Even.
As shown in Figure 1, the dc circuit breaker oscillating characteristic intelligent test system of the present embodiment includes dc circuit breaker oscillation
Characteristic intelligent test device and tested dc circuit breaker 4, dc circuit breaker oscillating characteristic intelligent test device are wanted for right
1 or 2 dc circuit breaker oscillating characteristic intelligent test device is sought, dc circuit breaker 4 includes the arrester branch being connected in parallel, breaks
Road device branch and oscillation branch, arrester branch road are serially connected with arrester 41, and breaker branch road is serially connected with breaker 42, vibrates
Branch road is serially connected with inductance L and capacitor C, the power output end and oscillation branch of dc circuit breaker oscillating characteristic intelligent test device
The both ends capacitor C of road are connected in parallel, and current detecting unit 2 is arranged in breaker branch road.
The step of test method of the present embodiment dc circuit breaker oscillating characteristic intelligent test system includes:
1) breaker 42 in tested dc circuit breaker 4 is disconnected, by dc circuit breaker oscillating characteristic intelligent testing trial assembly
The power output end set is connected to the capacitor C that branch road is vibrated in tested dc circuit breaker 4, closes DC power supply and is spaced apart
K1 charges to capacitor C, and DC power supply is disconnected after charging complete and is spaced apart K1, sealing voltage test is spaced apart K2, closes tested
Breaker 42 in dc circuit breaker 4, so that breaker branch and oscillation branch form oscillation in tested dc circuit breaker 4
Circuit；
2) sealing voltage test is spaced apart K2, closes the breaker 42 in tested dc circuit breaker 4, sensing capacitor C
The voltage at both ends acquires the voltage at the both ends capacitor C, calculates tested direct current according to the voltage curve at the both ends capacitor C
The oscillating characteristic parameter of the oscillation circuit of breaker 4；Or the dc circuit breaker 4 tested by the acquisition of current detecting unit 2
The electric current of oscillation circuit calculates the vibration of the oscillation circuit of tested dc circuit breaker 4 according to the current curve of oscillation circuit
Swing characterisitic parameter.
In the present embodiment, since current detecting unit 2 includes Rogowski coil 21 and DC current transformer 22, step
2) when in by the electric current of tested 4 oscillation circuit of dc circuit breaker of the acquisition of current detecting unit 2, it can both use and directly adopt
Rogowski coil 21 is mounted on test item return wire by colleeting comb method of testing, tests the curent change of oscillation circuit；It can also be with
Using indirect acquisition current method, DC current transformer signal 22 is connected to DC current transformer secondary terminals, test oscillation
The curent change situation in circuit.Therefore, the test macro in the present embodiment provides 3 kinds of test methods, and when detection may be selected 3 kinds
One of or it is a variety of, can voluntarily be selected according to on-site actual situations, three kinds of methods can also be used while detecting, compare three kinds of sides
Method detection data, is mutually authenticated, and facilitates on-site test, realizes testing result comparison and self-test.In the present embodiment, oscillating characteristic ginseng
Number includes at least one of vibration frequency, time constant, loop inductance and damping resistance.It should be noted that vibration frequency,
Time constant, loop inductance and damping resistance are the conventional parameter of oscillating characteristic, therefore its specific calculation method is in this implementation
Not reinflated explanation in example.In the present embodiment, data acquisition and processing unit 3 include A/D data acquisition module interconnected
And microprocessor, it furthermore also can according to need using the computer of external A/D data collecting card and realize.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of dc circuit breaker oscillating characteristic intelligent test system, it is characterised in that: including dc circuit breaker oscillating characteristic intelligence
Energy test device and tested dc circuit breaker (4), the dc circuit breaker oscillating characteristic intelligent test device includes direct current
Adjustable stabilized voltage supply (1), current detecting unit (2), data acquisition and processing unit (3), DC power supply are spaced apart K1 and voltage is surveyed
Examination is spaced apart K2, and the output end concatenation DC power supply of the direct current adjustable stabilized voltage supply (1) is spaced apart after K1 as power output end, institute
State the voltage detecting that voltage tester is spaced apart the one end K2 and power output end parallel connection, the other end and data acquisition and processing unit (3)
Input terminal is connected, output end and the data acquisition of the current detecting unit (2) and the current sense input of processing unit (3)
It is connected；The current detecting unit (2) includes Rogowski coil (21) and DC current transformer (22), the Rogowski coil (21)
It is connected respectively with the current sense input of data acquisition and processing unit (3) with the output end of DC current transformer (22),
The data acquisition and processing unit (3) include A/D data acquisition module and microprocessor interconnected, the direct current interruption
Device (4) includes the arrester branch being connected in parallel, breaker branch and oscillation branch, and the arrester branch road is serially connected with lightning-arrest
Device (41), the breaker branch road are serially connected with breaker (42), and the oscillation branch road is serially connected with inductance L and capacitor C, institute
The capacitor C both ends parallel connection for stating the power output end and oscillation branch road of dc circuit breaker oscillating characteristic intelligent test device connects
It connects, the current detecting unit (2) is arranged in breaker branch road, and the microprocessor is bent according to the voltage at the both ends capacitor C
Line computation goes out the oscillating characteristic parameter of the oscillation circuit of tested dc circuit breaker (4) or passes through current detecting unit (2)
The electric current of tested dc circuit breaker (4) oscillation circuit of acquisition, calculates tested according to the current curve of oscillation circuit
The oscillating characteristic parameter of the oscillation circuit of dc circuit breaker (4).
2. the test method of dc circuit breaker oscillating characteristic intelligent test system described in a kind of claim 1, it is characterised in that step
Suddenly include:
1) breaker (42) in tested dc circuit breaker (4) is disconnected, by dc circuit breaker oscillating characteristic intelligent testing trial assembly
The power output end set is connected to the capacitor C of oscillation branch road in tested dc circuit breaker (4), closes DC power supply sky
It opens K1 to charge to capacitor C, DC power supply is disconnected after charging complete and is spaced apart K1, sealing voltage test is spaced apart K2, closes tested
Dc circuit breaker (4) in breaker (42) so that breaker branch and oscillation branch in tested dc circuit breaker (4)
Form oscillation circuit；
2) sealing voltage test is spaced apart K2, closes the breaker (42) in tested dc circuit breaker (4), sensing capacitor C
The voltage at both ends acquires the voltage at the both ends capacitor C, calculates tested direct current according to the voltage curve at the both ends capacitor C
The oscillating characteristic parameter of the oscillation circuit of breaker (4)；Or the direct current interruption tested by current detecting unit (2) acquisition
The electric current of device (4) oscillation circuit is returned according to the oscillation that the current curve of oscillation circuit calculates tested dc circuit breaker (4)
The oscillating characteristic parameter on road.
3. the test method of dc circuit breaker oscillating characteristic intelligent test system according to claim 2, it is characterised in that: institute
Stating oscillating characteristic parameter includes at least one of vibration frequency, time constant, loop inductance and damping resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610500586.7A CN105974306B (en) | 2016-06-30 | 2016-06-30 | A kind of dc circuit breaker oscillating characteristic intelligent test device, system and test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610500586.7A CN105974306B (en) | 2016-06-30 | 2016-06-30 | A kind of dc circuit breaker oscillating characteristic intelligent test device, system and test method |
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| CN105974306B true CN105974306B (en) | 2019-06-25 |
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| CN107219427B (en) * | 2017-06-27 | 2023-08-04 | 天津市滨海新区军民融合创新研究院 | Power supply circuit and electromagnetic compatibility test system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221826A1 (en) * | 2002-05-10 | 2003-11-20 | Ernst Slamecka | Synthetic test circuit for a high voltage alternating current power switch has test and auxiliary switches, with the auxiliary switch activated to minimize arcing during switching by preventing its use at peak current values |
| CN202041572U (en) * | 2011-03-17 | 2011-11-16 | 湖北省电力公司电力试验研究院 | Off-line detector for current of high-voltage direct current switch oscillation loop |
| CN102901925A (en) * | 2012-10-16 | 2013-01-30 | 四川电力科学研究院 | Method for testing characteristic parameter of conversion loop of direct current circuit breaker with extra and ultra-high voltage |
| CN205861857U (en) * | 2016-06-30 | 2017-01-04 | 国家电网公司 | A kind of dc circuit breaker oscillating characteristic intelligent test device and system |
-
2016
- 2016-06-30 CN CN201610500586.7A patent/CN105974306B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221826A1 (en) * | 2002-05-10 | 2003-11-20 | Ernst Slamecka | Synthetic test circuit for a high voltage alternating current power switch has test and auxiliary switches, with the auxiliary switch activated to minimize arcing during switching by preventing its use at peak current values |
| CN202041572U (en) * | 2011-03-17 | 2011-11-16 | 湖北省电力公司电力试验研究院 | Off-line detector for current of high-voltage direct current switch oscillation loop |
| CN102901925A (en) * | 2012-10-16 | 2013-01-30 | 四川电力科学研究院 | Method for testing characteristic parameter of conversion loop of direct current circuit breaker with extra and ultra-high voltage |
| CN205861857U (en) * | 2016-06-30 | 2017-01-04 | 国家电网公司 | A kind of dc circuit breaker oscillating characteristic intelligent test device and system |
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