CN207037027U - High voltage circuit breaker closing resistance multifunctional integrated tester - Google Patents
High voltage circuit breaker closing resistance multifunctional integrated tester Download PDFInfo
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- CN207037027U CN207037027U CN201720303332.6U CN201720303332U CN207037027U CN 207037027 U CN207037027 U CN 207037027U CN 201720303332 U CN201720303332 U CN 201720303332U CN 207037027 U CN207037027 U CN 207037027U
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- breaker closing
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- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000004146 energy storage Methods 0.000 claims abstract description 12
- 238000007600 charging Methods 0.000 claims abstract description 6
- 238000010277 constant-current charging Methods 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
It the utility model is related to power equipment technical field of measurement and test, specific open high voltage circuit breaker closing resistance multifunctional integrated tester, including a test major loop, the test major loop includes super capacitor energy-storage module, the constant-current charging power for the charging of super capacitor energy-storage module, the super capacitor energy-storage module one terminates two branched lines, the other end is grounded, and a branch line includes the current-limiting resistance and sampling resistor being connected in series, and another branch line includes IGCT, the current divider being connected in series；It is connected after two branch line bouts with breaker closing resistance, the switching-on resistance other end is connected with super-capacitor module；The switching-on resistance is connected with main switch, in parallel with auxiliary switch and small-sized electric capacity；Voltage signal is sent into dsp controller after signal conditioning circuit is handled.The utility model has the advantages that by the use of super capacitor as main power source, using high-speed dsp as controller and data acquisition equipment, it is possible to achieve complete switching-on resistance, loop resistance and the quick and precisely measurement of the pre-inserted angle of incidence during a breaker closing.
Description
Technical field
Power equipment technical field of measurement and test is the utility model is related to, it is multi-functional comprehensive to particularly relate to high voltage circuit breaker closing resistance
Close tester.
Background technology
Primary cut-out is the Themaincontroller in high-voltage fence, is responsible for being switched off and on circuit and various electrical equipment are set
It is standby.When system jam, can rapid disengagement failure, fault spread is prevented, so the fine or not direct shadow of primary cut-out
Ring the safe operation to system.
The access of breaker closing resistance can effectively suppress switching overvoltage, avoid insulating caused by switching overvoltage
Destroy.Two technical data are predominantly detected to switching-on resistance：First, switching-on resistance resistance.Because overcurrent when closing a floodgate flows through,
Breaker closing resistance can be caused to change, so the preventive trial requirement of primary cut-out is annual to carry out switching-on resistance inspection
Survey, could continue to come into operation in the case where its change in resistance is no more than 5%；Second, the pre-inserted angle of incidence.The pre-inserted angle of incidence one
As be 7~10ms, be an important indicator for judging breaker mechanism performance, if great change occurs for the pre-inserted angle of incidence, instead
Reflect breaker operation mechanism and failure be present.
The change of primary cut-out loop resistance directly influences the reliability of breaker division and the security of breaker,
General factory-said value is below 100 μ Ω.When loop resistance increases, can seriously it be generated heat at contact, or even cause contact melting welding.
Short circuit current by when can also influence the dynamic of switch, heat endurance and break performance.In the past to the switching-on resistance of primary cut-out
Different instruments will be respectively adopted in test with loop resistance, and time-consuming for test, and efficiency is low, and cost is high.Switching-on resistance it is special
Tester is less, and the breaker closing method for testing resistance of particular type is very cumbersome, can only be carried out in overhaul, and pre-inserted
The angle of incidence and the measurement of loop resistance need to use special mechanic character tester and circuit resistance tester in addition.
Utility model content
The purpose of this utility model is to provide high voltage circuit breaker closing resistance multifunctional integrated tester, utilizes super capacitor
Device is as main power source, using high-speed dsp as controller and data acquisition equipment, it is possible to achieve in a breaker closing process
It is middle to complete switching-on resistance, loop resistance and the quick and precisely measurement of the pre-inserted angle of incidence.
To achieve these goals, the utility model employs following technical scheme：High voltage circuit breaker closing resistance is more
Function synthesized tester, including a test major loop, the test major loop include super capacitor energy-storage module, are super capacitor
The constant-current charging power of energy-storage module charging, the super capacitor energy-storage module one terminate two branched lines, and the other end is grounded,
A wherein branch line includes the current-limiting resistance and sampling resistor that are connected in series, IGCT that another branch line includes being connected in series,
Current divider；
It is connected after two branch line bouts with breaker closing resistance, the switching-on resistance other end is connected with super-capacitor module；
The switching-on resistance is connected with a main switch S1, in parallel with an auxiliary switch S2 and small-sized electric capacity.
Wherein, super-capacitor voltage signal, switching-on resistance voltage U2 signals and the sampling measured by the test major loop
Resistive voltage U1 signals are sent into dsp controller after signal conditioning circuit is handled, and show numerical value after the processing of DSP controllers
Show with LCDs；
The current divider voltage U3 signals are first obtained by high precision electro pressure sensor V121U07, are sent into DSP.
Wherein, the signal conditioning circuit includes forming by the LM324 differential amplifier circuits formed and by two panels AD526
Pga circuit.
Wherein, the dsp controller is 32 fixed DSP TMS320F2812, built-in 16 passage, 12 high-speed ADs, 2
Sampling hold circuit.
The beneficial effects of the utility model are：The instrument is used as control using ultracapacitor as test power supply, using DSP
Device and data acquisition equipment processed, using AD526 as small signal amplifier, realize in making process of primary cut-out
To being measured while the switching-on resistance of breaker, loop resistance and the pre-inserted angle of incidence.
The accuracy of instrument is high, and good reliability is easy to use, shortens the primary cut-out field test time, improves survey
Try efficiency.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment technical scheme, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only the utility model in order to more clearly
Illustrate the utility model embodiment or technical scheme of the prior art, below will be to needed for embodiment or description of the prior art
The accompanying drawing to be used is briefly described, and for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is test major loop schematic diagram of the present utility model；
Fig. 2 is tester hardware architecture diagram of the present utility model；
Fig. 3 is signal conditioning circuit diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
High voltage circuit breaker closing resistance multifunctional integrated tester as shown in Fig. 1~2, including a test major loop, institute
Stating test major loop includes super capacitor energy-storage module, the constant-current charging power for the charging of super capacitor energy-storage module, described super
Level capacitance energy storage module one terminates two branched lines, other end ground connection, wherein a branch line includes the current limliting electricity being connected in series
Resistance and sampling resistor, another branch line include IGCT, the current divider being connected in series；
It is connected after two branch line bouts with breaker closing resistance, the switching-on resistance other end is connected with super-capacitor module；
The switching-on resistance is connected with a main switch S1, in parallel with an auxiliary switch S2 and small-sized electric capacity.
Super-capacitor voltage signal, switching-on resistance voltage U2 signals and sampling resistor electricity measured by the test major loop
Press U1 signals to be sent into dsp controller after signal conditioning circuit is handled, show numerical value and liquid after dsp controller is handled
On crystal display screen；The current divider voltage U3 signals are first obtained by high precision electro pressure sensor V121U07, are sent into DSP.
Test philosophy：
Super capacitor has that charging rate is fast, and service life cycle is long, large current discharging capability is strong, energy conversion efficiency
The features such as high, power density height, charge and discharge electric line are simple, and long-term use is non-maintaining, is very suitable for as breaker field test
Power supply.Because the resistance of breaker closing resistance is typically in the range of 100~1000 Ω, typically dc source is used.It is disconnected
The resistance of road device loop resistance typically arrives hundreds of μ Ω tens, accurately to measure its resistance, it is necessary to pass to high current with produce compared with
Big pressure drop.For super capacitor because capacitance is big, internal resistance is small, and when measuring switching-on resistance, ultracapacitor is equivalent to DC voltage
Source；When measuring breaker loop resistor, equivalent to heavy-current discharge power supply.Therefore, using Large Copacity ultracapacitor as survey
Examination power supply meets the different requirements of different measure the items, avoids cumbersome more Power Management Designs.
High voltage circuit breaker closing resistance multifunctional integrated tester major loop is as shown in figure 1, each component parameters are as follows：It is super
Capacitance 17F, internal resistance 50m Ω, rated voltage 45V, the Ω of current-limiting resistance 1000, sampling resistor are 60 Ω, 0.5 grade of precision,
Current divider parameter 75mV/400A, 0.5 grade of precision, IGCT on-state voltage drop are 0.8V, and charge power supply is constant-current charging power.Close
Lock resistance is 200~800 Ω, and major loop resistance is 20~600 μ Ω, and small-sized electric capacity in parallel is 1000pF.In order to eliminate p-wire
Resistance Influence is pressed from both sides, pressure-wire is clipped on the inside of electric current line.
Electric capacity is charged into given voltage (30V), into after test mode, main switch S1 is closed, switching-on resistance input, breaks
Road device both end voltage U2 drops to certain value by capacitance voltage, now gathers sampling resistor both end voltage U1, then can be according to sampling
It is 60U2/U1 that switching-on resistance value, which is calculated, in resistance value.After auxiliary switch S2 is closed, breaker major loop is closed, and U2 is down to
Close to 0, at this moment DSP controls turn on thyristors, due to loop resistance very little, the high current for there are peak value peaces up to a hundred is flowed through into breaker
Major loop, voltage U3 on U2 and current divider is measured, it is 187.5U2/U3 that can obtain loop resistance value according to the resistance of current divider.
The time difference that U2 voltage drops twice are recorded using DSP General timer is the pre-inserted angle of incidence.
Normal loop resistance value also only produces millivolt level in tens micro-ohms to hundreds of micro-ohms by the electric currents of hundreds of peaces
Voltage drop, in order that AD accurately can change voltage, it is necessary to which input voltage is amplified into certain multiple.Two panels high accuracy
Digitally programmable amplifier AD526 cascades highest can amplify 256 times, and loop resistance voltage also can be by its essence in wide variation
Really amplification.
Using 32 fixed DSP TMS320F2812 as controller, its working frequency is up to 150MHz, and has built-in 16 passages
12 high-speed ADs, 2 sampling hold circuits, it is possible to achieve double-channel signal is gathered and preserved, and enormously simplify circuit design, is protected
The real-time of data is demonstrate,proved.
The overall structure of tester is as shown in Figure 2.Voltage signal is handled by modulate circuit, and letter is carried out using built-in AD
Number collection, DSP are responsible for data processing, charging and discharging circuit control and liquid crystal display.Signal conditioning circuit is as shown in figure 3, electric capacity is electric
Pressure, switching-on resistance voltage, sampling resistor voltage all input via the differential amplifier circuit of LM324 compositions.Loop resistance voltage is believed
The pga circuit that number modulate circuit is made up of two panels AD526.Current divider voltage signal is first sensed by high-accuracy voltage
Device V121U07 is obtained, and is sent into DSP.
The function of dsp controller：
1) electric capacity charge control:DSP, which sends signal, makes charge circuit start working, and starts AD conversion, gathers capacitance voltage
Signal, after being charged to predeterminated voltage, disconnect charge circuit；
2) electric capacity control of discharge:Collection voltages data, after judging breaker closing, DSP sends signal control thyristor
Conducting, makes super capacitor discharge, while collection voltages, current data；
3) data processing section:Processing is filtered to the signal for inputting DSP, error correction, adjusts AD526 times magnifications
Number, judges circuit-breaker status, obtains discharge current value and magnitude of voltage；
Display function:The value of display menu, prompt message, switching-on resistance, loop resistance and the pre-inserted angle of incidence.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (4)
1. high voltage circuit breaker closing resistance multifunctional integrated tester, it is characterised in that：Including a test major loop, the test
Major loop includes super capacitor energy-storage module, the constant-current charging power for the charging of super capacitor energy-storage module, the super capacitor
Energy-storage module one terminates two branched lines, other end ground connection, wherein the current-limiting resistance that a branch line includes being connected in series is with adopting
Sample resistance, another branch line include IGCT, the current divider being connected in series；
It is connected after two branch line bouts with breaker closing resistance, the switching-on resistance other end is connected with super-capacitor module；
The switching-on resistance is connected with a main switch S1, in parallel with an auxiliary switch S2 and small-sized electric capacity.
2. high voltage circuit breaker closing resistance multifunctional integrated tester according to claim 1, it is characterised in that：The survey
Super-capacitor voltage signal, switching-on resistance voltage U2 signals and the sampling resistor voltage U1 signals measured by major loop are tried by letter
After the processing of number modulate circuit, be sent into dsp controller, after dsp controller is handled by numerical value show and LCDs on；
The current divider voltage U3 signals are first obtained by high precision electro pressure sensor V121U07, are sent into DSP.
3. high voltage circuit breaker closing resistance multifunctional integrated tester according to claim 2, it is characterised in that：The letter
Number modulate circuit is included by the LM324 differential amplifier circuits formed and the pga circuit being made up of two panels AD526.
4. high voltage circuit breaker closing resistance multifunctional integrated tester according to claim 2, it is characterised in that：It is described
Dsp controller is 32 fixed DSP TMS320F2812, built-in 16 Channel 12-Bit high-speed AD, 2 sampling hold circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303332.6U CN207037027U (en) | 2017-03-27 | 2017-03-27 | High voltage circuit breaker closing resistance multifunctional integrated tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303332.6U CN207037027U (en) | 2017-03-27 | 2017-03-27 | High voltage circuit breaker closing resistance multifunctional integrated tester |
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| Publication Number | Publication Date |
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| CN207037027U true CN207037027U (en) | 2018-02-23 |
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| CN201720303332.6U Expired - Fee Related CN207037027U (en) | 2017-03-27 | 2017-03-27 | High voltage circuit breaker closing resistance multifunctional integrated tester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490348A (en) * | 2018-05-25 | 2018-09-04 | 广东电网有限责任公司 | Method, device and system for testing performance of circuit breaker with double ground knives |
| CN109802152A (en) * | 2019-02-20 | 2019-05-24 | 广西睿奕新能源股份有限公司 | Monitor the circuit structure of lithium disposable battery capacity |
| CN114167268A (en) * | 2021-11-15 | 2022-03-11 | 广西电网有限责任公司南宁供电局 | Circuit breaker characteristic test auxiliary device |
| CN114325375A (en) * | 2021-12-31 | 2022-04-12 | 福建中网电气有限公司 | Multifunctional detection equipment and detection method for pole-mounted circuit breaker |
| CN117554857A (en) * | 2023-12-22 | 2024-02-13 | 湖南恩智测控技术有限公司 | Method and device for detecting instantaneous disconnection of wire harness or connector and storage medium |
-
2017
- 2017-03-27 CN CN201720303332.6U patent/CN207037027U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490348A (en) * | 2018-05-25 | 2018-09-04 | 广东电网有限责任公司 | Method, device and system for testing performance of circuit breaker with double ground knives |
| CN109802152A (en) * | 2019-02-20 | 2019-05-24 | 广西睿奕新能源股份有限公司 | Monitor the circuit structure of lithium disposable battery capacity |
| CN109802152B (en) * | 2019-02-20 | 2022-04-05 | 广西睿奕新能源股份有限公司 | Application of circuit structure for monitoring capacity of lithium disposable battery |
| CN114167268A (en) * | 2021-11-15 | 2022-03-11 | 广西电网有限责任公司南宁供电局 | Circuit breaker characteristic test auxiliary device |
| CN114167268B (en) * | 2021-11-15 | 2024-01-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker characteristic test auxiliary device |
| CN114325375A (en) * | 2021-12-31 | 2022-04-12 | 福建中网电气有限公司 | Multifunctional detection equipment and detection method for pole-mounted circuit breaker |
| CN117554857A (en) * | 2023-12-22 | 2024-02-13 | 湖南恩智测控技术有限公司 | Method and device for detecting instantaneous disconnection of wire harness or connector and storage medium |
| CN117554857B (en) * | 2023-12-22 | 2024-06-04 | 湖南恩智测控技术有限公司 | Method and device for detecting instantaneous disconnection of wire harness or connector and storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180223 |