CN106410739B - A kind of arc light protecting device and its method for diagnosing faults - Google Patents
A kind of arc light protecting device and its method for diagnosing faults Download PDFInfo
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- CN106410739B CN106410739B CN201610945569.4A CN201610945569A CN106410739B CN 106410739 B CN106410739 B CN 106410739B CN 201610945569 A CN201610945569 A CN 201610945569A CN 106410739 B CN106410739 B CN 106410739B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
- H02H1/0015—Using arc detectors
- H02H1/0023—Using arc detectors sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Relating To Insulation (AREA)
Abstract
一种弧光保护装置及其故障诊断方法，包括弧光保护主控单元，电学探头和温度探头；采用电学探头满足电学信号阈值条件，采用温度探头满足阈值条件，两者取“与”操作，然后通过定时器的延时，弧光保护装置方可进行动作。本发明主要判据基于温度参量而不是弧光参量，可以更早期的发现弧光故障，温度探头也更方便校验，具有一定的市场前景。
An arc protection device and a fault diagnosis method thereof, comprising an arc protection main control unit, an electrical probe and a temperature probe; the electrical probe is used to meet the threshold condition of an electrical signal, and the temperature probe is used to meet the threshold condition, and the two are "AND" operation, and then pass the After the timer is delayed, the arc protection device can operate. The main criterion of the invention is based on the temperature parameter instead of the arc parameter, the arc fault can be detected earlier, the temperature probe is more convenient to check, and has a certain market prospect.
Description
Technical field
A kind of arc protection dress used when relationship second protection apparatus field of the present invention more particularly to a kind of arc short-circuit
It sets and its method for diagnosing faults.
Background technique
With the fast development of power grid, the safeguard measure of 110kV and the existing comparative maturity of above, 6kV
It is full factory's subsidiary engine/power supply system for armature that (10kV), which arrives station-service IVdistribution switch cabinet in this voltage class ranges of 35kV,
Whether knob can cut off rapidly failure when internal fault occurs, to the safe operation of full factory (substation) distribution system to Guan Chong
Want, but press current protection scheme: in the power system, the bus of 35kV and following voltage class is not due to having stabilization to ask
Topic, does not install bus protection generally.However, since the outlet on middle voltage bus bar is more, frequent operation, three-phase conductor wire spacing
With it is closer at a distance from the earth, be easy endangered by toy, device fabrication quality is poorer than high-tension apparatus, apparatus insulated aging and machine
Tool abrasion, service condition is severe, and system operation conditions change, and reasons, the failure of middle voltage bus bar such as artificial and operating mistake are several
Rate is more much higher than high pressure, super-pressure bus.But for a long time, people pay little attention to always the protection of middle voltage bus bar, mostly
Failure on bus is cut off using the back-up protection with larger delay, failure is often made to be developed, expand.
In view of the critical role of middle pressure bus, the delay excision of any failure, is all that we are extremely unwilling that sees shows
Shape, because high temperature, high pressure, arc light, vibration, plosive that the arclight in switchgear generates when occurring are set to correlations such as switchgears
It is standby to cause serious damage, or even feed through to transformer, burning for transformer is caused, seriously jeopardizes the safety of the person, to make
At huge economic loss.Such as power supply bureau, Anhui electric power company 220kV substation 35kV switchgear maloperation electric arc in 2009
Light accident causes a people dead；Chongqing Station Service Electrical-Energy incoming line cabinet current transformer insulated electro arc fault causes to stop within 2009
Machine and house transformer depot repair；Yunnan Power Grid Company " 2.24 " accident in 2011, Nujiang substation, power supply bureau is because of electric arc
Light accident causes a people dead.
Since many years operation shows that arc protection greatly damages the person and equipment belt inside mesolow power distribution cabinet, respectively
State electric power expert starts that arclight failure is studied and recognized.International Electrotechnical Commission IEC has revised its IEC60298-
2003 standards Medium Voltage Switchgear internal arc light failure Producing reason, solution and test method, Canadian electric power and
Electronic manufacture Business Association (EEMAC) has formulated the test rule of metallic armoured switch cabinet resistance under conditions of internal arc fault
Then, the U.S. has published the test directive/guide that arc fault inside metallic armoured switch cabinet is pressed in IEEE C37.20.7.Furthermore the U.S. exists
Electric power employment security production aspect dodges accident for electric arc arc of lighting and establishes relevant criterion and requirement, American National fire prevention association
(NFPA), it as a supplement of American National electric power specification (NBC), has formulated NFPA 70E-2004 occupation electric power safety and has wanted
Seek standard.According to the existing standard GB 3906-2006 in IEC60298-2003 standard formulation China, " 3.6kV~40.5kV is handed over for the country
Flow metal enclosed switchgear and control equipment ", internal arc grade switchgear and control equipment (IAC) are defined, inside
Fault electric arc test determination is the type approval test that must be done.
In recent years due to the continuous understanding to Internal faults arc characteristic parameter, Medium Voltage Switchgear correlation new standard is to preventing arc
The continuous improvement of light failure requirements, domestic some experts emphasize to install the importance of dedicated middle voltage bus bar protection, user always
Also wish can to provide that a kind of cost is relatively low, and principle is simple, suitable for the bus protection of 6-35kV, to minimize bus
Damage of the failure to equipment, provides power supply reliability, and the dedicated bus arc light protecting system as prestissimo comes into being, it
It can not only be advantageously applied to also can easily be attached in the switchgear run in new clothes switchgear, target is exactly
Arc fault is cut off in one time minimizes personal injury and equipment damage, has price compared with other dedicated bus protections
Advantage.
It is on the market mostly at present the detection probe of electric current and optic probe as arc light protecting device, but the probe arc light
It is difficult to verify, and then determines its optical accuracy.
Summary of the invention
The purpose of the present invention is to overcome the problems of the above-mentioned prior art to use for reference existing arc light protecting device
Advantage overcomes arc probe to be difficult to the shortcomings that verifying and proposes a kind of arc light protecting device and its method for diagnosing faults, technical side
Case is as follows:
A kind of arc light protecting device, present invention is characterized in that including arc protection main control unit, electricity probe and temperature are visited
Head, electricity probe is voltage probe or current probe, for detecting arc light electrical signal information, is believed for the voltage that arc short-circuit generates
Number or current signal, temp probe be using fiber optic temperature measuring probe, predominantly detect the temperature signal of bus or electric equipments,
Electricity probe and temp probe are directly connected to arc protection main control unit, main control unit by analysis, calculate, the operation such as processing
Provide trip signal.
Electricity probe of the present invention is preferably current probe, and temp probe is preferably ribbon fiber temperature probe.
Fiber optic temperature measuring probe of the present invention is by being wrapped in around emphasis equipment or on switch cabinet bus.
Temperature probe of the present invention is less than 40cm for detecting temperature value, probe and equipment under test distance r.
Temperature probe of the present invention detects temperature value, and when probe and equipment under test distance are r, temperature value is then are as follows: face
Distance is a, and area is (pi*r3The mean temperature in/a) region.
1, a value range of the present invention is (15-30) cm, preferably 20cm.
A kind of method for diagnosing faults according to above-mentioned arc light protecting device in arc protection action process, feature of present invention
It is: electrical signal threshold condition is met using electricity probe, threshold condition is met using temp probe, the two takes "AND" to grasp
Make, then by the delay of timer, arc light protecting device can be acted, when electricity probe is using voltage probe, electricity
Press signal threshold value are as follows: (120-150) % of voltage rating virtual value, when using current probe, current signal threshold value are as follows: electric current work
Frequency signal synthesizes (120-200) % of virtual value, temperature signal threshold value are as follows: equipment sustainable operation with (3-25) secondary odd harmonic
(120-150) % of maximum temperature.
The delay time of timer of the present invention is (200-500) ms.
The beneficial effects obtained by the present invention are as follows being: present invention primarily contemplates early detection equipment arc discharge class failures, out
After existing temperature anomaly, also indicating that equipment, there are hidden danger, and are not limited only to arc light criterion.
The present invention proposes a kind of arc light protection method that can be effectively monitored, handle when arc fault just occurs.
It generates in arc light, can be acted when only temperature increases not yet, it can be with staff near effective protection from arclight pair
The injury of the person, protects medium/low-voltage equipment from seriously destroying, preventing fire；Protect main transformer or house transformer
It is damaged from serious impact；It prevents from involving occupancy direct current system, causes huge economic loss；Reduce user to the maximum extent
Power off time (user's service restoration time is reduced by original several weeks or several days within several hours), extend existing
There is the service life of switch relevant device.
Detailed description of the invention
Fig. 1 is arc light protecting device structural schematic diagram；
Fig. 2 is arc fault diagnostic method schematic diagram；
Temperature sensor configuration schematic diagram when Fig. 3 is single mother partition.
Specific embodiment
See Fig. 1, a kind of arc light protecting device, present invention is characterized in that include arc protection main control unit, electricity probe and
Temp probe, electricity probe is voltage probe or current probe, for detecting arc light electrical signal information, is generated for arc short-circuit
Voltage signal or current signal, temp probe are to predominantly detect the temperature of bus or electric equipments using fiber optic temperature measuring probe
Spend signal, electricity probe and temp probe are directly connected to arc protection main control unit, main control unit by analysis, calculate, place
The operations such as reason provide trip signal.
Electricity probe of the present invention is preferably current probe, and temp probe is preferably ribbon fiber temperature probe.
Fiber optic temperature measuring probe of the present invention is by being wrapped in around emphasis equipment or on switch cabinet bus.
Temperature probe of the present invention is less than 40cm for detecting temperature value, probe and equipment under test distance r.
Temperature probe of the present invention detects temperature value, and when probe and equipment under test distance are r, temperature value is then are as follows: face
Distance is a, and area is (pi*r3The mean temperature in/a) region.A value range is (15-30) cm, preferably 20cm.
See Fig. 2, Fig. 3, a kind of method for diagnosing faults according to above-mentioned arc light protecting device in arc protection action process,
Present invention is characterized in that meeting electrical signal threshold condition using electricity probe, threshold condition, the two are met using temp probe
With operation is taken, then by the delay of timer, arc light protecting device can be acted, when electricity probe is visited using voltage
When head, voltage signal threshold value are as follows: (120-150) % of voltage rating virtual value, when using current probe, current signal threshold value
Are as follows: electric current power frequency component synthesizes (120-200) % of virtual value, temperature signal threshold value are as follows: equipment with (3-25) secondary odd harmonic
(120-150) % of sustainable operation maximum temperature.
The delay time of timer of the present invention is (200-500) ms.
The object that all temperature are higher than absolute zero is all ceaselessly issuing infrared energy to surrounding space.Radiation energy
The size of amount has very close relationship by the distribution and its surface temperature of wavelength.Therefore, by being issued to object itself
Infrared energy measurement, just can accurately measure its surface temperature.Optic fiber thermometer can receive a variety of object own transmissions
Invisible radiation energy out.Radiation is a part of electromagnetic spectrum.When instrument thermometric, infrared spoke that testee is launched
Energy is penetrated, electric signal is switched to by the optical system of temperature measurer on the detector, and aobvious by the display portion of optic fiber thermometer
The surface temperature of testee is shown.
Optic fiber thermometer feature: non-contact measurement, temperature-measuring range is wide, fast response time, high sensitivity.But due to by quilt
The emissivity for surveying object influences, as a consequence it is hardly possible to measure the true temperature of measurand, measurement is surface temperature.Optical fiber temperature-measurement
Ensure that the most important factor of temperature measurement accuracy is emissivity, to the distance of hot spot, the position of hot spot, visual field.
(1) all objects can all reflect, through (being 0 for opaque material transmission rate) and emitted energy, but only
There is the energy energy indicator body temperature of transmitting, when optic fiber thermometer measures surface temperature, instrument can receive all three
Energy, therefore temperature measurer must be adjusted to that the energy of transmitting can be read, measurement error is usually drawn by the energy that other light sources reflect
It rises.Some temperature measurers can change emissivity, and when thermometric should be arranged to emissivity value identical with measured material as much as possible,
As make measurement indicating value consistent with the true temperature of measured object as possible.And fixed give of emissivity of most of instruments is set to 0.95, it should
The thermometer of emissivity will use one kind when measuring for the surface temperature of most of organic materials, paint or oxidized surface
Black tape or the pitch-dark measured surface that is applied to of zero diopter are compensated.Make black tape or pitch-dark when reaching mutually synthermal with base material,
It measures adhesive tape or paints the temperature on surface, as true temperature.
(2) the ratio between distance and hot spot (D:S), optical resolution are defined as instrument to the distance and tested spot size of object
The ratio between (D:S).Ratio is bigger, and the resolution ratio of instrument is better, and tested spot size is also just smaller.The optical system of optic fiber thermometer
System is collected energy from circle measurement hot spot and is focused on the detector.Note: laser aiming is only being measured to help to aim at
On point, the numerical value of as r and a in the present invention.
(3) visual field, it is ensured that target is greater than spot size when the instrument is measured, and target is smaller, just should be closer from it, works as precision
When especially important, it is to be ensured that target at least 2 times of spot sizes.In order to which the accurate thermometric of device temperature when guaranteeing calibrating should also be infused
It anticipates following item:
(1) for accurate thermometric, by the target center of optical fiber align radiation source target surface, guarantee arrange properly distance and spot size it
Than visual field, temperature data is read.
(2) thermometric cannot be carried out through glass, glass has very special reflection and through characteristic.
(3) pay attention to environmental condition: the intermediate mediums such as water vapour, dust, smog, carbon dioxide.It will affect accurate thermometric.
Arc light protecting device is generally used for mesolow air insulation switchgear, can be used as the quick protection of bus.It can also make
For the protection of switchgear internal short-circuit failure, such as the switch gear room and cable vault of switchgear.Arc light protecting device suggestion is matched by bus section, busbar section
It sets, i.e. one host (master unit) of every section of bus bar configuration meets several that this section of bus temperature monitoring point accesses quantitative requirement
The temperature sensor of slave (expanding element) and dispersed placement.
According to engineering practice (bus length, switchgear inner volume and structure, and monitoring range, it is convenient to overhaul
Deng), it is proposed that flexible configuration is carried out to arc light protecting device.
Arc light protecting device should realize the tripping of subregion field selectivity using reasonable logic, but during movement, need
Dead zone protection is considered, if transformer CT is mounted on above breaker, when needing to consider to break down between CT and breaker
Dead zone protection, when bus connection switch is in coincidence, need to consider failure occur between bus connection switch and bus connection switch CT when
Dead zone protection.
As shown in Figure 1, arc light protecting device includes electricity probe and temp probe, arc short-circuit generates early under normal circumstances
Phase has temperature and increases phenomenon, there is the rapid fluctuation of electric current and voltage signal variation when this happens, and the present invention is exactly according in this way
Physical phenomenon invention.
As shown in Fig. 2, the principle of arc light protecting device protection philosophy and the current electric current of producer and arc probe on the market
Almost the same, difference is that semaphore, influence factor, condition for detecting etc. are different.This patent main criterion is based on temperature
Parameter rather than arc light parameter.
Match simultaneously as shown in figure 3, introducing down band-like temperature sensor, dotted temperature sensor, current detecting unit
In the case where setting, the fault judgment method of arc light protecting device, by taking single mother partition as an example, band-like temperature sensor monitors two sections of mothers
Line temperature conditions, dotted temperature sensor monitor temperature conditions at each outlet contact of two sections of buses, sectionalized single busbar connection main electrical scheme side
Formula is as shown in figure 3, arc light protecting device also needs to access the jump position of block switch 3DL, and passes through " jumping block switch " outlet
Tripping 3DL.
Under bus section main wiring mode, bus is there are three types of power supply mode, it may be assumed that block switch 3DL is closed, I section of bus with
II sections of bus are powered by inlet wire 1；Block switch 3DL is closed, and I sections and bus II sections of bus are powered by inlet wire 2；Block switch
3DL points, I sections of bus are powered by inlet wire 1, and II sections of bus are powered by inlet wire 2.Arc protection needs while considering that three of the above is powered
Mode, it is proposed that relay protective scheme it is as follows: I sections of bus detect temperature exceeding standard, 1 overcurrent of inlet wire or 2 overcurrent of inlet wire and block switch
Non- jump position, then tripping inlet wire 1 and block switch；II sections of bus detect temperature exceeding standard, 2 overcurrent of inlet wire or 1 overcurrent of inlet wire and divide
The non-jump position Duan Kaiguan, then tripping inlet wire 2 and block switch.
Claims (4)
1. a kind of arc light protecting device, it is characterised in that: including arc protection main control unit, electricity probe and temp probe, electricity
Learning probe is voltage probe or current probe, for detecting arc light electrical signal information, the voltage signal that is generated for arc short-circuit or
Current signal；If temp probe be using fiber optic temperature measuring probe, predominantly detect the temperature signal of bus or electric equipments, if
Temp probe be ribbon fiber temperature probe, fiber optic temperature measuring probe by being wrapped in around emphasis equipment or on switch cabinet bus,
Temperature probe is less than 40cm for detecting temperature value, probe and equipment under test distance r；Temperature probe detects temperature value,
When probe and equipment under test distance are r, temperature value is then are as follows: is just adjusting the distance as a, area is (pi*r3The average temperature in/a) region
Degree；Electricity probe and temp probe are directly connected to arc protection main control unit, main control unit by analysis, calculate, place
After reason, trip signal is provided.
2. a kind of arc light protecting device according to claim 1, it is characterised in that: a value range is (15-30) cm.
3. a kind of method for diagnosing faults of the arc light protecting device in arc protection action process according to claim 1,
It is characterized in that: electrical signal threshold condition being met using electricity probe, threshold condition is met using temp probe, the two takes "AND"
Operation, then by the delay of timer, arc light protecting device can be acted, when electricity probe is using voltage probe,
Voltage signal threshold value are as follows: (120-150) % of voltage rating virtual value, when using current probe, current signal threshold value are as follows: electric current
Power frequency component synthesizes (120-200) % of virtual value, temperature signal threshold value with (3-25) secondary odd harmonic are as follows: the sustainable fortune of equipment
(120-150) % of row maximum temperature.
4. the method for diagnosing faults in arc protection action process according to claim 3, it is characterised in that: timer prolongs
When the time be (200-500) ms.
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| CN201610945569.4A CN106410739B (en) | 2016-11-02 | 2016-11-02 | A kind of arc light protecting device and its method for diagnosing faults |
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| CN201610945569.4A CN106410739B (en) | 2016-11-02 | 2016-11-02 | A kind of arc light protecting device and its method for diagnosing faults |
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Families Citing this family (5)
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| CN106771940B (en) * | 2017-03-01 | 2019-06-18 | 西安科技大学 | Circuit and method for detecting inductance breaking arc maintenance time by signal phase separation |
| CN109217237A (en) * | 2018-10-23 | 2019-01-15 | 安徽美昂电气有限公司 | A kind of AC feeder line arc light protecting device |
| CN109709504A (en) * | 2018-12-20 | 2019-05-03 | 四川铸新嘉舟新能源科技有限公司 | Charging pile master control box in-line calibration apparatus and system |
| CN110045206B (en) * | 2019-04-26 | 2021-06-29 | 紫光测控有限公司 | Redundancy check method and system for protecting non-redundant AD acquisition of measurement and control device |
| CN110286277A (en) * | 2019-05-31 | 2019-09-27 | 北京萨达智能技术有限公司 | Electric arc identification device and recognition methods based on Advanced Integrity Inspection Techniques |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201797308U (en) * | 2010-09-17 | 2011-04-13 | 南京师范大学 | Microcomputer arc protection device |
| CN102694372A (en) * | 2012-06-01 | 2012-09-26 | 南京师范大学 | Monitoring and arc protecting system for switch cabinet |
| CN103208786B (en) * | 2013-04-16 | 2015-06-17 | 国家电网公司 | Rapid protection system of electric power substation |
| CN104377664B (en) * | 2014-11-07 | 2017-10-20 | 成龙建设集团有限公司 | Mesolow arc light busbar protective device group |
| CN104617564A (en) * | 2015-01-20 | 2015-05-13 | 云南电网有限责任公司电力科学研究院 | Arc light protection method for electrical equipment |
| CN204794054U (en) * | 2015-07-14 | 2015-11-18 | 南京中凯光电技术有限公司 | A arc light protection system that is used for cubical switchboard cooking to go out circuit |
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