CN101034801A - Online testing method of electrical arc light protection unit - Google Patents
Online testing method of electrical arc light protection unit Download PDFInfo
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- CN101034801A CN101034801A CN 200710021083 CN200710021083A CN101034801A CN 101034801 A CN101034801 A CN 101034801A CN 200710021083 CN200710021083 CN 200710021083 CN 200710021083 A CN200710021083 A CN 200710021083A CN 101034801 A CN101034801 A CN 101034801A
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Abstract
The invention relates to an arc light protection unit on-line test method, (1) installs the arc light sensor in the switch cabinet, and around the arc sensor fixed the simulation light source of which light intensity is adjustable; (2) under the electric system normal operation condition, through the change-over switch temporarily relieves the arc light protection unit and the electric system electrical connection, and connect with the test unit; (3) the test unit contrl the simulation fault current and simulation light intensity which brought to arc protection unit, the movement performance of test arc protection unit under the certain intensity light and current effect; (4) the test unit automatic logging the arc protection unit test result under the certain intensity light and current effect, judge the arc protection unit operating whether or not normal. The invention can on-line test and log the precise movement parameter of the arc protection unit under the different current and light intensity effect, and supplies a precise test means for guaranting the arc protection unit unitreliable movement.
Description
Technical field
The present invention relates to the method for testing of switching devices protected location in a kind of electric power system, especially relate to a kind of under the electric power system normal running (operation) conditions, can be to the method for electrical arc light protection unit on-line testing.
Background technology
When switchgear was short-circuited fault, the electric arc rapid release energy that is produced increased sharply the pressure and temperature in the switchgear, and the energy that produces because of electric arc is with I
2T index law fast rise is so in case electric arc is lighted, just ionization at once of ambient air, and produce powerful explosive pressure and high temperature as untimely excision, will cause a serious accident.At present, the switchgear in the low-pressure system adopts following three kinds of guard methods usually: (1), transformer reserve overcurrent protection, its operate time of protection is 1.2s～1.4s; (2), adopt the transformer reserve overcurrent protection of feeder line fast tripping protection locking, operate time of protection is 300ms～400ms; (3), high impedance protection, operate time of protection is 35ms～60ms.This shows, above-mentioned first kind and second kind of guard method switching devices protection, to the requirement of total mute time less than 100ms, operate time is oversize.And adopting the third protection, its protection range is subjected to the restriction of CT installation site, the equipment price costliness.
At the problems referred to above; present disclosed electric arc light protection method is the arc light that is produced when by the sense switch cabinet is inner serious short trouble taking place; and realize rapid and reliable protection action in conjunction with the overcurrent locking, make the arclight protection system that tripping operation output less than 20ms can be provided.So adopt the total failare mute time of this method can be, and the short trouble switching devices can not cause tangible damage, be the equipment of protecting the most fast at present less than 80ms～100ms.But at present electrical arc light protection unit is carried out method of testing and all adopt the off-line test method; test the performance of electrical arc light protection unit as the size of regulating the intensity of light source and simulated failure electric current by off-line; or utilize light sources such as handing photoflash lamp that electrical arc light protection unit is tested; but above-mentioned two arclights protection method of testing is too simple, can not accurately detect the action parameter of protection control unit reality.
In electric power system; electrical arc light protection unit mainly is responsible for realizing the electrical system bus short-circuit protection; and the precision of the arc photosensor of electrical arc light protection unit and sensitivity all are very easy to be subjected to the influence of factor such as environmental pollution, make the protective device accuracy of action and rapidly the property appearance change.Therefore the tripping and the malfunction of protective device all can cause great loss.In order to guarantee the normal operation of electric power system, under the condition of not interrupting power system operation, electric protection device is carried out the very important direction that on-line testing is the power equipment development.
Summary of the invention
The purpose of this invention is to provide a kind of online testing method of electrical arc light protection unit; under the condition that does not influence the normal operation of electric power system; by control analog light intensity and simulated failure size of current; on-line testing and write down given fault current and the arc light intensity effect under; the technical parameter of electrical arc light protection unit action, thus realize that electrical arc light protection unit continues, operation reliably.
The present invention is that the technical scheme that achieves the above object is: a kind of online testing method of electrical arc light protection unit, it is characterized in that: (1), at first arc photosensor is installed in switch cubicle, the adjustable analog light source of fixed light intensity around arc photosensor, the analog light source installation site can guarantee that the luminous energy that analog light source sends is received by arc photosensor; (2), under the condition of the normal operation of electric power system, remove being electrically connected of electrical arc light protection unit and electric power system, electrical arc light protection unit is connected with test cell by change over switch temporarily; (3), test cell control is applied to simulated failure electric current and analog light intensity on the electrical arc light protection unit, the test electrical arc light protection unit is at the light of given intensity and the performance under the function of current; (4), test cell writes down electrical arc light protection unit test result under various conditions automatically, and judges whether the electrical arc light protection unit operation is normal.
The principle of online testing method of electrical arc light protection unit of the present invention: when electric power system normally moves, utilize being electrically connected of change over switch interim breaking arc light protected location and electric power system, and electrical arc light protection unit is connected with test cell.By the test cell control action in the luminous intensity on the arc photosensor be applied to the size of the simulated failure electric current on the electrical arc light protection unit; arc light and electric current change procedure under the simulation structure electric power system fault condition; the operate time of test electrical arc light protection unit under the different faults condition; test cell judges automatically whether the electrical arc light protection unit operation is normal, and writes down all test datas.
Adopt technical scheme of the present invention, have following characteristics:
1, online the carrying out of protection test do not need to interrupt the normal operation of electric power system.Because the present invention is fixed on switchgear inside with analog light source; do not need to open switchgear; when being electrically connected of electrical arc light protection unit and electric power system switches on the test cell; do not need to stop normal operation power system; under the cooperation of the controllable simulation light source that is fixedly mounted on device interior; control the analog light intensity that applies by test cell; and be applied to simulated failure electric current on the electrical arc light protection unit; the fault signature of simulation structure electric power system, thus the performance of electrical arc light protection unit is detected.Method of testing of the present invention has the electric power system do not disturbed normally moves the advantage that test result is accurate, easy and simple to handle, safe.
2, accurately control test condition.Method of testing of the present invention is the size of regulating luminous intensity and simulated failure electric current by test cell, the fault condition and the test result of simulation are all more accurate, measuring accuracy to operate time can be controlled in the 0.1ms, the precision of simulated failure electric current is less than 0.5%, and the absolute error of analog light intensity is less than 200LUX.
3, improve the fail safe of protection system.Because online detection of the present invention's energy; prevent influence because of factors such as environmental pollution in the switchgear long-play process, temperature fluctuation and element function variations; the defective of electrical arc light protection unit be can find early, whole electrical arc light protection unit lasting security, operation reliably guaranteed.
4, flexible configuration, adaptability is strong.The arrangement of analog light source of the present invention is flexible, can select the installation site and the mounting means of light source according to the concrete structure of switchgear flexibly.Therefore can be applied in the mesolow switchgear of various installation arclight protection systems, also can be used in the project of upgrading and rebuilding of the various switch cubicles that put into operation and bus protection system.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are made the detailed description carry out.
Fig. 1 is the test flow chart of arclight protection system of the present invention.
Embodiment
Online testing method of electrical arc light protection unit of the present invention is as follows: (1); at first at the inner arc photosensor of installing of switchgear; the installation site of arc photosensor can receive the arclight that is produced when switchgear breaks down; the adjustable analog light source of fixed light intensity around arc photosensor; position by arc photosensor; determine the installation site and the mounting means of analog light source; the luminous energy that analog light source sends is accepted receipts effectively by arc photosensor; analog light source is installed firmly, avoids strong shock and vibration effect in power equipment operation and the normal use.Analog light source of the present invention in addition can be selected the bigger lamps of luminous intensity such as high brightness halogen lamp, and the luminous intensity of light source must reach more than the 8000LUX.(2), under the condition of the normal operation of electric power system; remove being electrically connected of electrical arc light protection unit and electric power system by change over switch temporarily; electrical arc light protection unit is connected, with the normal operation of the simulated failure condition influence electric power system avoiding constructing with test cell.The present invention can realize by the change over switch of two stations; the electric current input and output that a service position of this change over switch is an electrical arc light protection unit are connected with the operation power system; another service position of change over switch is that the electric current input and output of electrical arc light protection unit are connected with test cell; when electrical arc light protection unit is tested, will get final product on the service position that change over switch is transformed into test cell is connected.(3); after confirming that test cell is connected correctly with electrical arc light protection unit; test cell applies the fault simulation electric current; the input current that applies analog light source simultaneously is to change the luminous intensity of analog light source; light and current condition that the action of structure electrical arc light protection unit needs; test cell can be regulated continuously to the analog light intensity and the simulated failure size of current that apply; also can carry out discrete adjustment to the analog light intensity and the simulated failure size of current that are applied; make test cell control simulated failure electric current and the analog light intensity that is applied on the electrical arc light protection unit, test electrical arc light protection unit at the light of given intensity and the performance under the function of current.(4), when applying simulated failure electric current and simulated failure luminous intensity, test cell is measured the time of electrical arc light protection unit action and the state of electrical arc light protection unit output signal automatically, judges whether the electrical arc light protection unit operation normal.
The present invention can guarantee the photaesthesia part of the luminous energy arrival arc photosensor that analog light source produces in order to make the analog light source arrangement, and light source can adopt multiple arrangement.The dead ahead that analog light source can be arranged in arc photosensor photoinduction face to, this moment, light source power was bigger, the distance of light source and arc photosensor is far away; Also analog light source and arc photosensor homonymy can be installed, make analog light source be arranged in the periphery of arc photosensor along vertical; Also analog light source and arc photosensor homonymy can be installed, and analog light source becomes 30 °～60 ° angles with arc photosensor, it is less that this arrangement is interfered the photosensitive region of arc photosensor, guarantees that easily analog light source can normally arrive sensor surface.The above-mentioned arc photosensor of the present invention also can adopt Fibre Optical Sensor or lens type transducer.
After the present invention tests electrical arc light protection unit first or the installation site of analog light source is regulated; as shown in Figure 1; need to demarcate to being installed in the switchgear luminous intensity of analog light source; the basic parameter of typing electrical arc light protection unit in test cell then; model comprising electrical arc light protection unit; the installation site; operating current; operating voltage and applying unit etc.; behind the basic parameter of typing electrical arc light protection unit; test required luminous intensity and electric current are set; whole being electrically connected between breaking arc light protected location and operation power system; electrical arc light protection unit is connected with test cell; connection is finished and is confirmed that errorless back starts test, and test cell is tested and logging test results automatically.When the needs retest, new test current and luminous intensity condition can be set, proceed new test.
Claims (6)
1, a kind of online testing method of electrical arc light protection unit is characterized in that: (1), at first arc photosensor is installed in switch cubicle, the adjustable analog light source of fixed light intensity around arc photosensor; (2), under the condition of the normal operation of electric power system, remove being electrically connected of electrical arc light protection unit and electric power system, electrical arc light protection unit is connected with test cell by change over switch temporarily; (3), test cell control is applied to simulated failure electric current and analog light intensity on the electrical arc light protection unit, the test electrical arc light protection unit is at the light of given intensity and the performance under the function of current; (4), test cell writes down electrical arc light protection unit automatically in the light of given intensity and the test result under the current condition, and judges whether the electrical arc light protection unit operation is normal.
2, online testing method of electrical arc light protection unit according to claim 1 is characterized in that: the dead ahead that described analog light source is arranged in arc photosensor light sensation correspondence to.
3, online testing method of electrical arc light protection unit according to claim 1 is characterized in that: described analog light source and arc photosensor homonymy are installed, and analog light source is arranged in the periphery of arc photosensor along vertical.
4, online testing method of electrical arc light protection unit according to claim 1 is characterized in that: described analog light source and arc photosensor homonymy are installed, and analog light source becomes 30 °～60 ° angle with arc photosensor.
5, online testing method of electrical arc light protection unit according to claim 1 is characterized in that: analog light intensity that described test cell applies and simulated failure electric current can be regulated continuously.
6, online testing method of electrical arc light protection unit according to claim 1 is characterized in that: analog light intensity that described test cell applies and simulated failure electric current can discrete adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021083 CN101034801A (en) | 2007-03-23 | 2007-03-23 | Online testing method of electrical arc light protection unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021083 CN101034801A (en) | 2007-03-23 | 2007-03-23 | Online testing method of electrical arc light protection unit |
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| CN101034801A true CN101034801A (en) | 2007-09-12 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752846B (en) * | 2008-12-03 | 2011-12-14 | 郭鸿 | Arc short-circuit protection device and control method |
| CN103098393A (en) * | 2010-09-10 | 2013-05-08 | 株式会社藤仓 | Data transmittance device, data transmittance method, and data transmittance device control program |
| CN103733457A (en) * | 2011-08-16 | 2014-04-16 | 施耐德电气美国股份有限公司 | Adaptive light detection for arc mitigation systems |
| CN104198867A (en) * | 2014-09-22 | 2014-12-10 | 山东中瑞电气有限公司 | Testing method and testing equipment for arc protection device |
| CN104237674A (en) * | 2014-08-18 | 2014-12-24 | 安徽罗伯特科技股份有限公司 | Portable arc light protecting calibration device |
| CN104332833A (en) * | 2014-11-14 | 2015-02-04 | 成都华瑞祥电器成套设备有限公司 | Electrical control high-tension switch cabinet |
| CN105259441A (en) * | 2015-10-26 | 2016-01-20 | 江苏省电力公司淮安供电公司 | Detection apparatus and method for switchgear primary equipment arc light warning and protection device |
| CN110618337A (en) * | 2019-10-30 | 2019-12-27 | 云南恒协科技有限公司 | Arc light protection device calibrator |
| CN113991615A (en) * | 2021-10-19 | 2022-01-28 | 国网江苏省电力有限公司无锡供电分公司 | Critical arc light phase-locking judgment method and device |
| CN115632379A (en) * | 2022-11-09 | 2023-01-20 | 安徽得润电气技术有限公司 | Multi-way detection arc light protection system for vcs isolating switch box |
-
2007
- 2007-03-23 CN CN 200710021083 patent/CN101034801A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752846B (en) * | 2008-12-03 | 2011-12-14 | 郭鸿 | Arc short-circuit protection device and control method |
| CN103098393A (en) * | 2010-09-10 | 2013-05-08 | 株式会社藤仓 | Data transmittance device, data transmittance method, and data transmittance device control program |
| CN103098393B (en) * | 2010-09-10 | 2014-03-12 | 株式会社藤仓 | Data transmittance device and data transmittance method |
| CN103733457B (en) * | 2011-08-16 | 2017-08-18 | 施耐德电气美国股份有限公司 | Mitigate the adaptive optical detection of system for electric arc |
| CN103733457A (en) * | 2011-08-16 | 2014-04-16 | 施耐德电气美国股份有限公司 | Adaptive light detection for arc mitigation systems |
| CN104237674A (en) * | 2014-08-18 | 2014-12-24 | 安徽罗伯特科技股份有限公司 | Portable arc light protecting calibration device |
| CN104237674B (en) * | 2014-08-18 | 2017-08-29 | 安徽罗伯特科技股份有限公司 | A kind of portable electric arc protection caliberating device |
| CN104198867A (en) * | 2014-09-22 | 2014-12-10 | 山东中瑞电气有限公司 | Testing method and testing equipment for arc protection device |
| CN104198867B (en) * | 2014-09-22 | 2016-09-07 | 山东中瑞电气有限公司 | Detection Apparatus and method for for arc light protecting device |
| CN104332833A (en) * | 2014-11-14 | 2015-02-04 | 成都华瑞祥电器成套设备有限公司 | Electrical control high-tension switch cabinet |
| CN105259441A (en) * | 2015-10-26 | 2016-01-20 | 江苏省电力公司淮安供电公司 | Detection apparatus and method for switchgear primary equipment arc light warning and protection device |
| CN110618337A (en) * | 2019-10-30 | 2019-12-27 | 云南恒协科技有限公司 | Arc light protection device calibrator |
| CN113991615A (en) * | 2021-10-19 | 2022-01-28 | 国网江苏省电力有限公司无锡供电分公司 | Critical arc light phase-locking judgment method and device |
| CN113991615B (en) * | 2021-10-19 | 2024-04-26 | 国网江苏省电力有限公司无锡供电分公司 | Critical arc light phase locking judging method and device |
| CN115632379A (en) * | 2022-11-09 | 2023-01-20 | 安徽得润电气技术有限公司 | Multi-way detection arc light protection system for vcs isolating switch box |
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Open date: 20070912 |