CN102185289A - Bus coupler charging protection method and system - Google Patents
Bus coupler charging protection method and system Download PDFInfo
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- CN102185289A CN102185289A CN2011101374728A CN201110137472A CN102185289A CN 102185289 A CN102185289 A CN 102185289A CN 2011101374728 A CN2011101374728 A CN 2011101374728A CN 201110137472 A CN201110137472 A CN 201110137472A CN 102185289 A CN102185289 A CN 102185289A
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Abstract
The embodiment of the invention discloses a bus coupler charging protection method and system. The method comprises the following steps of: judging the switching-on operation of a bus coupler circuit breaker: detecting three-phase voltages of all bus sections and any phase of current of a bus coupler; when the three-phase voltage of any bus section is larger than a first preset voltage, if the any phase of current of the bus coupler ascends to a numerical value which is larger than a first preset current and/or the bus phase voltage ascends to a numerical value which is larger than a second preset voltage in preset time, starting charging protection; judging that a bus charges the bus coupler: detecting any phase of current of the bus coupler and a phase voltage on the bus; and if any phase of current of the bus coupler ascends to a numerical value which is larger than the first preset current and/or the bus phase voltage ascends to a numerical value which is larger than the second preset voltage in preset time, starting charging protection. The method and the system provide various references for the start and action of charging protection, shorten the failure storage time and reduce the impact of the failure on the bus system.
Description
Technical field
The present invention relates to electrical system bus charge protection technical field, more particularly, relate to a kind of female connection charge protection method and system.
Background technology
Mother's connection charge protection is when preventing the operation bus by bus the fault auxiliary bus-bar to be charged, to cause the protection that moves equipment power failure on the bus and carry out.The action of described female connection charge protection is to adopt described bus excision auxiliary bus-bar, and isolated fault makes the safe operation of operation bus.
Existing when utilizing bus that auxiliary bus-bar charging is run into fault, then there is big electric current to flow through female receipts or other documents in duplicate unit, described circuit breaker carries out machinery and closes the position.
Yet; above-mentioned female connection charge protection method is to trigger circuit breaker by electric parameters (short circuit current) to produce the startup of mechanical quantity (position signalling) circuit breaker; the process that is transformed into mechanical quantity by this electric parameters need experience steps such as mechanical displacement, relay switching and cause time delay, thereby it is long and bus-bar system impacted big shortcoming to produce the fault resting period.
Summary of the invention
In view of this, the invention provides a kind of female connection charge protection method and system,, shorten the fault resting period and reduce the purpose that fault is impacted bus-bar system to realize shortening bus operate time.
A kind of female connection charge protection method is used for the bus protected mode, comprising:
Measure the three-phase voltage of each bus section, busbar section,, start charge protection when the three-phase voltage of arbitrary bus section, busbar section during all greater than first predeterminated voltage;
Measure the three-phase voltage and the arbitrary phase phase current of female connection of each bus section, busbar section, when the three-phase voltage of arbitrary bus section, busbar section during all greater than first predeterminated voltage, if when the arbitrary phase phase current of described female connection rises to and rises to numerical value greater than second predeterminated voltage greater than the numerical value of first predetermined current and/or described bus phase voltage in Preset Time, start charge protection;
Judge that bus joins charging to mother:
Measure phase voltage on female arbitrary phase phase current of connection and the bus; if when the arbitrary phase phase current of described female connection rises to and rises to numerical value greater than second predeterminated voltage greater than the numerical value of first predetermined current and/or described bus phase voltage in Preset Time, start charge protection.
Preferably, described first predeterminated voltage is 0.6 times a specified phase voltage; Described Preset Time was specially for 1/4 cycle; Described first predetermined current is specially 0.04 times specified phase current; Described second predeterminated voltage is specially 0.1 times specified phase voltage.
Above-mentioned predetermined voltage threshold, current threshold and mensuration Preset Time and inferior number average use as preferred, but are not limited to enumerate form
Described method also comprises: after charge protection starts, and when the mother who measures joins arbitrary phase phase current all be higher than the charging setting current after the METHOD FOR CONTINUOUS DETERMINATION preset times in the Preset Time section, described bus charge protection action.
Preferably, described Preset Time section is specially 300ms, and described preset times is specially 3 times.
A kind of female charge protection system that joins, female charge protection system that joins is provided with survey voltage device, clock, comparator and survey current device, wherein:
Described survey voltage device is connected with described comparator respectively with the survey current device;
Described survey voltage device is used for when judging the closing operation of bus,
Measure the three-phase voltage of each bus section, busbar section, when three-phase voltage during, and when the bus phase voltage rises to numerical value greater than second predeterminated voltage in Preset Time, trigger by described comparator and to start charge protection all greater than first predeterminated voltage;
And, judge that bus when mother joins charging, measures phase voltage on the bus, if when the bus phase voltage rises to numerical value greater than second predeterminated voltage in Preset Time, trigger by described comparator and to start charge protection;
When judging the closing operation of bus, when the three-phase voltage of arbitrary bus section, busbar section all under the condition greater than first predeterminated voltage, measure the arbitrary phase phase current of female connection, when the arbitrary phase phase current of described female connection rises to numerical value greater than first predetermined current in Preset Time, trigger by described comparator and to start charge protection;
And the judgement bus is measured female arbitrary phase phase current that joins when mother joins charging, when the arbitrary phase phase current of the interior described female connection of Preset Time rises to greater than the numerical value of first predetermined current, triggers the startup charge protection by described comparator;
Described Preset Time is determined by clock.
From above-mentioned technical scheme as can be seen; the embodiment of the invention is in order to solve the rapidity problem of female connection charge protection; variation by the three-phase voltage of each bus section, busbar section when bus closes a floodgate, female connection electric current, busbar voltage; and when powering in conjunction with bus-bar system the variation of female connection electric current and busbar voltage as the mode that starts charge protection; for the startup and the action of charge protection provides multiple reference; shortened the fault resting period, reduced the impact of fault bus-bar system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed a kind of female connection charge protection method flow chart of the embodiment of the invention;
Fig. 2 is the disclosed a kind of female connection charge protection method flow chart of further embodiment of this invention;
Fig. 3 is the disclosed a kind of female connection charge protection system configuration schematic diagram of further embodiment of this invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention discloses a kind of female connection charge protection method and device,, shorten the fault resting period and reduce the purpose that fault is impacted bus-bar system to realize shortening bus operate time.
Fig. 1 shows a kind of female connection charge protection method, comprising:
Step 11: be judged to be bus and carry out closing operation:
Measure the three-phase voltage of each bus section, busbar section, if the three-phase voltage of arbitrary bus section, busbar section all is higher than under 0.6 times the condition of specified phase voltage;
The arbitrary phase phase current of the female connection of mensuration rises to the specified phase current greater than 0.04 times in 1/4 cycle, then start charge protection, and/or:
The arbitrary phase voltage of mensuration bus rises to the specified phase voltage greater than 0.1 times in 1/4 cycle, then start charge protection;
Step 12:
Judge when bus is a certain auxiliary bus-bar charging:
The arbitrary phase phase current of the female connection of mensuration rises to the specified phase current greater than 0.04 times in 1/4 cycle, then start charge protection, and/or:
The arbitrary phase voltage of mensuration bus rises to the specified phase voltage greater than 0.1 times in 1/4 cycle, then start charge protection.
The foregoing description has kept and has originally joined the entry condition of charge protection by the bus position signalling as mother, has increased the variation that joins electric current, busbar voltage by mother joins charge protection as mother entry condition simultaneously.
According to each default entry condition bus close a floodgate or judge when carrying out closing operation to a certain auxiliary bus-bar power supply and the bus running in judge the time for a certain auxiliary bus-bar charging, promptly start protection.
The fault resting period has been shortened in the reference that provides multiple charge protection to start in the above-mentioned execution mode, has reduced the impact of fault to bus-bar system.
Fig. 2 shows another female connection charge protection method, comprising:
Step 21: judge that bus carries out closing operation:
Measure the three-phase voltage of each bus section, busbar section, if the three-phase voltage of arbitrary bus section, busbar section all is higher than under 0.6 times the condition of specified phase voltage;
The arbitrary phase phase current of the female connection of mensuration rises to the specified phase current greater than 0.04 times in 1/4 cycle, then start charge protection, and/or
The arbitrary phase voltage of mensuration bus rises to the specified phase voltage greater than 0.1 times in 1/4 cycle, then start charge protection;
Step 22:
Judge when bus is a certain auxiliary bus-bar charging:
The arbitrary phase phase current of the female connection of mensuration rises to the specified phase current greater than 0.04 times in 1/4 cycle, then start charge protection, and/or:
The arbitrary phase voltage of mensuration bus rises to the specified phase voltage greater than 0.1 times in 1/4 cycle, then start charge protection.
Step 23: charge protection starts the back:
When the mother who measures joins arbitrary phase phase current all be higher than the charging setting current after the METHOD FOR CONTINUOUS DETERMINATION preset times in the Preset Time section, described bus charge protection action.
As preferably, described Preset Time section is specially 300ms, and described preset times is specially 3 times.
Predetermined voltage threshold in the foregoing description, current threshold and mensuration Preset Time and inferior number average use as preferred, but are not limited to enumerate form.
Fig. 3 shows a kind of female charge protection system that joins, and comprising:
Described survey voltage device 32 is connected with described comparator 34 respectively with survey current device 35;
Described survey voltage device 32 is used for described survey voltage device and is used for when judging the closing operation of bus,
Measure the three-phase voltage of each bus section, busbar section, when three-phase voltage during all greater than first predeterminated voltage, (described Preset Time is determined by clock) triggers the startup charge protection by described comparator when the bus phase voltage rises to greater than the numerical value of second predeterminated voltage in Preset Time;
And the judgement bus is measured phase voltage on the bus when mother joins charging, if (described Preset Time is determined by clock) is when the bus phase voltage rises to greater than the numerical value of second predeterminated voltage in Preset Time, starts charge protection by described comparator triggering;
Described survey current device 35 is used for: when judging the closing operation of bus, when the three-phase voltage of arbitrary bus section, busbar section all under the condition greater than first predeterminated voltage, measure the arbitrary phase phase current of female connection, when the arbitrary phase phase current of (described Preset Time by clock determine) described female connection rises to numerical value greater than first predetermined current in Preset Time, trigger by described comparator 34 and to start charge protections;
And the judgement bus is measured female arbitrary phase phase current that joins when mother joins charging, when the arbitrary phase phase current of the interior described female connection of Preset Time rises to greater than the numerical value of first predetermined current, triggers the startup charge protections by described comparator 34.
In sum:
Embodiments of the invention are in order to solve the rapidity problem of female connection charge protection; variation by the three-phase voltage of each bus section, busbar section when bus closes a floodgate, female connection electric current, busbar voltage; and when powering in conjunction with bus-bar system the variation of female connection electric current and busbar voltage as the mode that starts charge protection; for the startup and the action of charge protection provides multiple reference; shortened the fault resting period, reduced the impact of fault bus-bar system.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed system of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. a female connection charge protection method is used for the bus protected mode, it is characterized in that, comprising:
Judge the closing operation of bus:
Measure the three-phase voltage and the arbitrary phase phase current of female connection of each bus section, busbar section, when the three-phase voltage of arbitrary bus section, busbar section during all greater than first predeterminated voltage, if when the arbitrary phase phase current of described female connection rises to and rises to numerical value greater than second predeterminated voltage greater than the numerical value of first predetermined current and/or described bus phase voltage in Preset Time, start charge protection;
Judge that bus joins charging to mother:
Measure phase voltage on female arbitrary phase phase current of connection and the bus; if when the arbitrary phase phase current of described female connection rises to and rises to numerical value greater than second predeterminated voltage greater than the numerical value of first predetermined current and/or described bus phase voltage in Preset Time, start charge protection.
2. method according to claim 1 is characterized in that, described first predeterminated voltage is 0.6 times a specified phase voltage.
3. method according to claim 1 is characterized in that described Preset Time was specially for 1/4 cycle.
4. method according to claim 1 is characterized in that, described first predetermined current is specially 0.04 times specified phase current.
5. method according to claim 1 is characterized in that, described second predeterminated voltage is specially 0.1 times specified phase voltage.
6. method according to claim 1; it is characterized in that; also comprise: after charge protection starts, when the mother who measures joins arbitrary phase phase current all be higher than the charging setting current after the METHOD FOR CONTINUOUS DETERMINATION preset times in the Preset Time section, described bus charge protection action.
7. method according to claim 6 is characterized in that, described Preset Time section is specially 300ms, and described preset times is specially 3 times.
8. female charge protection system that joins is characterized in that, female charge protection system that joins is provided with survey voltage device, clock, comparator and survey current device, wherein:
Described survey voltage device is connected with described comparator respectively with the survey current device;
Described survey voltage device is used for when judging the closing operation of bus,
Measure the three-phase voltage of each bus section, busbar section,, when the bus phase voltage rises to numerical value greater than second predeterminated voltage in Preset Time, trigger by described comparator and to start charge protection when three-phase voltage during all greater than first predeterminated voltage;
And, judge that bus when mother joins charging, measures phase voltage on the bus, if when the bus phase voltage rises to numerical value greater than second predeterminated voltage in Preset Time, trigger by described comparator and to start charge protection;
Described survey current device is used for: when judging the closing operation of bus, when the three-phase voltage of arbitrary bus section, busbar section all under the condition greater than first predeterminated voltage, measure the arbitrary phase phase current of female connection, when the arbitrary phase phase current of described female connection rises to numerical value greater than first predetermined current in Preset Time, trigger by described comparator and to start charge protection;
And the judgement bus is measured female arbitrary phase phase current that joins when mother joins charging, when the arbitrary phase phase current of the interior described female connection of Preset Time rises to greater than the numerical value of first predetermined current, triggers the startup charge protection by described comparator;
Described Preset Time is determined by clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110137472 CN102185289B (en) | 2011-05-25 | 2011-05-25 | Bus coupler charging protection method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110137472 CN102185289B (en) | 2011-05-25 | 2011-05-25 | Bus coupler charging protection method and system |
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| CN102185289A true CN102185289A (en) | 2011-09-14 |
| CN102185289B CN102185289B (en) | 2013-07-24 |
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| CN 201110137472 Active CN102185289B (en) | 2011-05-25 | 2011-05-25 | Bus coupler charging protection method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723697A (en) * | 2012-06-20 | 2012-10-10 | 湖州电力局 | Method for implementing intelligent tripping for back-up protection of transformer |
| CN104345223A (en) * | 2013-07-26 | 2015-02-11 | 中核核电运行管理有限公司 | 6KV voltage transformer and secondary loop power supply monitoring method thereof |
| CN107528299A (en) * | 2017-04-19 | 2017-12-29 | 张太升 | A kind of mother or segmented charge protection method |
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| JPH04190627A (en) * | 1990-11-22 | 1992-07-09 | Toshiba Corp | Digital bus protective relay |
| CN2645322Y (en) * | 2003-04-30 | 2004-09-29 | 黄浙勇 | Intelligent type power supply automatic transfer switch circuit arrangement |
| CN101442202A (en) * | 2008-12-30 | 2009-05-27 | 西安富邦电子科技有限公司 | Rapid protection device for indoor cable head |
| CN101630835A (en) * | 2009-08-12 | 2010-01-20 | 国电南京自动化股份有限公司 | Bus-coupled or segmented charge protection method |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04190627A (en) * | 1990-11-22 | 1992-07-09 | Toshiba Corp | Digital bus protective relay |
| CN2645322Y (en) * | 2003-04-30 | 2004-09-29 | 黄浙勇 | Intelligent type power supply automatic transfer switch circuit arrangement |
| CN101442202A (en) * | 2008-12-30 | 2009-05-27 | 西安富邦电子科技有限公司 | Rapid protection device for indoor cable head |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723697A (en) * | 2012-06-20 | 2012-10-10 | 湖州电力局 | Method for implementing intelligent tripping for back-up protection of transformer |
| CN102723697B (en) * | 2012-06-20 | 2014-10-29 | 湖州电力局 | Method for implementing intelligent tripping for back-up protection of transformer |
| CN104345223A (en) * | 2013-07-26 | 2015-02-11 | 中核核电运行管理有限公司 | 6KV voltage transformer and secondary loop power supply monitoring method thereof |
| CN107528299A (en) * | 2017-04-19 | 2017-12-29 | 张太升 | A kind of mother or segmented charge protection method |
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| Publication number | Publication date |
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| CN102185289B (en) | 2013-07-24 |
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Inventor after: Sun Xiaojiang Inventor after: Xiong Wei Inventor before: Jiang Jie Inventor before: Feng Yan Inventor before: Xiong Wei Inventor before: Tang Kunming Inventor before: Huang Xuanfa Inventor before: Sun Xiaojiang Inventor before: Huang Lian Inventor before: Li Bangfeng Inventor before: Zhang Taiqin Inventor before: Tao Zhijian Inventor before: Liu Qiang |
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Free format text: CORRECT: INVENTOR; FROM: JIANG JIE TANG KUNMING HUANG XUANFA SUN XIAOJIANG HUANG LIAN LI BANGFENG ZHANG TAIQIN TAO ZHIJIAN LIU QIANG FENG YAN XIONG WEI TO: SUN XIAOJIANG XIONG WEI |
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Effective date of registration: 20170204 Address after: 400000 Jiulongpo District of Chongqing Science Park Road No. 200 No. C-24-5 Patentee after: Chongqing New Century Electric Technology Co., Ltd. Address before: Jiulongpo Branch Park four 400041 Chongqing Road No. 170 Patentee before: Xinshiji Electrical Co., Ltd., Chongqing |
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Effective date of registration: 20181228 Address after: 400 000 No. 170, Keyuan No. 4 Road, Jiulongpo District, Chongqing Patentee after: Xinshiji Electrical Co., Ltd., Chongqing Address before: 400 000 No. 200 C-24-5 Keyuan Road, Jiulongpo District, Chongqing Patentee before: Chongqing New Century Electric Technology Co., Ltd. |
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