CN103779827A - Method for secondary automatic reclosing lock of extra-high voltage power transmission line - Google Patents
Method for secondary automatic reclosing lock of extra-high voltage power transmission line Download PDFInfo
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- CN103779827A CN103779827A CN201410040247.6A CN201410040247A CN103779827A CN 103779827 A CN103779827 A CN 103779827A CN 201410040247 A CN201410040247 A CN 201410040247A CN 103779827 A CN103779827 A CN 103779827A
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Abstract
The invention discloses a method for secondary automatic reclosing lock of an extra-high voltage power transmission line. The method for secondary automatic reclosing lock of the extra-high voltage power transmission line is characterized in that whether a primary reclosing lock condition and a secondary reclosing lock condition are met are judged respectively, and when the primary reclosing lock condition is not met and the secondary reclosing lock condition is met, secondary reclosing lock is started after tripping under the condition of line protection tripping. By the adoption of the technical scheme, the conditions allowing primary reclosing lock and secondary reclosing lock to coincide can be set to be different, the purpose that only the primary reclosing lock is locked and the secondary reclosing lock can act under certain conditions is achieved, and manual closing operation is replaced.
Description
Technical field
The present invention relates to a kind of extra high voltage network automatic reclosing technology, particularly the technology of secondary automatic reclosing after a kind of single shot reclosing failure.
Background technology
In the reclosing technology of supergrid transmission line, No. one time automatic reclosing refers to: after primary fault, at most only carry out an automatic closing operation.
The implementation method of an automatic reclosing is generally: when circuit normally moves, reclosing enabled condition is set to satisfied; When after line failure tripping operation, if reclosing enabled condition meets, send reclosing order through setting time delay; After reclosing order is sent, immediately reclosing enabled condition is not set to and meets, reclosing can not moved again.
Secondary automatic reclosing refers to: after an automatic reclosing failure, automatically perform closing operation one time through setting time delay again.In current supergrid, an automatic reclosing of the general employing of automatic reclosing technology of transmission line, secondary automatic reclosing uses seldom, and have problems in some situation, No. one time automatic reclosing is blocked, but wish that secondary automatic reclosing can move, replace manual closing operation, existing secondary automatic reclosing method can not meet this requirement.
Summary of the invention
Object of the present invention, is to provide a kind of extra high voltage network secondary automatic reclosing method, solves the problems referred to above that current secondary reclosing exists.
In order to reach above-mentioned purpose, solution of the present invention is: judge respectively whether single shot reclosing and secondary reclosing enabled condition meet; In the time that described single shot reclosing enabled condition is dissatisfied and described secondary reclosing enabled condition meets, if route protection tripping operation starts described secondary reclosing after tripping operation finishes.
Further, start described secondary reclosing and also comprise afterwards: differentiate according to fault signature whether catastrophe failure occurs, secondary reclosing described in locking while there is catastrophe failure.
Further, under the one and half switch modes of connection, start after described secondary reclosing and also comprise: between the secondary reclosing of first combination switch and the secondary reclosing of rear combination switch, exchange signal, realization first close with after the switching of closing.
Further, judge that single shot reclosing allows the condition overlapping whether to meet and be specially: when circuit normally moves, switch is in closing position, and without the condition of locking single shot reclosing, through time delay, put described single shot reclosing enabled condition and meet; If there is the condition of described locking single shot reclosing, or single shot reclosing order sends, and puts described single shot reclosing enabled condition and do not meet; The condition of described locking single shot reclosing arranges according to the actual requirements.
Further, judge that secondary reclosing allows the condition overlapping whether to meet and be specially: when circuit normally moves, switch is in closing position, and without the condition of locking secondary reclosing, through time delay, put described secondary reclosing enabled condition and meet; If there is the condition of described locking secondary reclosing, or the order of secondary reclosing sends, and puts described secondary reclosing enabled condition and do not meet; The condition of described locking secondary reclosing arranges according to the actual requirements.
Further, described catastrophe failure includes but not limited to following fault: (a) heterogeneous short trouble, (b) three phase short circuit fault, (c) outlet single-phase grounding fault; Described catastrophe failure is set according to the actual requirements.
Further, describedly determine catastrophe failure according to fault signature and specifically refer to: the three-phase current, the route protection trip signal that inductive switch are flow through according to the three-phase voltage of faulty line, faulty line comprehensively judge.
Further, between the secondary reclosing of described first combination switch and the secondary reclosing of rear combination switch, exchange signal, realize first close with after the switching of closing specifically refer to: the reclosing of two switches is set to respectively to first combination switch and rear combination switch, and the time delay of the secondary reclosing of described two switches is set to equate; In the time that described two switches all put into operation, after the secondary starting recloser of described first combination switch, send locking to the secondary reclosing of described rear combination switch and first close signal, make the secondary reclosing time delay of described rear combination switch increase delay time, realize in order and successively closing a floodgate; When described first combination switch is out of service, does not send described locking and first close signal, the described secondary reclosing time delay of described rear combination switch does not increase, and carries out reclosing by the time delay of described first combination switch.
In addition, the present invention also provides a kind of extra high voltage network secondary automatic reclosing method, after secondary starting recloser, differentiates according to fault signature whether catastrophe failure occurs, secondary reclosing described in locking while there is catastrophe failure.
In addition, the present invention also provides a kind of extra high voltage network secondary automatic reclosing method, under the one and half switch modes of connection, between the secondary reclosing of first combination switch and the secondary reclosing of rear combination switch, exchanges signal, realize first close with after the switching of closing.
Adopt after such scheme, single shot reclosing and secondary reclosing allow the condition overlapping can be set to different condition, realize only locking single shot reclosing of some condition, and secondary reclosing can move, and replaces manual closing operation.
Accompanying drawing explanation
Fig. 1 is that embodiment of the present invention single shot reclosing enabled condition and secondary reclosing enabled condition are differentiated logic diagram
Fig. 2 is embodiment of the present invention catastrophe failure locking secondary reclosing logic figure
Fig. 3 is the first combination switch of the embodiment of the present invention and rear combination switch secondary reclosing logic figure in order
Embodiment
Below with reference to accompanying drawing 1, technical scheme of the present invention is elaborated.
The invention provides a kind of supertension line secondary automatic reclosing method, existing secondary reclosing method is improved, allowed to meet following requirement: in (1) some situation, single shot reclosing is blocked, secondary reclosing still can move, and replaces manual closing operation; (2), under some catastrophe failure, can select locking secondary reclosing; (3) under one and half switch main wiring modes, two switches that secondary reclosing operation relates to close a floodgate according to predetermined sequencing, and first combination switch is time out of service, and the combined floodgate time delay of rear combination switch is shortened automatically.Particular content of the present invention is:
Judge respectively whether single shot reclosing and secondary reclosing enabled condition meet, in the time that described single shot reclosing enabled condition is dissatisfied and described secondary reclosing enabled condition meets, if route protection tripping operation starts described secondary reclosing after tripping operation finishes.
In addition, under some catastrophe failure, coincide with fault larger to the impact of electrical network, in order to guarantee the stability of system, wish that secondary automatic reclosing does not move.Therefore the present invention further comprises, and starts described secondary reclosing and also comprises afterwards: differentiate according to fault signature whether catastrophe failure occurs, secondary reclosing described in locking while there is catastrophe failure.
Differentiate according to fault signature whether catastrophe failure occurs, secondary reclosing described in locking while there is catastrophe failure, also can be applied to the scheme that uses other modes to differentiate secondary reclosing condition, is not limited to discriminant approach proposed by the invention.After secondary starting recloser, can carry out catastrophe failure differentiation, how to start and do not limit.
Under one and half switch main wiring modes, a closing operation relates to the combined floodgate of two switches, when secondary automatic reclosing, wishes that two switches close a floodgate according to predetermined sequencing, and when first combination switch is out of service, the secondary reclosing time delay of rear combination switch is shortened automatically.Therefore the present invention further comprises, and under the one and half switch modes of connection, starts after described secondary reclosing and also comprises: between the secondary reclosing of first combination switch and the secondary reclosing of rear combination switch, exchange signal, realization first close with after the switching of closing.
First close with after the switching of closing, also can be applied to the scheme that uses other modes to differentiate secondary reclosing condition, be not limited to discriminant approach proposed by the invention.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described.
Accompanying drawing 1 is the embodiment of the present invention, in conjunction with Fig. 1 explanation this time with the differentiation process of the enabled condition of secondary reclosing.
When circuit normally moves, switch is in closing position, and without the condition of locking single shot reclosing, through fixing time delay, puts single shot reclosing enabled condition and meet; If there is the condition of locking single shot reclosing, or single shot reclosing order sends, and puts single shot reclosing enabled condition and do not meet.
When circuit normally moves, switch is in closing position, and without the condition of locking secondary reclosing, through fixing time delay, puts secondary reclosing enabled condition and meet; If there is the condition of locking secondary reclosing, or the order of secondary reclosing sends, and puts secondary reclosing enabled condition and do not meet.
The condition of the condition of locking single shot reclosing and locking secondary reclosing can arrange respectively according to demand, can be identical, and also can be different.
How 2 embodiment explanation differentiates according to fault signature whether catastrophe failure occurs by reference to the accompanying drawings, secondary reclosing described in locking while there is catastrophe failure.
Catastrophe failure can include but not limited to following several fault: (a) heterogeneous short trouble, (b) three phase short circuit fault, (c) outlet single-line to ground fault.Wherein, (a) comprise (b), heterogeneous short trouble comprises three phase short circuit fault.
Described catastrophe failure can arrange according to the actual requirements, for example, catastrophe failure can be set and comprise above-mentioned (a), determining fault type when (a), thinks generation catastrophe failure, otherwise thinks catastrophe failure does not occur.
If select catastrophe failure locking secondary reclosing, determining after generation catastrophe failure, put secondary reclosing enabled condition and do not meet, realize the locking to secondary reclosing; If select not locking of catastrophe failure secondary reclosing, determine after catastrophe failure, can not exert an influence to secondary reclosing enabled condition.As shown in Figure 2.
For the differentiation of catastrophe failure, three-phase current, the route protection trip signal etc. that can flow through inductive switch according to the three-phase voltage of faulty line, faulty line comprehensively judge, concrete determination methods can arrange according to demand.For example, catastrophe failure is set and comprises above-mentioned (a), differentiate the method for catastrophe failure and can be: if a certain phase current magnitude is greater than the threshold value of setting, and voltage magnitude is less than the threshold value of setting, and differentiating this is fault phase mutually; If the three-phase current amplitude of certain two-phase is greater than the threshold value of setting, and voltage between phases amplitude is less than the threshold value of setting, and differentiating this two-phase is fault phase; If have two-phase or three-phase to be identified as fault phase, think and catastrophe failure occurs heterogeneous short trouble.Above-mentioned method of discrimination just illustrates, and actual method of discrimination is not limited to said method.
3 embodiment explanations, under the one and half switch modes of connection, exchange signal between the secondary reclosing of first combination switch and the secondary reclosing of rear combination switch by reference to the accompanying drawings, automatic realization first close with after the switching of closing.
Arrange by parameter, the reclosing of two switches is set to respectively to first combination switch and rear combination switch, the time delay of two switch secondary reclosings is set to equate.In the time that two switches all put into operation, after the secondary starting recloser of first combination switch, the secondary reclosing of combination switch sends locking and first closes signal backward; The secondary reclosing of rear combination switch receives that locking first closes after signal, and the time delay of secondary reclosing increases regular time (length of this set time can arrange).The actual reclosing time delay of first combination switch equals the reclosing time delay arranging, and the reclosing time delay of rear combination switch is the time delay of closing increase after the reclosing time delay of setting adds; When first combination switch is out of service, can send locking and first close signal, the secondary reclosing time delay of rear combination switch does not increase, by after close to be automatically converted to first and close.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposing according to the present invention, and any change of doing on technical scheme basis, within all falling into protection range of the present invention.
Claims (10)
1. an extra high voltage network secondary automatic reclosing method, is characterized in that: judge respectively whether single shot reclosing and secondary reclosing enabled condition meet; In the time that described single shot reclosing enabled condition is dissatisfied and described secondary reclosing enabled condition meets, if route protection tripping operation starts described secondary reclosing after tripping operation finishes.
2. extra high voltage network secondary automatic reclosing method as claimed in claim 1, it is characterized in that: after the described secondary reclosing of described startup, also comprise: differentiate according to fault signature whether catastrophe failure occurs, secondary reclosing described in locking while there is catastrophe failure.
3. extra high voltage network secondary automatic reclosing method as claimed in claim 1, it is characterized in that: under the one and half switch modes of connection, also comprise after the described secondary reclosing of described startup: between the secondary reclosing of first combination switch and the secondary reclosing of rear combination switch, exchange signal, realization first close with after the switching of closing.
4. extra high voltage network secondary automatic reclosing method as claimed in claim 1, it is characterized in that described whether satisfied being specially of condition that judges that single shot reclosing permission overlaps: when circuit normally moves, switch is in closing position, and without the condition of locking single shot reclosing, through time delay, put described single shot reclosing enabled condition and meet; If there is the condition of described locking single shot reclosing, or single shot reclosing order sends, and puts described single shot reclosing enabled condition and do not meet; The condition of described locking single shot reclosing arranges according to the actual requirements.
5. extra high voltage network secondary automatic reclosing method as claimed in claim 1, it is characterized in that described whether satisfied being specially of condition that judges that the permission of secondary reclosing overlaps: when circuit normally moves, switch is in closing position, and without the condition of locking secondary reclosing, through time delay, put described secondary reclosing enabled condition and meet; If there is the condition of described locking secondary reclosing, or the order of secondary reclosing sends, and puts described secondary reclosing enabled condition and do not meet; The condition of described locking secondary reclosing arranges according to the actual requirements.
6. a kind of extra high voltage network secondary automatic reclosing method as claimed in claim 2, it is characterized in that described catastrophe failure includes but not limited to following fault: (a) heterogeneous short trouble, (b) three phase short circuit fault, (c) outlet single-phase grounding fault; Described catastrophe failure is set according to the actual requirements.
7. a kind of extra high voltage network secondary automatic reclosing method as claimed in claim 2, is characterized in that describedly determining catastrophe failure according to fault signature and specifically referring to: the three-phase current, the route protection trip signal that inductive switch are flow through according to the three-phase voltage of faulty line, faulty line comprehensively judge.
8. a kind of extra high voltage network secondary automatic reclosing method as described in claim 3 or 5, it is characterized in that exchanging signal between the secondary reclosing of described first combination switch and the secondary reclosing of rear combination switch, realize first close with after the switching of closing specifically refer to: the reclosing of two switches is set to respectively to first combination switch and rear combination switch, and the time delay of the secondary reclosing of described two switches is set to equate; In the time that described two switches all put into operation, after the secondary starting recloser of described first combination switch, send locking to the secondary reclosing of described rear combination switch and first close signal, make the secondary reclosing time delay of described rear combination switch increase delay time, realize in order and successively closing a floodgate; When described first combination switch is out of service, does not send described locking and first close signal, the described secondary reclosing time delay of described rear combination switch does not increase, and carries out reclosing by the time delay of described first combination switch.
9. an extra high voltage network secondary automatic reclosing method, is characterized in that: after secondary starting recloser, differentiate according to fault signature whether catastrophe failure occurs, secondary reclosing described in locking while there is catastrophe failure.
10. an extra high voltage network secondary automatic reclosing method, is characterized in that: under the one and half switch modes of connection, between the secondary reclosing of first combination switch and the secondary reclosing of rear combination switch, exchange signal, realize first close with after the switching of closing.
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| CN201410040247.6A CN103779827B (en) | 2014-01-27 | 2014-01-27 | Method for secondary automatic reclosing lock of extra-high voltage power transmission line |
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| CN201410040247.6A CN103779827B (en) | 2014-01-27 | 2014-01-27 | Method for secondary automatic reclosing lock of extra-high voltage power transmission line |
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| CN103779827B CN103779827B (en) | 2017-01-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104466926A (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | Feeder automation system parameter setting method suitable for distributed power source connection |
| CN104882865A (en) * | 2015-05-20 | 2015-09-02 | 国家电网公司 | Device used for preventing secondary reclosing in line reclosing |
| CN106684812A (en) * | 2017-02-17 | 2017-05-17 | 国网山东省电力公司威海供电公司 | Device and method for achieving reclosing non-voltage check |
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| CN102106052A (en) * | 2008-08-29 | 2011-06-22 | Abb研究有限公司 | Method and apparatus for fault identification in a power transmission line |
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| SU1545280A1 (en) * | 1987-10-23 | 1990-02-23 | Всесоюзный Государственный Проектно-Изыскательский И Научно-Исследовательский Институт Энергетических Систем И Электрических Сетей "Энергосетьпроект" | Method of automatic reconnection of ultra-high voltage power transmission line |
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| CN102106052A (en) * | 2008-08-29 | 2011-06-22 | Abb研究有限公司 | Method and apparatus for fault identification in a power transmission line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466926A (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | Feeder automation system parameter setting method suitable for distributed power source connection |
| CN104882865A (en) * | 2015-05-20 | 2015-09-02 | 国家电网公司 | Device used for preventing secondary reclosing in line reclosing |
| CN104882865B (en) * | 2015-05-20 | 2017-07-25 | 国家电网公司 | It is a kind of to be used to prevent the device of secondary coincidence in circuit re-switching |
| CN106684812A (en) * | 2017-02-17 | 2017-05-17 | 国网山东省电力公司威海供电公司 | Device and method for achieving reclosing non-voltage check |
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| CN103779827B (en) | 2017-01-11 |
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