CN103701207A - Method for preventing misoperation of SV soft strap with current gap - Google Patents
Method for preventing misoperation of SV soft strap with current gap Download PDFInfo
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- CN103701207A CN103701207A CN201310589377.0A CN201310589377A CN103701207A CN 103701207 A CN103701207 A CN 103701207A CN 201310589377 A CN201310589377 A CN 201310589377A CN 103701207 A CN103701207 A CN 103701207A
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Abstract
The invention discloses a method for preventing misoperation of a SV soft strap with a current gap. The method comprises the following steps: setting a data structure of a sampling channel, wherein channel statuses controlled by the SV soft strap are stored in the data structure of the sampling channel correspondingly one by one according to link numbers; and when the SV soft strap is operated, correspondingly recognizing the SV soft strap and a channel controlled by the SV soft strap firstly and then judging whether the channel controlled by the SV soft strap has current, if not, exiting operation of the SV soft strap is directly allowed, and if so, whether the further operation is performed is determined after confirmation. The method is applicable to a relay protection device in an intelligent substation; and in the method, the SV soft strap of the channel is automatically recognized and whether the channel corresponding to the SV soft strap has current is judged, so that the misoperation of the SV soft strap with the current gap is prevented and the running safety of a system is improved.
Description
Technical field
The invention belongs to Relay Protection Technology in Power System field, be specifically related to a kind of method that prevents the soft pressing plate misoperation of stream interval SV.
Background technology
Protective relaying device is the important component part of electric power system, and it plays very important effect to guaranteeing system safety operation.It excises faulty equipment, system safety operation is contributed when system breaks down, and the incorrect operation of relaying protection or the harm that normal operational system is caused out of service are also huge.
The a large amount of settings that reduce hard pressing plate of intelligent substation, only having maintenance pressing plate is hard pressing plate, protective device extensively adopts soft pressing plate.Soft pressing plate is for hard pressing plate, and traditional protection is used firmly in flakes so is called hard pressing plate, and soft pressing plate is to utilize on this basis software logic strengthening function to be thrown to the control of moving back and export signal, with hard pressing plate be " with " relation.Soft pressing plate refers to that certain function of software systems is thrown and moves back, such as dropping into and exit certain protection and controlling function.Conventionally to revise the software control word of Microcomputer Protection, realize.In intelligent substation, due to the networking in the loops such as signal, control, hard pressing plate also just disappears along with the disappearance of cable loop, and the function of soft pressing plate is strengthened greatly, and importance also promotes thereupon.
The major function of the soft pressing plate of SV (the soft pressing plate of data receiver) is to control whether reception & disposal sampled data of local terminal by MU input state.Intelligent substation protective relaying device analog input requires a MU that a SV pressing plate is set, and this pressing plate function is as follows:
1) when SV receives soft pressing plate input, the sampled value in this link just participation protective is calculated, otherwise participation protective calculating is not shown as 0 simultaneously;
2) when SV receives soft pressing plate and drops into, this Link State is detected, comprise that chain rupture, step-out and reception do not mate;
3) when SV receives soft pressing plate and drops into, to this link comprise sampling carry out quality abnormal, overhaul inconsistent, two AD inconsistent, exchange and break and the differentiation that exchanges inverted sequence.
SV receives soft pressing plate and is equivalent to the line switch between current transformer in the past and the little CT of protection, does not normally operate.In intelligent substation, when overhaul monospace in main transformer protection, bus protection etc. are protected across interval, need to exit corresponding interval SV and receive pressing plate, to isolate maintenance interval; The route protection of 3/2 wiring, middle circuit breaker CT, limit circuit breaker CT, through different MU access protections, when single CT or switch maintenance, need to exit corresponding interval SV and receive pressing plate.
For protecting across interval, as bus protection, the interval relating to is more; and consider the problem of Enlargement engineering; SV pressing plate is relatively many, due to the problem of operational management or operating personnel's misoperation, likely the SV that moves interval is received to soft pressing plate misoperation.
The misoperation of the soft pressing plate of SV, will cause the undesired input of defencive function or exit, and can cause differential protection misoperation, very harmful to electric power system.The basic principle of differential protection is Kirchhoff's current law (KCL), and in circuit on any node, at any one time, the electric current sum that flows into node equals to flow out the electric current sum of node.When miscarrying into or exiting by mistake due to the misoperation of SV pressing plate if any stream interval, will destroy such equilibrium relation, cause poor stream protection misoperation, the harm of causing to normal operational system.Therefore, need to take measures to prevent this type of misoperation, improve security of system.
Summary of the invention
The object of this invention is to provide a kind of method that prevents the soft pressing plate misoperation of stream interval SV, problem system being worked the mischief to solve its misoperation.
In order to realize above object, the technical solution adopted in the present invention is: a kind of method that prevents the soft pressing plate misoperation of stream interval SV, the method comprises the steps:
(1) set the data structure of sampling channel, in this sampling channel data structure according to the link No. channel status that the soft pressing plate of corresponding stored SV is controlled one by one;
(2) when the soft pressing plate of operation SV, first the passage of the soft pressing plate of SV and its control is carried out to correspondence identification, then judge that whether the passage that the soft pressing plate of SV is controlled has stream, if without stream, directly allows the throwing of pressing plate to move back operation; If there is stream, need after confirming, to determine whether again to continue operation.
In described step (2), the passage of the soft pressing plate of SV and its control is carried out to the process of corresponding identification as follows: read the link No. in sampling channel data structure, according to link No., determine the passage that this soft pressing plate is corresponding.
In described step (2), judge whether this passage has the formula of stream as follows: Max{I (k) } >0.04In, wherein, I (k) is the channel current amplitude that all SV pressing plates are controlled, In is rated current.
The present invention prevents that the method for the soft pressing plate misoperation of stream interval SV is applied in intelligent substation protective relaying device; the soft pressing plate of passage SV is adopted to automatic RM; differentiate the passage that the soft pressing plate of this SV is corresponding and whether have electric current; to have prevented stream interval SV pressing plate misoperation, improve system safety in operation.
Accompanying drawing explanation
Fig. 1 is the flow chart of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the flow chart that the present invention prevents the embodiment of the method for the soft pressing plate misoperation of stream interval SV, as seen from the figure, the method comprises the steps:
(1) set the data structure of sampling channel, in this sampling channel data structure according to the link No. channel status that the soft pressing plate of corresponding stored SV is controlled one by one; The corresponding SV link 1 of the soft pressing plate of SV1, the corresponding SV link 2 of the soft pressing plate of SV2 ... the like.
(2) when the soft pressing plate of operation SV, first the passage of the soft pressing plate of SV and its control is carried out to correspondence identification, then judge that whether the passage that the soft pressing plate of SV is controlled has stream, if without stream, directly allows the throwing of pressing plate to move back operation; If there is stream, need after confirming, to determine whether again to continue operation, to reach the object that prevents stream interval misoperation.
In the present embodiment, the passage of the soft pressing plate of SV and its control is carried out to the process of corresponding identification as follows: the state global variable of the soft pressing plate of application SV, the throwing unloading device of the soft pressing plate of all SV is merged into 2 32 unsigned numbers in real time and (consider maximum 32 elements of 110kV bus, 1 32 figure place is not enough), or the soft pressing plate state of all SV is inputted in an array in order, read the SV link No. in sampling channel data structure, according to link No., the soft pressing plate of SV and corresponding passage thereof is corresponding, realize the soft pressing plate of passage SV and automatically identify.
Judge whether corresponding passage has the formula of stream as follows: Max{I (k) } >0.04In, wherein, I (k) is the channel current amplitude that the soft pressing plate of all SV is controlled, In is rated current.
Specific implementation process is as follows:
1) the newly-increased soft pressing plate of SV of the interface menu of adjusting, the sign that the state that menu comprises the soft pressing plate of SV and whether allowing is revised, menu structure is as follows:
2) enter the soft pressing plate of the SV menu of adjusting, " pressing plate allows operation discriminant function " in invokes application, reads this locking sign at every turn.No. ID of comprising pressing plate of the parameter of function input, whether return value allows modification state for this pressing plate, this state assignment in program, whether differentiation SV platen passageway has stream, has stream to put locking sign.Menu automatically changes all pressing plates into and does not allow to revise when exiting.
3) as being masked as 1(, locking allows be masked as " * " of revising), do not allow directly to revise soft pressing plate, for unchangeable pressing plate, by cursor movement to this pressing plate, by acknowledgement key, eject and force to allow to revise menu is set, program ejects after the prompting list of " be separated with stream, whether allow operation " and reaffirms just and can carry out the operation of soft pressing plate.Menu structure as follows as shown, is selected after ACK button, allows modification state to be forced to permission, is shown as √, and this pressing plate allows to throw and moves back.
4) pressing plate that permission is revised can directly be thrown and move back operation, inoperative by acknowledgement key.
Claims (3)
1. a method that prevents the soft pressing plate misoperation of stream interval SV, is characterized in that, the method comprises the steps:
(1) set the data structure of sampling channel, in this sampling channel data structure according to the link No. channel status that the soft pressing plate of corresponding stored SV is controlled one by one;
(2) when the soft pressing plate of operation SV, first the passage of the soft pressing plate of SV and its control is carried out to correspondence identification, then judge that whether the passage that the soft pressing plate of SV is controlled has stream, if without stream, directly allows the throwing of pressing plate to move back operation; If there is stream, need after confirming, to determine whether again to continue operation.
2. the method that prevents stream interval SV soft pressing plate misoperation according to claim 1, it is characterized in that: in described step (2), the passage of the soft pressing plate of SV and its control is carried out to the process of corresponding identification as follows: read the link No. in sampling channel data structure, according to link No., determine the passage that this soft pressing plate is corresponding.
3. according to the method that prevents the soft pressing plate misoperation of stream interval SV described in claim 1 or 2 any one, it is characterized in that: in described step (2), judge whether this passage has the formula of stream as follows: Max{I (k) >0.04In, wherein, I (k) is the channel current amplitude that all SV pressing plates are controlled, and In is rated current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589377.0A CN103701207A (en) | 2013-11-19 | 2013-11-19 | Method for preventing misoperation of SV soft strap with current gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589377.0A CN103701207A (en) | 2013-11-19 | 2013-11-19 | Method for preventing misoperation of SV soft strap with current gap |
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| CN103701207A true CN103701207A (en) | 2014-04-02 |
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| CN201310589377.0A Pending CN103701207A (en) | 2013-11-19 | 2013-11-19 | Method for preventing misoperation of SV soft strap with current gap |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852469A (en) * | 2015-05-07 | 2015-08-19 | 国家电网公司 | Equipment real-time status-based smart substation soft strap remote anti-misoperation method |
| CN105186698A (en) * | 2015-10-31 | 2015-12-23 | 南京南瑞继保电气有限公司 | Method for improving reliability of operational overhaul of transformer substation |
| CN106787171A (en) * | 2016-11-28 | 2017-05-31 | 国网江苏省电力公司检修分公司 | It is a kind of to prevent from being spaced the method that the soft pressing plate miscarryings of SV are moved back |
| CN109245300A (en) * | 2018-09-29 | 2019-01-18 | 国网湖北省电力有限公司检修公司 | A kind of 500kV intelligent substation pressing plate automatic Check method |
| CN111711269A (en) * | 2020-06-05 | 2020-09-25 | 广东电网有限责任公司 | Soft pressing plate state control method, device, equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100060017A1 (en) * | 2008-09-09 | 2010-03-11 | Mitsubishi Electric Corporation | Protection and control system |
| CN103280776A (en) * | 2013-05-20 | 2013-09-04 | 南京国电南自电网自动化有限公司 | Method for preventing incorrect operation of differential protection device |
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2013
- 2013-11-19 CN CN201310589377.0A patent/CN103701207A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100060017A1 (en) * | 2008-09-09 | 2010-03-11 | Mitsubishi Electric Corporation | Protection and control system |
| CN103280776A (en) * | 2013-05-20 | 2013-09-04 | 南京国电南自电网自动化有限公司 | Method for preventing incorrect operation of differential protection device |
Non-Patent Citations (1)
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| 胡绍谦等: "数字化变电站的间隔层连锁扩建方案研究", 《电力系统保护与控制》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852469A (en) * | 2015-05-07 | 2015-08-19 | 国家电网公司 | Equipment real-time status-based smart substation soft strap remote anti-misoperation method |
| CN105186698A (en) * | 2015-10-31 | 2015-12-23 | 南京南瑞继保电气有限公司 | Method for improving reliability of operational overhaul of transformer substation |
| CN106787171A (en) * | 2016-11-28 | 2017-05-31 | 国网江苏省电力公司检修分公司 | It is a kind of to prevent from being spaced the method that the soft pressing plate miscarryings of SV are moved back |
| CN106787171B (en) * | 2016-11-28 | 2019-06-11 | 国网江苏省电力有限公司检修分公司 | A method of prevent interval SV soft pressing plate miscarrying from moving back |
| CN109245300A (en) * | 2018-09-29 | 2019-01-18 | 国网湖北省电力有限公司检修公司 | A kind of 500kV intelligent substation pressing plate automatic Check method |
| CN111711269A (en) * | 2020-06-05 | 2020-09-25 | 广东电网有限责任公司 | Soft pressing plate state control method, device, equipment and storage medium |
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Application publication date: 20140402 |