CN105391034A - Secondary protection loop system for extra high voltage (EHV) line - Google Patents
Secondary protection loop system for extra high voltage (EHV) line Download PDFInfo
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- CN105391034A CN105391034A CN201510856133.3A CN201510856133A CN105391034A CN 105391034 A CN105391034 A CN 105391034A CN 201510856133 A CN201510856133 A CN 201510856133A CN 105391034 A CN105391034 A CN 105391034A
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- lock
- breaker operation
- operation cabinet
- protective device
- signal
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- 230000004224 protection Effects 0.000 title claims abstract description 65
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims description 32
- 230000009191 jumping Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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Abstract
The application relates to a secondary protection loop system for an extra high voltage (EHV) line. The secondary protection loop system comprises a circuit breaker operation box and a first fiber distance protection device connected with the circuit breaker operation box. The circuit breaker operation box comprises a blocking autorecloser signal input end for transmitting a blocking autorecloser signal to the outside; and a remote tripping signal input end for transmitting a remote tripping command to the outside. The first fiber distance protection device comprises a start remote tripping leading-in terminal for receiving the remote tripping command transmitted by the circuit breaker operation box. The secondary protection loop system for the EHV line can be used for improving the security and stability of EHV transmission lines.
Description
Technical field
The application relates generally to field of relay protection in power, particularly a kind of loop network system tidal current computing method based on distributed power generation.
Background technology
Extra high voltage network second protection is all configured by " dual " (two cover) standard; generally adopt two unjacketed optical fiber longitudinal differential protection (accounting 30%) to run simultaneously; or vertical connection distance (or direction) protection (accounting 65%) of single unjacketed optical fiber longitudinal differential protection and single unjacketed optical fiber is run simultaneously, standard-required often overlap complete, independently protective device should be able to process contingent all types of fault.Wherein longitudinal differential protection system is it is emphasised that when between the current transformer of circuit both sides, any point breaks down; all can be instantaneous, send actuating signal reliably; control each side circuit breaker (switch) tripping operation, thus faulty line is carried out electrical isolation.In the operation of reality, also have bus and failure protection in transformer station, its protection range is part between each outgoing line interval current transformer, and it and power line main protection intersect at current transformer.Route protection, bus and failure protection all action in wire-outgoing breaker.But also there is a bit of physical distance between circuit breaker and current transformer, this section is protection's dead-zone, though in the line side of circuit breaker, not included within the scope of route protection, but within the scope of bus and failure protection.So, when this section of dead-zone fault, be rely on fault side bus and failure protection and circuit offside protection act, tripping both sides circuit breaker respectively, thus isolated fault.
For solving the problem, in prior art, usually adopt optical fiber linked differential protection scheme or optical fiber longitudinal distance protection scheme.
In optical fiber linked differential protection scheme; when generation dead-zone fault; when bus and failure protection action, it can send " tripping far away enters " signal, although longitudinal differential protection is failure to actuate to the optical fiber differential protective of corresponding interval; but this protection can send " far jumping order " by optical-fibre channel to circuit offside optical difference protection; offside first differentiates after receiving this order on the spot, then instantaneous tripping; reclosing function simultaneously in locking device, completes optical difference protection and far jumps mission.
In optical fiber longitudinal distance protection scheme, when dead-zone fault occurs in one end, when bus and failure protection action, it can to sending " other protections transmit " signal to the longitudinal distance protection of corresponding interval, although this side longitudinal distance protection is judged as reverse direction failure, but after receiving this signal, " permission trip signal " (three-phase or single-phase) can be sent immediately to the protection of circuit opposite end, circuit opposite end is when being judged as positive direction fault, have received again " permission trip signal ", protect outlet of namely tripping, isolated fault, complete light apart from protection instantaneous tripping mission.
Optical fiber linked differential protection scheme as above and optical fiber longitudinal distance protection scheme are when normal two cover protection runs, and dead-zone fault occurs in circuit side, and the fiber distance protection of opposite side needs to rely on outside to open into, locking self reclosing function.This outside locking is opened into being the order of jumping forever sent by circuit optical fiber differential protection; fiber distance protection is indirectly sent to by breaker operation cabinet; but time; when circuit optical fiber longitudinal differential protection is stopped transport; when optical fiber longitudinal distance protection list cover runs (single cover ruuning situation accounts for 0.5% of whole running time), this outside lock-reclosing lock function cannot realize.In addition, always present part fiber differential protection outputs relay without forever jumping, even if two cover protections run simultaneously, also cannot the reclosing function of the another set of protective device of locking.
Summary of the invention
Provide hereinafter about brief overview of the present invention, to provide about the basic comprehension in some of the present invention.Should be appreciated that this general introduction is not summarize about exhaustive of the present invention.It is not that intention determines key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
A main purpose of the present invention is the second protection circuit system providing a kind of new supertension line, to solve at least one technical problem as above.
According to an aspect of the present invention, a kind of second protection circuit system of supertension line, the first fiber distance protective device comprising breaker operation cabinet and be connected with breaker operation cabinet;
Wherein, breaker operation cabinet comprises:
Lock-reclosing lock signal is opened into end, for outwards sending lock-reclosing lock signal;
Jumping signal far away is opened into end, for outwards sending immediate skip far away;
First fiber distance protective device comprises startup and far jumps leading-in terminal, for receiving the immediate skip far away that breaker operation cabinet sends.
In certain embodiments, breaker operation cabinet also comprises lock-reclosing lock tripping relay group;
Wherein, lock-reclosing lock tripping relay group is opened with the instruction of lock-reclosing lock and is connected into end, opens and outwards sends the instruction of lock-reclosing lock for controlling the instruction of lock-reclosing lock into end.
In certain embodiments, breaker operation cabinet also comprises and far jumps relay;
Wherein, far away relay of jumping is opened be connected into end with signal of jumping far away, opens and outwards sends immediate skip far away for controlling far to jump signal into end.
In certain embodiments, breaker operation cabinet also comprises and allows trip command open into end and allow tripping relay group;
Wherein, allowing tripping relay group to open with permission trip command and be connected into end, outwards sending permission trip command for controlling to allow trip command to open into end.
In certain embodiments, the first fiber distance protective device also comprises tripping forever and goes out contact, and the permission trip command far away for receiving breaker operation cabinet opens the permission trip signal instruction sent into end.
In certain embodiments, the second protection circuit system of supertension line also comprises the second fiber distance protective device;
Second fiber distance protective device comprises lock-reclosing lock and opens into end, and the first fiber distance protective device also comprises teletransmission and outputs contact;
Lock-reclosing lock is opened and is outputed contact into end and teletransmission and be connected, for sending lock-reclosing lock signal instruction to the first fiber distance protective device.
In certain embodiments, breaker operation cabinet also comprises teletransmission and opens into end, for outwards sending teletransmission command signal.
First fiber distance protective device can also comprise teletransmission and output contact, and the teletransmission command signal sent into end is opened in the teletransmission for receiving breaker operation cabinet.
The second protection circuit system of supertension line of the present invention, can the reclosing function of the another set of protective device of locking, improves the safety and stability of extra high voltage network.
Accompanying drawing explanation
Below with reference to the accompanying drawings illustrate embodiments of the invention, above and other objects, features and advantages of the present invention can be understood more easily.Parts in accompanying drawing are just in order to illustrate principle of the present invention.In the accompanying drawings, same or similar technical characteristic or parts will adopt same or similar Reference numeral to represent.
Fig. 1 is the schematic diagram of the second protection circuit system of the supertension line of the embodiment of the present application;
Fig. 2 is the illustrative circuitry winding diagram of the breaker operation cabinet in Fig. 1;
Fig. 3 is the illustrative circuitry winding diagram of the first fiber distance protective device in Fig. 1;
Fig. 4 is the illustrative circuitry winding diagram of the second fiber distance protective device in Fig. 1.
Embodiment
With reference to the accompanying drawings embodiments of the invention are described.The element described in an accompanying drawing of the present invention or a kind of execution mode and feature can combine with the element shown in one or more other accompanying drawing or execution mode and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and process in illustrating.
Shown in Figure 1, be the schematic diagram of an embodiment of the second protection circuit system of the supertension line of the application.
The first fiber distance protective device 20 that the second protection circuit system of the supertension line of the present embodiment comprises breaker operation cabinet 10 and is connected with breaker operation cabinet.
Please continue see Fig. 2 and Fig. 3.Wherein, Fig. 2 shows in the second protection circuit system of the supertension line of Fig. 1, the illustrative circuitry winding diagram of breaker operation cabinet 10; Fig. 3 shows in the second protection circuit system of the supertension line of Fig. 1, the illustrative circuitry winding diagram of the first fiber distance protective device 20.
Breaker operation cabinet 10 comprises lock-reclosing lock signal and opens into end 4D182, for outwards sending lock-reclosing lock signal.And signal of jumping far away is opened into end 4D186, for outwards sending immediate skip far away.
First fiber distance protective device 20 comprises starting far jumps leading-in terminal 1X5-C20, and the jumping signal far away for receiving breaker operation cabinet 20 opens the immediate skip far away sent into end 4D186.
In some optional implementations, breaker operation cabinet 10 also comprises lock-reclosing lock tripping relay group 11.
Wherein, lock-reclosing lock tripping relay group 11 is opened with the instruction of lock-reclosing lock and is connected into end 4D182, opens into end 4D182 for controlling the instruction of lock-reclosing lock, outwards sends the instruction of lock-reclosing lock.
In some optional implementations, breaker operation cabinet 10 also comprises jumping relay 12 far away.
Jumping relay 12 far away with far jump signal and open and be connected into end 4D186, open and outwards send immediate skip far away for controlling far to jump signal into end 4D186.
In some optional implementations, breaker operation cabinet 10 also comprises permission trip command and opens into end 4D187 and allow tripping relay group 13.
Allowing tripping relay group 13 to open with permission trip command to be connected into end 4D187, outwards sending permission trip command for controlling to allow trip command to open into end 4D187.
In some optional implementations, the first fiber distance protective device 20 also comprises tripping forever and goes out contact 1X5-c24, and the permission trip command far away for receiving breaker operation cabinet 10 opens the permission trip signal instruction sent into end 4D187.
In some optional implementations, the second protection circuit system of supertension line also comprises the second fiber distance protective device 30.Shown in Figure 4, be the illustrative circuitry winding diagram of two fiber distance protective devices 30 in Fig. 1.
As shown in Figure 4, the second fiber distance protective device 30 comprises lock-reclosing lock and opens into end 1D126, and the first fiber distance protective device also comprises teletransmission and outputs contact 1X5-c26.
Lock-reclosing lock is opened and is outputed contact 1X5-c26 into end 1D126 with teletransmission and be connected, for sending lock-reclosing lock signal instruction to the first fiber distance protective device 20.
In some optional implementations, breaker operation cabinet 10 can also comprise teletransmission and open into end (not shown), for outwards sending teletransmission command signal.
First fiber distance protective device 20 can also comprise teletransmission and output contact 1X5-c12, and the teletransmission command signal sent into end is opened in the teletransmission for receiving breaker operation cabinet 10.
Above some embodiments of the present invention are described in detail.As one of ordinary skill in the art can be understood, in equipment of the present invention and method, obviously, each parts or each step reconfigure after can decomposing, combine and/or decomposing.These decompose and/or reconfigure and should be considered as equivalents of the present invention.Also it is pointed out that the step performing above-mentioned series of processes can order naturally following the instructions perform in chronological order, but do not need necessarily to perform according to time sequencing.Some step can walk abreast or perform independently of one another.Simultaneously, above in the description of the specific embodiment of the invention, the feature described for a kind of execution mode and/or illustrate can use in one or more other execution mode in same or similar mode, combined with the feature in other execution mode, or substitute the feature in other execution mode.
Should emphasize, term " comprises/comprises " existence referring to feature, key element, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, key element, step or assembly.
Although described the present invention and advantage thereof in detail, be to be understood that and can have carried out various change when not exceeding the spirit and scope of the present invention limited by appended claim, substituting and conversion.And the scope of the application is not limited only to the specific embodiment of process, equipment, means, method and step described by specification.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use perform the function substantially identical with corresponding embodiment described herein or obtain and its substantially identical result, existing and that will be developed in the future process, equipment, means, method or step according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (7)
1. a second protection circuit system for supertension line, is characterized in that, the first fiber distance protective device comprising breaker operation cabinet and be connected with described breaker operation cabinet;
Wherein, described breaker operation cabinet comprises:
Lock-reclosing lock signal is opened into end, for outwards sending lock-reclosing lock signal;
Jumping signal far away is opened into end, for outwards sending immediate skip far away;
Described first fiber distance protective device comprises startup and far jumps leading-in terminal, for receiving the immediate skip far away that described breaker operation cabinet sends.
2. the second protection circuit system of supertension line according to claim 1, is characterized in that, described breaker operation cabinet also comprises lock-reclosing lock tripping relay group;
Wherein, described lock-reclosing lock tripping relay group is opened with the instruction of described lock-reclosing lock and is connected into end, opens and outwards sends the instruction of lock-reclosing lock for controlling the instruction of described lock-reclosing lock into end.
3. the second protection circuit system of supertension line according to claim 2, is characterized in that:
Described breaker operation cabinet also comprises far jumps relay;
Wherein, described jumping relay far away is opened with described jumping signal far away and is connected into end, opens and outwards sends immediate skip far away for controlling described jumping signal far away into end.
4. the second protection circuit system of supertension line according to claim 3, is characterized in that:
Described breaker operation cabinet also comprises permission trip command and opens into end and allow tripping relay group;
Wherein, described permission tripping relay group is opened with permission trip command and is connected into end, outwards sends permission trip command for controlling to allow trip command to open into end.
5. the second protection circuit system of supertension line according to claim 4, is characterized in that:
Described first fiber distance protective device also comprises tripping forever and goes out contact, and the permission trip command described far away for receiving described breaker operation cabinet opens the permission trip signal instruction sent into end.
6. the second protection circuit system of the supertension line according to claim 1-5 any one, is characterized in that, also comprises the second fiber distance protective device;
Described second fiber distance protective device comprises lock-reclosing lock and opens into end, and described first fiber distance protective device also comprises teletransmission and outputs contact;
Described lock-reclosing lock is opened and is outputed contact into end with described teletransmission and be connected, for sending lock-reclosing lock signal instruction to described first fiber distance protective device.
7. the second protection circuit system of supertension line according to claim 6, is characterized in that:
Described breaker operation cabinet also comprises teletransmission and opens into end, for outwards sending teletransmission command signal;
Described first fiber distance protective device can also comprise teletransmission and output contact, and the teletransmission command signal sent into end is opened in the teletransmission for receiving described breaker operation cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856133.3A CN105391034A (en) | 2015-11-30 | 2015-11-30 | Secondary protection loop system for extra high voltage (EHV) line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856133.3A CN105391034A (en) | 2015-11-30 | 2015-11-30 | Secondary protection loop system for extra high voltage (EHV) line |
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| Publication Number | Publication Date |
|---|---|
| CN105391034A true CN105391034A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510856133.3A Pending CN105391034A (en) | 2015-11-30 | 2015-11-30 | Secondary protection loop system for extra high voltage (EHV) line |
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| Country | Link |
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| CN (1) | CN105391034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460010A (en) * | 2019-08-05 | 2019-11-15 | 深圳供电局有限公司 | Reclosing control method, device, line protective devices and system |
-
2015
- 2015-11-30 CN CN201510856133.3A patent/CN105391034A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460010A (en) * | 2019-08-05 | 2019-11-15 | 深圳供电局有限公司 | Reclosing control method, device, line protective devices and system |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160309 |
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| WD01 | Invention patent application deemed withdrawn after publication |