CN104407525A - Time relay and circuit breaker three-phase inconsistent protection circuit and circuit breaker - Google Patents
Time relay and circuit breaker three-phase inconsistent protection circuit and circuit breaker Download PDFInfo
- Publication number
- CN104407525A CN104407525A CN201410535482.0A CN201410535482A CN104407525A CN 104407525 A CN104407525 A CN 104407525A CN 201410535482 A CN201410535482 A CN 201410535482A CN 104407525 A CN104407525 A CN 104407525A
- Authority
- CN
- China
- Prior art keywords
- operational module
- controlling vertex
- time relay
- lead
- out terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/267—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
Abstract
The application discloses a time relay. The working modules of the time relay comprise first, second and third working modules which are connected in parallel. Each working module comprises two control nodes. Three branches are formed among the nodes of the three working modules via the logic of "selecting two from three". When a certain working module fails to work or operates falsely, the branches formed by the modes of other two working modules can still reliably operate continuously according to the preset time delay so that reliability of the relay is enhanced.
Description
Technical field
The application relates to Relay Protection Technology in Power System field, more particularly, relates to a kind of time relay and isolating switch three phases un identical protection circuit and isolating switch.
Background technology
The time relay, as automatic control device, is widely used in relay protection of power system and Automated condtrol loop.In recent years, along with more and more higher to the reliability requirement of equipment and system, the problem that time relay reliability is not high shows especially out gradually.Find by analyzing, the inner member of the time relay is of low quality, is cause one of key factor that time relay reliability is not high.
Therefore, how to provide the time relay that a kind of unfailing performance is high, become one of those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the application provides a kind of time relay, for solving the low problem of time relay reliability of the prior art.
To achieve these goals, the existing scheme proposed is as follows:
A kind of time relay, comprise: first, second starts terminal, first, second lead-out terminal, be arranged on the operational module between first, second startup terminal described, the Controlling vertex of described operational module is arranged between first, second lead-out terminal described, wherein, described operational module comprises:
First operational module in parallel, the second operational module and the 3rd operational module;
The Controlling vertex of the described first to the 3rd operational module includes: the first Controlling vertex and the second Controlling vertex;
One end of first Controlling vertex of described first operational module is connected with the first lead-out terminal, and the other end is connected with described second lead-out terminal by the first Controlling vertex of the second operational module;
One end of second Controlling vertex of described second operational module is connected with the first lead-out terminal, and the other end is connected with described second lead-out terminal by the first Controlling vertex of the 3rd operational module;
One end of second Controlling vertex of described first operational module is connected with the first lead-out terminal, and the other end is connected with described second lead-out terminal by the second Controlling vertex of the 3rd operational module.
Preferably, in the above-mentioned time relay, the normal-closed end of first, second Controlling vertex of described first operational module is connected with the first lead-out terminal; The Chang Kaiduan of first, second Controlling vertex of described 3rd operational module is connected with the second lead-out terminal; The Chang Kaiduan of the first Controlling vertex of described second operational module is connected with the second lead-out terminal, the normal-closed end of the second Controlling vertex is connected with the first lead-out terminal.
Preferably, in the above-mentioned time relay, the first Controlling vertex of each operational module and the interlock of the second Controlling vertex.
A kind of three phases un identical protection circuit, is applied in isolating switch, comprises: the time relay disclosed in above-mentioned any one.
A kind of isolating switch, comprising: above-mentioned disclosed three phases un identical protection circuit device.
As can be seen from above-mentioned technical scheme, operational module in relay disclosed in the present application comprises the first to the 3rd operational module in parallel, and each operational module has two Controlling vertex, and between the Controlling vertex of these three operational modules, adopt " three select two " logic to form three branch roads, therefore, when wherein certain operational module lost efficacy or misoperation time other two operational modules the branch road that formed of node still can continue according to presetting time delay action message, thus enhance the reliability of relay.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural drawing of the operational module of the time relay that Fig. 1 provides for the application;
The structural drawing of Fig. 2 a kind of unbalanced three-phase lines circuit disclosed in the embodiment of the present application.
Embodiment
Be directed to the problem that the reliability of the time relay in prior art is not strong, this application discloses a kind of time relay adopting " three get two " logic.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The structural drawing of the operational module of the time relay that Fig. 1 provides for the application.
Application literary composition finds after deliberation, insecure problem of the time relay described in prior art is all generally because the operational module inefficacy in the time relay or misoperation cause, when after described operational module inefficacy or misoperation, the described time relay can be caused unreliable, therefore applicant provide a kind of operational module adopt " three get two " logical design, not easily to lose efficacy or the time relay of misoperation.
See Fig. 1, wherein empty frame part is the operational module 100 of the time relay disclosed in the present application, wherein, 1 represents first of the described time relay starts terminal, 2 represent second of the described time relay starts terminal, 3 the first lead-out terminals representing the described time relay, 4 the second lead-out terminals representing the described time relay, described operational module 100 is arranged on described first, second and starts between terminal, the Controlling vertex of described operational module 100 is arranged between first, second lead-out terminal described, concrete, described operational module 100 can comprise:
First operational module A parallel with one another, the second operational module B and the 3rd operational module C;
The Controlling vertex of the described first to the 3rd operational module includes two Controlling vertex;
One end of the first Controlling vertex a1 of described first operational module A is connected with the first lead-out terminal 1, and the other end is connected with described second lead-out terminal 2 by the first Controlling vertex b1 of the second operational module B;
One end of the second Controlling vertex b2 of described second operational module B is connected 3 with the first lead-out terminal, and the other end is connected with described second lead-out terminal 4 by the first Controlling vertex c1 of the 3rd operational module C;
One end of the second Controlling vertex a2 of described first operational module A is connected with the first lead-out terminal 1, and the other end is connected with described second lead-out terminal 4 by the second Controlling vertex c2 of the 3rd operational module C.
Wherein, described first control contact and described second Controlling vertex can be considered as on the Controlling vertex of original operational module, arrange a Controlling vertex, and the control mode of these two Controlling vertex is identical.
When the time relay disclosed in the embodiment of the present application works, if when the inefficacy of certain operational module of the lifting in the described time relay or misoperation, such as Controlling vertex a1 lost efficacy or misoperation, the branch road now formed by the Controlling vertex b2 of described second operational module and the Controlling vertex c1 of described 3rd operational module still continues to play control action, therefore, the described time relay still can regular event.Visible, compared to the time relay of the prior art, the application adopts the time relay of " three select two " logical design to have stronger reliability.
Be understandable that, in order to ensure personal safety when user carries out wiring to the described time relay or keeps in repair, the application has also made further restriction to the concrete mode of connection of first, second Controlling vertex described, is specially: the first Controlling vertex a1 of described first operational module A, the normal-closed end of the second Controlling vertex a2 are connected with the first lead-out terminal 3; The first Controlling vertex c1 of described 3rd operational module C, the Chang Kaiduan of the second Controlling vertex c2 are connected with the second lead-out terminal 4; The Chang Kaiduan of the first Controlling vertex b1 of described second operational module B is connected with the second lead-out terminal 4, the normal-closed end of the second Controlling vertex b2 is connected with the first lead-out terminal 3.
Be understandable that, conveniently control described first Controlling vertex and the second Controlling vertex, the application can be able to adopt linked manner to control to two Controlling vertex belonging to same operational module.
The structural drawing of Fig. 2 a kind of unbalanced three-phase lines circuit disclosed in the embodiment of the present application.
In electric system, the unbalanced three-phase lines circuit that isolating switch mainly relies on the time relay to form controls described isolating switch, the unbalanced three-phase lines control circui isolating switch consisted of the described time relay carries out trip protection, if when the time relay lost efficacy, directly will have influence on the successful of isolating switch reclosing, and likely cause isolating switch to protect to lose with other and coordinate, and then cause large power grid accident, therefore the reliability of described unbalanced three-phase lines circuit is most important, in described unbalanced three-phase lines circuit, its major control effect is the time relay, therefore, disclosed herein as well is a kind of isolating switch unbalanced three-phase lines circuit applying the time relay disclosed in the above embodiments of the present application, described unbalanced three-phase lines circuit application is in isolating switch.See Fig. 2, the above-mentioned unbalanced three-phase lines circuit of the application comprises: starting-up later time 200 and trip(ping) circuit 300, the time relay in wherein said NKT embodiment disclosed in the above embodiments of the present application.
Certainly, corresponding to described unbalanced three-phase lines circuit, disclosed herein as well is a kind of isolating switch applying described unbalanced three-phase lines circuit.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a time relay, comprise: first, second starts terminal, first, second lead-out terminal, be arranged on the operational module between first, second startup terminal described, the Controlling vertex of described operational module is arranged between first, second lead-out terminal described, it is characterized in that, described operational module comprises:
First operational module in parallel, the second operational module and the 3rd operational module;
The Controlling vertex of the described first to the 3rd operational module includes: the first Controlling vertex and the second Controlling vertex;
One end of first Controlling vertex of described first operational module is connected with the first lead-out terminal, and the other end is connected with described second lead-out terminal by the first Controlling vertex of the second operational module;
One end of second Controlling vertex of described second operational module is connected with the first lead-out terminal, and the other end is connected with described second lead-out terminal by the first Controlling vertex of the 3rd operational module;
One end of second Controlling vertex of described first operational module is connected with the first lead-out terminal, and the other end is connected with described second lead-out terminal by the second Controlling vertex of the 3rd operational module.
2. the time relay according to claim 1, is characterized in that, comprising:
The normal-closed end of first, second Controlling vertex of described first operational module is connected with the first lead-out terminal; The Chang Kaiduan of first, second Controlling vertex of described 3rd operational module is connected with the second lead-out terminal; The Chang Kaiduan of the first Controlling vertex of described second operational module is connected with the second lead-out terminal, the normal-closed end of the second Controlling vertex is connected with the first lead-out terminal.
3. the time relay according to claim 1, is characterized in that, comprising:
First Controlling vertex of each operational module and the interlock of the second Controlling vertex.
4. a three phases un identical protection circuit, is applied in isolating switch, it is characterized in that, comprising: the time relay disclosed in claim 1-3 any one.
5. an isolating switch, is characterized in that, comprising: the three phases un identical protection circuit device in claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535482.0A CN104407525A (en) | 2014-10-11 | 2014-10-11 | Time relay and circuit breaker three-phase inconsistent protection circuit and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535482.0A CN104407525A (en) | 2014-10-11 | 2014-10-11 | Time relay and circuit breaker three-phase inconsistent protection circuit and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104407525A true CN104407525A (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410535482.0A Pending CN104407525A (en) | 2014-10-11 | 2014-10-11 | Time relay and circuit breaker three-phase inconsistent protection circuit and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104407525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959280A (en) * | 2017-12-28 | 2018-04-24 | 贵州电网有限责任公司 | A kind of breaker body three phases un identical protection circuit and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570872U (en) * | 2009-12-10 | 2010-09-01 | 贵州电力试验研究院 | Two-out-of-three logic circuit of generator parallel signals |
| CN203787951U (en) * | 2014-04-11 | 2014-08-20 | 国家电网公司 | Three-phase inconsistent protective circuit of circuit breaker |
-
2014
- 2014-10-11 CN CN201410535482.0A patent/CN104407525A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570872U (en) * | 2009-12-10 | 2010-09-01 | 贵州电力试验研究院 | Two-out-of-three logic circuit of generator parallel signals |
| CN203787951U (en) * | 2014-04-11 | 2014-08-20 | 国家电网公司 | Three-phase inconsistent protective circuit of circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959280A (en) * | 2017-12-28 | 2018-04-24 | 贵州电网有限责任公司 | A kind of breaker body three phases un identical protection circuit and control method |
| CN107959280B (en) * | 2017-12-28 | 2023-06-16 | 贵州电网有限责任公司 | Three-phase inconsistent protection circuit of circuit breaker body |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |