CN106329493B - The region distance in adaptive locking domain protects system - Google Patents
The region distance in adaptive locking domain protects system Download PDFInfo
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- CN106329493B CN106329493B CN201510334378.XA CN201510334378A CN106329493B CN 106329493 B CN106329493 B CN 106329493B CN 201510334378 A CN201510334378 A CN 201510334378A CN 106329493 B CN106329493 B CN 106329493B
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Abstract
The invention discloses a kind of region distances in adaptive locking domain to protect system, fault identification module：It identifies the failure of each electrical equipment in substation and is output to topological identification module；Topological identification module：Each line segregation region distance of self-adapting estimation protects corresponding locking domain, forms the corresponding region block signal of each line segregation region distance；Communication module：Each line segregation region block signal that our station topology identification module exports is sent to the substation of each line segregation offside；And the region block signal that each line segregation offside substation sends is received, output gives this side each line segregation region distance module；Region distance module：Line fault for identification.This invention simplifies the configuration works of region distance protection, adapt to the variation of the various methods of operation, improve engineering construction efficiency, it is ensured that the power supply reliability of power grid entirety.
Description
Technical field
The present invention relates to electric power network technique fields, and system is protected more particularly to the region distance in adaptive locking domain.
Background technology
The locality protection of electric system at present has a small amount of implementation in each area.Since locality protection can combine entire piece
Information in net makes more optimized decision, and foreground is very bright.
In locality protection, there is a kind of fast area distance protection, the movement speed of protection can be greatly improved, and
It is applied through input.Method in relation to fast area distance protection can refer to that " 201310180944.7 a kind of are believed based on regional power grid
The fast area distance relay of breath ".The basic thought of fast area distance protection is that land judges apart from impedor
It is out of order, and does not receive the region block signal of circuit offside substation, then it can be with fast trip.Its engineering implemented is difficult
It puts and is how to obtain the region block signal for all elements that circuit offside is connected.Implementing fast area distance protection
During, since the structure of each substation is mostly different, cause the configuration of region block signal extremely complex, and easily by
The influence of system operation mode leads to engineering inefficiency, and is not easy to promote.
Invention content
The present invention proposes that the region distance in adaptive locking domain protects system, is become by topological identification module self-adapting estimation
Power station network topology, the online locking domain generated by line segregation, summarizes the region block signal by line segregation automatically, simplifies
Engineering configures, and is not influenced by system operation mode, substantially increases engineering efficiency.
In order to achieve the above objectives, embodiment of the present invention is：The region distance in adaptive locking domain protects system, special
Sign is:Including fault identification module, topological identification module, communication module and region distance module：
Fault identification module：Identify the failure of each electrical equipment in substation, and the fault message that will identify that is output to
The input of topological identification module；
Topological identification module：Each line segregation region distance of self-adapting estimation protects corresponding locking domain, forms each circuit
Interval region is apart from corresponding region block signal；The self-adapting estimation of the topology identification module comprises the concrete steps that：
(1) each electrical equipment relevant branch isolation switch position in substation and position of the switch access topology are identified into mould
Block, topological identification module is according to the presence of branch isolation switch position and the position of the switch and the main electrical scheme side adjusted
Formula, self-adapting estimation substation network topology；
(2) it according to the substation network topology identified, forms each line segregation region distance and protects corresponding locking domain；
(3) fault message for exporting fault identification module is summarized according to each line segregation locking domain, forms each line
Road interval region is apart from corresponding region block signal；
(4) the region block signal is exported to communication module；
Communication module：Each line segregation region block signal that our station topology identification module exports is sent between each circuit
Every the substation of offside；And the region block signal that each line segregation offside substation sends is received, output gives this side each circuit
Interval region spacing module；
Region distance module：Line fault for identification；It is described to identify that the specific method of line fault is：Region distance mould
Block is configured by line segregation, and the judgement of region distance impedor is out of order, and does not receive the region of circuit offside substation
Block signal exports trip signal through delay.
Further, the electrical equipment failure of fault identification module substation for identification, the fault identification mould
Block is mainly by route protection, main transformer protection, bus differential protection module composition.
Further, the topological identification module is according to the isolation switch position of each branch, position of the switch state and whole
Fixed main wiring mode identification substation network topology, and the topological relation after identification is inputted into this topology identification module.
Further, the recognition logic of the topological identification module is realized by this module, or is realized by outer mold piece.
Further, the outer mold piece includes bus differential protection module.
Further, region distance mould region distance impedor in the block is adjusted according to over range；
When the region distance impedor judgement on this side line road is out of order, and the area of circuit offside substation is not received
When the block signal of domain, then through deferred action；
When the region distance module on this side line road is when receiving the region block signal of circuit offside substation sent,
It is then latched the region distance protection of this side immediately.
The present invention includes fault identification module, topological identification module, communication module and region distance module：Fault identification mould
Block：Identify the failure of each electrical equipment in substation, and the fault message that will identify that is output to the input of topological identification module.
Topological identification module：Each line segregation region distance of self-adapting estimation protects corresponding locking domain, forms each line segregation region
Apart from corresponding region block signal.It comprises the concrete steps that：(1) by each electrical equipment relevant branch isolation switch position in substation
Set with position of the switch access topology identification module, topological identification module is according to the presence of the input position and adjusts
Main wiring mode, self-adapting estimation substation network topology.(2) it according to the substation network topological relation identified, is formed each
Line segregation region distance protects corresponding locking domain.(3) fault message for exporting fault identification module, according between each circuit
Summarized every locking domain, forms the corresponding region block signal of each line segregation region distance.(4) region is latched and is believed
Number output communication module.Communication module：Each line segregation region block signal that our station topology identification module inputs is sent to
The substation of each line segregation offside；And the region block signal that each line segregation offside substation sends is received, output is to this
Each line segregation region distance module in side.Region distance module：Identify line fault.Specific method is：Region distance module is pressed
Line segregation configures, and the judgement of region distance impedor is out of order, and does not receive the region locking of circuit offside substation
Signal exports trip signal through delay.Fault identification module identify substation electrical equipment failure, can be used route protection,
The submodules such as main transformer protection, bus differential protection are constituted, but not limited to this.
Topological identification module is according to the isolation switch position of each branch, position of the switch state and the main wiring mode adjusted
Identify substation network topology, the recognition logic can realize by this module, also can outside module other function modules (as female poor
Protection) in realize, the topological relation after identification is inputted into this topology identification module, is considered as power scope of the present invention.
Region distance mould region distance impedor in the block is adjusted according to over range.Region distance protects decision logic such as
Under：
The region distance impedor judgement on this side line road is out of order, and does not receive the region of circuit offside substation
Block signal, then through deferred action.
The region distance module on this side line road once receives the region block signal of circuit offside substation sent, then stands
It is latched the region distance protection of this side.
This invention simplifies the configuration of the region block signal of each line segregation, topological relation passes through topological identification module
It carries out；The present invention can greatly simplify engineering configuration, adapt to the various methods of operation, have great propulsion to the popularization of region distance
Effect.
Description of the drawings
Fig. 1 is the adaptive region distance protection range schematic diagram of the present invention；
Fig. 2 is the composition schematic diagram of the adaptive region distance protection of the present invention；
Fig. 3 is the implementation method of the adaptive region distance protection of the present invention；
Fig. 4 is the configuration method of the adaptive region distance protection of the present invention；
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is pair below according to attached drawing and implementation
The present invention is further elaborated.It should be appreciated that specific implementation described herein is only used to explain the present invention, not
Limit the present invention.
Embodiment 1
The region distance in this adaptive locking domain protects system, including fault identification module, topological identification module, communication mould
Block and region distance module：
Fault identification module：Identify the failure of each electrical equipment in substation, and the fault message that will identify that is output to
The input of topological identification module；
Topological identification module：Each line segregation region distance of self-adapting estimation protects corresponding locking domain, forms each circuit
Interval region is apart from corresponding region block signal；The self-adapting estimation of the topology identification module comprises the concrete steps that：
(1) each electrical equipment relevant branch isolation switch position in substation and position of the switch access topology are identified into mould
Block, topological identification module is according to the presence of branch isolation switch position and the position of the switch and the main electrical scheme side adjusted
Formula, self-adapting estimation substation network topology；
(2) it according to the substation network topology identified, forms each line segregation region distance and protects corresponding locking domain；
(3) fault message for exporting fault identification module is summarized according to each line segregation locking domain, forms each line
Road interval region is apart from corresponding region block signal；
(4) the region block signal is exported to communication module；
Communication module：Each line segregation region block signal that our station topology identification module exports is sent between each circuit
Every the substation of offside；And the region block signal that each line segregation offside substation sends is received, output gives this side each circuit
Interval region spacing module；
Region distance module：Line fault for identification；It is described to identify that the specific method of line fault is：Region distance mould
Block is configured by line segregation, and the judgement of region distance impedor is out of order, and does not receive the region of circuit offside substation
Block signal exports trip signal through delay.
Preferably, the electrical equipment failure of fault identification module substation for identification, the failure are known
Other module is mainly by route protection, main transformer protection, bus differential protection module composition.The topology identification module is according to each branch
Isolation switch position, position of the switch state and the main wiring mode identification substation network topology adjusted, and by opening up after identification
The relationship of flutterring inputs this topology identification module.The recognition logic of the topology identification module is realized by this module, or by outer mold piece
It realizes.The outer mold piece includes bus differential protection module.The region distance mould region distance impedor in the block is according to super model
It encloses and adjusts；When the region distance impedor judgement on this side line road is out of order, and the area of circuit offside substation is not received
When the block signal of domain, then through deferred action；When the region distance module on this side line road once receives the hair of circuit offside substation
When the region block signal come, then it is latched the region distance protection of this side immediately.
As shown in Figure 1, region distance protects the block signal protected by circuit next stage to determine its action behavior, such as
The protection of fruit next stage institute connecting element is not operating, and the over range distance protection action of this side, then can quickly export.But
Be all protections of next stage action message and next stage substation topologies change it is very big so that region distance
Implement relatively difficult.So the present invention proposes that the region distance in adaptive locking domain protects system, and provide its engineering configuration side
Method.
As shown in Fig. 2, Fig. 2, which is the region distance in adaptive locking domain, protects the composition schematic diagram of system, it includes failures
Identification module, topological identification module, communication module and region distance module.
As shown in figure 3, Fig. 3, which is the region distance in adaptive locking domain, protects the implementation method of system：
Fault identification module identifies the failure of each electrical equipment in substation, can be subdivided into line fault identification module, female
Line fault identification module, the modules such as main transformer fault identification module, the quantity of each module corresponding primary element in substation
Quantity is equal.Such as when breaking down in line areas, after line fault identification module judges troubles inside the sample space, outlet line
Fault message.Main transformer and bus-bar fault identification module do not find fault point simultaneously, then will not export main transformer or bus-bar fault information.
These information give topological identification module.
Topological each line segregation region distance of identification module self-adapting estimation protects corresponding locking domain, is formed between each circuit
Every the corresponding region block signal of region distance.It comprises the concrete steps that：
(1) each electrical equipment relevant branch isolation switch position in substation and position of the switch access topology are identified into mould
Block, topological identification module is according to the presence of the input position and the main wiring mode adjusted, self-adapting estimation power transformation
It stands network topology.It is illustrated by taking substation shown in Fig. 4 as an example.Substation is single mother partition wiring, has four outlet branch on 1 mother
Road is circuit 1 respectively, and circuit 2, circuit 3, circuit 4, the wherein switch of circuit 1 are dividing position.Bus connection switch is closing position.Have on 2 mothers
One main transformer branch, switch are closing position.It is first single female wiring by fixed value adjusting main wiring mode；Secondly, each is inputted
The location status of way switch (circuit and main transformer) and bus connection switch gives topological identification module；Again, topological identification module is according to upper
Information is stated, the current network topology structure of substation is automatically identified.I.e. branch 1 is disconnected branches；Circuit 2, circuit 3, line
Road 4, main transformer branch link together, and in single mother partition paired running mode.
(2) it according to the substation network topological relation identified, forms each line segregation region distance and protects corresponding close
Lock domain.It is illustrated by taking substation shown in Fig. 4 as an example.The locking domain of circuit 1 is other members for having topology to contact in addition to circuit 1
Part, because the switch of circuit 1 is divides position, therefore it is sky that it, which is latched domain,.The locking domain of circuit 2, which is other in addition to circuit 2, topological contact
Element, i.e. circuit 3, circuit 4, main transformer branch and busbar.The locking domain of circuit 3, which is other in addition to circuit 3, topological contact
Element, i.e. circuit 2, circuit 4, main transformer branch and busbar.The locking domain of circuit 4, which is other in addition to circuit 4, topological contact
Element, i.e. circuit 2, circuit 3, main transformer branch and busbar.
(3) fault message for inputting fault identification module is summarized according to each line segregation locking domain, forms each line
Road interval region is apart from corresponding region block signal.It is illustrated by taking substation shown in Fig. 4 as an example.The region of circuit 1 is latched
Signal is always 0 (0 indicates not to be latched).The region block signal of circuit 2 is circuit 3, circuit 4, main transformer branch and bus-bar fault
Signal logical "or" signal.The region block signal of circuit 3 is circuit 2, circuit 4, the letter of main transformer branch and bus-bar fault
Number logical "or" signal.The region block signal of circuit 4 is circuit 2, circuit 3, the signal of main transformer branch and bus-bar fault
Logical "or" signal.
(4) the region block signal is exported to communication module.
It can also be digital quantity that region block signal, which can be analog quantity, herein, keep the number of transmitting terminal and receiving terminal
It is consistent according to type.
Communication module：Each line segregation region block signal that our station topology identification module inputs is sent between each circuit
Every the substation of offside；And the region block signal that each line segregation offside substation sends is received, output gives this side each circuit
Interval region spacing module.
Region distance module：Region distance module is configured by line segregation, and the judgement of region distance impedor is out of order, and
And the region block signal of circuit offside substation is not received, export trip signal through delay.
It is an advantage of the invention that simplifying the configuration of the region block signal of each line segregation, topological relation passes through topology
Identification module carries out.The present invention can greatly simplify engineering configuration, adapt to the various methods of operation, have weight to the popularization of region distance
Big progradation.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. adaptively the region distance in locking domain protects system, it is characterised in that:Including fault identification module, topology identification mould
Block, communication module and region distance module：
Fault identification module：Identify the failure of each electrical equipment in substation, and the fault message that will identify that is output to topology
The input of identification module；
Topological identification module：Each line segregation region distance of self-adapting estimation protects corresponding locking domain, forms each line segregation
Region distance protects corresponding region block signal；The self-adapting estimation of the topology identification module comprises the concrete steps that：
(1) by each electrical equipment relevant branch isolation switch position in substation and position of the switch access topology identification module,
Topological identification module according to the presence of branch isolation switch position and the position of the switch and the main wiring mode adjusted,
Self-adapting estimation substation network topology；
(2) it according to the substation network topology identified, forms each line segregation region distance and protects corresponding locking domain；
(3) fault message for exporting fault identification module is summarized according to each line segregation locking domain, is formed between each circuit
The corresponding region block signal of septal area domain distance protection；
(4) the region block signal is exported to communication module；
Communication module：Each line segregation region block signal that our station topology identification module exports is sent to each line segregation pair
The substation of side；And the region block signal that each line segregation offside substation sends is received, output gives this side each line segregation
Region distance module；
Region distance module：Line fault for identification；It is described to identify that the specific method of line fault is：Region distance module is pressed
Line segregation configures, and the judgement of region distance impedor is out of order, and does not receive the region locking of circuit offside substation
Signal exports trip signal through delay.
2. the region distance in adaptive locking domain according to claim 1 protects system, it is characterised in that：The failure is known
The electrical equipment failure of other module substation for identification, the fault identification module are mainly protected by route protection module, main transformer
Protect module, bus differential protection module composition.
3. the region distance in adaptive locking domain according to claim 1 protects system, it is characterised in that：The topology is known
Other module is according to the isolation switch position of each branch, position of the switch state and the main wiring mode identification substation network adjusted
Topology, and the topological relation after identification is inputted into this topology identification module.
4. the region distance in adaptive locking domain according to claim 1 protects system, it is characterised in that：The topology is known
The recognition logic of other module is realized by this module, or is realized by outer mold piece.
5. the region distance in adaptive locking domain according to claim 4 protects system, it is characterised in that：The outer mold piece
Including bus differential protection module.
6. the region distance in adaptive locking domain according to claim 1 protects system, it is characterised in that：The region away from
It is adjusted according to over range from mould region distance impedor in the block；
When the region distance impedor judgement on this side line road is out of order, and the region for not receiving circuit offside substation is closed
When lock signal, then through deferred action；
When the region distance module on this side line road is when receiving the region block signal of circuit offside substation sent, then stand
It is latched the region distance protection of this side.
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| CN107026431B (en) * | 2017-03-13 | 2019-01-08 | 全球能源互联网研究院有限公司 | The fault detection method and device of region AC/DC interconnected system |
| CN111969728B (en) * | 2020-08-24 | 2025-01-17 | 无锡圣普电力科技有限公司 | A new topology recognition system transmitter |
| CN113067317A (en) * | 2021-03-31 | 2021-07-02 | 国网浙江省电力有限公司电力科学研究院 | Setting-free method and system for distance protection II section of power transmission line |
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| CN102684173A (en) * | 2012-04-05 | 2012-09-19 | 凯里供电局 | Quick network electric power relay protection system |
| CN102904222A (en) * | 2011-12-24 | 2013-01-30 | 许继集团有限公司 | Regional power grid protection configuration method |
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| US9513648B2 (en) * | 2012-07-31 | 2016-12-06 | Causam Energy, Inc. | System, method, and apparatus for electric power grid and network management of grid elements |
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| CN102904222A (en) * | 2011-12-24 | 2013-01-30 | 许继集团有限公司 | Regional power grid protection configuration method |
| CN102684173A (en) * | 2012-04-05 | 2012-09-19 | 凯里供电局 | Quick network electric power relay protection system |
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| 分区域广域继电保护的系统结构与故障识别;李振兴等;《中国电机工程学报》;20111005;第95-103页 * |
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