CN108565844B - A kind of distributed local relay protection system - Google Patents
A kind of distributed local relay protection system Download PDFInfo
- Publication number
- CN108565844B CN108565844B CN201810386877.7A CN201810386877A CN108565844B CN 108565844 B CN108565844 B CN 108565844B CN 201810386877 A CN201810386877 A CN 201810386877A CN 108565844 B CN108565844 B CN 108565844B
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- Prior art keywords
- instruction
- protection
- processor
- controllable switch
- starting
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Classifications
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- 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
- H02H7/261—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 involving signal transmission between at least two stations
- H02H7/262—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 involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- 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
- H02H7/261—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 involving signal transmission between at least two stations
- H02H7/263—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 involving signal transmission between at least two stations involving transmissions of measured values
-
- 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
- H02H7/28—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 meshed systems
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- Small-Scale Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of distributed local relay protection system, including at least two handsets；Each handset is provided with starting processor, protection processor and instruction sending module；Starting processor is connected with the first acquisition module, and protection processor is connected with the second acquisition module；Start processor to be used to issue enabled instruction to instruction sending module according to the collected information of the first acquisition module, protection processor is used to issue protection instruction to instruction sending module according to the collected information of the second acquisition module；Instruction sending module receives the instruction of output execution protection act after the protection instruction for protecting processor and the enabled instruction for starting processor simultaneously.Technical solution provided by the invention, instruction sending module only receives enabled instruction at the same time and protection instruction Shi Caixiang relay protection device output executes the instruction of protection act, so can be improved the reliability of distributed local protective relaying device.
Description
Technical field
The invention belongs to Relay Protection Technology in Power System fields, and in particular to a kind of distributed local relay protection system
System.
Background technique
Protective relaying device is needed to execute relay protection movement when electric system is broken down, and electric system relay is protected
The precondition that protection unit correctly acts is the analog quantity that can fast and accurately receive reflection electric power system fault feature
With the electrical measure feature such as switching value.
To improve the reliability that protective relaying device samples electrical measure feature, the design of relay protection of power system equipment is adopted
A series of measure has been taken, protective device malfunction is such as prevented, using dual processors block coupled in series using two from three tripping outlet mode
Mode prevent from protective device is caused to open by mistake out when processor fault, double relay series loop be set to prevent relay from accidentally swashing
It encourages the junction closure that causes to trip, use double AD samplings to prevent single loops sample from causing protective device tripping or mistake extremely
Dynamic, introducing sampled value abnormality detection finds that sampling element abnormal obliteration is accordingly protected in time.
The relay protection device of electric system has centralized arrangement and site to arrange two kinds of set-up modes.Due to the cloth of concentration
The mode of setting needs to build dedicated outdoor cabinet and relay protection chamber, and in order to guarantee the normal fortune of outdoor cabinet and relay protection chamber
Row needs to keep constant the temperature of outdoor cabinet and relay protection chamber using heat-exchange apparatus such as a large amount of air-conditionings, fans, so just
It will cause the increase of system energy consumption.But these problems are not present in the mode of site setting, and relative to centralized arrangement
Mode can cut down the number of intermediate links, and realize the fast and reliable movement of relay protection.
The mode of site setting needs to be arranged multiple handsets, passes through looped network communication connection between each handset, structure is shown
It is intended to as shown in Figure 1, it is assumed that be equipped with four estrade machines in site relay protection system, successively communication connection shape between each handset
At communication ring network, the processor of each handset obtains information from communication ring network, and carries out to the relay protection device of corresponding handset
Control.The reliability of this control mode is poor, once as terminal or exception occur in processor failure or communication ring network, it will
It will lead to relay protection device tripping occur or do not move.
Summary of the invention
The present invention provides a kind of distributed local relay protection system, for solving distributed local in the prior art
The problem of protective relaying device poor reliability.
To achieve the above object, present invention provide the technical scheme that
A kind of distributed local relay protection system, including at least two handsets；Each handset is provided with starting processing
Device, protection processor and instruction sending module；
The starting intercommunication of processors of each handset connects, the protection intercommunication of processors connection of each handset；
The starting processor and protection processor are connect with instruction sending module, and starting processor is connected with the first acquisition
Module, protection processor are connected with the second acquisition module；Start processor to be used for according to the collected information of the first acquisition module
Enabled instruction is issued to instruction sending module, protection processor is used to send out according to the collected information of the second acquisition module to instruction
Module is sent to issue protection instruction；
Described instruction sending module is equipped with the instruction output interface for connecting relay protection device, and instruction sending module is same
When receive protection processor protection instruction and starting processor enabled instruction after, instruction output interface output executes protection
The instruction of movement.
Technical solution provided by the present invention, instruction sending module only receive enabled instruction and protection instruction at the same time
The output of Shi Caixiang relay protection device executes the instruction of protection act, even if starting processor or protection processor issue mistake
Control instruction will not cause the malfunction for protecting equipment, to improve the reliability of distributed local protective relaying device.
It is further limited as to instruction sending module, described instruction sending module includes control unit and controllably opens
It closes, described instruction output interface is arranged on the control unit；Control unit is connect with the protection processor and starting processor,
And the control terminal of controllable switch is connected by instruction output interface；The controllable switch is used to be arranged in the supply lines of protection equipment
On the road.
As the further improvement to instruction sending module, described instruction sending module includes the first controllable switch and second
Controllable switch, wherein the control terminal of port connection first controllable switch of the processor for sending protection instruction is protected, at starting
The port that reason device is used to send enabled instruction connects the control terminal of the second controllable switch, the first controllable switch and the second controllable switch
For the power supply line of protection equipment to be arranged in after series connection.
It is further limited as to starting processor communication modes in handset, including at least three handsets, each handset
Start processor between by the way of looped network mutual communication connection.
It is further limited as to looped network, the looped network is bidirectional loop network.
Processor communication modes are protected to further limit as in handset, including at least three handsets, each handset
Protect processor between by the way of looped network mutual communication connection.
It is further limited as to looped network, the looped network is bidirectional loop network.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of distributed local relay protection system in the prior art；
Fig. 2 is the structural schematic diagram of distributed local relay protection system in embodiment；
Fig. 3 is the structural schematic diagram of instruction sending module when using control unit in embodiment；
Fig. 4 is the structural schematic diagram of instruction sending module when using circuit structure in embodiment.
Specific embodiment
The present invention provides a kind of distributed local relay protection system, for solving distributed local in the prior art
The problem of protective relaying device poor reliability.
To achieve the above object, present invention provide the technical scheme that
A kind of distributed local relay protection system, including at least two handsets；Each handset is provided with starting processing
Device, protection processor and instruction sending module；
The starting intercommunication of processors of each handset connects, the protection intercommunication of processors connection of each handset；
The starting processor and protection processor are connect with instruction sending module, and starting processor is connected with the first acquisition
Module, protection processor are connected with the second acquisition module；Start processor to be used for according to the collected information of the first acquisition module
Enabled instruction is issued to instruction sending module, protection processor is used to send out according to the collected information of the second acquisition module to instruction
Module is sent to issue protection instruction；
Described instruction sending module is equipped with the instruction output interface for connecting relay protection device, and instruction sending module is same
When receive protection processor protection instruction and starting processor enabled instruction after, instruction output interface output executes protection
The instruction of movement.
Technical solution of the present invention is described further with reference to the accompanying drawing.
The present embodiment provides a kind of distributed local relay protection systems, and there are two places for setting in each handset of system
Device is managed, two processors of each handset are separately positioned in two looped networks, to improve distributed local relay protection system
Reliability.
Distributed local relay protection system provided by the present embodiment, structure is as shown in Fig. 2, include four sons
Machine, respectively handset 1, handset 2, handset 3 and handset 4.
It is provided with starting processor in each handset, protects processor and instruction sending module.The starting of each handset is handled
Device successively mutual communication connection, forms starting looped network, and the protection processor of each handset successively mutual communication connection forms protection ring
Net.
Instruction sending module is provided with instruction output interface, and instruction output interface is set for connecting protection equipment to protection
Preparation send whether the instruction of starting protection.Starting processor and protection processor are connect with instruction sending module；Starting processing
Device is connected with the first acquisition module, and the first acquisition module is used to acquire the operation number of corresponding handset, starts processor according to first
The collected voltage and current of acquisition module judges whether to issue enabled instruction to instruction sending module；Protection processor is connected with
Second acquisition module, the second acquisition module are used to acquire the operation number of corresponding handset, protect processor according to the second acquisition module
Collected voltage and current judges whether to issue protection instruction to instruction sending module.
When instruction sending module receives the enabled instruction of starting processor simultaneously and protects the protection instruction of processor,
Instruction by from instruction output interface to protection equipment output order protection act.
Instruction sending module can be realized by the way of control unit, can also be realized by the way of circuit control.
When instruction control module is by the way of control unit, as shown in figure 3, control unit connection protection processor and starting processing
Device, receives the protection instruction of protection processor and the enabled instruction of starting processor, and instruction output interface is arranged in control unit
On, and the control terminal of controllable switch K0 is connected, controllable switch K0 is arranged in the power supply line of protection equipment.
When instruction control module is realized by the way of circuit control, as shown in figure 4, include the first controllable switch K1 and
The power supply line of protection equipment is set after the second controllable switch K2, the first controllable switch K1 and the second controllable switch K2 series connection
In, protection processor connects the control terminal of the first controllable switch K1, and starting processor connects the control terminal of the second controllable switch K2.
The corresponding collected data of first acquisition module are according to fixed format packaged as by the starting processor of each handset
It is transferred to after message in starting looped network.
The starting processor of each handset also obtains the operation data messages of other handsets from starting looped network, and to message into
The operation data of other handsets is obtained after row parsing.
The corresponding collected data of second acquisition module are according to fixed format packaged as by the protection processor of each handset
It is transferred to after message in starting looped network.
The protection processor of each handset also obtains the operation data messages of other handsets from starting looped network, and to message into
The operation data of other handsets is obtained after row parsing.
In order to increase the reliability communicated between each handset, starting looped network and protection looped network are all made of bidirectional loop network, that is, divide
Not Wei two physical links looped network, and between the two mutually it is spare.The data transfer direction of starting looped network is under normal circumstances
Handset 1- handset 2- handset 3- handset 4- handset 1, protecting the data transfer direction of looped network is handset 1- handset 4- handset 3- handset
2- handset 1；When interrupting or being abnormal occur in wherein some looped network, the data transfer direction of the looped network with it is normal when direction phase
Instead.
Claims (3)
1. a kind of distributed local relay protection system, including at least three handsets；It is characterized in that, each handset is provided with
Start processor, protection processor and instruction sending module；
Between the starting processor of each handset by the way of bidirectional loop network mutual communication connection, under normal circumstances looped network data edge
The transmission of some direction, when the link down or exception in direction looped network, looped network data are transmitted along another direction；
Between the protection processor of each handset by the way of bidirectional loop network mutual communication connection, under normal circumstances looped network data edge
The transmission of some direction, when the link down or exception in direction looped network, looped network data are transmitted along another direction；
The starting processor and protection processor are connect with instruction sending module, and starting processor is connected with the first acquisition mould
Block, protection processor are connected with the second acquisition module；Start processor be used for according to the collected information of the first acquisition module to
Instruction sending module issues enabled instruction, and protection processor is used to be sent according to the collected information of the second acquisition module to instruction
Module issues protection instruction；
Described instruction sending module is equipped with the instruction output interface for connecting relay protection device, and instruction sending module connects simultaneously
After receiving the protection instruction of protection processor and the enabled instruction of starting processor, instruction output interface output executes protection act
Instruction.
2. a kind of distributed local relay protection system according to claim 1, which is characterized in that described instruction is sent
Module includes control unit and controllable switch, and described instruction output interface is arranged on the control unit；Control unit and the guarantor
Shield processor is connected with starting processor, and the control terminal of controllable switch is connected by instruction output interface；The controllable switch
For the power supply line of protection equipment to be arranged in.
3. a kind of distributed local relay protection system according to claim 1, which is characterized in that described instruction is sent
Module includes the first controllable switch and the second controllable switch, wherein the port that protection processor is used to send protection instruction connects the
The control terminal of one controllable switch, the port that starting processor is used to send enabled instruction connect the control terminal of the second controllable switch,
For the power supply line of protection equipment to be arranged in after first controllable switch and the series connection of the second controllable switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386877.7A CN108565844B (en) | 2018-04-26 | 2018-04-26 | A kind of distributed local relay protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386877.7A CN108565844B (en) | 2018-04-26 | 2018-04-26 | A kind of distributed local relay protection system |
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| Publication Number | Publication Date |
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| CN108565844A CN108565844A (en) | 2018-09-21 |
| CN108565844B true CN108565844B (en) | 2019-11-12 |
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| CN201810386877.7A Active CN108565844B (en) | 2018-04-26 | 2018-04-26 | A kind of distributed local relay protection system |
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| CN109257263B (en) * | 2018-10-15 | 2021-01-29 | 积成电子股份有限公司 | Data transmission method of on-site protection device based on double-loop network |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684838A (en) * | 2016-12-29 | 2017-05-17 | 许继集团有限公司 | Local relay protection control device and relay projection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684838A (en) * | 2016-12-29 | 2017-05-17 | 许继集团有限公司 | Local relay protection control device and relay projection method |
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