CN106899001B - A kind of intelligent substation secondary N in one equipment - Google Patents
A kind of intelligent substation secondary N in one equipment Download PDFInfo
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- CN106899001B CN106899001B CN201710081966.6A CN201710081966A CN106899001B CN 106899001 B CN106899001 B CN 106899001B CN 201710081966 A CN201710081966 A CN 201710081966A CN 106899001 B CN106899001 B CN 106899001B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
本发明涉及一种智能变电站二次N合一设备，当执行保护的二次N合一设备中出现异常的模块，则调用镜像对其他包含较多相关信息的正常二次N合一设备中的后备通用计算单元执行覆写保护算法，完成对电气设备的保护功能。避免了保护设备内部元件单点失效带来的风险，提高了智能变电站设备站域保护的可靠性。
The invention relates to a secondary N-in-1 device of an intelligent substation. When an abnormal module occurs in the secondary N-in-1 device performing protection, the mirror image is called to other normal secondary N-in-1 devices that contain more relevant information. The backup general computing unit executes the overwrite protection algorithm to complete the protection function of the electrical equipment. The risk brought by the single-point failure of the internal components of the protection equipment is avoided, and the reliability of the station domain protection of the intelligent substation equipment is improved.
Description
Technical field
The present invention relates to a kind of intelligent substation secondary N in-one devices, belong to intelligent substation station domain protection field.
Background technique
First and second equipment integration is the important directions of smart grid future development, will be provided with sensing measurement, logic fortune
The secondary intelligent cell for calculating, communicating collaboration capabilities is encapsulated in electric power primary equipment, and equipment room is using optical fiber as information exchange branch
Support, to construct substation's interactive mode protection control system of networking, self-organizing.According to modularized design principle, first and second
Equipment integration will simplify the process of construction of traditional transformer station secondary system, significantly reduce the assembly being likely to occur in work progress
Mistake.Relative to the design that traditional transforming plant primary equipment, secondary device separate, substation's total solution of the program
With the advantage to hardly match.
, there is some be difficult to adapt in the centralized or distributed station domain of existing maturation and wide area protection scheme.
Centralization is protected, due to its unicity, once certain protection equipment breaks down, will so that protection scheme itself is unreliable,
And the structure of centralization is disagreed with the integrated objective of first and second equipment.For distributed protection, domain protection of standing, which rarely has, is answered
With, but have more mature application in wide area protection field.Though it is integrated that distributed unit has followed first and second equipment
Objective, but directly merged with primary equipment using single secondary device as distributed unit, it is placed under outdoor operating condition, now
The intelligent secondary device device in primary equipment service life can be well matched with still on the market, intense electromagnetic is interfered and is disliked
The adaptability of bad running environment is also without the inspection by scene.Therefore, by primary equipment and secondary device within the short time
It is integrated in same equipment that there is also the feasibility for being difficult to overcome for the moment and integrity problems.
If by be integrated in primary equipment it is secondary be partially stripped out, configure, be integrated on the spot according to geographical location
In the relatively good outdoor cabinet of environmental condition, it is respectively installed near main primary equipment.In this case can be improved because
Intense electromagnetic interference, but with the raising of voltage class, electromagnetic interference is gradually increased, and the reliability of equipment cannot still be protected
Card.
Also, first and second equipment integration also brings other problems, and protection system is adopted under severe outdoor operating condition
The links such as sample, logic judgment, information transmission are all likely to occur failure.
Summary of the invention
The purpose of the present invention is to provide a kind of intelligent substation secondary N in-one devices, for solving equipment internal element
Single point failure, and in existing station protection reliability deficiency problem.
To achieve the above object, the solution of the present invention includes: a kind of intelligent substation secondary N in-one device, comprising: information
Acquisition module, universal computing unit, information exchange module, memory module and execution module；Information acquisition module is for real-time
Acquire the operation data of the primary equipment of more than two electrical separations；Universal computing unit is used for the fortune according to information acquisition module
Row data carry out fault identification, generate action command；Execution module carries out protection to primary equipment according to the action command and moves
Make；Information exchange module is used to be connected to the network with station communication, carries out information exchange with other secondary N in-one devices；Storage
Module is for storage protection program and protection fixed value information, and the corresponding electrical separation of the secondary N in-one device of surrounding is primary
Facility information；
When executing defencive function, if universal computing unit fails, according to the secondary N in-one device corresponding one of surrounding
Secondary device information, selection with it is current execute defencive function relevant information at most around secondary N in-one device, override the surrounding
The universal computing unit of secondary N in-one device, and receive the universal computing unit generation of secondary N in-one device around described
Action command.
The memory module is also stored with the routing iinformation of the station communication network, when the secondary N unification of the surrounding is set
When having two or more, the nearest secondary N in-one device of preferential selection routing.
The universal computing unit includes more than one common calculation module, when a common calculation module fails,
The common calculation module not failed in preferential selection universal computing unit.
A kind of intelligent substation secondary N in-one device provided by the invention, the universal computing unit in secondary N in-one device
Failure selects the suitable secondary N in-one device of surrounding, and the universal computing unit of secondary N in-one device, executes appearance around overriding
The protection work function of the secondary N in-one device of problem, the dual for realizing hardware and software level in the case of limited resources are superfluous
It is remaining, effectively evaded internal element single point failure bring risk, cope with protection system severe outdoor operating condition down-sampling,
The failure that the links such as logic judgment, information transmission are likely to occur, improves the reliability of smart substation equipment protection.
Detailed description of the invention
Fig. 1 is secondary N in-one device internal module figure；
Fig. 2 is the secondary N in-one device topological diagram of the embodiment of the present invention；
Fig. 3 is the communication network of secondary N in-one device in the present embodiment.
Specific embodiment
In smart grid, single secondary N in-one device of the present invention manages multiple electrical separations, same electrical
Primary equipment in interval can also be by multiple secondary N in-one device management.
The present invention designs a kind of secondary N in-one device, which includes: information acquisition module, universal computing unit, information
Interactive module, memory module and execution module；Information acquisition module for acquiring the primary of more than two electrical separations in real time
The operation data of equipment；Universal computing unit is used for the operation data according to information acquisition module, carries out fault identification, generates dynamic
It orders；Execution module carries out protection act to primary equipment according to the action command；Information exchange module be used for in station
Communication network connection carries out information exchange with other secondary N in-one devices；Memory module is used for storage protection program and protection
Fixed value information, and the primary equipment information of the corresponding electrical separation of other secondary N in-one devices of surrounding.
The technical scheme is that when executing defencive function, if the universal computing unit of secondary N in-one device fails,
It is then related with current execution defencive function according to the corresponding primary equipment information of other secondary N in-one devices, selection around described
Secondary N in-one device around information is most, overrides the universal computing unit of secondary N in-one device around described, utilizes selection
Secondary N in-one device in the universal computing unit that overrides carry out the processing and fault identification of facility information, generate action command,
What the universal computing unit that the secondary N in-one device of universal computing unit failure receives secondary N in-one device around described generated
Action command realizes the normal protection of primary equipment using itself normal other elements.The present invention is realized to be unified in secondary N
Universal computing unit when something goes wrong, calls other available secondary N in-one devices to carry out function overriding immediately in equipment, thus
The defencive function to primary equipment is not influenced, improves the reliability of electric network protection.
The present invention will be further described with reference to the accompanying drawing:
Secondary N in-one device of the present invention is built upon electric system primary equipment, secondary device integration conception
On the basis of, gather the function of various secondary devices, is distributed to primary equipment.On the one hand secondary N in-one device collects one
The on-off models such as the electrical quantity such as voltage, the electric current of secondary side and breaker, disconnecting switch nodes of locations, utilize own processor
Directly to adopt the quick defencive function that the form directly jumped realizes interval corresponding to it；On the other hand it is provided for the interior protection across interval of standing
The integrated information of this side, multiple secondary N in-one devices adopt the form that net is jumped with net and pass through the interior quickly protection communication network structure in station
At the protection across interval, such as transformer differential protection, bus differential protecting etc..
As shown in Figure 1, it is the structure of secondary N in-one device, the primary equipment of N in-one device includes but is not limited to power transformation
The primary equipments such as bus, route, transformer in standing.Two second part of emphasis N in-one device of the invention illustrate secondary N and close
One equipment includes information acquisition module, information exchange module, universal computing unit module and storage module.Certainly, secondary N unification
Equipment includes but is not limited to above-mentioned module.The secondary N in-one device has multiple universal computing units, mutual backup.Secondary N unification
There is cluster tool communication module hardware to design from redundancy and memory image.
By information acquisition module, secondary N in-one device is capable of real-time acquisition the operation data of power grid, mainly include electric current,
Information of voltage and circuit-breaker status information.Meanwhile it is pre- to carry out the protective module based on GPF (General Protection False principle to collected data
Then processing presses certain format organization's data, is supplied to the universal computing unit of secondary N in-one device.
By information exchange module, secondary N in-one device is shared the fault message in region by communication network, is obtained
Failure decision order is taken to realize failure removal.Secondary N in-one device need to have the message capacity of high nargin, high traffic rate
With powerful information processing capability, handle up with the classification processing of the inside and outside massive information in support station and in real time, and then fast and reliable
Respond the request and cooperation of other equipment.
By universal computing unit, secondary N in-one device reads required electricity in Ethernet according to program maps relationship
Gas information, fault identification function.Secondary N in-one device obtains the fault message in protection zone based on communication network, in conjunction with comprehensive
It closes decision discernment algorithm and carries out system failure identification.When recognition result is not known, start the negotiation of a new round, and utilize fault-tolerant
Measure identifies fault element.
By storage module, stores two classes and protect fixed value information: storage protection program and protection fixed value information, and surrounding
The primary equipment information of the corresponding electrical separation of other secondary N in-one devices.
Single secondary N in-one device manages multiple electrical separations, and the equipment in same electrical separation is unified by multiple secondary N
Equipment management, multiple secondary N in-one devices are connected by station communication net, realize high-speed communication between secondary N in-one device.
There is secondary N in-one device to describe it is found that single secondary N in-one device generally comprises several universal computing units.
When secondary N in-one device realizes the relay protective scheme algorithm of its whole, it is only necessary to use part universal computing unit, remaining is general
Computing unit can be used as standby.
Based on secondary N in-one device, substation is considered as by several regions, individual equipment manages several intervals concentratedly
Design reduces the sum of secondary device.Protect control function that will directly realize in the secondary N in-one device of distribution installing,
The protection system based on secondary N in-one device is formed in substation.Device distribution formula installs the reliability for improving protection, cancels
Transformer station's master control room reduces substation's occupied area.General substation is all bus section operation, and single secondary N unification
Equipment manages two to four intervals similar in geographical location concentratedly, and multiple secondary N in-one devices cooperate jointly constitutes bus protection.
As shown in Fig. 2, based on a kind of typical substation topology structure of the invention, secondary N in-one device 1 is in charge of transformation
Device low-pressure side, secondary N in-one device 2 are in charge of high-voltage side outlet wire L1 and L2, and secondary N in-one device 3 is in charge of outlet L3 and L4, equipment
1,2 and 3 protection for having collectively constituted bus 1；
Similarly, secondary N in-one device 11 is in charge of step down side, secondary N in-one device 5 be in charge of high-voltage side outlet wire L5 and
L6, secondary N in-one device 6 are in charge of high-voltage side outlet wire L7, L8 and L9, and equipment 11,5 and 6 has collectively constituted the protection of bus 2；
Secondary N in-one device 12 is in charge of step down side, and secondary N in-one device 5 is in charge of high-voltage side outlet wire L5 and L6, and two
Secondary N in-one device 6 is in charge of high-voltage side outlet wire L10 and L11, and equipment 12,7 and 9 has collectively constituted the protection of bus 3；
Secondary N in-one device 10,11,12 constitutes the protection of bus 0 again；
Wherein, secondary N in-one device 1 shares primary equipment b1 with secondary N in-one device 10, and secondary N in-one device 4 divides again
Not with secondary N in-one device 1,11 and 8 shared primary equipment b6, b8, b14, secondary N in-one device 12 and secondary N in-one device 8
Shared primary equipment b16.
Other secondary N in-one devices around secondary N in-one device can be secondary N unification all in station communication net
Equipment, it is preferred that sharing other secondary N in-one devices of primary equipment with the secondary N in-one device, or routing is limiting
Secondary N in-one device in hop count, can be set according to actual motion.
For example, other secondary N in-one devices can be all secondary N in station communication net around secondary N in-one device 4
In-one device, selects here and secondary N in-one device 4 shares the secondary N in-one device 1,8 and 11 of primary equipment as around it
Secondary N in-one device, select certainly without being limited thereto.
In the universal computing unit failure of secondary N in-one device 4, then according to described other secondary N in-one devices of surrounding
1,8 and 11 corresponding primary equipment information, selection with it is current execute defencive function relevant information at most around secondary N unify and set
Standby, such as secondary N in-one device 11 overrides the universal computing unit of secondary N in-one device 11 around described, and receives the week
The action command that the universal computing unit of secondary N in-one device 11 generates is enclosed, so that the execution module by equipment is protected
Movement.
Memory module is also stored with the routing iinformation of the station communication network, when the secondary N in-one device of surrounding has
When more than two, the nearest secondary N in-one device of preferential selection routing.
It is illustrated in figure 3 the communication network of each secondary N in-one device, is illustrated as the side of VLAN Virtual working group
Case.Certainly, specific networking plan includes but is not limited to VLAN networking plan.Using the VLAN partition mode based on port, according to
Actual demand, the same port can be divided in the different vlans.According to the VLAN networking mode of building, identical point is constituted
The secondary N in-one device of section bus protection can carry out high-speed traffic by virtual vlan network, realize and believe with other sectionalized busbars
The isolation of breath；The secondary N in-one device of different sectionalized busbars can realize information transmission by station communication net.
If the secondary N in-one device 1,2,3,4 in bus section 1 can realize high-speed traffic, the secondary N in bus section 2
In-one device 4,5,6 can also realize high-speed traffic, and the secondary N in-one device 5,6,7,8,9 in bus section 3 can also be realized quickly
Communication, and the communication of bus section 1 and bus section 3 can be realized by secondary N in-one device 4, and when being communicated,
The segmentation of process is more, and equipment routing is remoter.
When universal computing unit in secondary N in-one device 4 fails, selection executes defencive function relevant information with current
Secondary N in-one device around most, if all comprising being protected in secondary N in-one device 4 in secondary N in-one device 1,8 and 11
The relevant information of function, preferential selection are override comprising the more equipment of relevant information, if comprising relevant information it is identical,
According to networking diagram as shown in Figure 3, the nearest secondary N in-one device 1 of preferential selection routing is override.
As a further improvement, universal computing unit includes more than one common calculation module, in a general-purpose computations
When Module Fail, the preferential common calculation module for selecting not fail in universal computing unit.
If universal computing unit includes n common calculation module, when common calculation module 1 fails, and other general-purpose computations
When module is normal, remaining normal common calculation module in equipment is selected to carry out function overriding, realizes that the function in equipment is protected
Shield.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.Base of the invention
This thinking is above-mentioned basic scheme, and for those of ordinary skill in the art, various changes are designed in introduction according to the present invention
Hardware configuration, the software flow of shape.Without departing from the principles and spirit of the present invention to embodiment carry out variation,
Modification, replacement and deformation are still fallen in protection scope of the present invention.
Claims (3)
1. a kind of intelligent substation secondary N in-one device characterized by comprising information acquisition module, universal computing unit,
Information exchange module, memory module and execution module；
The operation data of primary equipment of the information acquisition module for acquiring more than two electrical separations in real time；
Universal computing unit is used for the operation data according to information acquisition module, carries out fault identification, generates action command；
Execution module carries out protection act to primary equipment according to the action command；
Information exchange module is used to be connected to the network with station communication, carries out information exchange with other secondary N in-one devices；
Memory module is for storage protection program and protection fixed value information, and the corresponding electric equipment compartment of the secondary N in-one device of surrounding
Every primary equipment information；
When executing defencive function, if universal computing unit fails, once set according to the secondary N in-one device of surrounding is corresponding
Standby information, selection with it is current execute defencive function relevant information at most around secondary N in-one device, described in overriding with currently hold
Row defencive function relevant information at most around secondary N in-one device universal computing unit, and receive it is described with currently hold
The action command that the universal computing unit of secondary N in-one device generates around row defencive function relevant information is most；
Single secondary N in-one device manages multiple electrical separations, and the equipment in same electrical separation is by multiple secondary N in-one devices
Management.
2. a kind of intelligent substation secondary N in-one device according to claim 1, which is characterized in that the memory module
Also be stored with the routing iinformation of the station communication network, around described secondary N in-one device there are two it is above when, it is preferential to select
Routing is by nearest secondary N in-one device.
3. a kind of intelligent substation secondary N in-one device according to claim 1, which is characterized in that the general-purpose computations
Unit includes more than one common calculation module, when a common calculation module fails, preferentially selects universal computing unit
In the common calculation module that does not fail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710081966.6A CN106899001B (en) | 2017-02-15 | 2017-02-15 | A kind of intelligent substation secondary N in one equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710081966.6A CN106899001B (en) | 2017-02-15 | 2017-02-15 | A kind of intelligent substation secondary N in one equipment |
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| CN106899001A CN106899001A (en) | 2017-06-27 |
| CN106899001B true CN106899001B (en) | 2019-04-09 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474095A (en) * | 2009-07-07 | 2012-05-23 | Abb研究有限公司 | Substation automation system with remote redundant protection function |
| CN203660662U (en) * | 2013-11-08 | 2014-06-18 | 国家电网公司 | Single-space five-in-one device for intelligent transformer station |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2159893A1 (en) * | 2008-08-29 | 2010-03-03 | ABB Research LTD | Substation automation with redundant protection |
| CN101847865A (en) * | 2010-05-06 | 2010-09-29 | 安徽省电力公司合肥供电公司 | Electric network relay protection and fault analysis system |
| CN102118061A (en) * | 2011-01-07 | 2011-07-06 | 中国电力技术装备有限公司 | Method and system for centralized control of regional power grid |
| CN103269125B (en) * | 2013-05-08 | 2015-07-01 | 国家电网公司 | Multifunctional integrated configuration platform system of secondary equipment of intelligent substation |
| CN104795897B (en) * | 2015-04-23 | 2016-08-24 | 广东电网有限责任公司电力调度控制中心 | The configurable relay protecting method of intelligent substation and system |
| CN105871064A (en) * | 2016-04-29 | 2016-08-17 | 华北电力大学 | Station territory and wide territory integrated protection structure mode system and method thereof |
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2017
- 2017-02-15 CN CN201710081966.6A patent/CN106899001B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474095A (en) * | 2009-07-07 | 2012-05-23 | Abb研究有限公司 | Substation automation system with remote redundant protection function |
| CN203660662U (en) * | 2013-11-08 | 2014-06-18 | 国家电网公司 | Single-space five-in-one device for intelligent transformer station |
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