CN109245301A - A kind of digital collecting Chinese style measure and control device and stand-by heat switching method - Google Patents
A kind of digital collecting Chinese style measure and control device and stand-by heat switching method Download PDFInfo
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- CN109245301A CN109245301A CN201811156537.1A CN201811156537A CN109245301A CN 109245301 A CN109245301 A CN 109245301A CN 201811156537 A CN201811156537 A CN 201811156537A CN 109245301 A CN109245301 A CN 109245301A
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- cpu card
- stand
- control device
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 23
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
- G06F11/2023—Failover techniques
- G06F11/2033—Failover techniques switching over of hardware resources
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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- H02J13/0062—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Computer Hardware Design (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
It include: communication plug-in unit the invention discloses a kind of digital collecting Chinese style measure and control device and stand-by heat switching method, described device: for receiving and forwarding ether network packet；Multiple CPU cards: the ether network packet for being forwarded according to communication plug-in unit realizes interval observing and controlling function；It manages plug-in unit: for monitoring the operating status of each CPU card in real time, and realizing the stand-by heat switching of each CPU card；Power insert: for powering for above-mentioned each plug-in unit.Multiple observing and controlling functions are integrated on a device by the present invention, and it is highly integrated to realize function, and device quantity will be greatly decreased, and reduce substation's occupied area；It supports operation CPU card state on_line monitoring, can find the interval observing and controlling being operating abnormally in time, and spare observing and controlling is upgraded to operation monitoring, realize the stand-by heat switching of interval observing and controlling, promote transformer station secondary system redundant ability；It supports CPU card hot plug, renew plug-in unit more online to eliminate defect.
Description
Technical field
The present invention relates to a kind of digital collecting Chinese style measure and control device and stand-by heat switching methods, belong to substation's technology neck
Domain.
Background technique
With the proposition and popularization of 61850 standard of IEC, digital transformer substation is developed rapidly and large-scale engineering
Change application, the system structure of whole transformer station is more clear.Combining unit, intelligent terminal to electrical primary voltage, electric current and break
Road device, disconnecting link position are acquired processing, so that all simultaneously Ethernet passes for digitlization for the analog quantity of electrical secondary equipment, switching value
It is defeated, so that substation's whole station information sharing has become reality.On the basis of data sharing, by the protection of independent dispersion, observing and controlling
Secondary device is by centralization integration, by multifunctional unit and unified collocation, realizes that secondary device is highly integrated, substantially reduces
Substation's occupied area.Such as Dashiqiao Liaoning Yingkou 220kV substation all obtains adequately being engineered practice at home for this, takes
Obtain good economic benefit.
In Typical Design for Substations, measure and control device is generally divided into object by and carries out single set configuration, lacks redundant ability；
Double set configurations are such as all carried out by relay protection, then high construction cost, obtain benefit and cost input mismatches, it is not economical enough.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of digital collecting Chinese style measure and control device and heat are provided
Standby switching method can be improved the redundant ability of measure and control device.
In order to achieve the above objectives, the present invention adopts the following technical solutions realization:
In a first aspect, the present invention provides a kind of digital collecting Chinese style measure and control device, described device includes:
Communication plug-in unit: for receiving and forwarding ether network packet；
Multiple CPU cards: the ether network packet for being forwarded according to communication plug-in unit realizes interval observing and controlling function；
It manages plug-in unit: for monitoring the operating status of each CPU card in real time, and realizing the stand-by heat switching of each CPU card；
Power insert: for powering for above-mentioned each plug-in unit.
Further, described device further includes cabinet, and the cabinet includes backboard, the backboard be equipped with for realizing
One or more bus of interconnection is communicated between each plug-in unit.
Further, each plug-in unit is connected on the backboard by inserting mode.
Further, multiple power switches are additionally provided on the backboard, the power switch and the CPU card one are a pair of
It should be arranged, for realizing turning on and off for corresponding CPU card power supply.
Further, described device further includes human-machine interface module.
Further, the communication plug-in unit is at least provided with 2 ethernet interfaces and at least one Ethernet processing forward
Module, for station level or process layer message to be forwarded to bus.
Second aspect, the present invention provides a kind of stand-by heat switching methods of digital collecting Chinese style measure and control device, including pipe
Plug-in unit, multiple CPU cards for realizing interval observing and controlling function are managed, described method includes following steps:
Management plug-in unit monitors the working condition of each CPU card in real time, closes CPU card power supply to be switched in operating status；
It selects a CPU card as spare CPU plug-in unit from the CPU card in stand-by state, and is sent out to spare CPU plug-in unit
Send communication configuration；
Spare CPU update of plug-in communication configuration, is switched to operating status by stand-by state.
To sum up, digital collecting Chinese style measure and control device and stand-by heat switching method provided by the invention, by multiple observing and controlling functions
It is integrated on a device, it is highly integrated to realize function, and device quantity will be greatly decreased, and reduces substation's occupied area；Branch
Operation CPU card state on_line monitoring is held, can find the interval observing and controlling being operating abnormally in time, and spare observing and controlling is upgraded to operation
Observing and controlling realizes the stand-by heat switching of interval observing and controlling, promotes transformer station secondary system redundant ability；Support CPU card hot plug,
Line renews plug-in unit more to eliminate defect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of digital collecting Chinese style measure and control device provided in an embodiment of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, the present embodiment provides a kind of digital collecting Chinese style measure and control device for supporting hot standby switch, including machine
Case, management plug-in unit, communication plug-in unit, power insert and multiple CPU cards.
The cabinet includes backboard, and the management plug-in unit, communication plug-in unit, each CPU card are connected by plugging mode
Onto backboard.It is additionally provided with one or more bus on the backboard, passes through bus bar between each plug-in unit.
The communication plug-in unit is at least provided with two ethernet interfaces, comprising: station level ethernet interface, process
Layer ethernet interface, communication plug-in unit is also at least provided with 1 Ethernet processing forward module.For by station level, process layer
Ethernet Message processing after be transmitted to each CPU card and use, the CPU card processing station level message, process layer message with
Realize the measurement control of monospace.Communication plug also supports A/B net redundancy communication, supports substation's station level and process layer group
The independent networking of net, process layer, the point-to-point plurality of communication schemes of process layer support network message flow control, support anti-network wind
Cruelly.
When work, some CPU card is operation plug-in unit in CPU card, remaining CPU card is stand-by heat plug-in unit.It is logical
Reason condition can realize the redundancy of " N-1 " using one piece of CPU card as stand-by heat plug-in unit.When system resource is abundant, can incite somebody to action
2 blocks of even muti-piece plug-in units realize the redundancy of " N-2 " and higher level, this can by the system that greatly promotes as stand-by heat plug-in unit
By property.
Management plug-in unit monitors each CPU card operating status by bus in real time, once find some operation CPU card X event
Barrier, is first shut off the power supply of CPU card X, keeps it completely out of service, further according to the strong of each CPU card in stand-by state
Health situation selects an available CPU card as spare CPU plug-in unit (hereinafter referred to as CPU card Y)；Plug-in unit is managed to insert to CPU
Part Y send communication configuration, CPU card update communication configuration after, according to communication configuration (including station level IP, process layer communicate
MAC_ADDR, AppID etc.), upgrade to operation plug-in unit, handle station level and process layer communication data, realizes CPU card X to CPU
The interval measurement control function of plug-in unit Y switches online.
Multiple power switches are additionally provided on the backboard, power switch is arranged in a one-to-one correspondence with CPU card, is allowed in device
During charging operation, the power switch of abnormal CPU card is first closed, after cabinet extraction, replaces new CPU card, then beat
The power switch for opening plug-in unit is re-powered as spare plug-in component operation.
Digital collecting Chinese style measure and control device provided by the invention further includes having human-machine interface module, can show that each CPU is inserted
The operating status of part is shown by liquid crystal or LED, substation operation maintenance personnel is facilitated to check the operating status of each plug-in unit,
Respective handling measure is taken in time.
To sum up, multiple observing and controlling functions are integrated on a device by the present invention, and it is highly integrated to realize function, will substantially be subtracted
Few device quantity, reduces substation's occupied area；It supports operation CPU card state on_line monitoring, can find to run in time different
Normal interval observing and controlling, and spare observing and controlling is upgraded to operation monitoring, realize the hot standby switch and observing and controlling redundancy of interval observing and controlling；It supports
CPU card hot plug renews plug-in unit more online to eliminate defect.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of digital collecting Chinese style measure and control device, which is characterized in that described device includes:
Communication plug-in unit: for receiving and forwarding ether network packet；
Multiple CPU cards: the ether network packet for being forwarded according to communication plug-in unit realizes interval observing and controlling function；
It manages plug-in unit: for monitoring the operating status of each CPU card in real time, and realizing the stand-by heat switching of each CPU card；
Power insert: for powering for above-mentioned each plug-in unit.
2. digital collecting Chinese style measure and control device according to claim 1, which is characterized in that described device further includes cabinet,
The cabinet includes backboard, and the backboard is equipped with for realizing one or more bus for communicating interconnection between each plug-in unit.
3. digital collecting Chinese style measure and control device according to claim 2, which is characterized in that each plug-in unit is connected by inserting mode
It is connected on the backboard.
4. digital collecting Chinese style measure and control device according to claim 2, which is characterized in that be additionally provided on the backboard multiple
Power switch, the power switch are arranged in a one-to-one correspondence with the CPU card, for realizing the connection of corresponding CPU card power supply
And shutdown.
5. digital collecting Chinese style measure and control device according to claim 1, which is characterized in that described device further includes human-machine interface
Mouth mold block.
6. digital collecting Chinese style measure and control device according to claim 1, which is characterized in that the communication plug-in unit at least provided with
2 ethernet interfaces and at least one Ethernet processing forward module, for station level or process layer message to be forwarded to always
Line.
7. a kind of stand-by heat switching method of digital collecting Chinese style measure and control device, including it is management plug-in unit, multiple for realizing interval
The CPU card of observing and controlling function, which is characterized in that described method includes following steps:
Management plug-in unit monitors the working condition of each CPU card in real time, closes CPU card power supply to be switched in operating status；
It selects a CPU card as spare CPU plug-in unit from the CPU card in stand-by state, and is sent out to spare CPU plug-in unit
Send communication configuration；
Spare CPU update of plug-in communication configuration, is switched to operating status by stand-by state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156537.1A CN109245301A (en) | 2018-09-30 | 2018-09-30 | A kind of digital collecting Chinese style measure and control device and stand-by heat switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156537.1A CN109245301A (en) | 2018-09-30 | 2018-09-30 | A kind of digital collecting Chinese style measure and control device and stand-by heat switching method |
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| Publication Number | Publication Date |
|---|---|
| CN109245301A true CN109245301A (en) | 2019-01-18 |
Family
ID=65055484
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156537.1A Pending CN109245301A (en) | 2018-09-30 | 2018-09-30 | A kind of digital collecting Chinese style measure and control device and stand-by heat switching method |
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| CN (1) | CN109245301A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034610A (en) * | 2019-05-10 | 2019-07-19 | 国家电网有限公司 | A kind of transformer station measurement and control device redundancy configuration method and system |
| CN111769983A (en) * | 2020-06-22 | 2020-10-13 | 北京紫玉伟业电子科技有限公司 | Signal processing task backup dynamic migration disaster recovery system and backup dynamic migration method |
| CN111858437A (en) * | 2020-07-31 | 2020-10-30 | 上海海得控制系统股份有限公司 | Hot plug processing method and device based on double buses, storage medium and electronic equipment |
| CN112928729A (en) * | 2019-12-06 | 2021-06-08 | 国网上海市电力公司 | Station domain protection measurement and control integrated device supporting hot plug management |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570908U (en) * | 2009-12-11 | 2010-09-01 | 中国电力科学研究院 | Monitoring and protecting device of DS (data-sharing) centralized-digitized transformer station |
| CN201937334U (en) * | 2010-12-01 | 2011-08-17 | 许继集团有限公司 | Centralized type protecting, overhauling and mistaken-operation-preventing system |
| CN103200280A (en) * | 2013-02-20 | 2013-07-10 | 中国电力科学研究院 | Process level interface device of intelligent substation |
| CN107404111A (en) * | 2017-09-12 | 2017-11-28 | 南京国电南自电网自动化有限公司 | A kind of the protection measurement and control integration device and its method of work of the maintenance that can not have a power failure |
| CN107907760A (en) * | 2017-10-30 | 2018-04-13 | 许继电气股份有限公司 | A kind of electric system distributed intelligent I/O Interface device and TT＆C system |
-
2018
- 2018-09-30 CN CN201811156537.1A patent/CN109245301A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570908U (en) * | 2009-12-11 | 2010-09-01 | 中国电力科学研究院 | Monitoring and protecting device of DS (data-sharing) centralized-digitized transformer station |
| CN201937334U (en) * | 2010-12-01 | 2011-08-17 | 许继集团有限公司 | Centralized type protecting, overhauling and mistaken-operation-preventing system |
| CN103200280A (en) * | 2013-02-20 | 2013-07-10 | 中国电力科学研究院 | Process level interface device of intelligent substation |
| CN107404111A (en) * | 2017-09-12 | 2017-11-28 | 南京国电南自电网自动化有限公司 | A kind of the protection measurement and control integration device and its method of work of the maintenance that can not have a power failure |
| CN107907760A (en) * | 2017-10-30 | 2018-04-13 | 许继电气股份有限公司 | A kind of electric system distributed intelligent I/O Interface device and TT＆C system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034610A (en) * | 2019-05-10 | 2019-07-19 | 国家电网有限公司 | A kind of transformer station measurement and control device redundancy configuration method and system |
| CN112928729A (en) * | 2019-12-06 | 2021-06-08 | 国网上海市电力公司 | Station domain protection measurement and control integrated device supporting hot plug management |
| CN111769983A (en) * | 2020-06-22 | 2020-10-13 | 北京紫玉伟业电子科技有限公司 | Signal processing task backup dynamic migration disaster recovery system and backup dynamic migration method |
| CN111858437A (en) * | 2020-07-31 | 2020-10-30 | 上海海得控制系统股份有限公司 | Hot plug processing method and device based on double buses, storage medium and electronic equipment |
| CN111858437B (en) * | 2020-07-31 | 2022-06-28 | 上海海得控制系统股份有限公司 | Hot plug processing method and device based on double buses, storage medium and electronic equipment |
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Application publication date: 20190118 |