CN109274417A - A kind of excitation system channel information exchange method - Google Patents
A kind of excitation system channel information exchange method Download PDFInfo
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- CN109274417A CN109274417A CN201811248085.XA CN201811248085A CN109274417A CN 109274417 A CN109274417 A CN 109274417A CN 201811248085 A CN201811248085 A CN 201811248085A CN 109274417 A CN109274417 A CN 109274417A
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- 230000005284 excitation Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 238000012795 verification Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The present invention provides a kind of excitation system channel information exchange method, the CPU and programmable logic chip of interconnection are respectively set in each channel of excitation system, passes through two groups of optical fiber connections between the programmable logic chip in different channels；Two groups of optical fiber mutual backup automatically switch to another set fiber optic communication when one group of optical fiber disconnects；Information is issued from the CPU of A channel, enters the programmable logic chip of A channel, the programmable logic chip of A channel encodes information according to certain rules, and is converted into serial signal and is sent to channel B by optical fiber；The programmable logic chip of channel B receives the information, is decoded according to corresponding rule, and decoded information is sent after being reduced into prime information to the CPU of channel B, completes the information exchange between A, channel B.The present invention can be effectively carried out the information exchange of excitation system interchannel, reduces a possibility that generating set accident occurs, improves the reliability and safety of entire generating set.
Description
Technical field
The present invention relates to a kind of information interacting methods of generator excited system interchannel, belong to generator excited system skill
Art field.
Background technique
Main control equipment of the excitation system as generator, plays a very important role in the power system.In order to
Enhance the reliability of excitation system, the excitation con-trol mode of binary channels or triple channel is mostly used in industry.But in practical fortune
During row, there is many problems for multichannel, such as: channel information exchange is imperfect；Under one channel crash situation, other
Channel can not identify.Problems have no effect on operation when excitation system works normally, but under special circumstances, often
The failure that will cause generating set seriously endangers the safety of electric system.
Therefore, the information exchange of generator excited system interchannel how is effectively performed, reduces generating set accident hair
A possibility that raw, the reliability and safety of entire generating set are improved, is that those skilled in the art are dedicated to the problem solved.
Summary of the invention
The technical problem to be solved by the present invention is the information that generator excited system interchannel how is effectively performed is handed over
Mutually, a possibility that generating set accident occurs is reduced, the reliability and safety of entire generating set are improved.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of excitation system channel information interaction sides
Method, it is characterised in that: step are as follows:
Step 1: the CPU and programmable logic chip of interconnection being respectively set in each channel of excitation system, difference is logical
Pass through two groups of optical fiber connections between the programmable logic chip in road；Two groups of optical fiber mutual backup are cut automatically when one group of optical fiber disconnects
Shift to another set fiber optic communication；
Step 2: information is set as A channel from certain channel, CPU issue, enter the programmable logic chip of A channel, A
The programmable logic chip in channel encodes information according to certain rules, and is converted into serial signal and is sent by optical fiber
To other channels, it is set as channel B；
The programmable logic chip in the channel step 3:B receives the information, and by received information according to corresponding rule
It is decoded, decoded information is sent after being reduced into prime information to the CPU of channel B, and it is logical to complete A, B for the CPU acquisition information of channel B
Information exchange between road.
Preferably, it is designed using gap phase optical fiber luminescent, when certain channel power loss, can be sent out with the channel attached optical fiber
Light makes other channel perception failure at the first time；If it is operation channel power loss, then alternate channel presses set sequence immediately
It puts into operation, prevents excitation system out of control.
Preferably, periodically interchannel information is verified.
It is highly preferred that in the following way: channel is periodically from other board acquisition units when verifying to interchannel information
Divide information, to verify to interchannel information；When verification discovery interchannel information is inconsistent, by the way of democracy voting
The channel of timely error out of service.
Compared with prior art, the information interacting method of generator excited system interchannel provided by the invention has and has as follows
Beneficial effect:
1, data are transmitted using optical fiber, can effectively inhibits the interference of electromagnetic field.
2, the bit error rate of data is reduced using fault-tolerant checking algorithm using autonomous high-speed communication protocol；
3, there is power loss handoff functionality, when power down can automatically switch to run channel；
4, double groups of optical fiber mutual backup automatically switch to another set fiber optic communication when one group of optical fiber disconnects, and improve and are
The reliability of system communication；
5, other module informations are introduced, using the scheme of voting, identify the validity of channel data, improve data biography
Defeated accuracy.
Detailed description of the invention
Fig. 1 is the information interacting method schematic diagram of generator excited system interchannel provided in this embodiment；
Fig. 2 is information interactive process schematic diagram.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Fig. 1 is the information interacting method schematic diagram of generator excited system interchannel provided in this embodiment, firstly, hardware
On, the scheme of a programmable logic chip is matched using CPU, CPU sends the data of exchange to by parallel bus programmable
Logic chip realizes the processing such as coding, decoding and verification of data by programmable logic chip, and is sent out data by optical fiber
It send to other channels.As seen from Figure 1, external information interaction is by the way of two groups of optical fiber each other adapted, one group of optical fiber
When disconnection, another set optical fiber is automatically switched to by programmable logic chip.Due to using fiber medium to carry out signal transmission, have
Effect inhibits the influence of electromagnetic interference, and the reliability of generating set greatly improved.
From software view, it is the design using gap phase optical fiber luminescent first, decision problem when power loss can be solved, i.e.,
Certain channel power loss, channel in addition can perceive failure at the first time, if it is operation channel power loss, then alternate channel will immediately
It puts into operation by set sequence, prevents excitation system out of control.Second and the most key technology, it uses from main coding, solution
The technologies such as code and verification, information issue from certain channel C PU, enter programmable logic chip, use in programmable logic chip
From the algorithm of main coding, information is encoded according to certain rules, and be converted into serial signal and be sent to other channels,
The programmable logic chip in other channels will be decoded, decoded information is also after receiving information according to corresponding algorithm
Original after prime information at sending to the CPU in the channel, and CPU obtains the information exchange completed after information between channel, as shown in Figure 2.
Finally, and a very important supplement, by introducing the information of other boards, to carry out the information of interchannel
Monitoring, can solve the problems, such as the missing of information judgment basis under partial picture.Specific practice is: channel timing, at a slow speed from other
Board fetching portion information functions as to verify to interchannel information and increases an information monitoring function, in this way
The correctness that can effectively identify channel information, when inconsistent using democracy voting by the way of error out of service in time channel,
It prevents from leading to the failure of generating set because of incorrect information.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (4)
1. a kind of excitation system channel information exchange method, which is characterized in that step are as follows:
Step 1: the CPU and programmable logic chip of interconnection are respectively set in each channel of excitation system, different channels
Pass through two groups of optical fiber connections between programmable logic chip；Two groups of optical fiber mutual backup automatically switch to when one group of optical fiber disconnects
Another set fiber optic communication；
Step 2: information is set as A channel from certain channel, CPU issue, enter the programmable logic chip of A channel, A channel
Programmable logic chip information is encoded according to certain rules, and be converted into serial signal and it be sent to by optical fiber
His channel, is set as channel B；
The programmable logic chip in the channel step 3:B receives the information, and received information is carried out according to corresponding rule
Decoding, decoded information, which is reduced into after prime information to send to the CPU of channel B, the CPU of channel B, obtains information, complete A, channel B it
Between information exchange.
2. a kind of excitation system channel information exchange method as described in claim 1, it is characterised in that: use gap phase optical fiber
Luminescent designs can shine when certain channel power loss with the channel attached optical fiber, and other channel is made to perceive event at the first time
Barrier；Prevent excitation system out of control then alternate channel puts into operation by set sequence immediately if it is operation channel power loss.
3. a kind of excitation system channel information exchange method as claimed in claim 1 or 2, it is characterised in that: periodically to channel
Between information verified.
4. a kind of excitation system channel information exchange method as claimed in claim 3, it is characterised in that: to interchannel information into
When row verification, in the following way: channel timing is from other board fetching portion information, to verify to interchannel information；
When verification discovery interchannel information is inconsistent, the channel of error out of service in time by the way of democracy voting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248085.XA CN109274417A (en) | 2018-10-25 | 2018-10-25 | A kind of excitation system channel information exchange method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248085.XA CN109274417A (en) | 2018-10-25 | 2018-10-25 | A kind of excitation system channel information exchange method |
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| Publication Number | Publication Date |
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| CN109274417A true CN109274417A (en) | 2019-01-25 |
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| CN201811248085.XA Withdrawn CN109274417A (en) | 2018-10-25 | 2018-10-25 | A kind of excitation system channel information exchange method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020080440A1 (en) * | 2000-03-07 | 2002-06-27 | Corning Incorporated | Protection switch in a single two-fiber optical channel shared protection ring |
| CN101179334A (en) * | 2006-11-09 | 2008-05-14 | 英保达股份有限公司 | Optical fiber network spare channel switching control device |
| CN103795458A (en) * | 2013-11-27 | 2014-05-14 | 国家电网公司 | Optical fiber switching protection system and control method thereof |
| CN105445522A (en) * | 2015-12-03 | 2016-03-30 | 山东电力设备有限公司 | High reliability all-fiber current transformer |
| CN206481302U (en) * | 2016-11-22 | 2017-09-08 | 广州汇信特通信技术股份有限公司 | A kind of fibre circuit protector for preparing and carrying fine detection |
| CN207490800U (en) * | 2017-11-10 | 2018-06-12 | 河北大唐国际王滩发电有限责任公司 | A kind of generator excitation adjusting device with High redundancy |
-
2018
- 2018-10-25 CN CN201811248085.XA patent/CN109274417A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020080440A1 (en) * | 2000-03-07 | 2002-06-27 | Corning Incorporated | Protection switch in a single two-fiber optical channel shared protection ring |
| CN101179334A (en) * | 2006-11-09 | 2008-05-14 | 英保达股份有限公司 | Optical fiber network spare channel switching control device |
| CN103795458A (en) * | 2013-11-27 | 2014-05-14 | 国家电网公司 | Optical fiber switching protection system and control method thereof |
| CN105445522A (en) * | 2015-12-03 | 2016-03-30 | 山东电力设备有限公司 | High reliability all-fiber current transformer |
| CN206481302U (en) * | 2016-11-22 | 2017-09-08 | 广州汇信特通信技术股份有限公司 | A kind of fibre circuit protector for preparing and carrying fine detection |
| CN207490800U (en) * | 2017-11-10 | 2018-06-12 | 河北大唐国际王滩发电有限责任公司 | A kind of generator excitation adjusting device with High redundancy |
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Application publication date: 20190125 |
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