CN201629606U - Protection system for power line - Google Patents
Protection system for power line Download PDFInfo
- Publication number
- CN201629606U CN201629606U CN2010201295197U CN201020129519U CN201629606U CN 201629606 U CN201629606 U CN 201629606U CN 2010201295197 U CN2010201295197 U CN 2010201295197U CN 201020129519 U CN201020129519 U CN 201020129519U CN 201629606 U CN201629606 U CN 201629606U
- Authority
- CN
- China
- Prior art keywords
- communication
- equipment
- protective relaying
- digital hierarchy
- optical interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004891 communication Methods 0.000 claims abstract description 60
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 42
- 230000003287 optical effect Effects 0.000 claims description 38
- 239000000835 fiber Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000009432 framing Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a protection system for a power line, and relates to the field of power equipment and communication, which is used for solving the problem of the prior art that a uniform interface standard does not exist between relay protection apparatus and communication SDH equipment. The system comprises two sits, wherein each site comprises the relay protection apparatus and the communication SDH equipment mutually connected through an optical fiber cable; and the two sits are communicated through the communication SDH equipment. The utility model unifies the interface between the relay protection apparatus and the communication SDH equipment and removes a conversion equipment between both, thereby solving the problem associated with the prior art.
Description
Technical field
The utility model relates to the power equipment and the communications field, particularly relates to a kind of power line protection system.
Background technology
Current, use more and more widely based on the electric power system fiber optic protection of 2M communication interface, on 220kV, 500kV circuit all as main the means of relay protection.Protective relaying device and communication synchronization digital hierarchy (SDH Synchronous Digital Hierarchy) equipment be connected signal referring to shown in Figure 1, between protective relaying device and communication SDH device, need to increase conversion equipment (as MUX2M etc.) and realize Interface Matching.Because this third party's protocol conversion apparatus does not have unified interface standard, under this kind operational mode, its fault might cause the relaying protection tripping, bring very big potential safety hazard to operation of power networks; Simultaneously, in service in actual electric network, this conversion equipment also exist network management monitoring less than, power supply, unified ground connection reliability are difficult to ensure that wiring, malfunction elimination, debug difficulties take variety of problems such as a large amount of machine rooms space.
The utility model content
The utility model provides a kind of power line protection system, in order to solve the problem that does not have the unified interface standard in the prior art between the protective relaying device and communication SDH device.
A kind of power line protection of the present utility model system comprises: two websites; Each described website is by forming by mutual direct-connected protective relaying device and the communication synchronization digital hierarchy equipment of optical fiber cable; Communicate by letter by described communication synchronization digital hierarchy equipment between two websites.
Further, comprise optical interface in the protective relaying device, comprise optical interface in the communication synchronization digital hierarchy equipment; The optical interface of the optical interface of protective relaying device and communication synchronization digital hierarchy equipment passes through fiber direct connection.
The utility model beneficial effect is as follows:
Because the utility model is unified with the interface between protective relaying device and the communication SDH device, has removed conversion equipment therebetween, so solved the problem that prior art exists.
Description of drawings
Fig. 1 is for having protective device and communication SDH device now by the conversion equipment connection diagram;
Fig. 2 is the system configuration schematic diagram among the utility model embodiment;
Fig. 3 is protective relaying device 2M optical interface and the interconnected schematic diagram of communication SDH device 2M optical interface among the utility model embodiment.
Embodiment
Because conversion equipment does not have unified interface standard, under this kind operational mode, its fault might cause the relaying protection tripping, bring very big potential safety hazard to operation of power networks in order to solve; Simultaneously, in service in actual electric network, this conversion equipment also exist network management monitoring less than, power supply, unified ground connection reliability are difficult to ensure that wiring, malfunction elimination, debug difficulties take variety of problems such as a large amount of machine rooms space.The inventor thinks and is necessary protective relaying device and communication SDH device 2M optical interface are studied, and makes protective relaying device and communication SDH device 2M optical interface adopt unified light interface technology standard, comprises the standard of physical layer and data link layer.In operation of power networks, progressively promote, remove off-gauge conversion equipment, realize that protective relaying device directly is connected by optical interface with communication SDH device, and then overcome the above problems.Below be described in further detail.
Referring to shown in Figure 2, the system among the utility model embodiment comprises two websites, as A, B website; Each website is by forming by optical fiber cable 1 mutual direct-connected protective relaying device 2 and communication SDH device 3; Communicate by letter by communication SDH device 3 between two websites.
More specifically, referring to shown in Figure 3, optical fiber cable 1 is made up of optical interface 11 and optical fiber 12, comprises optical module 111 and circuit module 112 in the optical interface 11 again; Comprise in the protective relaying device 2: the protective relaying device circuit module 21 and the optical interface 11 (can be the 2M optical interface) that link to each other; Comprise in the communication SDH device 3: the communication SDH device circuit module 31 and the optical interface 11 (can be the 2M optical interface) that link to each other; The optical interface 11 of protective relaying device and the optical interface 11 of communication SDH device are direct-connected by optical fiber 12 (fiber type can adopt G.652 monomode fiber), and then protective relaying device 2 is connected with communication SDH device 3.
In specific implementation, the utility model is implemented by following key step:
S1, transmitting terminal protective relaying device convert light signal to after guard signal is encoded again, and pass through the optical channel direct sending to the transmitting terminal communication SDH device.
S2, transmitting terminal communication SDH device send light signal to receiving terminal.
S3, receiving terminal communication SDH device receiving optical signals.
S4, receiving terminal communication SDH device by optical channel with the light signal direct sending to the receiving terminal protective relaying device, and be decoded as guard signal by the receiving terminal protective relaying device.
More specifically, A station protective device sends guard signal, and this guard signal is converted to light signal again behind the protective device coding of A station;
This light signal arrives A station communication SDH device by optical channel direct sending (as: fiber direct connection);
A station communication SDH device is before receiving terminal sends light signal, from the light signal of receiving, extract clock information, further this light signal is carried out analysis and judgement according to clock information, generate the corresponding signal of telecommunication, use A station communication SDH device system clock to carry out internal signal then and handle, as bit rate adjustment, processing such as multiplexing.
Light signal after A station communication SDH device will be handled sends to B station communication SDH device by communication port;
B station communication SDH device was carried out internal signal accordingly and is handled, as processing such as bit rate adjustment, demultiplexings before sending light signal to B station protective device.
Light signal after B station communication SDH device will be handled arrives B station protective device by optical channel direct sending (as: fiber direct connection);
B station protective device is converted to the signal of telecommunication signal that is protected of decoding again to this light signal.
It is as the same that B station protective device sends guard signal to A station protective device, repeats no more.
Optical interface described in the foregoing description or optical channel, its parameter standard is as shown in the table.
| Parameter | Unit | Numerical value |
| The digital signal nominal bit rate | kb/s | 2048±50ppm |
| Application code |
| Parameter | Unit | Numerical value |
| Operating wavelength range | nm | 1260～1360 |
| Transmitter is in S dot characteristics light source type spectral characteristic-maximum RMS width-maximum-20dB width-minimum side mode suppression ratio average transmit power-maximum-minimum minimum extinction ratio | nm nm dB dBm dBm dB | MLM/SLM 7.7 - - -8 -15 8.2 |
| The maximum chromatic dispersion optical cable of optical communication characteristic attenuation scope between S and the R point is maximum discrete reflectance between minimum echo loss (containing any articulation) S that S is ordered and R point | dB ps/nm dB dB | 0～7 18/25 NA NA |
| Receiver is in the poorest sensitivity of R dot characteristics b(BER of 1×10 -10) the maximum optical path power penalty receiver of minimum overload point is at R point maximum reflection coefficient | dBm dBm dB dB | -23 -8 1 NA |
And between above-mentioned transmitting terminal protective relaying device and the transmitting terminal communication synchronization digital hierarchy equipment, and the aspect of the interface between receiving terminal communication synchronization digital hierarchy equipment and the receiving terminal protective relaying device is non-framing.Adopt non-framing mode interface; can guarantee the transparent transmission of communication synchronization digital hierarchy equipment to relay protection signal; the communication synchronization digital hierarchy equipment need not to be concerned about the inter-process mechanism such as code encoding/decoding mode of guard signal; make that optical interface can farthest compatible various protective relaying device, also reduced the development difficulty and the development cost of communication synchronization digital hierarchy equipment and protective relaying device optical interface.Simultaneously, adopt non-framing mode interface, can use the full-time crack of passage link to carry out transfer of data, improve data transmission efficiency.
The light signal that transmits between transmitting terminal protective relaying device and the transmitting terminal communication synchronization digital hierarchy equipment, and the speed of the light signal that transmits between receiving terminal communication synchronization digital hierarchy equipment and the receiving terminal protective relaying device is 2048 ± 50ppm kb/s.Consider and adopt the common 2Mbit/s passage of traditional protection electrical interface between communication synchronization digital hierarchy equipment and the protective relaying device; not only guaranteed the signal transmission bandwidth; satisfy the mutual needs of guard signal between two websites; and kept the general low order transmission rate of communication synchronization digital hierarchy equipment and protective relaying device constant; expand the versatility of technology to a certain extent, also reduced the development difficulty and the development cost of communication synchronization digital hierarchy equipment and protective relaying device optical interface.
The operating wavelength range of light signal is 1260nm to 1360nm.Standard single-mode fiber is in this operating wavelength range inner fiber chromatic dispersion minimum (1310nm is called zero-dispersion wavelength), and loss is low, helps the transmission of light signal.
The clock information that transmitting terminal communication synchronization digital hierarchy equipment extracts from the light signal of receiving; long even " 0 " or the length that can not occur (not comprising 3) more than 3 connect " 1 "; because the light signal that protective relaying device sends is if long " 0 " and long connect " 1 " of connecting; transmitting terminal communication synchronization digital hierarchy equipment can't extract clock; it is poor maybe can to cause extracting clock quality; the main effect of clock is extraction and the judgement to signal message; in digital communication system; the signal that transmits is digitized pulse train; have only good clock quality could guarantee effective identification of signal, and then the guarantee information transmission is accurate with synchronously.So four and above long even " 0 " or long even " 1 " (not comprising three) can not occur; three and following effective identification that could guarantee signal are with synchronously; transmitting terminal communication synchronization digital hierarchy equipment could accurately extract clock information like this; and then utilize clock information to extract the signal that protective relaying device sends; final multiplexing in the frame structure of SDH, be transferred to the opposite end.
To sum up, the utility model is with standard protective relaying device and communication equipment 2M optical interface interconnection technique standard.
In 220KV and above website, progressively promote the use of this optical interface, remove this third party's protocol conversion apparatus, get rid of potential safety hazard, will significantly improve the reliability of electric network protection service operation, further guarantee power grid security, stable operation.
Solve the variety of problems of puzzlement communication for a long time and the interconnection of relaying protection specialty interface, new 2M optical interface will greatly make things convenient for the malfunction elimination of relay protection channel, improve the level and the efficient of operation maintenance.
Discharge the machine room space of a large amount of relaying protection cells and communications equipment room, alleviate the nervous problem in transformer station machine room space to a certain extent.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (3)
1. a power line protection system is characterized in that, comprising: two websites;
Each described website is by forming by mutual direct-connected protective relaying device and the communication synchronization digital hierarchy equipment of optical fiber cable;
Communicate by letter by described communication synchronization digital hierarchy equipment between two websites.
2. power line protection as claimed in claim 1 system is characterized in that, comprises optical interface in the described protective relaying device, comprises optical interface in the communication synchronization digital hierarchy equipment; The optical interface of the optical interface of protective relaying device and communication synchronization digital hierarchy equipment passes through fiber direct connection.
3. power line protection as claimed in claim 2 system is characterized in that described optical fiber is monomode fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201295197U CN201629606U (en) | 2010-03-12 | 2010-03-12 | Protection system for power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201295197U CN201629606U (en) | 2010-03-12 | 2010-03-12 | Protection system for power line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629606U true CN201629606U (en) | 2010-11-10 |
Family
ID=43061005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201295197U Expired - Lifetime CN201629606U (en) | 2010-03-12 | 2010-03-12 | Protection system for power line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629606U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807819A (en) * | 2010-03-12 | 2010-08-18 | 中国南方电网有限责任公司 | Electric line protection system and method for transmitting relay protection signals |
| CN102882592A (en) * | 2012-09-26 | 2013-01-16 | 烽火通信科技股份有限公司 | 2M optical signal transparent transmission device and 2M optical signal transparent transmission method applied to SDH (synchronous digital hierarchy) network |
| CN106877299A (en) * | 2017-04-01 | 2017-06-20 | 国网山东省电力公司信息通信公司 | A kind of 500kV substation relay protections system and its test system, method of testing |
| CN108574528A (en) * | 2017-12-26 | 2018-09-25 | 国网湖北省电力有限公司荆门供电公司 | The special 2M optical interfaces multiplexing channel of protection signal of electric power and application process |
-
2010
- 2010-03-12 CN CN2010201295197U patent/CN201629606U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807819A (en) * | 2010-03-12 | 2010-08-18 | 中国南方电网有限责任公司 | Electric line protection system and method for transmitting relay protection signals |
| CN101807819B (en) * | 2010-03-12 | 2012-06-20 | 中国南方电网有限责任公司 | Electric line protection system and method for transmitting relay protection signals |
| CN102882592A (en) * | 2012-09-26 | 2013-01-16 | 烽火通信科技股份有限公司 | 2M optical signal transparent transmission device and 2M optical signal transparent transmission method applied to SDH (synchronous digital hierarchy) network |
| CN106877299A (en) * | 2017-04-01 | 2017-06-20 | 国网山东省电力公司信息通信公司 | A kind of 500kV substation relay protections system and its test system, method of testing |
| CN106877299B (en) * | 2017-04-01 | 2018-09-18 | 国网山东省电力公司信息通信公司 | A kind of 500kV substation relay protections system and its test system, test method |
| CN108574528A (en) * | 2017-12-26 | 2018-09-25 | 国网湖北省电力有限公司荆门供电公司 | The special 2M optical interfaces multiplexing channel of protection signal of electric power and application process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE495589T1 (en) | POWER LINE COMMUNICATION SYSTEM ON AN AIRPLANE | |
| CN201629606U (en) | Protection system for power line | |
| CN101807819B (en) | Electric line protection system and method for transmitting relay protection signals | |
| CN203352596U (en) | Near-end monitoring equipment, far-end monitoring equipment and distributed base station monitoring system | |
| CN103606908B (en) | It is applicable to the protection system of power grid integrated circuit | |
| CN202837463U (en) | Coaxial-cable test connector | |
| CN1956361B (en) | Implementing method of one-way transmission from Ethernet optical transmitting port to optical transmitting port and its optical fibre transceiver | |
| CN106501579A (en) | Intelligent substation based on time delay can test cross change planes busbar voltage sampling system of selection | |
| CN104882966B (en) | Distribution network automation communication system | |
| CN104935381A (en) | Multichannel Ethernet electric-port-optical-port one-way transmission apparatus | |
| CN2938585Y (en) | Optical fibre access system of multi-service optical fibre transceiver | |
| CN204270713U (en) | A kind of multifunctional optical fiber composite medium-pressure cable | |
| CN204761159U (en) | Distribution network automation communication system | |
| CN202363878U (en) | Pilot protection device for power grid | |
| CN206596007U (en) | Fiber entering household converting system | |
| CN205003841U (en) | Power system fault record wave system all | |
| CN208209961U (en) | A kind of seabed is plugged into box telecommunication system structure | |
| CN207638662U (en) | Service operation condition monitoring system | |
| CN213602644U (en) | Photoelectric converter | |
| CN101359963A (en) | Dual Ethernet optical fiber transceiver, transceiving method and system | |
| CN205565711U (en) | Self -adaptation fiber channel's line protection system | |
| CN203151544U (en) | Multi-communication-method intelligent switching device provided with photoelectric signal transceiving module | |
| CN204539135U (en) | A kind of communications patching recognition device | |
| CN103973551A (en) | Separated home gateway | |
| CN104333413A (en) | Optical cable online monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |