CN1595764A - Swap-free optical fiber multiplexing apparatus for relaying protection - Google Patents

Swap-free optical fiber multiplexing apparatus for relaying protection Download PDF

Info

Publication number
CN1595764A
CN1595764A CNA2004100496304A CN200410049630A CN1595764A CN 1595764 A CN1595764 A CN 1595764A CN A2004100496304 A CNA2004100496304 A CN A2004100496304A CN 200410049630 A CN200410049630 A CN 200410049630A CN 1595764 A CN1595764 A CN 1595764A
Authority
CN
China
Prior art keywords
processing unit
logical processing
signal
optical
optical fiber
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.)
Granted
Application number
CNA2004100496304A
Other languages
Chinese (zh)
Other versions
CN1310445C (en
Inventor
徐刚
伍叶凯
陈秋荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Sifang Engineering Co Ltd
Original Assignee
Beijing Sifang Automation Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Sifang Automation Co Ltd filed Critical Beijing Sifang Automation Co Ltd
Priority to CNB2004100496304A priority Critical patent/CN1310445C/en
Publication of CN1595764A publication Critical patent/CN1595764A/en
Application granted granted Critical
Publication of CN1310445C publication Critical patent/CN1310445C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/124Systems 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

Landscapes

  • Optical Couplings Of Light Guides (AREA)
  • Optical Communication System (AREA)

Abstract

The invention discloses an optical fiber channel multi-tapping device in no need of plug and draw, used for relay protection, including: many photoelectric modules to convert the received optical signal to an electric signal and vice versa; a logic processing unit to select the needed channel by the control of a stroke control signal; a control and display unit to generate a stroke control signal and display by a display unit. It introduces line-side and bypass-side optical fibers in advance, and its bypass protector can communicate with opposite-side protector. It need not plug and draw the optical fiber, and in the photoelectric and electrooptical converting course, it can compensate optical power losses generated by optical fiber channel transmission.

Description

The swap-free optical-fibre channel multi-path tapping device that is used for relaying protection
Technical field
The present invention relates to be used for the device of relaying protection, relate more specifically to be used for the channel drop device of the optical-fibre channel of relaying protection.
Background technology
In relay protection of power system and automatic field; utilize optical-fibre channel to constitute the remote information exchange of electric power line longitudinal coupling current differential protection or realization automatic safety device; be widely used; in the operation of power networks during with by-pass switch band line switching, the situation that needs to switch optical-fibre channel is also more and more.At present, at the electric power system scene, the implementation method that optical-fibre channel is switched mainly contains: plug tail optical fiber method, optical switch switch method, the PCM time slot switches method, fiber termination box connection.
1, plug tail optical fiber method is a kind of optical channel changing method that relatively early occurs, and is the optical fiber (generally being tail optical fiber) by being connected to device, takes off from this device optical channel, is connected to a kind of method that needs device for switching to get on.This method needs artificial plug optical fiber, still has a lot of occasions to use this method now.
2, the fiber termination box connection is come by the change of plug tail optical fiber method in fact.Designed a kind of fiber termination box, the optical fiber (tail optical fiber) of preparing device for switching all has been connected to a side of this fiber termination box.The fiber termination box opposite side is used for short circuit, when needing to connect two devices, this side with optical fiber short circuit on.
3, optical switch switching method uses optical switch to realize.Optical switch is the optical transmission line switching device, and mechanical type and on-mechanical formula two classes are arranged.This method does not reach as yet and popularize the stage of using, and price is very expensive because technology and technical restriction also are in laboratory stage, does not still have the example that uses.
4, the PCM time slot switches method by resetting communication software, and the sequential of distributing to original device is distributed to destination device, realizes the reallocation of passage.This scheme needs Communication Personnel's cooperation, and can only be applicable to the fiber optic protection of multiplexing PCM.Also there is not at present example by this scheme realization.
Plug tail optical fiber and fiber termination box connection all adopt the armstrong's patent formula to switch optical cable, and under these two kinds of modes of operation, each switching channel all needs manually to plug optical fiber, and operating mistake easily takes place complicated operation; Cause the optical fiber splice damage during plug optical fiber easily, make fiber alignment inaccurate, Optical Fiber Transmission is undesired, ultimate attainment replacing optical fiber or the optical fiber adapter of needing; Whether behind each plug optical fiber, whether all need to carry out the light signal test normal with check light decay consumption to check passage to connect with the luminous power test, and process is loaded down with trivial details, and all need on-the-spot preparation optical channel checkout equipment.
Summary of the invention
The objective of the invention is to overcome the defective that above-mentioned prior art exists, propose a kind of swap-free optical-fibre channel multi-path tapping device that is used for relaying protection.The described swap-free optical-fibre channel multi-path tapping device that is used for relaying protection realizes that by the following technical solutions described device comprises:
A plurality of photoelectric conversion modules, this modular converter is connected with Logical processing unit, and the light signal that is used for receiving is converted to the signal of telecommunication of delivering to Logical processing unit and will will be the light signal that sends out from the electrical signal conversion of Logical processing unit;
A Logical processing unit, this Logical processing unit is connected with described a plurality of opto-electronic conversion moulds, is used for selecting under the control of gating control signal the passage of needs;
Control and display unit for one, this control is connected with Logical processing unit with display unit, is used to produce the signal that the passage of needs is selected in control, and shows by display unit.
A kind of swap-free optical-fibre channel multi-path tapping device that is used for relaying protection of the present invention is introduced line side and bypass side optical fibers in advance, when bypass band circuit by the button selector channel, make bypass protection can with the communication of offside protective device.Need not plug optical fiber, light signal (input) is being converted to the signal of telecommunication, be in the process of light signal (output) with electrical signal conversion again, can the optical power loss through optical-fibre channel transmission back generation be compensated.
Description of drawings
Fig. 1 is the formation block diagram of optical-fibre channel multi-path tapping device of the present invention;
Fig. 2 is the formation schematic diagram of Logical processing unit among Fig. 1;
Fig. 3 is an optical-fibre channel multi-path tapping device occupation mode schematic diagram of the present invention;
Fig. 4 is the mode schematic diagram that optical-fibre channel multi-path tapping device of the present invention adopts cascade.
Embodiment
Fig. 1 is the formation block diagram of optical-fibre channel multi-path tapping device of the present invention.As shown in Figure 1, the described swap-free optical-fibre channel multi-path tapping device that is used for relaying protection realizes that by the following technical solutions described device comprises:
A plurality of photoelectric conversion modules, this modular converter is connected with Logical processing unit, and the light signal that is used for receiving is converted to the signal of telecommunication of delivering to Logical processing unit and will will be the light signal that sends out from the electrical signal conversion of Logical processing unit;
A Logical processing unit, this Logical processing unit is connected with described a plurality of opto-electronic conversion moulds, is used for selecting under the control of gating control signal the passage of needs;
Control and display unit for one, this control is connected with Logical processing unit with display unit, is used to produce the signal that the passage of needs is selected in control, and shows by display unit.
Optical-fibre channel involved in the present invention all refers to duplex channel, and promptly each passage all has two optical fiber of sending and receiving.Main thought of the present invention is that light signal is converted to the signal of telecommunication, according to the selector switch of passage, carries out channel allocation in the signal of telecommunication, and then is converted to light signal.Photoelectric conversion module is selected in requirement according to light signal.The indicator light of display unit is provided by optical-electric module, to show corresponding passage just at transmitting optical signal, also indicates which passage selected simultaneously.As shown in Figure 1, wherein the optical transceiver module of a plurality of photoelectric conversion modules " photoelectric conversion module N01 "~" photoelectric conversion module N08 " is that light signal with 8 passages such as N01~N08 is converted to the signal of telecommunication, and these signals of telecommunication are connected on the Logical processing unit of device inside, " photoelectric conversion module N11 " is that the light signal with this 1 passage of N11 is converted to the signal of telecommunication and is connected on the internal logic processing unit.K01~K08 is 8 toggle switchs of expression control unit in control and the display unit, and L01~L08 is 8 light-emitting diodes of display unit, and K01~K08, L01~L08 are arranged on the panel, and these 8 passages of they and N01 to N08 are corresponding.When desire is connected this passage of certain passage and N11 among N01~N08, only need the corresponding toggle switch of this passage is beaten in the position of " ON ", the corresponding switch of rest channels is beaten in the position of " OFF " and is got final product.After this passage and the conducting of N11 passage, L01~L08 neutralizes its corresponding light-emitting diode will be luminous.
Fig. 2 is the formation schematic diagram of Logical processing unit among Fig. 1.As shown in Figure 2, Logical processing unit adopts current advanced person's large scale integrated circuit EPLD (Erasable Programmable Logic Device: the erasable programmable Logical processing unit).In this Logical processing unit, two multi channel selecting modules and an index signal generation module have been designed, as shown in Figure 2.This index signal generation module provides the signal of demonstration for display unit, for N01~N08 and these nine passages of N11, each passage has three signals to connect with Logical processing unit, collect mail number, signal and do not have light signal, collect mail number and signal and received by the light of each photoelectric conversion module respectively and light is sent out the signal of telecommunication that is transformed into, no light signal is that photoelectric conversion module transmits an information of indicating this module whether to work.Multi channel selecting module MUX1 is for receiving multi channel selecting, the one end connects the receipts of each passage of N01~N08, one end connects sending out of N11 passage, the positional information of the K01~K08 that transmits according to device is carried out gating and is received passage, and multi channel selecting device MUX2, then be responsible for the passage of N01~N08, the same MUX1 of function.
Fig. 3 is the occupation mode schematic diagram of optical-fibre channel multi-path tapping device of the present invention.Protective relaying device Z11 is by the design's " optical-fibre channel multi-path tapping device " and protective relaying device Z01~Z08 communication.The transmitting-receiving of the optical-fibre channel of protective relaying device Z11, Z01~Z08 is connected with the transmitting-receiving of N11, the N01~N08 optical-fibre channel of " optical-fibre channel multi-path tapping device " of the present invention respectively.When selecting certain passage N0i (i=1~8) by K01~K08 on the optical-fibre channel multi-path tapping device panel, protective relaying device Z11 just with protective relaying device Z01~Z08 in Z0i (i=1~8) carry out communication.
Fig. 4 is the schematic diagram that optical-fibre channel multi-path tapping device of the present invention adopts cascade system.As shown in Figure 4, when more than more than 8 the time, being adopted the mode of cascade to expand by the protective relaying device of gating.Optical-fibre channel multi-path tapping device G01 and G02 are two identical optical-fibre channel multi-path tapping devices among Fig. 4, and Z01~Z015 is the protective relaying device of desiring by gating, and Z11 be will and Z01~Z015 in some gatings that needs.Design Z11 is connected on the N11 passage of G01, and Z01~Z07 is connected on N01~N07 of G01, and the G02 that is used for cascade is connected to the N08 passage of G01 by itself N11, and Z08~Z015 is connected on N01~N08 passage of G02.When certain communication in Z11 needs and the Z01~Z07 device, toggle switch K01~K07 that it is corresponding beats in the position of " ON ", and other toggle switchs on the G01 are beaten the position at " OFF ".The toggle switch of G02 device can be provided with.Desire and certain of Z08~Z015 when installing Z0i (i=8~15) communication as Z11, the K08 of G01 is beaten in " ON " position, all the other toggle switchs of G01 are beaten in " OFF " position, beating in " ON " position in the corresponding toggle switch of Z0i on the while G02, other toggle switchs on the G02 are beaten in " OFF " position.

Claims (2)

1, a kind of swap-free optical-fibre channel multi-path tapping device that is used for relaying protection is characterized in that described device comprises:
A plurality of photoelectric conversion modules, this modular converter is connected with Logical processing unit, and the light signal that is used for receiving is converted to the signal of telecommunication of delivering to Logical processing unit and will will be the light signal that sends out from the electrical signal conversion of Logical processing unit;
A Logical processing unit, this Logical processing unit is connected with described a plurality of opto-electronic conversion moulds, is used for selecting under the control of gating control signal the passage of needs;
Control and display unit for one, this control is connected with Logical processing unit with display unit, is used to produce the signal that the passage of needs is selected in control, and shows by display unit.
2, device according to claim 1 is characterized in that, described Logical processing unit is the erasable programmable Logical processing unit, in this Logical processing unit, has comprised two multi channel selecting modules and an index signal generation module.
CNB2004100496304A 2004-06-22 2004-06-22 Swap-free optical fiber multiplexing apparatus for relaying protection Expired - Lifetime CN1310445C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2004100496304A CN1310445C (en) 2004-06-22 2004-06-22 Swap-free optical fiber multiplexing apparatus for relaying protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2004100496304A CN1310445C (en) 2004-06-22 2004-06-22 Swap-free optical fiber multiplexing apparatus for relaying protection

Publications (2)

Publication Number Publication Date
CN1595764A true CN1595764A (en) 2005-03-16
CN1310445C CN1310445C (en) 2007-04-11

Family

ID=34665790

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004100496304A Expired - Lifetime CN1310445C (en) 2004-06-22 2004-06-22 Swap-free optical fiber multiplexing apparatus for relaying protection

Country Status (1)

Country Link
CN (1) CN1310445C (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101969341A (en) * 2010-09-29 2011-02-09 江苏省电力公司常州供电公司 Optical path switching interface mechanism for fiber channel test of relay protection device
CN103888186A (en) * 2010-09-29 2014-06-25 江苏省电力公司常州供电公司 Light path interface switching mechanism applied to relay protection device and used for optical fiber channel testing
CN103929246A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Working method of optical path switching interface mechanism for optical fiber channel test of relay protection device
CN103929243A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Optical path interface switchover mechanism for fiber channel test
CN103929240A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Work method of optical path switching interface mechanism of relay protection device
CN103929245A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Working method of optical path switching interface mechanism for tests of relay protection device
CN103929242A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Operating method of optical path interface switchover mechanism for fiber channel test
CN103929235A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Optical path switching interface mechanism used for fiber channel test of relay protection device
CN103929238A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Work method of optical path switching interface mechanism used for test of relay protection device
CN103929241A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Work method of optical path interface switching mechanism used for optical fiber channel test
CN104243017A (en) * 2010-09-29 2014-12-24 江苏省电力公司常州供电公司 Light path switching interface mechanism applied to relay protection device in fiber channel test
CN106227098A (en) * 2016-08-25 2016-12-14 许继集团有限公司 Protective relaying device and security isolation control method thereof and control device
CN106980084A (en) * 2017-05-25 2017-07-25 贵州电网有限责任公司电力科学研究院 A kind of test device and method of testing of digital analog integrated protective relaying device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4299780B2 (en) 2002-06-21 2009-07-22 エルジー エレクトロニクス インコーポレーテッド Recording medium having data structure for managing reproduction of video data
KR100620185B1 (en) 2002-06-21 2006-09-01 엘지전자 주식회사 Recording medium having data structure for managing reproduction of video data recorded thereon
KR20040000290A (en) 2002-06-24 2004-01-03 엘지전자 주식회사 Method for managing multi-path data stream of high density optical disc
EP1516332A4 (en) 2002-06-24 2009-07-22 Lg Electronics Inc Recording medium having data structure for managing reproduction of multiple title video data recorded thereon and recording and reproducing methods and apparatuses
WO2004001752A1 (en) 2002-06-24 2003-12-31 Lg Electronics Inc. Recording medium having data structure for managing reproduction of multiple title video data recorded thereon and recording and reproducing methods and apparatuses
KR100665439B1 (en) 2002-10-14 2007-01-04 엘지전자 주식회사 Recording medium having data structure for managing reproduction of multiple audio streams recorded thereon and recording and reproducing methods and apparatuses
WO2004036578A1 (en) 2002-10-15 2004-04-29 Lg Electronics Inc. Recording medium having data structure for managing reproduction of multiple graphics streams recorded thereon and recording and reproducing methods and apparatuses
US7693394B2 (en) 2003-02-26 2010-04-06 Lg Electronics Inc. Recording medium having data structure for managing reproduction of data streams recorded thereon and recording and reproducing methods and apparatuses
US7809775B2 (en) 2003-02-27 2010-10-05 Lg Electronics, Inc. Recording medium having data structure for managing playback control recorded thereon and recording and reproducing methods and apparatuses
CN100397882C (en) 2003-02-28 2008-06-25 Lg电子株式会社 Recording medium having data structure for managing random/shuffle reproduction of video data recorded thereon and recording and reproducing methods and apparatuses
US7620301B2 (en) 2003-04-04 2009-11-17 Lg Electronics Inc. System and method for resuming playback

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59165537A (en) * 1983-03-10 1984-09-18 Nec Corp Light star repeater
CN2580696Y (en) * 2002-09-29 2003-10-15 浙江浙大中控技术有限公司 Photoelectric repeater with function of automatic fault-tolerant during trouble-detecting

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101969341A (en) * 2010-09-29 2011-02-09 江苏省电力公司常州供电公司 Optical path switching interface mechanism for fiber channel test of relay protection device
CN101969341B (en) * 2010-09-29 2014-04-16 江苏省电力公司常州供电公司 Optical path switching interface mechanism for fiber channel test of relay protection device
CN103888186A (en) * 2010-09-29 2014-06-25 江苏省电力公司常州供电公司 Light path interface switching mechanism applied to relay protection device and used for optical fiber channel testing
CN103929246A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Working method of optical path switching interface mechanism for optical fiber channel test of relay protection device
CN103929243A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Optical path interface switchover mechanism for fiber channel test
CN103929239A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Working method of optical path switching interface mechanism for channel test of relay protection device
CN103929244A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Working method of optical path switching interface mechanism of relay protection device
CN103929240A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Work method of optical path switching interface mechanism of relay protection device
CN103929245A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Working method of optical path switching interface mechanism for tests of relay protection device
CN103929242A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Operating method of optical path interface switchover mechanism for fiber channel test
CN103929235A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Optical path switching interface mechanism used for fiber channel test of relay protection device
CN103929238A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Work method of optical path switching interface mechanism used for test of relay protection device
CN103929241A (en) * 2010-09-29 2014-07-16 江苏省电力公司常州供电公司 Work method of optical path interface switching mechanism used for optical fiber channel test
CN104243017A (en) * 2010-09-29 2014-12-24 江苏省电力公司常州供电公司 Light path switching interface mechanism applied to relay protection device in fiber channel test
CN103929241B (en) * 2010-09-29 2016-04-13 江苏省电力公司常州供电公司 A kind of method of work of optical path switching interface mechanism for fiber channel test
CN103929242B (en) * 2010-09-29 2016-06-15 江苏省电力公司常州供电公司 The method of work of optical path switching interface mechanism for fiber channel test
CN103929246B (en) * 2010-09-29 2016-06-15 江苏省电力公司常州供电公司 The method of work of switching-over light path interface agency for the optical-fibre channel of protective relaying device
CN103929235B (en) * 2010-09-29 2016-06-15 江苏省电力公司常州供电公司 A kind of optical path switching interface mechanism for fiber channel test of protective relaying device
CN103929244B (en) * 2010-09-29 2016-06-22 江苏省电力公司常州供电公司 The method of work of the switching-over light path interface agency of protective relaying device
CN103929239B (en) * 2010-09-29 2016-06-22 江苏省电力公司常州供电公司 The Channel Test of the protective relaying device method of work of switching-over light path interface agency
CN103929243B (en) * 2010-09-29 2016-06-29 江苏省电力公司常州供电公司 Optical path switching interface mechanism for fiber channel test
CN103888186B (en) * 2010-09-29 2016-06-29 江苏省电力公司常州供电公司 It is applied to the optical path switching interface mechanism for fiber channel test of protective relaying device
CN103929238B (en) * 2010-09-29 2016-07-06 江苏省电力公司常州供电公司 A kind of method of work of the test switching-over light path interface agency of protective relaying device
CN103929245B (en) * 2010-09-29 2016-08-17 江苏省电力公司常州供电公司 The test method of work of switching-over light path interface agency of protective relaying device
CN104243017B (en) * 2010-09-29 2016-08-17 江苏省电力公司常州供电公司 A kind of optical path switching interface mechanism for fiber channel test being applied to protective relaying device
CN103929240B (en) * 2010-09-29 2016-12-07 江苏省电力公司常州供电公司 A kind of method of work of the switching-over light path interface agency of protective relaying device
CN106227098A (en) * 2016-08-25 2016-12-14 许继集团有限公司 Protective relaying device and security isolation control method thereof and control device
CN106980084A (en) * 2017-05-25 2017-07-25 贵州电网有限责任公司电力科学研究院 A kind of test device and method of testing of digital analog integrated protective relaying device
CN106980084B (en) * 2017-05-25 2023-06-20 贵州电网有限责任公司电力科学研究院 Testing device and testing method for digital-analog integrated relay protection device

Also Published As

Publication number Publication date
CN1310445C (en) 2007-04-11

Similar Documents

Publication Publication Date Title
CN1310445C (en) Swap-free optical fiber multiplexing apparatus for relaying protection
CN206332672U (en) A kind of fiber optic protection monitoring device and its application circuit
CN114124288B (en) All-optical switching communication system and method based on optical fiber coding addressing
CN101217312B (en) An optical interface test fixture, test method and system
CN101917229B (en) Self-healing high-capacity optical fiber sensor network based on optical delay
CN202837626U (en) Multipath fiber demultiplexer
CN201167326Y (en) Ethernet optical fibre transceiver
CN218601846U (en) Airborne optical fiber video shunting equipment
CN218848394U (en) Photoelectric hybrid splitter
CN215682291U (en) Optical signal transmission device based on PON technology
CN209608660U (en) Communication module and KVM switching equipment, system for KVM switching equipment
CN214177314U (en) Photoelectric integrated fiber jumping device for optical distribution equipment
CN212572561U (en) 5G forwarding equipment based on pure passive WDM technology
CN203617998U (en) Optical transceiver
CN207801943U (en) A kind of list multimode universal optical fibre transceiver
CN202475660U (en) Video signal transmitting and selecting device
CN110149149A (en) Communication module and KVM switching equipment, system for KVM switching equipment
CN109831254B (en) Optical fiber repeater system using wavelength division multiplexing technology
CN218679080U (en) Photoelectric fault signal display device
EP0621736B1 (en) Arrangement for transmitting digital information by cable
CN218888540U (en) Network and electric signal conversion and shunt device
CN213210553U (en) Optical fiber power distribution unit with performance monitoring
CN219420766U (en) Multi-station DWDM device optical communication test platform
CN215186754U (en) Four-waveband bidirectional 40Gbps optical communication equipment based on wavelength division multiplexing technology
CN201682510U (en) Ethernet switch capable of providing twenty four 100M optoelectronic multiplex interfaces and two 1000M multiplex interfaces

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: BEIJING SIFANG JIBAO ENGINEERING CO., LTD.

Free format text: FORMER OWNER: BEIJING SIFANG JIBAO AUTOMATION CO., LTD.

Effective date: 20080912

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20080912

Address after: No. four, 9 street, six floor, Beijing, Haidian District

Patentee after: Beijing Sifang Jibao Engineering Technology Co., Ltd.

Address before: No. four, 9 street, information industry base, Haidian District, Beijing

Patentee before: Beijing Sifang Jibao Automation Co., Ltd.

PE01 Entry into force of the registration of the contract for pledge of patent right

Effective date of registration: 20090928

Pledge (preservation): Pledge

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20101214

Granted publication date: 20070411

Pledgee: Bank of Beijing Tsinghua Yuan branch

Pledgor: Beijing Sifang Jibao Engineering Technology Co., Ltd.

Registration number: 2009110000622

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20101214

Granted publication date: 20070411

Pledgee: Bank of Beijing Tsinghua Yuan branch

Pledgor: Beijing Sifang Jibao Engineering Technology Co., Ltd.

Registration number: 2009110000622

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model