CN111009970A - Unattended station loss-connection remote signaling remote transmission device - Google Patents
Unattended station loss-connection remote signaling remote transmission device Download PDFInfo
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- CN111009970A CN111009970A CN201911375204.2A CN201911375204A CN111009970A CN 111009970 A CN111009970 A CN 111009970A CN 201911375204 A CN201911375204 A CN 201911375204A CN 111009970 A CN111009970 A CN 111009970A
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- 230000011664 signaling Effects 0.000 title claims abstract description 61
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 34
- 230000008034 disappearance Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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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
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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
- 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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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses an unattended station offline remote signaling remote transmission device, which is used for solving the problems that in the prior art, a remote signaling communication channel is complex in transmission structure, and communication is interrupted due to the fact that any one of nodes is in failure. The method comprises the following steps: the MCU is electrically connected with the remote signaling source access point, the MCU is electrically connected with the relay, the relay is connected in series into the remote signaling loop and used for controlling the on-off of the remote signaling loop, the MCU is connected with the optical fiber converter, an input/output interface of the optical fiber converter is electrically connected with an input/output interface of the optical fiber converter of another unattended station loss coupling remote signaling device through optical fibers, and the power supply module is respectively connected with the MCU, the relay and the optical fiber converter. The method has the advantages of solving the problem that remote signaling cannot be uploaded after communication of the transformer substation is interrupted, solving the problem that telemechanical signals are sent by mistake, improving the reliability of a power grid monitoring system and realizing the uploading of 'direct-current power supply disappearance' signals.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to an unattended substation offline remote signaling remote transmission device.
Background
The communication interruption of the transformer substation is always a problem of a power grid monitoring system, particularly for an unattended transformer substation, after the communication interruption of the total station, the transformer substation loses monitoring and is in an 'off-line' state, remote signaling cannot be uploaded, inconvenience is brought to operation and maintenance work, even accident expansion is caused, and potential hazards are extremely large.
Referring to fig. 1, the existing substation remote signaling communication channel contains many communication devices, and communication interruption may be caused by a fault of any device, so that the risk of communication interruption is high. The communication interruption of the substation can be caused by the following reasons:
(1) communication interruption caused by disappearance of DC power supply
At present, devices such as a transformer substation measurement and control device, a telecontrol device and an optical transceiver only support the power supply of a direct current power supply, and at present, a transformer substation of 110kV or below only has one set of direct current system, when the direct current system fails, the direct current power supply disappears, communication equipment stops running, and communication is interrupted.
(2) Communication device failure resulting in communication interruption
As can be seen from a network topological diagram of a transformer substation, at present, a plurality of communication devices of the transformer substation are provided, and the total-station communication can be interrupted due to the fault of any one of a measurement and control device, a telemechanical device, a switch and an optical transceiver. Although the substation basically and comprehensively realizes communication between the double telemechanical units and the double dispatching data networks at present, the accident that the telemechanical host fails to be switched to the standby unit still exists.
(3) Communication cable fault resulting in communication interruption
Due to the abundance of communication devices, the number of ethernet twisted pairs and 2M wires (coaxial cables) is as many as tens of, and the quality of cables, the process of connectors, and the like cause cable interruption, which results in communication interruption.
Therefore, there is an urgent need to develop a device that can upload remote signaling without depending on the existing communication channel.
Disclosure of Invention
The embodiment of the invention provides an unattended station offline remote signaling remote transmission device, which is used for solving the problems that in the prior art, a remote signaling communication channel is complex in transmission structure, and communication is interrupted due to the fact that any one of nodes is in failure.
An unattended station offline remote signaling remote transmission device comprises: the system comprises a microprocessing module MCU, a relay, a power supply module and an optical fiber converter; the MCU is electrically connected with the remote signaling source access point, the MCU is electrically connected with the relay, the relay is connected in series into the remote signaling loop and used for controlling the on-off of the remote signaling loop, the MCU is connected with the optical fiber converter, an input/output interface of the optical fiber converter is electrically connected with an input/output interface of the optical fiber converter of another unattended station loss coupling remote signaling device through optical fibers, and the power supply module is respectively connected with the MCU, the relay and the optical fiber converter.
Preferably, the MCU is an STC12C5A60S2 singlechip.
Preferably, the power supply module adopts a rechargeable lithium battery.
Preferably, the fiber optic converter is an RS-485/422 serial-to-multimode fiber optic converter.
The beneficial effects of the invention include: (1) the problem that remote signaling cannot be uploaded after communication of the transformer substation is interrupted is solved; the problem that remote signaling cannot be uploaded after communication of a transformer substation is interrupted is solved, and especially important signals such as fire alarm, direct current system abnormity, total station accident and the like are eliminated, so that hidden dangers are eliminated. (2) The problem of stubborn remote control missending signals is solved, and the reliability of the power grid monitoring system is improved; the double transmission and double confirmation of important signals are realized, the problem of stubborn telemechanical mistransmission signals is solved, the power grid monitoring system is more perfect and reliable, convenience is provided for operation and maintenance work, and the power grid is safer and more reliable in operation. (3) The uploading of a 'direct current power supply disappearance' signal can be realized; because the total station communication is interrupted after the direct current power supply disappears and the signal cannot be uploaded, the direct current power supply disappearance signal cannot be uploaded all the time, so that the dispatching personnel cannot judge the direct current disappearance fault. The signal can now be accessed into the device for uploading. After the device is put into a power grid, the economic loss of the power grid caused by accident expansion due to the fact that remote signaling cannot be uploaded after communication interruption of a transformer substation can be greatly reduced.
Drawings
Fig. 1 is a network topology diagram (remote signaling communication channel) of a transformer substation in the prior art;
fig. 2 is a schematic structural diagram of an unattended station offline remote signaling remote transmission device in the embodiment of the present invention;
fig. 3 is a schematic structural diagram of an unattended station offline remote signaling remote transmission device applied to a transformer substation in the embodiment of the present invention.
Detailed Description
In order to provide a scheme for realizing remote signaling mutual transmission by utilizing two substations without depending on an original remote signaling communication channel, the preferred embodiment of the invention is described below with reference to the attached drawings of the specification.
Referring to fig. 2, an unattended station offline remote signaling remote transmission device includes: the system comprises a microprocessing module MCU1, a relay 2, a power supply module 3 and an optical fiber converter 4; MCU1 is opened with the remote signalling source and is gone into the contact electricity and be connected, MCU1 is connected with relay 2 electricity, relay 2 concatenates the break-make that the remote signalling return circuit is used for controlling the remote signalling return circuit, MCU1 is connected with optical fiber converter 4, the input/output interface of optical fiber converter 4 passes through optic fibre and is connected with the input/output interface electricity of optical fiber converter 4 of another unmanned on duty station loss connection remote signalling teletransmission device, power module 3 is connected with MCU1, relay 2 and optical fiber converter 4 respectively.
The MCU1 is an STC12C5A60S2 single-chip microcomputer, the power supply module 3 adopts a rechargeable lithium battery, the optical fiber converter 4 is from an RS-485/422 serial port to the multimode optical fiber converter 4, and the relay 2 adopts an HK43F relay 2.
The structure and use of the unattended station offline remote signaling remote transmission device are described in detail below.
The unattended station loss-of-contact remote signaling remote transmission device uses the MCU1 as a core of the device to collect and transmit remote signaling, the MCU1 closes the relay 2 after receiving the remote signaling signal, the remote signaling loop is conducted, the MCU1 converts the remote signaling signal into an optical signal through the optical fiber converter 4 after performing analog-to-digital conversion on the remote signaling signal, and transmits the optical signal to the unattended station loss-of-contact remote signaling remote transmission device of the opposite-side transformer substation through a special optical fiber channel.
Referring to fig. 3, the unattended substation offline remote signaling remote transmission devices are used in pairs, remote signaling transmitting and receiving ends of two substations which are each other are respectively installed in the substation a and the substation B, when the communication of one substation a is interrupted, a remote signaling source of the substation a is connected with the MCU1, a remote signaling signal is transmitted to the MCU1 for processing, and a remote signaling source node is connected with a measurement and control device, which is a connection mode in the prior art; the unattended station loss remote signaling remote transmission device A of the transformer substation A is transmitted to the unattended station loss remote signaling remote transmission device B of the transformer substation B through the special optical fiber channel to receive a remote signaling signal of the transformer substation A, and after the MCU1 of the unattended station loss remote signaling remote transmission device B receives the remote signaling signal, the relay 2 is closed to conduct a remote signaling loop and is uploaded to a dispatching center through a measurement and control device of the transformer substation B through a communication channel of the transformer substation B. Similarly, the remote signaling signal of the B station can also be uploaded through the communication channel of the A station by the method.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. An unattended station offline remote signaling remote transmission device is characterized by comprising: the system comprises a microprocessing module MCU, a relay, a power supply module and an optical fiber converter; the MCU is electrically connected with the remote signaling source access point, the MCU is electrically connected with the relay, the relay is connected in series into the remote signaling loop and used for controlling the on-off of the remote signaling loop, the MCU is connected with the optical fiber converter, an input/output interface of the optical fiber converter is electrically connected with an input/output interface of the optical fiber converter of another unattended station loss coupling remote signaling device through optical fibers, and the power supply module is respectively connected with the MCU, the relay and the optical fiber converter.
2. The unattended station unlink remote signaling remote transmission device according to claim 1, wherein the MCU is an STC12C5a60S2 single chip microcomputer.
3. The unattended station offline remote signaling remote transmission device according to claim 1, wherein the power supply module employs a rechargeable lithium battery.
4. The unattended station unlink remote signaling device according to claim 1, wherein the optical fiber converter is an RS-485/422 serial-to-multimode optical fiber converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375204.2A CN111009970A (en) | 2019-12-27 | 2019-12-27 | Unattended station loss-connection remote signaling remote transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375204.2A CN111009970A (en) | 2019-12-27 | 2019-12-27 | Unattended station loss-connection remote signaling remote transmission device |
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| Publication Number | Publication Date |
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| CN111009970A true CN111009970A (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911375204.2A Pending CN111009970A (en) | 2019-12-27 | 2019-12-27 | Unattended station loss-connection remote signaling remote transmission device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355056A (en) * | 2011-09-13 | 2012-02-15 | 浙江大学 | Method for improving closing reliability of remote-terminal-unit-architecture-based substation |
| CN211349545U (en) * | 2019-12-26 | 2020-08-25 | 国网宁夏电力有限公司中卫供电公司 | Unattended station loss-connection remote signaling remote transmission device |
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2019
- 2019-12-27 CN CN201911375204.2A patent/CN111009970A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355056A (en) * | 2011-09-13 | 2012-02-15 | 浙江大学 | Method for improving closing reliability of remote-terminal-unit-architecture-based substation |
| CN211349545U (en) * | 2019-12-26 | 2020-08-25 | 国网宁夏电力有限公司中卫供电公司 | Unattended station loss-connection remote signaling remote transmission device |
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Application publication date: 20200414 |