CN112910083A - Full-automatic signal quantity monitor - Google Patents
Full-automatic signal quantity monitor Download PDFInfo
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- CN112910083A CN112910083A CN202011343992.XA CN202011343992A CN112910083A CN 112910083 A CN112910083 A CN 112910083A CN 202011343992 A CN202011343992 A CN 202011343992A CN 112910083 A CN112910083 A CN 112910083A
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- 238000000034 method Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- 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
- 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
- Y04S40/126—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 wireless data transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a full-automatic semaphore monitor, which comprises a Micro Control Unit (MCU), wherein the MCU is respectively connected with a data acquisition module, a signal processing module, a 4G module, a storage module, an alarm module and a touch screen, and the 4G module is connected with a cloud platform through a network; the data acquisition module is used for collecting voltage signals and consists of a contactor and contacts at two ends; the signal processing module processes and converts voltage signals acquired by the data acquisition module into positive and negative pulse waveforms, and the signal processing module comprises a divider resistor, a photoelectric coupler, an amplifier, a follower and an ADC (analog to digital converter), monitors and records the voltage signals in real time through semaphore, and provides reliable basis for troubleshooting.
Description
Technical Field
The invention relates to the technical field of converter station control systems, in particular to a full-automatic semaphore monitor.
Background
A full-automatic semaphore monitor is used for monitoring the existing alternating current signals and direct current signals in real time, recording the change condition and the change time of each semaphore in the running process of a line, displaying the change condition and the change time on a touch screen in a waveform mode, uploading a monitoring result to a server end through wireless connection for storage, when a system breaks down, a worker can log in a server to check monitoring records and quickly find out semaphore abnormal recording points, so that fault analysis and searching are performed, and when the semaphore is abnormal and exceeds a set parameter range, the system sends alarm information to related responsible persons in a short message mode so as to process in time.
The extra-high voltage direct current converter station is easy to generate more complex electromagnetic interference, and under the interference, a converter station control system can receive a large amount of false signals, overrun signals and the like, so that the normal work of the converter station control system is seriously influenced, and even the control system makes wrong judgment or action. And because the field electronic and electric appliances and other equipment are numerous, the interference source cannot be found quickly and accurately for processing, the traditional method is to find the interference source for processing in a large area, however, the method is time-consuming and labor-consuming, and is also difficult to find the source, on one hand, the working efficiency is low, on the other hand, the working difficulty and complexity are increased, but if the source is not processed, the system work is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the full-automatic semaphore monitor which carries out real-time monitoring and recording through the semaphore and provides a reliable basis for troubleshooting.
The invention discloses a full-automatic semaphore monitor, which comprises a Micro Control Unit (MCU), wherein the MCU is respectively connected with a data acquisition module, a signal processing module, a 4G module, a storage module, an alarm module and a touch screen, and the 4G module is connected with a cloud platform through a network; the data acquisition module is used for collecting voltage signals and consists of a contactor and contacts at two ends; the signal processing module processes and converts the voltage signals acquired by the data acquisition module into positive and negative pulse waveforms and comprises a voltage dividing resistor, a photoelectric coupler, an amplifier, a follower and an ADC (analog to digital converter).
According to one embodiment of the invention, the model of the 4G module is WH-LTE-7S4, and the 4G module is used for wireless transmission and sending monitoring data to a cloud platform in a wireless mode.
According to one embodiment of the invention, the alarm module is used for sending alarm information to related contacts, triggering an alarm event when abnormal semaphore is monitored, and sending an alarm short message notification through the 4G module.
According to an embodiment of the present invention, the model of the storage module is W25Q64EEPROM, and is used to store the monitored signal quantity, the signal quantity change condition, and the change time.
According to one embodiment of the invention, the touch screen adopts DMT80480T043_01WTR high definition screen to set and modify relevant parameters.
According to one embodiment of the present invention, the photocoupler is of the type HCPL-7840.
According to one embodiment of the invention, the amplifier is model number TL 082C.
According to one embodiment of the present invention, the follower model is LM 324.
The full-automatic semaphore monitor can be used for monitoring and recording the semaphore of each alternating current circuit, equipment and the like in a converter station in real time, provides a reliable basis for troubleshooting, and improves the working efficiency to a great extent. On one hand, the full-automatic semaphore monitor can upload monitoring and recording results to a server for storage, and when the system has an abnormal fault, abnormal points can be quickly found out according to historical records of semaphore of each channel, so that the tracing of fault sources is realized, optimization and improvement are facilitated, the system is restored as soon as possible, and loss is reduced; on the other hand, the method brings convenience to troubleshooting work of workers, not only saves a large amount of troubleshooting time and manpower, but also improves accuracy and saves a large amount of expenditure for the convertor station.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a block diagram of a full-automatic semaphore monitor according to the present invention;
FIG. 2 is a schematic diagram of the MCU structure of the full-automatic semaphore monitor according to the present invention;
FIG. 3 is a schematic diagram of the signal collection and processing process of the full-automatic semaphore monitor according to the present invention;
FIG. 4 is a schematic diagram of a 4G module structure of the full-automatic semaphore monitor according to the present invention;
FIG. 5 is a schematic diagram of a storage module structure of the full-automatic semaphore monitor according to the present invention;
FIG. 6 is a flow chart of semaphore monitoring of the semaphore automatic monitor according to the present invention;
FIG. 7 is a diagram showing sudden signal fluctuation in the examples.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The full-automatic semaphore monitor is structurally shown in fig. 1 and 2 and comprises a Micro Control Unit (MCU), wherein the MCU is respectively connected with a data acquisition module, a signal processing module, a 4G module, a storage module, an alarm module and a touch screen, and the 4G module is connected with a cloud platform through a network;
the signal acquisition and processing process is shown in fig. 3, and the data acquisition module is used for collecting voltage signals and consists of a contactor and contacts at two ends; the signal processing module processes and converts the voltage signal acquired by the data acquisition module into a positive pulse waveform and a negative pulse waveform, and the positive pulse waveform comprises a divider resistor, a photoelectric coupler, an amplifier, a follower and an ADC (analog to digital converter);
the model of the 4G module is WH-LTE-7S4, the structural principle is as shown in FIG. 4, the 4G module is used for wireless transmission, and monitoring data are sent to a cloud platform in a wireless mode;
the alarm module is used for sending alarm information to related contacts, triggering an alarm event when abnormal semaphore is monitored, and sending an alarm short message notification through the 4G module;
the model of the storage module is W25Q64EEPROM, the structural principle is shown in figure 5, and the storage module is used for storing monitored signal quantity, signal quantity change conditions, change time and the like;
the touch screen adopts DMT80480T043_01WTR high definition screen to set and modify relevant parameters.
When the full-automatic semaphore monitor is used, a wire and an insulation puncture quick-connection terminal are clamped on a cable, a torque nut is screwed by force, the semaphore monitoring process is shown in fig. 6, voltage at two ends of a contactor is divided by a divider resistor and then isolated by a linear optical coupler to obtain a differential signal with low voltage of 5V, the signal is subjected to differential amplification by an TLC82C amplifier, is subjected to precise rectifying current by an LM324 follower amplifier, is converted into a single-ended signal with zero of 2.5V, and is input to an ADC (analog to digital converter) through the follower to obtain a positive pulse waveform and a negative pulse waveform, and the positive pulse waveform and the negative pulse waveform are displayed on a touch screen and are transmitted to a cloud platform through a 4G module to be stored.
When the system has an abnormal fault, the fault source can be searched by checking the historical semaphore record, so that the tracing of the fault source can be realized; secondly, when the semaphore is abnormal due to some reason, the system can inform related personnel through short messages, and certain basis is provided for troubleshooting and the like.
In general, the original waveform of a signal is reproduced, and a minimum of three samples are needed to accurately restore the signal itself, as shown in fig. 7: the normal signal is a fixed level signal represented by S4, and the signal quantities respectively have signal sudden changes in S1, S2 and S3 in the range of time axis t, and the signal quantity changes are not the true control quantity or change trend of the peripheral equipment, but the signal sudden changes caused by external interference, theoretically, the original control system has a filtering function, but the signal pulse width is enough to cause the misoperation of the control system under the condition of enough signal pulse width, thereby causing the system fault.
The full-automatic semaphore monitor can record the change process of the semaphore, and can obviously see the change when a worker carries out system troubleshooting, so that an interference source can be quickly found out for optimization and improvement, the system can be timely recovered to be normal, and the anti-interference capability of the semaphore is improved.
In the above figures, L1-L2, L3-L4 are used in pairs, respectively, and when the system is operating normally, the contacts should be maintained in the corresponding states, and the signals should not be changed until an explicit control signal is received from the control system. However, due to the reasons of contact carbonization, poor contact, reduced coil pull-in force and the like existing in the long-term use of the contactor, the contact can slightly shake to cause signal shake in signal transmission, so that the control system can be stopped due to faults.
The full-automatic semaphore monitor can accurately record the change process and the condition of each semaphore, record the signal waveform of the semaphore by combining with time information, and assist maintenance personnel to analyze and judge faults when system faults occur.
The full-automatic monitor for the signal quantity is connected through the insulation puncture quick-connection terminal, is simple, convenient and safe to install and use, a puncture structure does not need to cut off a cable, and good electrical contact can be ensured due to constant puncture pressure; the wire diameter is rich, and the quick connection of wires with different wire diameters is suitable; the insulating property is good, the special insulating shell is adopted, the light and environment aging can be resisted, and the insulating strength is high; the work efficiency is extremely high, and the insulation piercing connection technology is adopted, so that the method is suitable for field batch quick connection; the inspection and maintenance are convenient, the installation is simple and convenient, only the moment nut needs to be observed whether to be screwed off, the service life is longer than 30 years, and the maintenance is not needed; the puncture end shrinks and becomes thin, and the damage to the line body is avoided.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The full-automatic semaphore monitor is characterized by comprising a Micro Control Unit (MCU), wherein the MCU is respectively connected with a data acquisition module, a signal processing module, a 4G module, a storage module, an alarm module and a touch screen, and the 4G module is connected with a cloud platform through a network;
the data acquisition module is used for collecting voltage signals and consists of a contactor and contacts at two ends;
the signal processing module processes and converts the voltage signals acquired by the data acquisition module into positive and negative pulse waveforms and comprises a voltage dividing resistor, a photoelectric coupler, an amplifier, a follower and an ADC (analog to digital converter).
2. The full-automatic semaphore monitor according to claim 1, wherein the 4G module is of a model of WH-LTE-7S4, and is used for wireless transmission to transmit monitoring data to the cloud platform in a wireless manner.
3. The full-automatic semaphore monitor according to claim 1, wherein said alarm module is adapted to send alarm information to a contact, trigger an alarm event when abnormal semaphore is detected, and send an alarm short message notification through the 4G module.
4. The full-automatic semaphore monitor according to claim 1, wherein said memory module is of the type W25Q64EEPROM, and is used for storing the monitored semaphore, semaphore variation and variation time.
5. The fully automatic monitor of claim 1, wherein the touch screen is DMT80480T043_01WTR high definition screen for setting and modifying relevant parameters.
6. The full-automatic semaphore monitor according to claim 1, wherein said photocoupler is HCPL-7840.
7. The full-automatic semaphore monitor as claimed in claim 1, wherein said amplifier is of model TL 082C.
8. The full-automatic semaphore monitor according to claim 1, wherein said follower is of the type LM 324.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011343992.XA CN112910083A (en) | 2020-11-25 | 2020-11-25 | Full-automatic signal quantity monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011343992.XA CN112910083A (en) | 2020-11-25 | 2020-11-25 | Full-automatic signal quantity monitor |
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| CN112910083A true CN112910083A (en) | 2021-06-04 |
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| CN202011343992.XA Pending CN112910083A (en) | 2020-11-25 | 2020-11-25 | Full-automatic signal quantity monitor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205539244U (en) * | 2016-01-29 | 2016-08-31 | 杭州海兴电力科技股份有限公司 | Transformer monitor terminal |
| CN207976519U (en) * | 2018-03-29 | 2018-10-16 | 福建工程学院 | A kind of direct-current high voltage detection circuit |
| CN109412899A (en) * | 2018-11-19 | 2019-03-01 | 深圳供电局有限公司 | Centralized receiving display system |
| CN111463899A (en) * | 2020-04-07 | 2020-07-28 | 国家电网有限公司 | Data monitoring device and method for high-voltage direct-current power transmission system |
-
2020
- 2020-11-25 CN CN202011343992.XA patent/CN112910083A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205539244U (en) * | 2016-01-29 | 2016-08-31 | 杭州海兴电力科技股份有限公司 | Transformer monitor terminal |
| CN207976519U (en) * | 2018-03-29 | 2018-10-16 | 福建工程学院 | A kind of direct-current high voltage detection circuit |
| CN109412899A (en) * | 2018-11-19 | 2019-03-01 | 深圳供电局有限公司 | Centralized receiving display system |
| CN111463899A (en) * | 2020-04-07 | 2020-07-28 | 国家电网有限公司 | Data monitoring device and method for high-voltage direct-current power transmission system |
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Application publication date: 20210604 |
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