CN113036920A - Transformer substation video monitoring system and protective box thereof - Google Patents
Transformer substation video monitoring system and protective box thereof Download PDFInfo
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- CN113036920A CN113036920A CN202110262661.1A CN202110262661A CN113036920A CN 113036920 A CN113036920 A CN 113036920A CN 202110262661 A CN202110262661 A CN 202110262661A CN 113036920 A CN113036920 A CN 113036920A
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- overvoltage
- monitoring system
- video monitoring
- signal line
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a transformer substation video monitoring system and a protective box thereof, wherein the system comprises: the camera is used for acquiring video data and comprises a power line, a video signal line and a control signal line; the overvoltage monitor is used for detecting overvoltage data of the power line, the video signal line and the control signal line; and the communication module is used for receiving the overvoltage data sent by the overvoltage monitor and sending the received overvoltage data to the control equipment. The substation video monitoring system provided by the invention can monitor overvoltage data of power lines, video signal lines, control signal lines and other lines of a camera in real time and upload the overvoltage data to a control center in time so as to analyze whether the substation video monitoring system is in a normal state or not, provide data support for fault reasons, pre-judge system faults in time and achieve the purpose of active operation and maintenance.
Description
Technical Field
The invention relates to the technical field of transformer substation monitoring, in particular to a transformer substation video monitoring system and a protective box thereof.
Background
The transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system. The substations in the power plant are step-up substations, which are used to boost up the electrical energy generated by the generator and feed it into the high-voltage network.
The video monitoring system of the transformer substation mainly comprises a front-end device and a rear-end device, wherein the front-end device usually comprises a camera, a holder, a monitor, an alarm detector, a multifunctional decoder and other components, corresponding relations are established between various devices of a rear-end device central control system through wired, wireless or optical fiber transmission media, and the monitoring devices are increasingly and widely used along with the continuous development of scientific technology. The existing intelligent video monitoring system has the following defects in the using process.
Because the video monitoring system front-end equipment is mostly installed in outdoor open-air environment, the video monitoring system front-end equipment is often damaged by lightning overvoltage and induced overvoltage, if the state of the video monitoring system front-end equipment cannot be monitored in real time and overvoltage data can be timely acquired, the video monitoring system front-end equipment cannot be timely maintained after being damaged due to data feedback lag, and then the operation of a transformer substation is caused to have the risk of being separated from monitoring.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art, and provides a transformer substation video monitoring system and a protective box thereof, which can monitor overvoltage data of power lines, video signal lines, control signal lines and other lines of a camera in real time and upload the overvoltage data to a control center in time so as to analyze whether the transformer substation video monitoring system is in a normal state or not, provide data support for fault reasons, and can pre-judge system faults in time to achieve the purpose of active operation and maintenance.
In order to achieve the above purpose, the invention provides the following technical scheme:
in a first aspect, the present invention provides a substation video monitoring system, including:
the camera is used for acquiring video data and comprises a power line, a video signal line and a control signal line;
the overvoltage monitor is used for detecting overvoltage data of the power line, the video signal line and the control signal line;
and the communication module is used for receiving the overvoltage data sent by the overvoltage monitor and sending the received overvoltage data to the control equipment.
As a further improvement, the system further includes video signal line overvoltage protection equipment electrically connected with the video signal line, control line overvoltage protection equipment electrically connected with the control signal line, and power line overvoltage protection equipment electrically connected with the power line.
As a further improvement, the alarm output ends of the video signal line overvoltage protection device, the control line overvoltage protection device and the power line overvoltage protection device are respectively electrically connected with the communication module and used for sending corresponding alarm signals to the communication module.
As a further improvement, the system further comprises a grounding bus bar, and the power connection ends of the video signal line overvoltage protection device, the control line overvoltage protection device and the power line overvoltage protection device are respectively electrically connected with the grounding bus bar.
As a further improvement, the communication module is an ethernet switch.
As a further improvement, the control device is used for receiving the data sent by the communication module and displaying the received data on the monitoring screen.
In a second aspect, the invention provides a substation video monitoring system protection box, which comprises a box body, wherein any substation video monitoring system is arranged in the box body.
As a further improvement, the protection class of the protection box is IP 45.
As a further improvement, the box body is made of metal.
As a further improvement, the grounding bus bar of the substation video monitoring system is electrically connected with the box body.
Compared with the prior art, the transformer substation video monitoring system provided by the invention at least has the following beneficial effects: the overvoltage data of power lines, video signal lines, control signal lines and other lines of the camera can be monitored in real time, and the overvoltage data are uploaded to the control center in time to be used for analyzing whether the video monitoring system of the transformer substation is in a normal state or not, so that data support is provided for fault reasons, system faults can be judged in advance in time, and the purpose of active operation and maintenance is achieved.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
fig. 1 is a schematic block diagram of a substation video monitoring system in one embodiment.
Fig. 2 is a schematic overall structure diagram of a substation video monitoring system protection box in one embodiment.
Description of the drawings:
1. a box body; 2. a camera; 3. a video signal line; 4. a control signal line; 5. a power line; 6. a first overvoltage sensor; 7. a second overvoltage sensor; 8. a third overvoltage sensor; 9. a fourth overvoltage sensor; 10. an overvoltage monitor; 11. power supply line overvoltage protection equipment; 12. video signal circuit overvoltage protection equipment; 13. controlling a line overvoltage protection device; 14. a ground bus; 15. an alarm output end; 16. video monitoring system back-end equipment; 17. an overvoltage online monitoring screen of the master control room; 18. a grounding PE system; 19. a communication module; 20. a power adapter; 21. power adaptation terminal.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
In order to facilitate understanding of the present invention, the following description is made of a related art to which embodiments of the present invention relate.
The voltage sensor is a sensor which can sense the measured voltage and convert the measured voltage into a usable output signal. In various automatic detection and control systems, it is often necessary to track and collect high-speed alternating and direct voltage signals and perform spectrum analysis on relatively complex voltage waveforms. The Hall voltage sensor is a voltage detection element capable of isolating a main current loop from an electronic control circuit, has excellent electrical performance, can detect alternating current and direct current by the same detection element, can even detect a transient voltage peak value, and is a new generation product expected to replace a traditional transformer. The optical fiber voltage sensor is a new-generation voltage detection device with extremely strong vitality and competitiveness. The optical fiber voltage sensor mainly comprises a light source, a sensing head, a photoelectric conversion and information processing circuit and a computer acquisition system. The optical fiber voltage sensor adopts the nonmetal crystal as a sensing head, and the optical fiber as a sensing medium, so that the power grid can be effectively isolated from the measuring circuit, and the danger of secondary short circuit is avoided. The optical fiber voltage sensor has the advantages of no magnetic saturation, high accuracy and the like due to the sensing mechanism of the optical fiber voltage sensor; the optical fiber is used for transmitting information, the anti-interference capability is strong, and the function of electrically isolating a measurement loop from a high-voltage loop can be achieved, so that the insulation structure is simpler than that of a traditional mutual inductor, the size and the mass can be reduced, and the electromagnetic mutual inductor has the advantages which cannot be achieved by the traditional electromagnetic mutual inductor. Both a hall voltage sensor and a fiber optic voltage observer can be used as the non-contact overvoltage sensor in the embodiment of the invention.
The following describes a transformer substation video monitoring system and a protection box thereof in detail through one or more embodiments.
As shown in fig. 1, in one embodiment, a substation video monitoring system is provided, the system comprising a camera 2, an overvoltage monitor 10 and a communication module 19; the camera 2 is used for acquiring video data, and the camera 2 comprises a power line 5, a video signal line 3 and a control signal line 4; the overvoltage monitor 10 is used for detecting overvoltage data of the power line 5, the video signal line 3 and the control signal line 4; the communication module 19 is configured to receive overvoltage data sent by the overvoltage monitor 10 and send the received overvoltage data to the control device, where the communication module 19 is an ethernet switch, and specifically, the communication module 19 may also be configured to transmit video data, and for this reason, the communication module 19 is integrated with a network video encoder.
It can be understood that the power line 5 of the camera 2 is used for supplying power to the camera 2, as shown in fig. 2, the power adapter 20 supplies power to the electrical equipment in the protective box, the protective box has a plurality of power adapter terminals 21 electrically connected with the power adapter 20, and the power line 5 is connected with one of the power adapter terminals 21 for getting power. The video signal line 3 is used for sending video data shot by the camera 2 to the communication module 19, and the control signal line 4 is used for sending operation instructions, such as a power-on instruction, a power-off instruction and the like, to the camera 2.
The overvoltage monitor 10 includes a plurality of overvoltage sensors, and in this example, the overvoltage monitor 10 has four non-contact overvoltage sensors, a first overvoltage sensor 6, a second overvoltage sensor 7, a third overvoltage sensor 8, and a fourth overvoltage sensor 9. As shown in fig. 1, the four non-contact overvoltage sensors respectively acquire overvoltage data of the video signal line 3, the control signal line 4, the power line 5 and the ground busbar 14, and timely transmit the overvoltage data to the video monitoring system back-end device 16 serving as a control device through the communication module 19, and display the overvoltage data in real time through the main control room overvoltage online monitoring screen 17.
Therefore, the overvoltage data of the power line 5, the video signal line 3, the control signal line 4 and other lines of the camera 2 can be monitored in real time, and the overvoltage data are uploaded to the control center in time to analyze whether the video monitoring system of the transformer substation is in a normal state or not, so that data support is provided for fault reasons, system faults can be judged in advance in time, and the purpose of active operation and maintenance is achieved.
In some embodiments, the system further includes video signal line overvoltage protection equipment 12 electrically connected to the video signal line 3, control line overvoltage protection equipment 13 electrically connected to the control signal line 4, and power line overvoltage protection equipment 11 electrically connected to the power line 5. Specifically, the alarm output terminals 15 of the video signal line overvoltage protection device 12, the control line overvoltage protection device 13 and the power line overvoltage protection device 11 are electrically connected to the communication module 19 for sending corresponding alarm signals to the communication module.
As an example, the overvoltage protection device in this embodiment is an AM series microcomputer protection measurement and control device manufactured by ancoru electric corporation, which integrates protection, measurement, and control, is suitable for a user terminal substation (station) with a voltage level of 35kV or less, and can realize protection, measurement, and control of the user substation; the residual voltage is controlled within the range which can be borne by the system, so that the front-end equipment of the video monitoring equipment is protected better. The device is provided with an alarm output end 15, and can feed back the state of each line in time while providing overvoltage protection for each line.
In some embodiments, the system further comprises a ground bus 14, and the electrical connection terminals of the video signal line overvoltage protection device 12, the control line overvoltage protection device 13 and the power line overvoltage protection device 11 are electrically connected to the ground bus 14. The protection to human body when having promoted the electric leakage through setting up ground strap 14, prevents the emergence of personal electric shock accident.
As shown in fig. 2, in one embodiment, a substation video monitoring system protection box is provided, and the protection box includes a box body 1, and the substation video monitoring system according to any one of the above embodiments is disposed in the box body 1.
Specifically, the protection level of the protection box is IP45, and the problems of water accumulation, rusting, dust accumulation and the like are solved because the front-end equipment monitoring box of the video monitoring system is designed according to the protection level of IP 45.
As further improvement, the box body 1 is made of metal, and the grounding bus bar 14 of the transformer substation video monitoring system is electrically connected with the box body 1, so that the protection on a human body during electric leakage is improved, and the occurrence of personal electric shock accidents is prevented.
In order to facilitate understanding of the present invention, the following brief description of the working principle of the present invention is provided:
(1) the protection grade IP45 box 1 solves the problems of water accumulation, rusting, dust accumulation and the like.
(2) The video signal line 3 of the video camera 2 is overvoltage protected by the video signal line overvoltage protection device 12, the control signal line 4 is overvoltage protected by the control line overvoltage protection device, the ground lines of all the overvoltage protection devices are electrically connected with the ground busbar 14, and the ground busbar 14 is electrically connected with the protection level IP45 box 1 and then electrically connected with the ground PE system 18.
(3) When the power line 5, the video signal line 3 and the control signal line 4 have overvoltage or the ground potential counterattack occurs in the grounding system, the four voltage sensors output the acquired overvoltage signals to the intelligent overvoltage monitor 10 for data processing, then output to the communication module 19, then output to the video monitoring system rear-end equipment 16, and finally output to the main control room overvoltage online monitoring screen 17.
(4) When the power line overvoltage protection device 11, the video signal line overvoltage protection device 12 and the control line signal overvoltage protection device are damaged due to overvoltage, the overvoltage protection device alarm output end 15 outputs signals to the intelligent overvoltage monitor 10 for processing, then outputs the signals to the communication module 19, then outputs the signals to the video monitoring system rear-end device 16, and finally outputs the signals to the main control room overvoltage on-line monitoring screen 17.
(5) The power line 55 of the camera 22 is over-voltage protected by power line over-voltage protection equipment 1111. Then is connected with the back-end equipment 1616 of the video monitoring system, and finally is connected with the overvoltage online monitoring screen 17 of the main control room 17.
The invention realizes the following beneficial effects:
(1) the integrated overvoltage monitoring equipment of the video monitoring system of the transformer substation collects and uploads the intrusion transient overvoltage and overcurrent of a power line 5 and a signal line of front-end equipment of the video monitoring system to the overvoltage online monitoring screen 17 of the main control room, data provides a monitoring means for accident analysis and active operation and maintenance, and the safety and reliability of the system are improved.
(2) And a special overvoltage protector is installed, and residual voltage is controlled in a range which can be borne by back-end equipment, so that the front-end equipment of the video monitoring equipment is better protected.
(3) The front-end equipment monitoring box of the video monitoring system is subjected to leakage protection, and personal electric shock accidents are prevented.
(4) The video monitoring system front-end equipment monitoring box is designed according to the IP45 protection grade, and the problems of water accumulation, rusting, dust accumulation and the like are solved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Claims (10)
1. A substation video monitoring system, the system comprising:
the camera is used for acquiring video data and comprises a power line, a video signal line and a control signal line;
the overvoltage monitor is used for detecting overvoltage data of the power line, the video signal line and the control signal line;
and the communication module is used for receiving the overvoltage data sent by the overvoltage monitor and sending the received overvoltage data to the control equipment.
2. The substation video monitoring system of claim 1, further comprising video signal line overvoltage protection equipment electrically connected to the video signal line, control line overvoltage protection equipment electrically connected to the control signal line, and power line overvoltage protection equipment electrically connected to the power line.
3. The substation video monitoring system according to claim 2, wherein the alarm output terminals of the video signal line overvoltage protection device, the control line overvoltage protection device and the power line overvoltage protection device are electrically connected to the communication module respectively, and are configured to send corresponding alarm signals to the communication module.
4. The substation video monitoring system of claim 3, further comprising a ground bus, wherein the video signal line overvoltage protection device, the control line overvoltage protection device and the power line overvoltage protection device are electrically connected to the ground bus at their respective terminals.
5. The substation video monitoring system of claim 1, wherein the communication module is an ethernet switch.
6. The substation video monitoring system of any one of claims 1 to 5, wherein the control device is configured to receive data sent by the communication module and to display the received data on the monitoring screen.
7. A substation video monitoring system protection box, characterized in that, the protection box includes the box, set up the substation video monitoring system of any one of claims 1 to 6 in the box.
8. The substation video monitoring system protective box according to claim 7, wherein the protective class of the protective box is IP 45.
9. The substation video monitoring system protective box according to claim 7, wherein the box body is made of metal.
10. The substation video monitoring system protective box of claim 9, wherein the grounding busbar of the substation video monitoring system is electrically connected to the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110262661.1A CN113036920A (en) | 2021-03-10 | 2021-03-10 | Transformer substation video monitoring system and protective box thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110262661.1A CN113036920A (en) | 2021-03-10 | 2021-03-10 | Transformer substation video monitoring system and protective box thereof |
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| CN113036920A true CN113036920A (en) | 2021-06-25 |
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| CN202110262661.1A Pending CN113036920A (en) | 2021-03-10 | 2021-03-10 | Transformer substation video monitoring system and protective box thereof |
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