CN112038134A - Method and device for detecting switching-on and switching-off in place of single-column double-arm vertical telescopic isolating switch - Google Patents
Method and device for detecting switching-on and switching-off in place of single-column double-arm vertical telescopic isolating switch Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/167—Circuits for remote indication
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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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
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/18—Systems supporting electrical power generation, transmission or distribution using switches, relays or circuit breakers, e.g. intelligent electronic devices [IED]
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Abstract
A method for detecting the switching-on and switching-off in place of a single-column double-arm vertical telescopic isolating switch comprises the following steps: closing detection: s11) arranging a closing pressure sensor in a bus static contact rod of the isolating switch; s12), collecting the closing pressure of the bus static contact rod by a closing pressure sensor, wherein the closing pressure exceeds a preset closing pressure threshold value, namely the bus is closed in place; brake opening detection: s21) arranging the opening pressure plate device on the limit mounting plate of the conductive base of the isolating switch, and arranging the opening pressure sensor in the opening pressure plate device; s22) the opening pressure sensor collects the opening pressure of the crank arm extrusion opening pressure plate device of the isolating switch, and the opening pressure exceeds a preset opening pressure threshold value, namely an opening in-place signal. According to the embodiment of the invention, the pressure sensor is directly arranged on the bus static contact rod, so that the direct collection of the closing pressure is realized. The direct collection of the opening pressure in the opening process is realized through the opening pressure plate device and the opening pressure sensor.
Description
Technical Field
The invention belongs to the field of state monitoring of electrical equipment, and particularly relates to a method and a device for detecting switching-on and switching-off in place of a single-column double-arm vertical telescopic isolating switch.
Background
The high-voltage isolating switch is one of important parts of a power transmission and transformation system and is primary equipment with the largest use amount in a power grid, the isolating switch needs to be switched in place, contact of a contact finger is guaranteed to be good, the disconnecting switch needs to have a definite air insulation distance, and safety of maintainers is guaranteed.
The existing measures for determining the on-off in-place detection of the isolating switch comprise the following steps: firstly, an image recognition technology is adopted, a video monitoring mode is adopted through a field camera, the video monitoring mode has certain requirements on the layout of a transformer substation, the camera has dead angles, and a certain space is required between phases in order to ensure that each camera can accurately recognize a marker, so that the influence of weather and environment is great; secondly, optical induction is adopted, and by means of the grating, if the conductive arm of the switch reaches a certain position, the photoelectric coupling sensor sends out a signal to judge whether the switch is switched on or off, and whether contact finger contact of a contact is directly judged is not judged, so that the possibility of missed judgment and erroneous judgment is caused; in addition, the switching-on and switching-off of the switch are judged in a low-voltage end auxiliary contact mode, the auxiliary switch is connected with background monitoring through a wire, and the contact condition of a contact finger of the contact cannot be accurately judged; finally, a pressure sensor is additionally arranged at the position of the contact finger, and the type of the isolating switch only aims at the switch contact finger and is provided with a spring type isolating switch.
The first three ways are ways for indirectly judging the on-off state of the switch, and are unreliable, and the single-column double-arm vertical telescopic isolating switch does not have a switch contact finger spring structure, so that the last way is not applicable to the single-column double-arm vertical telescopic isolating switch, and therefore, the research on the method for judging the on-off position of the isolating switch is of great significance.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the method for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch is simple in process and solves the problem that the opening and closing in place of the single-column double-arm vertical telescopic isolating switch cannot be directly measured. The invention also provides a device for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch.
According to the embodiment of the first aspect of the invention, the method for detecting the switching-on and switching-off in place of the single-column double-arm vertical telescopic isolating switch comprises the following steps:
closing detection: closing detection: s11) arranging a closing pressure sensor in a bus static contact rod of the isolating switch; s12), collecting the closing pressure of the bus static contact rod by a closing pressure sensor, wherein the closing pressure exceeds a preset closing pressure threshold value, namely the bus static contact rod is closed in place;
brake opening detection: s21) arranging the opening pressure plate device on the limit mounting plate of the conductive base of the isolating switch, and arranging the opening pressure sensor in the opening pressure plate device; s22) the opening pressure sensor collects the opening pressure of the crank arm extrusion opening pressure plate device of the isolating switch, and the opening pressure exceeds a preset opening pressure threshold value, namely an opening in-place signal.
The method for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch according to the embodiment of the invention at least has the following technical effects: the pressure sensor is directly arranged in the bus static contact rod of the isolating switch, so that the direct collection of the closing pressure of the bus static contact rod of the isolating switch during closing can be realized. The pressure direction of the crank arm of the isolating switch is changed through the opening pressure plate device, a basis for directly acquiring the opening pressure of the crank arm of the isolating switch is provided, and then the opening pressure sensor is used for directly acquiring the opening pressure in the opening process; and finally, comparing the closing pressure and the opening pressure with a preset closing pressure threshold value and an opening pressure threshold value to judge whether the isolating switch is in place for opening and closing. Compared with the traditional indirect measurement mode, the method has the advantages of better anti-interference performance, lower cost and higher accuracy.
According to some embodiments of the invention, the opening platen device comprises: the opening pressing plate is arranged on the limit mounting plate of the conductive base and is used for being extruded by the crank arm; and one end of the compression spring is connected with the opening pressure sensor, and the other end of the compression spring is connected with the opening pressing plate.
According to some embodiments of the invention, the closing pressure sensors are disposed on both sides of the bus bar stationary contact bar.
According to the second aspect of the invention, the opening and closing in-place detection device for the single-column double-arm vertical telescopic isolating switch comprises: the closing pressure sensor is arranged in a bus static contact rod of the isolating switch and used for acquiring closing pressure of the bus static contact rod; the opening pressure plate device is arranged on the limit mounting plate of the conductive base of the isolating switch and used for changing the direction of opening pressure of the crank arm of the isolating switch; the opening pressure sensor is arranged in the opening pressure plate device and used for collecting opening pressure brought by the crank arm through the opening pressure plate device; and the monitoring end is respectively electrically connected with the closing pressure sensor and the opening pressure sensor and is used for receiving the closing pressure and the opening pressure and judging whether the isolating switch is in place or not according to a preset closing pressure threshold value and an opening pressure threshold value.
The opening and closing in-place detection device for the single-column double-arm vertical telescopic isolating switch provided by the embodiment of the invention at least has the following technical effects: the direct measurement of the in-place closing of the isolating switch can be realized through the closing pressure sensor; the direct measurement of the brake-separating process of the isolating switch can be realized through the brake-separating pressure plate device and the brake-separating pressure sensor; through the monitoring terminal, whether the current opening and closing state is finished or not can be judged, and whether the actual opening and closing state is in place or not is confirmed. Compared with the traditional indirect measurement, the device has lower cost, stronger anti-interference performance and higher accuracy.
According to some embodiments of the invention, the opening platen device comprises: the opening pressing plate is arranged on the limit mounting plate of the conductive base and is used for being extruded by the crank arm; and one end of the compression spring is connected with the opening pressure sensor, and the other end of the compression spring is connected with the opening pressing plate.
According to some embodiments of the present invention, an acquisition device is electrically connected between the switching-on pressure sensor, the switching-off pressure sensor and the monitoring terminal; the collecting device is used for receiving switching-on pressure signals and switching-off pressure signals of the switching-on pressure sensor and the switching-off pressure sensor and transmitting the switching-on pressure signals and the switching-off pressure signals to the monitoring end.
According to some embodiments of the invention, the switching-on pressure sensor and the switching-off pressure sensor are wirelessly connected with the acquisition device.
According to some embodiments of the present invention, the data communication interface is further provided for data interaction with an external device.
According to some embodiments of the present invention, the switching-on pressure sensor and the switching-off pressure sensor are passively powered.
According to some embodiments of the present invention, the switching-on pressure sensor and the switching-off pressure sensor are both connected with a power electronic switch, and the power electronic switch is used for changing the operation states of the switching-on pressure sensor and the switching-off pressure sensor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The following further describes embodiments of the present invention with reference to the drawings.
Fig. 1 is a closing state diagram of an isolating switch according to an embodiment of the first aspect of the invention;
FIG. 2 is a schematic view of a bus bar static contact bar configuration according to an embodiment of the first aspect of the present invention;
fig. 3 is a schematic structural diagram (opening block) of an isolating switch according to an embodiment of the first aspect of the invention;
FIG. 4 is a schematic illustration of a rocker position of the disconnector according to an embodiment of the first aspect of the invention;
fig. 5 is a schematic structural diagram of a closing pressure sensor according to an embodiment of the first aspect of the present invention;
fig. 6 is a system diagram of an embodiment of the second aspect of the present invention.
Reference numerals:
a switching-on pressure sensor 110,
A brake separating pressure plate device 210, a brake separating pressure plate 211, a compression spring 212, a brake separating pressure sensor 220,
A monitoring end 310, a collecting device 320,
The bus static contact rod 410, the upper pressure plate 411, the lower pressure plate 412, the pin 413, the conductive base limiting mounting plate 420, the crank arm 430 and the double-folded double arm 440.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, if there are first, second, third, fourth, etc. described only for the purpose of distinguishing technical features, they are not to be interpreted as indicating or implying relative importance or implying number of indicated technical features or implying precedence of indicated technical features.
In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
The method for detecting the switching-on and switching-off positions of the single-column double-arm vertical telescopic isolating switch according to the embodiment of the first aspect of the invention is described below with reference to fig. 1 to 5.
According to the embodiment of the first aspect of the invention, the method for detecting the switching-on and switching-off in place of the single-column double-arm vertical telescopic isolating switch comprises the following steps:
closing detection: s11) disposing the closing pressure sensor 110 in the busbar stationary contact bar 410 of the disconnector; s12), the closing pressure sensor 110 collects the closing pressure of the bus bar stationary contact bar 410, and the closing pressure exceeds a preset closing pressure threshold value, i.e. the closing is in place;
brake opening detection: s21) arranging the opening pressure plate device 210 on the conductive base limit installation plate 420 of the isolating switch, and arranging the opening pressure sensor 220 in the opening pressure plate device 210; s22) the opening pressure sensor 220 collects the opening pressure of the isolating switch when the crank arm 430 presses the opening pressure plate device 210, and the opening pressure exceeds the preset opening pressure threshold value, i.e. the opening in-place signal.
Referring to fig. 1 to 5, in order to ensure that the closing detection is directly performed and the accuracy of the closing detection is ensured, firstly, the closing pressure sensor 110 needs to be installed and arranged reasonably. Referring to fig. 1 and 2, in some embodiments of the present invention, the closing pressure sensor 110 is disposed in a bus bar stationary contact bar 410 of the disconnecting switch, and the closing pressure sensor 110 may be disposed on one side or both sides of the bus bar stationary contact bar 410. Finally, after the detection of closing is started, the closing pressure received by the bus static contact rod 410 during closing is collected through the closing pressure sensor 110, and whether the closing is successful or not can be judged by comparing the closing pressure with a preset closing pressure threshold value.
In order to more clearly describe the installation position of the bus bar stationary contact bar 410 of the closing pressure sensor 110, a simpler description of the structure of the bus bar stationary contact bar 410 is provided. Referring to fig. 2, the bus bar stationary contact bar 410 includes an upper pressing plate 411 and a lower pressing plate 412; the closing pressure sensor 110 is arranged at one end or two ends of the contact surface of the upper pressing plate 411 and the lower pressing plate 412, and a pad sleeve pad is padded on the ground of the closing pressure sensor 110; the upper pressing plate 411 and the lower pressing plate 412 are fixed through a pin 413, and an upper sliding sleeve and a lower sliding sleeve for ensuring insulation are sleeved on the pin 413.
The following briefly describes the process of closing detection.
When the isolating switch is switched on, the double-folded double arm 440 of the isolating switch moves upwards in a folding manner, and at the moment, the switching-on pressure sensor 110 starts to work. The double-folded arms 440 continue to move upward, the angle between the arms becomes smaller, and when the bus bar 410 is clamped, the upper pressing plate 411 and the lower pressing plate 412 of the bus bar 410 start to move inward until the clamping action is completed. In the process of completing the clamping action, the upper pressure plate 411 presses the closing pressure sensor 110, and the closing pressure sensor 110 collects the clamping force of the switch closing, which is the closing pressure. After the closing pressure collected by the closing pressure sensor 110 is transmitted, the monitoring terminal 310 performs judgment, and closing is completed when the closing pressure is greater than or equal to a preset closing pressure threshold value.
Referring to fig. 1 to 5, in order to ensure that the opening detection can be directly performed and ensure the accuracy of the opening detection, the opening pressure sensor 220 needs to be installed and arranged reasonably. Referring to fig. 3 and 4, in some embodiments of the present invention, in order to ensure that the opening pressure can be directly detected without affecting the operation of the disconnector, an opening pressure plate device 210 is used for auxiliary measurement. The opening pressing plate device 210 is mainly used for changing the pressure direction of the connecting lever 430 of the isolating switch during opening, so that the closing pressure can be directly collected. The opening pressure plate device 210 is usually directly arranged on the conductive base limit mounting plate 420 of the isolating switch, so that the connecting lever 430 of the isolating switch can be directly extruded to the opening pressure sensor 220 through the opening pressure plate device 210 when the isolating switch operates. Finally, after the opening detection is started, the opening pressure of the isolating switch when the crank arm 430 extrudes the opening pressing plate device 210 is collected through the opening pressure sensor 220, and whether the opening is successful or not can be judged by comparing the opening pressure with a preset opening pressure threshold value.
The following briefly describes the process of the opening detection.
When the isolating switch is opened, the double-folded double arm 440 of the isolating switch is folded downwards, and the opening pressure sensor 220 starts to work. The doubled arms 440 continue to fold downward, gradually expanding the angle between the arms. During the opening process, the connecting lever 430 of the isolating switch rotates clockwise, when the opening is close to the proper position, the connecting lever 430 presses on the opening pressure plate device 210, and at the moment, the connecting lever 430 starts to press the opening pressure sensor 220 through the opening pressure plate device 210. The force generated by this pressing process is the opening pressure collected by the opening pressure sensor 220. After the collected opening pressure is transmitted out, the monitoring terminal 310 judges, and when the opening pressure is greater than or equal to a preset opening pressure threshold value, opening is completed.
According to the method for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch, disclosed by the embodiment of the invention, the pressure sensor is directly arranged in the bus static contact rod 410 of the isolating switch, so that the direct collection of the closing pressure of the bus static contact rod 410 of the isolating switch during closing can be realized. The pressure direction of the crank arm 430 of the isolating switch is changed through the opening pressure plate device 210, a basis for directly acquiring the opening pressure of the crank arm 430 of the isolating switch is provided, and then the opening pressure sensor 220 is used for directly acquiring the opening pressure in the opening process; and finally, comparing the closing pressure and the opening pressure with a preset closing pressure threshold value and an opening pressure threshold value to judge whether the isolating switch is in place for opening and closing. Compared with the traditional indirect measurement mode, the method has the advantages of better anti-interference performance, lower cost and higher accuracy.
In some embodiments of the present invention, the opening platen device 210 includes: a brake separating pressure plate 211 and a compression spring 212. Referring to fig. 4, the opening pressing plate 211 is disposed on the conductive base limit mounting plate 420 and is pressed by the crank arm 430; one end of the compression spring 212 is connected to the opening pressure sensor 220, and the other end is connected to the opening pressure plate 211. When the disconnecting switch approaches the completion of the opening, the connecting lever 430 of the disconnecting switch starts to contact the opening pressing plate 211, the opening operation is continuously completed at this time, the connecting lever 430 continuously presses the opening pressing plate 211 and further presses the compression spring 212 through the opening pressing plate 211, and the compression spring 212 generates the opening pressure for the opening pressure sensor 220. In actual production, the opening pressing plate device 210 can have various forms, an opening pressing plate 211 or other structures capable of supporting can be used, and the compression spring 212 can also adopt other elastic structures with restorability.
In some embodiments of the present invention, referring to fig. 2, the closing pressure sensors 110 are disposed at both sides of the bus bar stationary contact bar 410. In actual detection, when the disconnecting switch is switched on, the stress on two sides of the bus bar static contact rod 410 may be inconsistent, and if one side is stressed in advance, and the switching-on pressure sensor 110 is just arranged on the side, the problem of insufficient switching-on may be caused, and finally, the power supply fault of the whole power grid may be caused. Therefore, the closing pressure sensors 110 are arranged on both sides of the bus bar stationary contact bar 410, so that the problem can be effectively solved, and closing can be judged only when the closing pressure values acquired by the two closing pressure sensors 110 meet the requirements. In this way, moreover, a part of the faulty disconnector can be alerted, for example: the bus bar 410 of the existing disconnector deforms itself.
According to the second aspect of the invention, the opening and closing in-place detection device for the single-column double-arm vertical telescopic isolating switch comprises: the device comprises a closing pressure sensor 110, an opening pressure plate device 210, an opening pressure sensor 220 and a monitoring end 310. The switching-on pressure sensor 110 is arranged in a bus static contact rod 410 of the isolating switch and is used for acquiring the switching-on pressure of the bus static contact rod 410; the opening pressure plate device 210 is arranged on the limit mounting plate 420 of the conductive base of the isolating switch and used for changing the direction of opening pressure of the connecting lever 430 of the isolating switch; the opening pressure sensor 220 is arranged in the opening pressing plate device 210 and used for acquiring opening pressure brought by the crank arm 430 through the opening pressing plate device 210; and the monitoring terminal 310 is electrically connected to the closing pressure sensor 110 and the opening pressure sensor 220, and is configured to receive the closing pressure and the opening pressure and determine whether the disconnecting switch is in place according to a preset closing pressure threshold value and a preset opening pressure threshold value.
Refer to fig. 1 to 6. When the isolating switch needs to be switched on, the monitoring end 310 sends a switching-on detection signal at this time, the switching-on pressure sensor 110 starts to work, the switching-on pressure sensor 110 starts to continuously acquire the switching-on pressure of the switching-on pressure sensor 110 pressed by the upper pressure plate 411 of the bus static contact rod 410, and transmits the switching-on pressure to the monitoring end 310, the monitoring end 310 completes the switching-on in-place judgment of whether the isolating switch is switched on in place or not by comparing the switching-on pressure with the switching-on pressure threshold value, and when the switching-on pressure is greater than or equal to the switching-on. When the isolating switch needs to be opened, the monitoring end 310 sends an opening detection signal at the moment, the opening pressure sensor 220 starts to work, the opening pressure sensor 220 starts to continuously acquire opening pressure brought by the crank arm 430 of the isolating switch through the opening pressure plate device 210 and transmits the opening pressure to the monitoring end 310, the monitoring end 310 finishes whether the opening is in place or not by comparing the opening pressure with an opening pressure threshold value, and when the opening pressure is larger than or equal to the opening pressure threshold value, the opening of the isolating switch is determined to be in place.
According to the opening and closing in-place detection device for the single-column double-arm vertical telescopic isolating switch, disclosed by the embodiment of the invention, the direct measurement of the closing in-place of the isolating switch can be realized through the closing pressure sensor 110; the direct measurement of the opening process of the isolating switch can be realized through the opening pressure plate device 210 and the opening pressure sensor 220; through the monitoring terminal 310, whether the current opening and closing state is completed or not can be judged, and whether the actual opening and closing state is in place or not can be confirmed. Compared with the traditional indirect measurement, the device has lower cost, stronger anti-interference performance and higher accuracy.
In some embodiments of the present invention, the opening platen device 210 includes: a brake separating pressure plate 211 and a compression spring 212. Referring to fig. 4, the opening pressing plate 211 is disposed on the conductive base limit mounting plate 420 and is pressed by the crank arm 430; one end of the compression spring 212 is connected to the opening pressure sensor 220, and the other end is connected to the opening pressure plate 211. When the disconnecting switch approaches the completion of the opening, the connecting lever 430 of the disconnecting switch starts to contact the opening pressing plate 211, the opening operation is continuously completed at this time, the connecting lever 430 continuously presses the opening pressing plate 211 and further presses the compression spring 212 through the opening pressing plate 211, and the compression spring 212 generates the opening pressure for the opening pressure sensor 220. In actual production, the opening pressing plate device 210 can have various forms, an opening pressing plate 211 or other structures capable of supporting can be used, and the compression spring 212 can also adopt other elastic structures with restorability.
In some embodiments of the present invention, referring to fig. 6, the collecting device 320 is electrically connected between the closing pressure sensor 110, the opening pressure sensor 220 and the monitoring end 310; the collecting device 320 is used for receiving the opening pressure and the closing pressure signals of the closing pressure sensor 110 and the opening pressure sensor 220 and transmitting the opening pressure and the closing pressure signals to the monitoring terminal 310. In practical engineering, there are usually many disconnectors that need to be monitored simultaneously, and if all the disconnectors are directly connected through the closing pressure sensor 110 and the opening pressure sensor 220, great difficulty in wiring is caused. At this time, by adding the collecting device 320, signals of the closing pressure sensors 110 and the opening pressure sensors 220 of all the isolating switches in one area can be collected and transmitted, so that the difficulty of wiring and communication can be effectively reduced. In addition, when the number of the collecting devices 320 which need to be collected is still too large or the transmission distance is long, a switch can be further added to be used as intermediate switching, and finally, whether the disconnecting switch and the closing switch of the isolating switch in a large area are in place can be monitored at the monitoring end 310. In addition, in some large-scale projects, a control cubicle can be added according to actual requirements, and larger communication requirements are met.
In some embodiments of the present invention, the closing pressure sensor 110 and the opening pressure sensor 220 are wirelessly connected to the collecting device 320. Referring to fig. 6, the closing pressure sensor 110 and the opening pressure sensor 220 are wirelessly connected to the collecting device 320. In actual engineering, many times because isolator is more, be not convenient for carry out large-scale wired connection, can help closing a floodgate pressure sensor 110, separating brake pressure sensor 220 and collection system 320 to carry out wireless connection through the mode that increases wireless module this moment. The frequency band of communication also uses the wireless communication frequency band without application, so that the application range of the detection device can be more effectively improved.
In some embodiments of the present invention, the acquisition device 320 may select active and passive power supplies according to actual use requirements, and the antenna of the acquisition device 320 may adopt a split design or an integrated design. The collecting device 320 can be directly arranged in an operating mechanism control box of the isolating switch and directly utilizes DC/AC220V in the operating mechanism control box to obtain electricity. In some embodiments of the present invention, the acquisition device 320 and the monitoring end 310 may perform data transmission through an optical fiber, and the data protocol supports a ModBus _ RTU or an IEC60870-5-103, IEC61850 protocol. The acquisition device 320 can also be wirelessly interconnected with the smart phone, and the acquired related parameters can be read from the smart phone.
In some embodiments of the present invention, a memory is disposed within the acquisition device 320 for data storage. The acquisition device 320 can have data storage and transmission functions through a memory, and is used for storing data according to time, date and tested position.
In some embodiments of the present invention, the acquisition device 320 is further provided with a data communication interface, and the data communication interface is used for implementing data interaction with an external device. The data communication interface may be used to directly connect an external display device. The display can be externally connected through the data communication interface, and even the data can be read by being interconnected with a smart phone. The data communication interface can also be used for receiving angle signals, torque signals and motor power signals. The data communication interface can be connected with other signal acquisition devices 320 through the data communication interface, and the monitoring end 310 can finally view the accessed information at the same time. Therefore, the detection device can be improved into a detection platform, the utilization rate is greatly improved, and the cost is solved. The data communication interface can directly set up a plurality ofly according to the demand, then can satisfy multiple demand simultaneously.
In some embodiments of the present invention, the closing pressure sensor 110 and the opening pressure sensor 220 are passively powered. The passive power supply can be realized by two high-energy lithium batteries, and the high-energy lithium battery can be israel TADIRAN TLH 4902.
In some embodiments of the present invention, the switching pressure sensor 110 and the switching pressure sensor 220 are both connected to a power electronic switch, and the power electronic switch is configured to change the operating states of the switching pressure sensor 110 and the switching pressure sensor 220. The closing pressure sensor 110 and the opening pressure sensor 220 do not need to be in working states all the time after the isolating switch is switched on and off in place, and the closing pressure sensor 110 and the opening pressure sensor 220 can be switched in two states of operation and dormancy through the power electronic switch. After receiving the working signal sent by the collecting device 320, the power electronic switch is turned on to the closing pressure sensor 110 and the opening pressure sensor 220 to work, and the actual power consumption is reduced to a very low level. The service life requirement of 3 to 6 years can be guaranteed on the premise of adopting the high-energy lithium battery, and the method is reliable and stable. Through passive power supply, power electronic switch, wireless communication combination mode, the degree of difficulty that can effectual reduction wiring, and then the maintenance cost in very big reduction later stage.
In some embodiments of the present invention, referring to fig. 5, the switching-on pressure sensor 110 and the switching-off pressure sensor 220 have the same structure, which may facilitate the switching-on pressure sensor 110 and the switching-off pressure sensor 220.
In some embodiments of the present invention, the environmental temperature of the detection device is greater between-40 ℃ and +105 ℃, the detection device should be able to withstand a certain temperature, and the temperature requirements for the modules of the opening pressure sensor 220 and the closing pressure sensor 110 are as follows: the environment temperature is-40 ℃ to +85 ℃, and the sensor shell has certain insulation.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 do not 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.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the embodiments, and those skilled in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The method for detecting the switching-on and switching-off in place of the single-column double-arm vertical telescopic isolating switch is characterized by comprising the following steps of:
closing detection: s11) arranging a closing pressure sensor in a bus static contact rod of the isolating switch; s12), collecting the closing pressure of the bus static contact rod by a closing pressure sensor, wherein the closing pressure exceeds a preset closing pressure threshold value, namely the bus static contact rod is closed in place;
brake opening detection: s21) arranging the opening pressure plate device on the limit mounting plate of the conductive base of the isolating switch, and arranging the opening pressure sensor in the opening pressure plate device; s22) the opening pressure sensor collects the opening pressure of the crank arm extrusion opening pressure plate device of the isolating switch, and the opening pressure exceeds a preset opening pressure threshold value, namely an opening in-place signal.
2. The method for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch according to claim 1, wherein the opening pressing plate device comprises:
the opening pressing plate is arranged on the limit mounting plate of the conductive base and is used for being extruded by the crank arm;
and one end of the compression spring is connected with the opening pressure sensor, and the other end of the compression spring is connected with the opening pressing plate.
3. The method for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch according to claim 1, wherein the closing pressure sensors are arranged on two sides of the bus static contact rod.
4. The utility model provides a perpendicular telescopic isolator divide-shut brake detection device that targets in place of single-column both arms which characterized in that includes:
the closing pressure sensor is arranged in a bus static contact rod of the isolating switch and used for acquiring closing pressure of the bus static contact rod;
the opening pressure plate device is arranged on the limit mounting plate of the conductive base of the isolating switch and used for changing the direction of opening pressure of the crank arm of the isolating switch;
the opening pressure sensor is arranged in the opening pressure plate device and used for collecting opening pressure brought by the crank arm through the opening pressure plate device;
and the monitoring end is respectively electrically connected with the closing pressure sensor and the opening pressure sensor and is used for receiving the closing pressure and the opening pressure and judging whether the isolating switch is in place or not according to a preset closing pressure threshold value and an opening pressure threshold value.
5. The on-off position detection device for the single-column double-arm vertical telescopic isolating switch according to claim 4, wherein the off-brake pressing plate device comprises:
the opening pressing plate is arranged on the limit mounting plate of the conductive base and is used for being extruded by the crank arm;
and one end of the compression spring is connected with the opening pressure sensor, and the other end of the compression spring is connected with the opening pressing plate.
6. The switch-on and switch-off in-place detection device for the single-column double-arm vertical telescopic isolating switch according to claim 4, wherein an acquisition device is electrically connected among the switch-on pressure sensor, the switch-off pressure sensor and the monitoring end; the collecting device is used for receiving switching-on pressure signals and switching-off pressure signals of the switching-on pressure sensor and the switching-off pressure sensor and transmitting the switching-on pressure signals and the switching-off pressure signals to the monitoring end.
7. The switch-on and switch-off in-place detection device for the single-column double-arm vertical telescopic isolating switch according to claim 6, wherein the switch-on pressure sensor and the switch-off pressure sensor are wirelessly connected with the acquisition device.
8. The device for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch according to claim 6, wherein the collecting device is further provided with a data communication interface, and the data communication interface is used for realizing data interaction with external equipment.
9. The switch-on and switch-off in-place detection device of the single-column double-arm vertical telescopic isolating switch as claimed in claim 4, wherein the switch-on pressure sensor and the switch-off pressure sensor are passively powered.
10. The device for detecting the opening and closing in place of the single-column double-arm vertical telescopic isolating switch according to claim 4 or 9, wherein the closing pressure sensor and the opening pressure sensor are both connected with power electronic switches, and the power electronic switches are used for changing the operation states of the closing pressure sensor and the opening pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685940.4A CN112038134A (en) | 2020-07-16 | 2020-07-16 | Method and device for detecting switching-on and switching-off in place of single-column double-arm vertical telescopic isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685940.4A CN112038134A (en) | 2020-07-16 | 2020-07-16 | Method and device for detecting switching-on and switching-off in place of single-column double-arm vertical telescopic isolating switch |
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| CN112038134A true CN112038134A (en) | 2020-12-04 |
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|---|---|---|---|
| CN202010685940.4A Pending CN112038134A (en) | 2020-07-16 | 2020-07-16 | Method and device for detecting switching-on and switching-off in place of single-column double-arm vertical telescopic isolating switch |
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| CN103217245A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Clamping force measurement device used for isolating switch |
| CN204167227U (en) * | 2014-10-10 | 2015-02-18 | 常熟开关制造有限公司(原常熟开关厂） | A kind of circuit breaker |
| CN107785194A (en) * | 2017-11-16 | 2018-03-09 | 国家电网公司 | The disconnecting switch division position discriminating gear and method of a kind of recognizable contact condition |
| CN107831436A (en) * | 2017-12-13 | 2018-03-23 | 湖南长高高压开关有限公司 | A kind of folding-jib disconnecting switch divide-shut brake monitoring device and method in place |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217245A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Clamping force measurement device used for isolating switch |
| CN204167227U (en) * | 2014-10-10 | 2015-02-18 | 常熟开关制造有限公司(原常熟开关厂） | A kind of circuit breaker |
| CN107785194A (en) * | 2017-11-16 | 2018-03-09 | 国家电网公司 | The disconnecting switch division position discriminating gear and method of a kind of recognizable contact condition |
| CN107831436A (en) * | 2017-12-13 | 2018-03-23 | 湖南长高高压开关有限公司 | A kind of folding-jib disconnecting switch divide-shut brake monitoring device and method in place |
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