CN112038132A - Method and device for detecting switching-on and switching-off in place of three-column horizontal rotary isolating switch - Google Patents
Method and device for detecting switching-on and switching-off in place of three-column horizontal rotary 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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- 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]
Abstract
A three-column horizontal rotation type isolating switch opening and closing in-place detection method comprises the following steps: arranging a first attitude sensor and a second attitude sensor on leading electric poles at two sides of an isolating switch through a quick connecting device; closing detection: the method comprises the steps that a first attitude sensor and a second attitude sensor acquire three-dimensional angle information of leading electric poles at two sides of an isolating switch rotating around the axis of the leading electric poles in the switching-on process, and the three-dimensional angle information of the leading electric poles at the two sides exceeds a preset switching-on attitude threshold value, namely, the switching-on is in place; brake opening detection: the first attitude sensor and the second attitude sensor acquire three-dimensional angle information of leading electric poles at two sides of the isolating switch rotating around the axis of the leading electric poles in the brake-separating process, and the three-dimensional angle information of the leading electric poles at the two sides exceeds a preset brake-separating attitude threshold value, namely, the brake-separating is in place. Whether the opening and closing of the brake are in place is detected through the first attitude sensor and the second attitude sensor, and compared with a traditional mode, the anti-interference performance is better, the cost is lower, and the accuracy is higher.
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 three-column horizontal rotary 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 by adopting a low-voltage end auxiliary contact form, 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.
The above methods are all easy to have errors and are unreliable, so that 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 invention provides a method for detecting the opening and closing in place of the three-column horizontal rotary isolating switch, which has a simple process and solves the problem that the opening and closing in place of the three-column horizontal rotary isolating switch cannot be accurately measured. The invention also provides a device for detecting the opening and closing in place of the three-column horizontal rotary isolating switch.
According to the embodiment of the first aspect of the invention, the method for detecting the switching-on and switching-off positions of the three-column horizontal rotary isolating switch comprises the following steps:
arranging a first attitude sensor and a second attitude sensor on leading electric poles at two sides of an isolating switch through a quick connecting device;
closing detection: the first attitude sensor and the second attitude sensor acquire three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the leading electric poles in the switching-on process, and the three-dimensional angle information of the leading electric poles on the two sides exceeds a preset switching-on attitude threshold value, namely, the leading electric poles are switched on in place;
brake opening detection: the first attitude sensor and the second attitude sensor acquire three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the leading electric poles in the brake-separating process, and the three-dimensional angle information of the leading electric poles on the two sides exceeds a preset brake-separating attitude threshold value, namely, the brake-separating is in place.
The method for detecting the opening and closing in place of the three-column horizontal rotary isolating switch provided by the embodiment of the invention at least has the following technical effects: a foundation for rapidly arranging the first attitude sensor and the second attitude sensor on the leading electric poles on the two sides of the isolating switch is provided through the rapid connecting device; the first attitude sensor and the second attitude sensor are arranged on the leading electric poles on the two sides of the isolating switch, so that the acquisition of three-dimensional angle information of the leading electric poles on the two sides of the isolating switch rotating around the axis of the leading electric poles in the switching-on or switching-off process can be realized; and finally, comparing the three-dimensional angle information with a preset closing attitude threshold value and a preset opening attitude threshold value by combining the running state of the isolating switch, so as to judge whether the isolating switch is in place for opening and closing. Compared with the traditional measuring mode, the method has the advantages of better anti-interference performance, lower cost and higher accuracy. In addition, compared with the mode that only one side of the main electric pole is provided with the attitude sensor, the mode that the first attitude sensor and the second attitude sensor are respectively arranged on the two sides can effectively discharge the condition that the switching-on of one side is not in place but the switching-on is judged to be successful by mistake, so that the detection accuracy is higher.
According to some embodiments of the invention, the quick connection device comprises a first clamping component and a second clamping component, wherein a mounting plate is arranged on the second clamping component, and the first clamping component and the second clamping component are used for fixing the first attitude sensor or the second attitude sensor on two side leading electric poles of the isolating switch through the mounting plate.
According to the embodiment of the second aspect of the invention, the three-column horizontal rotary isolating switch opening and closing in-place detection device comprises: the first attitude sensor and the second attitude sensor are used for acquiring three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the isolating switch; the quick connecting device is used for fixing the first attitude sensor and the second attitude sensor on the leading electric poles at two sides of the isolating switch; and the local detection device is electrically connected with the first attitude sensor and the second attitude sensor respectively and is used for receiving the three-dimensional angle information sent by the first attitude sensor and the second attitude sensor and judging whether the disconnecting switch is in place or not according to a preset switching-off attitude threshold value and a switching-on attitude threshold value.
The opening and closing in-place detection device for the three-column horizontal rotary isolating switch provided by the embodiment of the invention at least has the following technical effects: the three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the isolating switch can be directly measured through the first attitude sensor and the second attitude sensor; the first attitude sensor and the second attitude sensor can be quickly fixed to the leading electric poles on the two sides of the isolating switch through the quick connecting device; through the local detection device, 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 measuring equipment or system, the cost is lower, the anti-interference performance is stronger, and the accuracy is higher. In addition, compared with the mode that only one side of the main electric pole is provided with the attitude sensor, the mode that the first attitude sensor and the second attitude sensor are respectively arranged on the two sides can effectively discharge the condition that the switching-on of one side is not in place but the switching-on is judged to be successful by mistake, so that the detection accuracy is higher.
According to some embodiments of the invention, the quick connection device comprises a first clamping component and a second clamping component, wherein a mounting plate is arranged on the second clamping component, and the first clamping component and the second clamping component are used for fixing the first attitude sensor or the second attitude sensor on two side leading electric poles of the isolating switch through the mounting plate.
According to some embodiments of the present invention, the three-column horizontal rotation type disconnecting switch opening and closing in-place detection device further comprises a monitoring terminal electrically connected to the local detection device; and the monitoring end is used for receiving the three-dimensional angle information sent by the local detection device.
According to some embodiments of the invention, the first attitude sensor and the second attitude sensor are wirelessly connected to the local detection device, respectively.
According to some embodiments of the invention, the first attitude sensor and the second attitude sensor are both passively powered.
According to some embodiments of the present invention, the local detection device is further provided with a data communication interface, and the data communication interface is used for implementing data interaction with an external device.
According to some embodiments of the present invention, the outer surfaces of the first attitude sensor and the second attitude sensor are covered with a metal film for reducing electromagnetic interference.
According to some embodiments of the invention, the first attitude sensor and the second attitude sensor both use a high-precision gyro accelerometer MPU 6050.
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 an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a first attitude sensor in accordance with an embodiment of the first aspect of the present invention;
FIG. 4 is a schematic structural diagram of a quick connect apparatus according to an embodiment of the first aspect of the present invention;
fig. 5 is a schematic structural diagram of a local detection apparatus 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 first attitude sensor 110, a second attitude sensor 120, a quick-connect device 130, a first clamp member 131, a second clamp member 132, a mounting plate 133, a,
A local detection device 210, a monitoring terminal 220,
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 three-column horizontal rotary 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 positions of the three-column horizontal rotary isolating switch comprises the following steps:
arranging the first attitude sensor 110 and the second attitude sensor 120 on the leading electric poles 310 on two sides of the isolating switch through the quick connecting device 130;
closing detection: the first attitude sensor 110 and the second attitude sensor 120 acquire three-dimensional angle information of leading electric poles 310 on two sides of the isolating switch rotating around the axis of the leading electric poles in the switching-on process, and the three-dimensional angle information of the leading electric poles 310 on the two sides exceeds a preset switching-on attitude threshold value, namely, the switching-on is in place;
brake opening detection: the first attitude sensor 110 and the second attitude sensor 120 collect three-dimensional angle information of the leading electric poles 310 on both sides of the disconnector rotating around their axes during the switching-off process, and the three-dimensional angle information of the leading electric poles 310 on both sides exceeds a preset switching-off attitude threshold value, that is, the switching-off is in place.
To facilitate understanding of some embodiments of the present invention, the switching-on and switching-off process of the three-column horizontal rotary isolating switch will be described:
a switching-on process: the operation mechanism of the isolating switch drives the main conducting pole 310 on the intermediate insulator to horizontally rotate clockwise first until the active contact 320 of the isolating switch touches the limiting part on the main static contact 330, and at the moment, the main conducting pole 310 cannot continuously horizontally rotate and can only turn over around the axis of the main conducting pole counterclockwise under the action of the fork pulling device until closing is completed;
the brake opening process: after the operation mechanism of the isolating switch operates, the leading electric pole 310 is turned around the axis of the main electric pole, and after the electric pole is not turned any more, the operation mechanism of the isolating switch continues to drive the leading electric pole 310 on the middle insulator to rotate anticlockwise to the opening position, so that the opening action is completed.
Referring to fig. 1 to 4, in order to ensure that the operating posture of the disconnector can be accurately detected, the installation positions of the first posture sensor 110 and the second posture sensor 120 are first selected and reasonably arranged.
In some embodiments of the present invention, the first attitude sensor 110 and the second attitude sensor 120 are disposed on two side leading poles 310 of the isolating switch, one on each side, and are respectively used for collecting three-dimensional angle information of the two side leading poles 310 rotating around their own axes. The installation of the first attitude sensor 110 and the second attitude sensor 120 needs to be completed by the quick-connect device 130, and the quick-connect device 130 can improve the accuracy of the installation of the first attitude sensor 110 and the second attitude sensor 120 on the one hand, and also increase the replaceability of the first attitude sensor 110 and the second attitude sensor 120 on the other hand, for example: if a certain attitude sensor on one isolating switch has a fault, one isolating switch can be disassembled from another isolating switch which is normally switched on and can not change the switching-on state for a long time, and the use in an emergency state can be met. And finally, after the switching-on detection is started, acquiring three-dimensional angle information of two sides of the leading electric pole 310 through the first attitude sensor 110 and the second attitude sensor 120, and judging that the switching-on is in place if the three-dimensional angle information of the leading electric pole 310 of the two sides exceeds a preset switching-on attitude threshold value. Similarly, after the opening detection is started, the three-dimensional angle information of the leading electric poles 310 on both sides is collected by the first attitude sensor 110 and the second attitude sensor 120, and if the three-dimensional angle information exceeds a preset opening attitude threshold value, it can be determined that the opening is in place.
The following briefly describes the process of closing detection and opening detection.
Closing detection: when the disconnector is closed, the leading electric pole 310 of the disconnector starts to rotate clockwise and horizontally, and at this time, the first attitude sensor 110 and the second attitude sensor 120 start to operate. The main conducting pole 310 continues to rotate horizontally until the active contact 320 of the isolating switch touches the stopper on the main fixed contact 330, and the main conducting pole 310 starts to rotate around its own axis to the switching-on position. In the process that the leading electric pole 310 rotates around the axis of the leading electric pole, the first attitude sensor 110 and the second attitude sensor 120 continuously obtain the three-dimensional angle information of the leading electric pole 310 on the two sides and transmit the three-dimensional angle information to the local detection device 210, and the local detection device 210 performs judgment, and when the collected three-dimensional angle information of the leading electric poles 310 on the two sides exceeds a preset switching-on attitude threshold value, the switching-on is judged to be completed.
Brake opening detection: when the disconnecting switch is opened, the leading pole 310 of the disconnecting switch starts to rotate around its own axis, and at this time, the first attitude sensor 110 and the second attitude sensor 120 start to operate. The leading pole 310 continues to rotate around its own axis, and after the pole is no longer turned over, the operating mechanism of the isolating switch drives the leading pole 310 on the intermediate insulator to rotate counterclockwise to the opening position. In the switching-off process, the first attitude sensor 110 and the second attitude sensor 120 continuously acquire the three-dimensional angle information of the two side leading electric poles 310 and transmit the three-dimensional angle information to the local detection device 210, and the local detection device 210 performs judgment, and when the acquired three-dimensional angle information of the two side leading electric poles 310 exceeds a preset switching-off attitude threshold value, the switching-off is judged to be completed.
According to the method for detecting the opening and closing in place of the three-column horizontal rotary isolating switch, the quick connection device 130 provides a basis for quickly arranging the first attitude sensor 110 and the second attitude sensor 120 on the leading electric poles 310 on the two sides of the isolating switch; the first attitude sensor 110 and the second attitude sensor 120 are arranged on the leading electric poles 310 on the two sides of the isolating switch, so that the acquisition of three-dimensional angle information of the leading electric poles 310 on the two sides of the isolating switch rotating around the axis of the leading electric poles in the switching-on or switching-off process can be realized; and finally, comparing the three-dimensional angle information with a preset switching-on attitude threshold value and switching-off attitude threshold value by combining the running state of the isolating switch, so as to judge whether the switching-on and switching-off of the isolating switch are in place. Compared with the traditional measurement mode, the method has the advantages of better anti-interference performance, lower cost and higher accuracy. In addition, compared with the mode that the attitude sensor is arranged only on one side of the main electric pole 310, the mode that the first attitude sensor 110 and the second attitude sensor 120 are respectively arranged on two sides can effectively discharge the condition that the switching-on one side is not in place but is judged to be successful by mistake, so that the detection accuracy is higher.
In some embodiments of the present invention, referring to fig. 2 and 4, the quick connection device 130 includes a first clamping component 131 and a second clamping component 132, the second clamping component 132 is provided with a mounting plate 133, and the first clamping component 131 and the second clamping component 132 are used for fixing the first attitude sensor 110 or the second attitude sensor 120 on the two side leading poles 310 of the disconnecting switch through the mounting plate 133. Referring to fig. 4, the bodies of the first clamping member 131 and the second clamping member 132 are symmetrical semi-circular structures, and the circular concave surfaces of the two parts are oppositely arranged to form a fastening space similar to a circle. The second clamping member 132 is provided with a mounting plate 133, and the mounting plate 133 is used for mounting the first attitude sensor 110 or the second attitude sensor 120. The mounting plate 133 is generally disposed tangentially to the second clamping member 132, and the tangential disposition can make the three-dimensional angle information collected by the first attitude sensor 110 or the second attitude sensor 120 less variable, which is more beneficial to the subsequent data processing. After the first attitude sensor 110 or the second attitude sensor 120 is fixed on the mounting plate 133, the first attitude sensor 110 or the second attitude sensor 120 is arranged on the leading electric pole 310 of the disconnector through the first clamping component 131 and the second clamping component 132, and usually, the first attitude sensor 110 and the second attitude sensor 120 are respectively arranged on the leading electric poles 310 on both sides through a set of quick connection devices 130. Both sides of the first clamping component 131 and the second clamping component 132 are provided with mounting holes, so that the locking and mounting can be conveniently performed through fastening devices such as bolts, and the mounting of the quick connecting device 130 can also be directly completed through a welding mode. In some embodiments of the present invention, referring to fig. 3, the first posture sensor 110 and the second posture sensor 120 are provided with protruding plate-like structures on both sides, and the plate-like structures are provided with through holes for fixing to the quick connector 130. When the first posture sensor 110, the second posture sensor 120 and the quick connection device 130 are actually assembled, through holes corresponding to the first posture sensor 110 and the second posture sensor 120 are formed in the mounting plate 133 of the quick connection device 130, the through holes are fixed through bolts, and an insulating cushion layer is arranged on the inner side of the mounting plate. The through-holes of the first posture sensor 110, the second posture sensor 120, and the quick-connect device 130 are all generally set to have a diameter of 6 mm.
According to the embodiment of the second aspect of the invention, the three-column horizontal rotary isolating switch opening and closing in-place detection device comprises: a first attitude sensor 110, a second attitude sensor 120, a quick-connect device 130, a local detection device 210. The first attitude sensor 110 and the second attitude sensor 120 are used for acquiring three-dimensional angle information of the leading electric poles 310 on two sides of the isolating switch rotating around the axis of the isolating switch; the quick connection device 130 is used for fixing the first attitude sensor 110 and the second attitude sensor 120 on two side leading electric poles 310 of the isolating switch; the local detection device 210 is electrically connected to the first attitude sensor 110 and the second attitude sensor 120, respectively, and is configured to receive the three-dimensional angle information sent by the first attitude sensor 110 and the second attitude sensor 120 and determine whether the isolator is in place according to a preset opening attitude threshold value and a preset closing attitude threshold value.
Refer to fig. 1 to 6. When the disconnector needs to be switched on, at this time, the local detection device 210 may send a switching-on detection signal, the first attitude sensor 110 and the second attitude sensor 120 start to operate and start to continuously acquire three-dimensional angle information of the leading electric poles 310 on both sides, and transmit the three-dimensional angle information to the local detection device 210, the local detection device 210 determines whether the disconnector is switched on in place by continuously comparing the three-dimensional angle information of the leading electric poles 310 on both sides with a switching-on attitude threshold value, and when the three-dimensional angle information of the leading electric poles 310 on both sides exceeds the switching-on attitude threshold value at the same time, it is determined that the disconnector is switched. When the disconnecting switch needs to be opened, at this time, the local detection device 210 sends an opening detection signal, the first attitude sensor 110 and the second attitude sensor 120 start to work and start to continuously acquire the three-dimensional angle information of the two side leading electric poles 310, and transmit the three-dimensional angle information of the two side leading electric poles 310 to the local detection device 210, the local detection device 210 judges whether the opening is in place or not by comparing the three-dimensional angle information of the two side leading electric poles 310 with the opening attitude threshold value, and when the three-dimensional angle information of the two side leading electric poles 310 exceeds the opening attitude threshold value at the same time, the opening of the disconnecting switch is determined to be in place.
According to the three-column horizontal rotation type disconnecting switch opening and closing in-place detection device provided by the embodiment of the invention, the three-dimensional angle information of the leading electric poles 310 on two sides of the disconnecting switch rotating around the axis of the disconnecting switch can be directly measured through the first attitude sensor 110 and the second attitude sensor 120; the first attitude sensor 110 and the second attitude sensor 120 can be quickly fixed to the two side leading electric poles 310 of the isolating switch through the quick connecting device 130; through the local detection device 210, whether the current opening and closing state is completed or not can be judged, and whether the actual opening and closing 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. In addition, compared with the mode that the attitude sensor is arranged only on one side of the main electric pole 310, the mode that the first attitude sensor 110 and the second attitude sensor 120 are respectively arranged on two sides can effectively discharge the condition that the switching-on one side is not in place but is judged to be successful by mistake, so that the detection accuracy is higher.
In some embodiments of the present invention, referring to fig. 2 and 4, the quick connection device 130 includes a first clamping component 131 and a second clamping component 132, the second clamping component 132 is provided with a mounting plate 133, and the first clamping component 131 and the second clamping component 132 are used for fixing the first attitude sensor 110 or the second attitude sensor 120 on the two side leading poles 310 of the disconnecting switch through the mounting plate 133. Referring to fig. 4, the bodies of the first clamping member 131 and the second clamping member 132 are symmetrical semi-circular structures, and the circular concave surfaces of the two parts are oppositely arranged to form a fastening space similar to a circle. The second clamping member 132 is provided with a mounting plate 133, and the mounting plate 133 is used for mounting the first attitude sensor 110 or the second attitude sensor 120. The mounting plate 133 is generally disposed tangentially to the second clamping member 132, and the tangential disposition can make the three-dimensional angle information collected by the first attitude sensor 110 or the second attitude sensor 120 less variable, which is more beneficial to the subsequent data processing. After the first attitude sensor 110 or the second attitude sensor 120 is fixed on the mounting plate 133, the first attitude sensor 110 or the second attitude sensor 120 is arranged on the leading electric pole 310 of the disconnector through the first clamping component 131 and the second clamping component 132, and usually, the first attitude sensor 110 and the second attitude sensor 120 are respectively arranged on the leading electric poles 310 on both sides through a set of quick connection devices 130. Both sides of the first clamping component 131 and the second clamping component 132 are provided with mounting holes, so that the locking and mounting can be conveniently performed through fastening devices such as bolts, and the mounting of the quick connecting device 130 can also be directly completed through a welding mode. In some embodiments of the present invention, referring to fig. 3, the first posture sensor 110 and the second posture sensor 120 are provided with protruding plate-like structures on both sides, and the plate-like structures are provided with through holes for fixing to the quick connector 130. When the first posture sensor 110, the second posture sensor 120 and the quick connection device 130 are actually assembled, through holes corresponding to the first posture sensor 110 and the second posture sensor 120 are formed in the mounting plate 133 of the quick connection device 130, the through holes are fixed through bolts, and an insulating cushion layer is arranged on the inner side of the mounting plate. The through-holes of the first posture sensor 110, the second posture sensor 120, and the quick-connect device 130 are all generally set to have a diameter of 6 mm.
In some embodiments of the present invention, referring to fig. 6, the three-column horizontal rotary disconnecting switch opening and closing in-place detection device further includes a monitoring terminal 220 electrically connected to the local detection device 210; the monitoring end 220 is used for receiving the three-dimensional angle information sent by the local detection device 210. In practical application, in order to further save cost, the process of detecting and judging the in-place state of the disconnecting switch and the closing switch of the isolating switch can be transferred to the monitoring end 220, and the local detection device 210 only carries out simple data acquisition and transmission, so that the three-dimensional angle information acquired by all the local detection devices 210 in a large range can be gathered to the monitoring end 220 for operation, and a large amount of cost can be saved. When the three-dimensional angle information collected by the local detection devices 210 is actually gathered, only the coded addresses are required to be added for distinguishing, and the situation that the closing information of different disconnecting switches is mixed up can be guaranteed. In addition, when the number of local detection devices 210 to be collected is still too large or the transmission distance is long, a switch can be added as intermediate switching, so that the number and difficulty of wiring can be effectively reduced, and finally, the collection of the three-dimensional angle information of the regional disconnecting switch and the closing switch can be completed at the monitoring end 220, and whether the monitoring is in place or not can be judged. 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 first attitude sensor 110 and the second attitude sensor 120 are wirelessly connected to the local detection device 210, respectively. Referring to fig. 6, in practical engineering, many times, it is inconvenient to perform large-scale wired connection due to many isolation switches, and at this time, wireless connection between the first attitude sensor 110 and the second attitude sensor 120 and the local detection device 210 may be facilitated by adding a wireless module. 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. The antenna of the local detection device 210 may be designed separately or integrally. The local sensing device 210 may be located directly in the operator control box of the isolator switch and draw power directly from the DC/AC220V in the operator control box. In some embodiments of the present invention, the local detection device 210 and the monitoring end 220 may perform data transmission through an optical fiber, where a data protocol supports a ModBus _ RTU or an iec 60870-5-103 or an iec 61850 protocol. The local detection device 210 may also be wirelessly interconnected with a smart phone, and the collected relevant parameters may be read from the smart phone.
In some embodiments of the present invention, a memory is disposed within local detection device 210 for data storage. The local detection device 210 may have data storage and transmission functions through a memory, and is used for storing data according to time, date and measured electric position.
In some embodiments of the present invention, the local detection device 210 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. Therefore, the local detection device 210 or the monitoring end 220 can be improved into a detection platform, the utilization rate is greatly improved, and the cost is reduced. 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 outer surfaces of the first attitude sensor 110 and the second attitude sensor 120 are covered with a metal film for reducing electromagnetic interference. The addition of the metal film to reduce electromagnetic interference can effectively improve the detection accuracy of the first attitude sensor 110 and the second attitude sensor 120 and the data transmission accuracy.
In some embodiments of the present invention, each of the first attitude sensor 110 and the second attitude sensor 120 generally mainly includes a gyro accelerometer, a signal processing module, a battery system, and a wireless transmission system. Specifically, the first attitude sensor 110 and the second attitude sensor 120 may both employ a gyro-accelerometer MPU6050 with high accuracy. The original data measured by the MPU6050 is read through the signal processing module, the original data passes through the attitude resolver integrated in the signal processing module, and after the dynamic Kalman filtering algorithm is matched, the current attitude, namely three-dimensional angle information, can be accurately output in a dynamic environment, the attitude measurement precision and the stability are high, and X, Y, Z shaft angles can be output simultaneously in a wireless mode.
In some embodiments of the present invention, the first attitude sensor 110 and the second attitude sensor 120 are both passively powered. The passive power supply can be realized by two high-energy lithium batteries, and the high-energy lithium battery can be israel TAD I RAN TLH 4902.
In some embodiments of the present invention, a power electronic switch is connected to each of the first attitude sensor 110 and the second attitude sensor 120, and is configured to change an operation state of each of the first attitude sensor 110 and the second attitude sensor 120. The first attitude sensor 110 and the second attitude sensor 120 do not need to be in a working state all the time after the disconnecting switch is switched on and off in place, and the first attitude sensor 110 and the second attitude sensor 120 can be switched between a running state and a dormant state through the power electronic switch. After receiving the working signal sent by the local detection device 210, the power electronic switch turns on the first attitude sensor 110 and the second attitude sensor 120 to work, and the actual power consumption is reduced to be very low. 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, the environmental temperature of the detection device is a large span between-40 ℃ and +105 ℃, the detection device should be able to withstand a certain temperature, and the temperature requirements for the first attitude sensor 110 and the second attitude sensor 120 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. A three-column horizontal rotation type isolating switch opening and closing in-place detection method is characterized by comprising the following steps:
arranging a first attitude sensor and a second attitude sensor on leading electric poles at two sides of an isolating switch through a quick connecting device;
closing detection: the first attitude sensor and the second attitude sensor acquire three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the leading electric poles in the switching-on process, and the three-dimensional angle information of the leading electric poles on the two sides exceeds a preset switching-on attitude threshold value, namely, the leading electric poles are switched on in place;
brake opening detection: the first attitude sensor and the second attitude sensor acquire three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the leading electric poles in the brake-separating process, and the three-dimensional angle information of the leading electric poles on the two sides exceeds a preset brake-separating attitude threshold value, namely, the brake-separating is in place.
2. The method for detecting the opening and closing positions of the three-column horizontal rotation type isolating switch according to claim 1, wherein the quick connection device comprises a first clamping component and a second clamping component, a mounting plate is arranged on the second clamping component, and the first clamping component and the second clamping component are used for fixing the first attitude sensor or the second attitude sensor on two side leading electric poles of the isolating switch through the mounting plate.
3. The utility model provides a three-column horizontal rotation type isolator divide-shut brake detection device that targets in place which characterized in that includes:
the first attitude sensor and the second attitude sensor are used for acquiring three-dimensional angle information of leading electric poles on two sides of the isolating switch rotating around the axis of the isolating switch;
the quick connecting device is used for fixing the first attitude sensor and the second attitude sensor on the leading electric poles at two sides of the isolating switch;
and the local detection device is electrically connected with the first attitude sensor and the second attitude sensor respectively and is used for receiving the three-dimensional angle information sent by the first attitude sensor and the second attitude sensor and judging whether the disconnecting switch is in place or not according to a preset switching-off attitude threshold value and a switching-on attitude threshold value.
4. The switch-on/switch-off in-place detection device for the three-column horizontal rotation type isolating switch according to claim 3, wherein the quick connection device comprises a first clamping component and a second clamping component, a mounting plate is arranged on the second clamping component, and the first clamping component and the second clamping component are used for fixing the first attitude sensor or the second attitude sensor on two side leading electric poles of the isolating switch through the mounting plate.
5. The switch-on/switch-off in-place detection device of the three-column horizontal rotary isolating switch according to claim 3, further comprising a monitoring end electrically connected with the local detection device; and the monitoring end is used for receiving the three-dimensional angle information sent by the local detection device.
6. The three-column horizontal rotary isolating switch opening and closing in-place detection device according to claim 3 or 5, wherein the first attitude sensor and the second attitude sensor are respectively in wireless connection with the local detection device.
7. The switch-on/switch-off in-place detection device of the three-column horizontal rotation type isolating switch according to claim 3, wherein the first attitude sensor and the second attitude sensor are both passively powered.
8. The switch-on/switch-off in-place detection device of the three-column horizontal rotation type isolating switch according to claim 3, wherein the local detection 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/switch-off in-place detection device of the three-column horizontal rotation type isolating switch according to claim 3, wherein the outer surfaces of the first attitude sensor and the second attitude sensor are covered with metal films for reducing electromagnetic interference.
10. The switch-on/switch-off in-place detection device of the three-column horizontal rotation type isolating switch according to claim 3, wherein the first attitude sensor and the second attitude sensor both adopt a high-precision gyro accelerometer MPU 6050.
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| CN202010685930.0A CN112038132A (en) | 2020-07-16 | 2020-07-16 | Method and device for detecting switching-on and switching-off in place of three-column horizontal rotary isolating switch |
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| CN202010685930.0A CN112038132A (en) | 2020-07-16 | 2020-07-16 | Method and device for detecting switching-on and switching-off in place of three-column horizontal rotary isolating switch |
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Application publication date: 20201204 |