CN111981971A - Method and device for detecting switching-on and switching-off in-place of folding arm type isolating switch - Google Patents
Method and device for detecting switching-on and switching-off in-place of folding arm type isolating switch Download PDFInfo
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- CN111981971A CN111981971A CN202010686552.8A CN202010686552A CN111981971A CN 111981971 A CN111981971 A CN 111981971A CN 202010686552 A CN202010686552 A CN 202010686552A CN 111981971 A CN111981971 A CN 111981971A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
Abstract
The method for detecting the switching-on and switching-off in place of the folding arm type isolating switch comprises the following steps of: arranging the attitude sensor on a conductive arm of the isolating switch through a quick connecting device; closing detection: the method comprises the following steps that a gesture sensor collects three-dimensional angle information of a conductive arm of an isolating switch in a switching-on process, and the three-dimensional angle information exceeds a preset switching-on gesture threshold value, namely, the switching-on is in place; brake opening detection: the attitude sensor collects three-dimensional angle information of a conductive arm of the isolating switch in the switching-off process, and the switching-off is in place when the three-dimensional angle information exceeds a preset switching-off attitude threshold value. 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 acquisition of the opening pressure in the opening process is realized through the quick connecting device and the attitude sensor. The invention judges the switch-on and switch-off of the isolating switch in place through the attitude sensor. Compared with the traditional mode, the method has the advantages of good anti-interference performance, low cost and high accuracy.
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 the switching-on and switching-off in-place of a folding arm type 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 mode is easy to have errors and is 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 folding arm type isolating switch, which has a simple process and solves the problem that the opening and closing in place of the folding arm type isolating switch cannot be accurately measured. The invention also provides a folding arm type disconnecting switch opening and closing in-place detection device.
According to the embodiment of the first aspect of the invention, the method for detecting the opening and closing in place of the folding arm type isolating switch comprises the following steps:
arranging the attitude sensor on a conductive arm of the isolating switch through a quick connecting device;
closing detection: the attitude sensor acquires three-dimensional angle information of a conductive arm of the isolating switch in a switching-on process, and the three-dimensional angle information exceeds a preset switching-on attitude threshold value, namely the switching-on is in place;
brake opening detection: the attitude sensor collects three-dimensional angle information of the conductive arm of the isolating switch in the switching-off process, and the switching-off is in place when the three-dimensional angle information exceeds a preset switching-off attitude threshold value.
The method for detecting the opening and closing in place of the folding arm type isolating switch according to the embodiment of the invention at least has the following technical effects: a foundation for rapidly arranging the attitude sensor on the conductive arm of the isolating switch is provided through a rapid connecting device; the attitude sensor is arranged on the conductive arm of the isolating switch, so that the three-dimensional angle information of the conductive arm of the isolating switch can be acquired in the switching-on or switching-off process; 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 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 quick-connect apparatus includes a mounting plate and a fastener for securing the attitude sensor to the mounting plate, the fastener also being for securing the mounting plate to the conductive arm.
According to some embodiments of the invention, the attitude sensor is disposed on both the upper conductive arm and the lower conductive arm of the disconnector.
According to the second aspect of the invention, the folding arm type isolating switch opening and closing in-place detection device comprises: the attitude sensor is used for acquiring three-dimensional angle information of a conductive arm of the isolating switch; the quick connecting device is used for fixing the attitude sensor on a conductive arm of the isolating switch; and the local detection device is electrically connected with the attitude sensor and is used for receiving the three-dimensional angle information sent by the attitude sensor and judging whether the disconnecting switch is switched on and off in place according to a preset switching-off attitude threshold value and a switching-on attitude threshold value. Compared with the traditional measuring equipment and system, the anti-interference performance is better, the cost is lower, and the accuracy is higher.
The folding arm type disconnecting switch opening and closing in-place detection device provided by the embodiment of the invention at least has the following technical effects: the three-dimensional state of the isolated conductive arm can be directly measured through the attitude sensor; the gesture sensor can be quickly fixed on the conductive arm of the isolating switch through the quick connecting device; whether the current opening and closing state is finished or not can be judged through the local detection device, and whether the 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 quick-connect apparatus includes a mounting plate and a fastener for securing the attitude sensor to the mounting plate, the fastener also being for securing the mounting plate to the conductive arm.
According to some embodiments of the present invention, the folding arm type disconnecting switch opening and closing in-place detection device further includes 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 attitude sensor is wirelessly connected with the local detection device.
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 invention, an outer surface of the attitude sensor is covered with a metal thin film for reducing electromagnetic interference.
According to some embodiments of the invention, the attitude sensor employs 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 schematic structural view of a main conductive arm of an isolating switch according to an embodiment of the first aspect of the invention;
FIG. 2 is an enlarged view of a portion of an upper conductive arm in accordance with an embodiment of the first aspect of the present invention;
FIG. 3 is an enlarged view of a portion of a lower conductive arm in accordance with an embodiment of the first aspect of the present invention;
FIG. 4 is a schematic diagram of an attitude sensor in accordance with an embodiment of the first aspect of the present invention;
FIG. 5 is a schematic structural view of a mounting plate 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 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 opening and closing in-place of the folding arm type disconnecting switch according to the embodiment of the first aspect of the invention is described below with reference to fig. 1 to 6.
According to the embodiment of the first aspect of the invention, the method for detecting the opening and closing in place of the folding arm type isolating switch comprises the following steps:
arranging the attitude sensor 110 on the conductive arm 310 of the isolating switch through the quick connecting device 120;
closing detection: the attitude sensor 110 acquires three-dimensional angle information of the conductive arm 310 of the isolating switch in the switching-on process, and the three-dimensional angle information exceeds a preset switching-on attitude threshold value, namely the switching-on is in place;
brake opening detection: the attitude sensor 110 collects three-dimensional angle information of the conductive arm 310 of the disconnecting switch in the switching-off process, and the switching-off is in place when the three-dimensional angle information exceeds a preset switching-off attitude threshold value.
Referring to fig. 1 to 6, in order to ensure that the operating posture of the disconnector can be accurately detected, the installation position of the posture sensor 110 is first selected and reasonably arranged. In some embodiments of the present invention, the attitude sensor 110 is disposed on a conductive arm 310 of the isolator switch. Conductive arm 310 generally includes an upper conductive arm 311 and a lower conductive arm 312. The attitude sensor 110 is arranged on the upper conductive arm 311 or the lower conductive arm 312, and can detect whether the disconnecting switch is in place. The installation of the attitude sensor 110 needs to be completed by the quick-connect device 120, by which the accuracy of the installation of the attitude sensor 110 can be improved on the one hand, and the replaceability of the attitude sensor 110 on the other hand can be improved, for example: if the attitude sensor 110 on one isolating switch fails, one isolating switch with two attitude sensors 110 can be disassembled from the other isolating switch, so that the isolating switch can be used in an emergency. Finally, acquiring three-dimensional angle information of the conducting arm 310 through the attitude sensor 110 after the switching-on detection is started, and judging that the switching-on is in place if the three-dimensional angle information exceeds a preset switching-on attitude threshold value; after the opening detection is started, the three-dimensional angle information of the conductive arm 310 is acquired through the attitude sensor 110, and if the three-dimensional angle information exceeds a preset opening attitude threshold value, the opening is determined to be in place.
The following briefly describes the process of closing detection and opening detection.
Closing detection: when the disconnector is closed, the conductive arm 310 of the disconnector is folded upwards, and at this time, the attitude sensor 110 starts to work. The conductive arm 310 continues the upward folding motion until the clamping action is complete. In the process of the motion of the conductive arm 310, the attitude sensor 110 continuously collects the three-dimensional angle information of the conductive arm 310 and transmits 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 conductive arm 310 exceeds a preset closing attitude threshold value, the closing is judged to be completed.
Brake opening detection: when the disconnecting switch is opened, the conductive arm 310 of the disconnecting switch moves in a folding manner downwards, and the attitude sensor 110 starts to work. The downward folding motion of the conductive arm 310 continues. In the switching-off process, the attitude sensor 110 continuously collects the three-dimensional angle information of the conductive arm 310 and transmits 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 conductive arm 310 exceeds a preset switching-off attitude threshold value, the switching-off is judged to be completed.
According to the method for detecting the switching-on and switching-off in-place of the folding arm type disconnecting switch, the basis for quickly arranging the attitude sensor 110 on the conducting arm 310 of the disconnecting switch is provided through the quick connecting device 120; the attitude sensor 110 arranged on the conductive arm 310 of the isolating switch can realize the acquisition of three-dimensional angle information of the conductive arm 310 of the isolating switch in the switching-on or switching-off process; 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 some embodiments of the present invention, referring to fig. 4 and 5, the quick-connect apparatus 120 includes a mounting plate 121 and a fastener for securing the attitude sensor 110 to the mounting plate 121, the fastener also being used to secure the mounting plate 121 to the conductive arm 310. In some embodiments of the present invention, the mounting plate is provided with through holes on both sides thereof, which facilitates the installation of the attitude sensor 110 by fastening members such as bolts. In some embodiments of the present invention, referring to fig. 4, the posture sensor 110 protrudes from both sides of the sheet structure, and the sheet structure is provided with a through hole to facilitate fixing to the mounting plate 121. When the attitude sensor 110 and the quick connection device 120 are actually assembled, a through hole corresponding to the attitude sensor 110 is formed in the mounting plate 121 of the quick connection device 120, the through hole passes through the bolt and the attitude sensor 110, and an insulating cushion layer is arranged on the inner side of the mounting plate. The through holes of the attitude sensor 110 and the quick-connect device 120 are generally both set to be 6mm in diameter.
In some embodiments of the present invention, referring to fig. 1-3, attitude sensors 110 are disposed on both the upper conductive arm 311 and the lower conductive arm 312 of the isolator switch. In actual detection, when the disconnecting switch is switched on, the upper conductive arm 311 or the lower conductive arm 312 has a deformation problem, and at this time, if the attitude sensor 110 is just arranged on the deformed conductive arm 310, the acquired three-dimensional angle information may be inaccurate, and then the switching-on is determined by mistake, so that the actual switching-on may be insufficient, and finally, the power supply fault of the whole power grid may be caused. Therefore, the problem can be effectively avoided by the upper conductive arm 311 and the lower conductive arm 312, and switching-on or switching-off can be determined only when the three-dimensional angle information collected by the two attitude sensors 110 meets the requirement. In this way, it is also possible to find a part of the disconnector which itself is defective, for example: if the conductive arm 310 of some disconnecting switches is deformed, the checking of whether a fault occurs can be completed by comparing the three-dimensional angle information of the existing disconnecting switches with the original three-dimensional angle information. In addition, self-checking of the attitude sensors 110 can be realized by arranging a plurality of attitude sensors 110 at the same position, problems can be found early, and faults of the attitude sensors 110 can be avoided being found in subsequent use.
According to the second aspect of the invention, the folding arm type isolating switch opening and closing in-place detection device comprises: attitude sensor 110, quick connect device 120, local detection device 210. The attitude sensor 110 is used for acquiring three-dimensional angle information of the conductive arm 310 of the isolating switch; a quick-connect device 120 for securing the attitude sensor 110 to the conductive arm 310 of the isolator; the local detection device 210 is electrically connected to the attitude sensor 110, and configured to receive the three-dimensional angle information sent by the attitude sensor 110 and determine whether the isolator is in place according to a preset opening attitude threshold value and a closing attitude threshold value.
Refer to fig. 1 to 6. When the disconnecting switch needs to be switched on, at this time, the local detection device 210 sends a switching-on detection signal, the attitude sensor 110 starts to work, the attitude sensor 110 starts to continuously acquire three-dimensional angle information of the conductive arm 310 and transmits the three-dimensional angle information to the local detection device 210, the local detection device 210 finishes in-place switching-on judgment by continuously comparing the three-dimensional angle information with a switching-on attitude threshold value, and when the three-dimensional angle information exceeds the switching-on attitude threshold value, the disconnecting switch is determined to be switched on in place. When the disconnecting switch needs to be opened, at this time, the local detection device 210 sends an opening detection signal, the attitude sensor 110 starts to work, the attitude sensor 110 starts to continuously acquire the three-dimensional angle information of the conductive arm 310 and transmits the three-dimensional angle information to the local detection device 210, the local detection device 210 finishes whether the opening is in place or not by comparing the three-dimensional angle information with the opening attitude threshold value, and when the three-dimensional angle information exceeds the opening attitude threshold value, the opening of the disconnecting switch is determined to be in place.
The folding arm type disconnecting switch opening and closing in-place detection device according to the embodiment of the invention comprises an attitude sensor 110, a position sensor and a signal processing module, wherein the attitude sensor is used for acquiring three-dimensional angle information of a conductive arm 310 of a disconnecting switch; a quick-connect device 120 for securing the attitude sensor 110 to the conductive arm 310 of the isolator; the local detection device 210 is electrically connected to the attitude sensor 110, and configured to receive the three-dimensional angle information sent by the attitude sensor 110 and determine whether the isolator is in place according to a preset opening attitude threshold value and a closing attitude threshold value. Compared with the traditional measuring equipment and system, the anti-interference performance is better, the cost is lower, and the accuracy is higher.
In some embodiments of the present invention, referring to fig. 4 and 5, the quick-connect apparatus 120 includes a mounting plate 121 and a fastener for securing the attitude sensor 110 to the mounting plate 121, the fastener also being used to secure the mounting plate 121 to the conductive arm 310. In some embodiments of the present invention, the mounting plate is provided with through holes on both sides thereof, which facilitates the installation of the attitude sensor 110 by fastening members such as bolts. In some embodiments of the present invention, referring to fig. 2, the posture sensor 110 protrudes from both sides of the sheet structure, and the sheet structure is provided with a through hole to facilitate fixing to the mounting plate 121. When the attitude sensor 110 and the quick connection device 120 are actually assembled, a through hole corresponding to the attitude sensor 110 is formed in the mounting plate 121 of the quick connection device 120, the through hole passes through the bolt and the attitude sensor 110, and an insulating cushion layer is arranged on the inner side of the mounting plate. The through holes of the attitude sensor 110 and the quick-connect device 120 are generally both set to be 6mm in diameter.
In some embodiments of the present invention, referring to fig. 6, the above-mentioned folding arm type 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 switch-on/off in place of the disconnecting switch can be transferred to the monitoring terminal 220, and the local detection device 210 only performs simple data acquisition and transmission, so that the three-dimensional angle information of the disconnecting switch acquired by all the local detection devices 210 in a range can be gathered to one monitoring terminal 220 for operation, and a large amount of cost can be saved. When the three-dimensional angle information collected by the plurality of local detection devices 210 is actually gathered, only the coded address needs to be added for distinguishing, and thus, the three-dimensional angle information of different isolating switches is prevented from being mixed up. 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 further added to serve 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 disconnecting switch switching-on and switching-off of the isolating switch in the area 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 attitude sensor 110 is wirelessly connected to the local detection device 210. Referring to fig. 6, in practical engineering, many times, because many isolation switches are used, it is inconvenient to perform large-scale wired connection, and at this time, a wireless module may be added to help the attitude sensor 110 to perform wireless connection with the local detection device 210. 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 signal local detection device 210 antenna of the local detection device 210 may be designed separately or integrally. The local detection device 210 may be disposed directly within the operator control box of the isolator switch and powered by the DC/AC220V within 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 IEC60870-5-103, IEC61850 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 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 outer surface of the attitude sensor 110 is 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 attitude sensor 110 and the data transmission accuracy.
In some embodiments of the present invention, the attitude sensor 110 generally mainly includes a gyro accelerometer, a signal processing module, a battery system, and a wireless transmission system. The attitude sensor 110 employs a high precision gyro accelerometer MPU6050 in some embodiments of the invention. The original data measured by the MPU6050 is read by 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 attitude sensor 110 is 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, a power electronic switch is connected to attitude sensor 110 for changing the operating state of attitude sensor 110110. The attitude sensor 110 does not need to be in a working state all the time after the disconnecting switch is switched on and off in place, and the attitude sensor 110 can be switched between a running state and a dormant state through the power electronic switch. After receiving the operation signal sent by the local detection device 210, the power electronic switch is turned on to operate the attitude sensor 110, 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, the environmental temperature of the detection device is greater in the range of-20 ℃ to +105 ℃, the detection device should be able to withstand a certain temperature, and the temperature requirements for the attitude sensor 110220 and the attitude sensor 110110 module are as follows: the environment temperature is-20 ℃ 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 folding arm type isolating switch is characterized by comprising the following steps of:
arranging the attitude sensor on a conductive arm of the isolating switch through a quick connecting device;
closing detection: the attitude sensor acquires three-dimensional angle information of a conductive arm of the isolating switch in a switching-on process, and the three-dimensional angle information exceeds a preset switching-on attitude threshold value, namely the switching-on is in place;
brake opening detection: the attitude sensor collects three-dimensional angle information of the conductive arm of the isolating switch in the switching-off process, and the switching-off is in place when the three-dimensional angle information exceeds a preset switching-off attitude threshold value.
2. The folding arm type disconnecting switch and closing in-place detection method according to claim 1, wherein the quick connection device comprises a mounting plate and a fastener for fixing the attitude sensor on the mounting plate, and the fastener is also used for fixing the mounting plate on the conductive arm.
3. The method for detecting the opening and closing positions of the folding arm type disconnecting switch according to claim 1 or 2, wherein the attitude sensors are arranged on the upper conductive arm and the lower conductive arm of the disconnecting switch.
4. The utility model provides a roll over arm-type isolator divide-shut brake detection device that targets in place which characterized in that includes:
the attitude sensor is used for acquiring three-dimensional angle information of a conductive arm of the isolating switch;
the quick connecting device is used for fixing the attitude sensor on a conductive arm of the isolating switch;
and the local detection device is electrically connected with the attitude sensor and is used for receiving the three-dimensional angle information sent by the attitude sensor and judging whether the disconnecting switch is switched on and off in place according to a preset switching-off attitude threshold value and a switching-on attitude threshold value.
5. The folding arm type disconnecting switch and closing in-place detection device according to claim 4, wherein the quick connection device comprises a mounting plate and a fastener for fixing the attitude sensor on the mounting plate, and the fastener is also used for fixing the mounting plate on the conductive arm.
6. The switch-on/off in-place detection device of the folding arm type disconnecting switch according to claim 4, further comprising a monitoring terminal 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.
7. The folding arm type disconnecting switch and closing in-place detection device according to claim 4 or 6, wherein the attitude sensor is wirelessly connected with the local detection device.
8. The folding arm type disconnecting switch and closing in-place detection device according to claim 4, 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/off in-place detection device of the folding arm type disconnecting switch according to claim 4, wherein a metal film is covered on the outer surface of the attitude sensor for reducing electromagnetic interference.
10. The switch-on/off in-place detection device of the folding arm type disconnecting switch according to claim 4, wherein the attitude sensor adopts a high-precision gyro accelerometer MPU 6050.
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| CN113241744A (en) * | 2021-06-09 | 2021-08-10 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Control loop of switch device in transformer substation |
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