CN114720867A - Method and system for detecting opening and closing positions of circuit breaker of current limiting device - Google Patents
Method and system for detecting opening and closing positions of circuit breaker of current limiting device Download PDFInfo
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- CN114720867A CN114720867A CN202210361500.2A CN202210361500A CN114720867A CN 114720867 A CN114720867 A CN 114720867A CN 202210361500 A CN202210361500 A CN 202210361500A CN 114720867 A CN114720867 A CN 114720867A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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Abstract
The invention discloses a method and a system for detecting the opening and closing positions of a current limiting device breaker, wherein a plurality of laser positioning devices are respectively arranged at the bottom of a closing keeping permanent magnet and the top of an opening keeping permanent magnet of a rapid vacuum breaker at intervals, when the breaker receives a closing or opening command, the laser positioning devices horizontally emit laser to the circle center of the closing keeping permanent magnet or the opening keeping permanent magnet, and an armature is completely attracted by the closing keeping permanent magnet or the opening keeping permanent magnet when normal closing or opening is in place, so that the laser emitted by the laser positioning devices is blocked. According to the light source receiving condition of the light receiving part tested by all the laser positioning devices, 01 setting coding is carried out, so that whether switching-on or switching-off is in place or not can be determined according to the coding condition, accurate positioning of the in-place condition of the switching-on and switching-off position of the circuit breaker is achieved, the technical problem that currently, an effective means for accurately positioning the switching-on and switching-off position of the circuit breaker is lacked, and the reliability of operation of a power system is not improved is solved.
Description
Technical Field
The invention relates to the technical field of breaker opening and closing detection, in particular to a method and a system for detecting the opening and closing positions of a breaker of a current limiting device.
Background
With the continuous expansion of the scale of an electric power system, the condition that the short-circuit current in a power grid system exceeds the standard is prominent, particularly the condition that the short-circuit current of a bus exceeds the standard when a main transformer runs in parallel is serious, if the short-circuit fault of the bus in a near area occurs at the moment, a breaker cannot cut off the short-circuit current which exceeds the standard, equipment damage, override trip and bus voltage loss accidents are caused, large-area power failure of a power supply area is caused, and great economic loss is brought.
In order to better limit the over-standard of short-circuit current in an electric power system and ensure the normal operation of the electric power system, a rapid vacuum circuit breaker composed of a vacuum arc-extinguishing chamber and an eddy current driving mechanism is widely applied to the electric power system with excellent breaking performance and action time, but because the stroke of a circuit breaker switch is small, the margin of auxiliary electric shock is large, and the magnet of the circuit breaker has the condition of not-in-place suction, the circuit breaker is difficult to be completely closed and opened in place each time, so that the circuit breaker still has the conditions of not-in-place opening and closing during closing in the frequent action process, and the diagnosis, monitoring, early warning and analysis of the opening and closing positions of the circuit breaker are very important.
Disclosure of Invention
The invention provides a method and a system for detecting the opening and closing positions of a circuit breaker of a current limiting device, which are used for solving the technical problems that an effective means for accurately positioning the opening and closing positions of the circuit breaker is lacked at present and the operation reliability of a power system is not improved.
In view of this, the first aspect of the present invention provides a method for detecting an opening/closing position of a circuit breaker of a current limiting device, including:
the method comprises the following steps that a measurement setting module and a plurality of laser positioning devices are respectively arranged at the bottom of a closing maintaining permanent magnet and the top of an opening maintaining permanent magnet of a rapid vacuum circuit breaker at intervals, and each laser positioning device comprises a light projecting part and a light receiving part;
when the rapid vacuum circuit breaker receives a switching-on or switching-off command, switching-on or switching-off operation is executed, and a laser positioning device is triggered;
carrying out setting coding on the light source receiving condition of the light receiving part of the laser positioning device through the measurement setting module, wherein the output of the light receiving part is 0 if the light source is received, the output of the light receiving part is 1 if the light source is not received, or the output of the light receiving part is 1 if the light source is received, and the output of the light receiving part is 0 if the light source is not received;
and judging whether the switching-on or switching-off position of the rapid vacuum circuit breaker is in place or not according to the setting coding condition of the laser positioning device corresponding to the current switching-on or switching-off command, wherein if all the light receiving parts of the laser positioning device can not receive the light source, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be in place, otherwise, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be not in place.
Optionally, the laser positioning devices at the bottom of the closing holding permanent magnet and the top of the opening holding permanent magnet are distributed at equal intervals.
Optionally, the number of the laser positioning devices at the bottom of the closing holding permanent magnet and the top of the opening holding permanent magnet is 3.
Optionally, the method further comprises:
analyzing the fault reason of the situation that the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place according to the setting code, wherein the fault reason comprises the following steps: the armature jam, the auxiliary contact is not on, the travel switch fault, the screw looseness and the laser positioning device fault.
Optionally, the method further comprises:
and when the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place, performing acousto-optic alarm.
Alternatively, the laser positioning device is a correlation type laser positioning device or a retro-reflection type laser positioning device or a diffusion reflection type laser positioning device.
Alternatively, the laser positioning device is a diffuse reflection type laser positioning device.
The second aspect of the application provides a detection system for the opening and closing positions of a circuit breaker of a current limiting device, which comprises a rapid vacuum circuit breaker, a measurement and setting module and a plurality of laser positioning devices;
the laser positioning device comprises a light projecting part and a light receiving part;
the laser positioning devices are arranged at the bottom of the switching-on maintaining permanent magnet and the top of the switching-off maintaining permanent magnet of the rapid vacuum circuit breaker at intervals;
after receiving a switching-on or switching-off command, the rapid vacuum circuit breaker executes switching-on or switching-off operation and triggers the laser positioning device;
the measurement setting module is used for carrying out setting coding on the light source receiving condition of the light receiving part of the laser positioning device, wherein the output of the light receiving part is 0 if the light source is received, the output of the light receiving part is 1 if the light source is not received, or the output of the light receiving part is 1 if the light source is received, and the output of the light receiving part is 0 if the light source is not received;
and the measurement setting module is also used for judging whether the switching-on or switching-off position of the rapid vacuum circuit breaker is in place or not according to the setting coding condition of the laser positioning device corresponding to the current switching-on or switching-off command, wherein if the light receiving parts of all the laser positioning devices can not receive the light source, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be in place, otherwise, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be not in place.
Optionally, the number of the laser positioning devices at the bottom of the closing maintaining permanent magnet and the top of the opening maintaining permanent magnet of the rapid vacuum circuit breaker is 3, and the 3 laser positioning devices are arranged at equal intervals.
Optionally, the measurement tuning module is further configured to:
analyzing the fault reason of the situation that the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place according to the setting code, wherein the fault reason comprises the following steps: the armature jam, the auxiliary contact is not on, the travel switch fault, the screw looseness and the laser positioning device fault.
According to the technical scheme, the method and the system for detecting the opening and closing positions of the circuit breaker of the current limiting device have the following advantages:
according to the method and the system for detecting the opening and closing positions of the current limiting device breaker, a plurality of laser positioning devices are respectively arranged at intervals at the bottom of a closing keeping permanent magnet and the top of an opening keeping permanent magnet of a rapid vacuum breaker, when the breaker receives a closing or opening command, the laser positioning devices horizontally emit laser to the circle center of the closing keeping permanent magnet or the opening keeping permanent magnet, and an armature is completely attracted by the closing keeping permanent magnet or the opening keeping permanent magnet when normal closing or opening is in place, so that the laser emitted by the laser positioning devices is blocked. And (3) performing 01 setting coding according to the light source receiving condition of the light receiving part tested by all the laser positioning devices, so that whether switching-on or switching-off is in place can be determined according to the coding condition, if all the laser positioning devices can not receive light completely, the armature is attracted in place, the switching-on or switching-off is successful, otherwise, the switching-on or switching-off fails, the accurate positioning of the in-place condition of the switching-on and switching-off positions of the circuit breaker is realized, and the technical problem that the accurate positioning of the switching-on and switching-off positions of the circuit breaker is lacked currently, and the reliability of the operation of a power system is not improved is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for detecting an opening and closing position of a circuit breaker of a current limiting device according to the present invention;
fig. 2 is a schematic structural view of a fast vacuum circuit breaker according to the present invention;
FIG. 3 is a schematic view of the installation position of the laser positioning device provided by the present invention;
FIG. 4 is a schematic diagram of a correlation laser positioning device according to the present invention;
FIG. 5 is a schematic diagram of a retro-reflective laser positioning apparatus according to the present invention;
FIG. 6 is a schematic diagram of a diffuse reflection laser positioning apparatus according to the present invention;
fig. 7 is a schematic structural diagram of a circuit breaker opening and closing position detection system of a current limiting device provided by the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For easy understanding, referring to fig. 1 to 3, an embodiment of a method for detecting an opening/closing position of a circuit breaker of a current limiting device according to the present invention includes:
It should be noted that the structure of the fast vacuum circuit breaker is shown in fig. 2, and mainly includes 2 parts of a vacuum arc-extinguishing chamber and an eddy current driving mechanism, wherein the vacuum arc-extinguishing chamber mainly includes a fixed contact, a movable contact, an upper pull rod, a bellows, a porcelain bushing, and the like, and the eddy current driving mechanism mainly includes a pull rod insulator, a lower pull rod, a closing holding permanent magnet, an armature, a closing holding permanent magnet, an opening coil, an eddy current disc, a closing coil, an opening energy storage capacitor, a closing energy storage capacitor, and a charging power supply. The charging power supply charges the closing (opening) brake energy storage capacitor after the current limiting device is electrified, when the rapid vacuum circuit breaker receives a closing (opening) command of the controller, the rapid vacuum circuit breaker is immediately triggered to conduct the corresponding controllable silicon, the charged energy storage capacitor discharges to the closing (opening) brake coil to generate a pulse current with short duration, the eddy current disc in the pulse magnetic field is subjected to strong thrust due to the induction of eddy current, the moving contact in the vacuum arc extinguish chamber is driven by the pull rod to complete the closing (opening) brake action, and the closing (opening) brake keeps the permanent magnet actuation armature to keep the circuit breaker at the closing (opening) brake position.
In the embodiment of the invention, a plurality of laser positioning devices are respectively arranged at intervals at the bottom of the closing maintaining permanent magnet and the top of the opening maintaining permanent magnet of the rapid vacuum circuit breaker close to the edges. Preferably, 3 laser positioning devices are respectively arranged and uniformly distributed at equal intervals, as shown in fig. 3 (taking a diffuse reflection type laser positioning device as an example), the laser positioning devices 1-3 are used for detecting the closing in place, and the laser positioning devices 4-6 are used for detecting the opening in place. The laser positioning device uses the photoelectric sensing technology, the light projected by the light projection part is shielded or reflected according to different detection objects, and the amount reaching the light receiving part is changed. The light receiving part detects the change of the light and converts the light into an electric signal, and the electric signal is converted into a digital signal of 0 or 1 through D/A and then output. And the measurement setting module acquires an output signal of the light receiving part of the laser positioning device to perform setting coding.
And 102, after the rapid vacuum circuit breaker receives a switching-on or switching-off command, executing switching-on or switching-off operation and triggering the laser positioning device.
It should be noted that, after the rapid vacuum circuit breaker receives a switching-on or switching-off command, the switching-on or switching-off operation is executed according to the switching-on or switching-off command, and the laser positioning device is triggered. Namely, when the rapid vacuum circuit breaker receives a switching-on command, the rapid vacuum circuit breaker executes switching-on operation and triggers the laser positioning device to work; and when the rapid vacuum circuit breaker receives a switching-off command, the switching-off operation is executed, and meanwhile, the laser positioning device is triggered to work.
And 103, carrying out setting coding on the light source receiving condition of the light receiving part of the laser positioning device through the measurement setting module, wherein the output of the light receiving part is 0 if the light source is received, the output of the light receiving part is 1 if the light source is not received, or the output of the light receiving part is 1 if the light source is received, and the output of the light receiving part is 0 if the light source is not received.
And 104, judging whether the switching-on or switching-off position of the rapid vacuum circuit breaker is in place or not according to the setting coding condition of the laser positioning device corresponding to the current switching-on or switching-off command, wherein if all the light receiving parts of the laser positioning device can not receive the light source, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be in place, and otherwise, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged not to be in place.
When the laser positioning device is operated, the light projecting part emits a light source, the light receiving part receives the light source, and then the measurement setting module carries out setting coding according to the condition of the light receiving source of the light receiving part. When the armature passes between the light projecting part and the light receiving part of the laser positioning device, the light receiving part can not receive light completely, and the output of the light receiving part of the laser positioning device is 1; if the light receiving section can receive the light source, the output is 0, or vice versa, that is, if the light receiving section cannot receive light at all, the output is 0, and if the light source can be received, the output is 1. If the breaker executes a closing operation, when any one of the light receiving parts of all the laser positioning devices at the bottom of the closing keeping permanent magnet receives the light source, the closing is determined not to be in place, and when the light receiving parts of all the laser positioning devices at the bottom of the closing keeping permanent magnet cannot receive the light source, namely the setting code of the measurement setting module is 111, the closing is determined to be in place. If the breaker executes the opening operation, when any light receiving part of the light receiving parts of all the laser positioning devices at the bottom of the opening maintaining permanent magnet receives the light source, the opening is judged not to be in place, and when the light receiving parts of all the laser positioning devices at the bottom of the opening maintaining permanent magnet do not receive the light source, namely the setting code of the measuring and setting module is 111, the opening is judged to be in place.
Taking the example that 3 laser positioning devices which are uniformly distributed at equal intervals are arranged at the bottom of the closing keeping permanent magnet and the top of the opening keeping permanent magnet, if the output of the light receiving parts of the three laser positioning devices is 1, the setting code of the measuring and setting module is 111, the armature is completely attracted by the closing keeping permanent magnet, and the closing is successful; if the light receiving parts of the three laser positioning devices have two outputs of 1, the measuring and setting modules are 110, 101 and 011, and the armature is not closed and kept attracted by the permanent magnet; if the output of one light receiving part of the three laser positioning devices is 1, setting codes of the measurement setting module are 100, 001 and 010, which indicates that the armature is not closed and kept to be attracted by the permanent magnet; if the output of the light receiving parts of the three laser positioning devices is 0, the setting code of the measuring and setting module is 000, and the armature is not closed and the permanent magnet is kept to be attracted. When a closing command is executed, the detection conditions of the corresponding laser positioning devices (1-3) are shown in table 1, and when a switching-off command is executed, the detection conditions of the corresponding laser positioning devices (4-6) are shown in table 2.
TABLE 1
TABLE 2
The invention provides a method for detecting the opening and closing positions of a current limiting device breaker, which is characterized in that a plurality of laser positioning devices are respectively arranged at intervals at the bottom of a closing keeping permanent magnet and the top of an opening keeping permanent magnet of a rapid vacuum breaker, when the breaker receives a closing or opening command, the laser positioning devices horizontally emit laser to the circle center of the closing keeping permanent magnet or the opening keeping permanent magnet, and an armature is completely attracted by the closing keeping permanent magnet or the opening keeping permanent magnet when normal closing or opening is in place, so that the laser emitted by the laser positioning devices is blocked. And (3) performing 01 setting coding according to the light source receiving condition of the light receiving part tested by all the laser positioning devices, so that whether switching-on or switching-off is in place can be determined according to the coding condition, if all the laser positioning devices can not receive light completely, the armature is attracted in place, the switching-on or switching-off is successful, otherwise, the switching-on or switching-off fails, the accurate positioning of the in-place condition of the switching-on and switching-off positions of the circuit breaker is realized, and the technical problem that the accurate positioning of the switching-on and switching-off positions of the circuit breaker is lacked currently, and the reliability of the operation of a power system is not improved is solved.
In one embodiment, the laser positioning device may be selected from a correlation type laser positioning device or a retro-reflection type laser positioning device or a diffuse reflection type laser positioning device. The principle of laser measurement in a reflective laser positioning device is shown in fig. 4, the principle of laser measurement in a retro-reflective laser positioning device is shown in fig. 5, and the principle of laser measurement in a diffuse-reflective laser positioning device is shown in fig. 6. Compared with a correlation laser positioning device and a regression reflection type laser positioning device, the diffusion reflection type measuring method is more suitable for positioning and detecting the opening and closing position of the circuit breaker, and the diffusion reflection type measuring method adopts a light receiving and projecting part integrated type, so that light rays can not return to the light receiving part normally. If the light emitted from the light projecting section hits the detection object, the light reflected from the detection object enters the light receiving section and the amount of received light increases. The measurement is more accurate, more does benefit to the installation adjustment, practices thrift the space. The measurement result accuracy pairs of the correlation type laser positioning apparatus, the regression reflection type laser positioning apparatus, and the diffusion reflection type laser positioning apparatus are shown in table 3.
TABLE 3
In one embodiment, after step 104 is executed, if it is determined that the closing or opening position of the fast vacuum circuit breaker is not in place, an audible and visual alarm is performed. The alarm response is immediately given once the breaker is not in place, and when the abnormal condition of the permanent magnet attraction armature is kept in the opening and closing state, the alarm opening signal is transmitted to the microcomputer protection device and the SCADE system through the area 1 network, so that the operation and inspection personnel can be timely reminded of defect processing.
In one embodiment, after step 104 is performed, the method further includes:
analyzing the fault reason of the situation that the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place according to the setting code, wherein the fault reason comprises the following steps: the armature jam, the auxiliary contact is not on, the travel switch fault, the screw looseness and the laser positioning device fault.
It should be noted that the corresponding relationship between the setting code of the measurement setting code module and the fault cause of the closing (opening) brake of the rapid vacuum circuit breaker is shown in table 4.
TABLE 4
According to the fault reason analysis of the table 4, a corresponding fault detection report can be automatically generated, and the opening and closing faults of the circuit breaker can be conveniently and quickly searched and maintained by maintenance personnel.
For easy understanding, please refer to fig. 7, an embodiment of a system for detecting a switching-on/off position of a circuit breaker of a current limiting device provided in the present invention includes a fast vacuum circuit breaker, a measurement setting module and a plurality of laser positioning devices;
the laser positioning device comprises a light projecting part and a light receiving part;
the laser positioning devices are arranged at the bottom of the switching-on maintaining permanent magnet and the top of the switching-off maintaining permanent magnet of the rapid vacuum circuit breaker at intervals;
after receiving a switching-on or switching-off command, the rapid vacuum circuit breaker executes switching-on or switching-off operation and triggers the laser positioning device;
the measurement setting module is used for carrying out setting coding on the light source receiving condition of the light receiving part of the laser positioning device, wherein the output of the light receiving part is 0 if the light source is received, the output of the light receiving part is 1 if the light source is not received, or the output of the light receiving part is 1 if the light source is received, and the output of the light receiving part is 0 if the light source is not received;
and the measurement setting module is also used for judging whether the switching-on or switching-off position of the rapid vacuum circuit breaker is in place or not according to the setting coding condition of the laser positioning device corresponding to the current switching-on or switching-off command, wherein if the light receiving parts of all the laser positioning devices can not receive the light source, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be in place, otherwise, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be not in place.
The laser positioning devices at the bottom of the switching-on maintaining permanent magnet and the top of the switching-off maintaining permanent magnet of the rapid vacuum circuit breaker are 3, and the 3 laser positioning devices are arranged at equal intervals.
The measurement setting module is further configured to:
analyzing the fault reason of the situation that the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place according to the setting code, wherein the fault reason comprises the following steps: the armature jam, the auxiliary contact is not on, the travel switch fault, the screw looseness and the laser positioning device fault.
The measurement setting module is further configured to:
and when the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place, performing acousto-optic alarm.
The laser positioning device is a correlation type laser positioning device, a regression reflection type laser positioning device or a diffusion reflection type laser positioning device. A diffuse reflection type laser positioning device is preferable.
The invention provides a detection system for the opening and closing positions of a current limiting device breaker, wherein a plurality of laser positioning devices are respectively arranged at intervals at the bottom of a closing keeping permanent magnet and the top of an opening keeping permanent magnet of a rapid vacuum breaker, when the breaker receives a closing or opening command, the laser positioning devices horizontally emit laser to the circle center of the closing keeping permanent magnet or the opening keeping permanent magnet, and an armature is completely attracted by the closing keeping permanent magnet or the opening keeping permanent magnet when the normal closing or opening is in place, so that the laser emitted by the laser positioning devices is blocked. According to the light source receiving condition of the light receiving part tested by all the laser positioning devices, 01 setting coding is carried out, so that whether switching-on or switching-off is in place or not can be determined according to the coding condition, if all the laser positioning devices can not receive light completely, the armature is attracted in place, the switching-on or switching-off is successful, otherwise, the switching-on or switching-off is failed, the accurate positioning of the in-place condition of the switching-on and switching-off position of the circuit breaker is realized, and the technical problem that the current method for accurately positioning the switching-on and switching-off position of the circuit breaker is lacked, and the reliability of the operation of a power system is not improved is solved.
The switching-on and switching-off position detection system of the circuit breaker of the current limiting device, provided by the invention, is used for executing the switching-on and switching-off position detection method of the circuit breaker of the current limiting device in the switching-on and switching-off position detection method embodiment of the circuit breaker of the current limiting device, the principle of the switching-on and switching-off position detection system is the same as that of the switching-on and switching-off position detection method of the circuit breaker of the current limiting device in the switching-on and switching-off position detection method embodiment of the circuit breaker of the current limiting device, the same technical effects can be obtained, and the details are not repeated herein.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for detecting the opening and closing positions of a circuit breaker of a current limiting device is characterized by comprising the following steps:
the method comprises the following steps that a measurement setting module and a plurality of laser positioning devices are respectively arranged at the bottom of a closing maintaining permanent magnet and the top of an opening maintaining permanent magnet of a rapid vacuum circuit breaker at intervals, and each laser positioning device comprises a light projecting part and a light receiving part;
when the rapid vacuum circuit breaker receives a switching-on or switching-off command, switching-on or switching-off operation is executed, and a laser positioning device is triggered;
carrying out setting coding on the light source receiving condition of the light receiving part of the laser positioning device through the measurement setting module, wherein the output of the light receiving part is 0 if the light source is received, the output of the light receiving part is 1 if the light source is not received, or the output of the light receiving part is 1 if the light source is received, and the output of the light receiving part is 0 if the light source is not received;
and judging whether the switching-on or switching-off position of the rapid vacuum circuit breaker is in place or not according to the setting coding condition of the laser positioning device corresponding to the current switching-on or switching-off command, wherein if all the light receiving parts of the laser positioning device can not receive the light source, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be in place, otherwise, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be not in place.
2. The method for detecting the opening and closing positions of the circuit breaker of the current limiting device according to claim 1, wherein a plurality of laser positioning devices at the bottom of the closing holding permanent magnet and at the top of the opening holding permanent magnet are distributed at equal intervals.
3. The method for detecting the opening and closing positions of the circuit breaker of the current limiting device according to claim 2, wherein the number of the laser positioning devices at the bottom of the closing holding permanent magnet and at the top of the opening holding permanent magnet is 3.
4. The method for detecting the opening and closing positions of the circuit breaker of the current limiting device according to claim 1, further comprising:
analyzing the fault reason of the situation that the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place according to the setting code, wherein the fault reason comprises the following steps: the armature jam, the auxiliary contact is not on, the travel switch fault, the screw looseness and the laser positioning device fault.
5. The method for detecting the opening and closing positions of the circuit breaker of the current limiting device according to claim 1, further comprising:
and when the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place, performing acousto-optic alarm.
6. The method for detecting the opening and closing position of the circuit breaker of the current limiting device according to claim 1, wherein the laser positioning device is a correlation type laser positioning device or a retro-reflection type laser positioning device or a diffusion reflection type laser positioning device.
7. The method for detecting the opening and closing positions of circuit breakers of current limiting devices according to claim 6, wherein the laser positioning device is a diffusion reflection type laser positioning device.
8. A detection system for the opening and closing positions of a circuit breaker of a current limiting device is characterized by comprising a rapid vacuum circuit breaker, a measurement and setting module and a plurality of laser positioning devices;
the laser positioning device comprises a light projecting part and a light receiving part;
the laser positioning devices are arranged at the bottom of the switching-on maintaining permanent magnet and the top of the switching-off maintaining permanent magnet of the rapid vacuum circuit breaker at intervals;
after receiving a switching-on or switching-off command, the rapid vacuum circuit breaker executes switching-on or switching-off operation and triggers the laser positioning device;
the measurement setting module is used for carrying out setting coding on the light source receiving condition of the light receiving part of the laser positioning device, wherein the output of the light receiving part is 0 if the light source is received, the output of the light receiving part is 1 if the light source is not received, or the output of the light receiving part is 1 if the light source is received, and the output of the light receiving part is 0 if the light source is not received;
and the measurement setting module is also used for judging whether the switching-on or switching-off position of the rapid vacuum circuit breaker is in place or not according to the setting coding condition of the laser positioning device corresponding to the current switching-on or switching-off command, wherein if the light receiving parts of all the laser positioning devices can not receive the light source, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be in place, otherwise, the switching-on or switching-off position of the rapid vacuum circuit breaker is judged to be not in place.
9. The current limiting device circuit breaker opening and closing position detection system of claim 8, wherein the number of the laser positioning devices at the bottom of the closing maintaining permanent magnet and at the top of the opening maintaining permanent magnet of the rapid vacuum circuit breaker is 3, and the 3 laser positioning devices are arranged at equal intervals.
10. The current limiting device circuit breaker opening and closing position detection system of claim 8, wherein the measurement setting module is further configured to:
analyzing the fault reason of the situation that the switching-on position or the switching-off position of the rapid vacuum circuit breaker is not in place according to the setting code, wherein the fault reason comprises the following steps: the armature jam, the auxiliary contact is not on, the travel switch fault, the screw looseness and the laser positioning device fault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210361500.2A CN114720867A (en) | 2022-04-07 | 2022-04-07 | Method and system for detecting opening and closing positions of circuit breaker of current limiting device |
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| CN202210361500.2A CN114720867A (en) | 2022-04-07 | 2022-04-07 | Method and system for detecting opening and closing positions of circuit breaker of current limiting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524780A (en) * | 2024-01-05 | 2024-02-06 | 宁波天安智能电网科技股份有限公司 | Self-induction magnetic force assisted quick-separating mechanism and high-voltage switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524780A (en) * | 2024-01-05 | 2024-02-06 | 宁波天安智能电网科技股份有限公司 | Self-induction magnetic force assisted quick-separating mechanism and high-voltage switch |
| CN117524780B (en) * | 2024-01-05 | 2024-03-15 | 宁波天安智能电网科技股份有限公司 | Self-induction magnetic force assisted quick-separating mechanism and high-voltage switch |
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