CN112683329A - Method and system for monitoring isolating switch - Google Patents
Method and system for monitoring isolating switch Download PDFInfo
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- CN112683329A CN112683329A CN202011461581.0A CN202011461581A CN112683329A CN 112683329 A CN112683329 A CN 112683329A CN 202011461581 A CN202011461581 A CN 202011461581A CN 112683329 A CN112683329 A CN 112683329A
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Abstract
The disclosure provides a method and a system for monitoring an isolating switch, relates to the technical field of electrical equipment, and can solve the problem that in the prior art, the monitoring is inaccurate because the state of the isolating switch is determined only by the opening and closing state of an auxiliary node. The specific technical scheme is as follows: the method comprises the following steps: acquiring an operation signal of opening or closing of the isolating switch; acquiring an identification result of the reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal; and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device. The invention is used for monitoring the state of the isolating switch.
Description
Technical Field
The disclosure relates to the technical field of electrical equipment, in particular to a method and a system for monitoring an isolating switch.
Background
The existing open-type disconnecting switch of a 35kV or above transformer substation obtains the state of a switch position through an auxiliary contact in a mechanism box, because the auxiliary contact is in the mechanism box, and after the disconnecting switch is operated for a long time and operated, intermediate parts such as a transmission shaft and a conductive arm can be mechanically loosened and changed to different degrees, so that the position states of the conductive arm and a moving contact of the disconnecting switch can not be completely reflected by monitoring the opening and closing state of the auxiliary contact, and the problem of inaccurate monitoring exists.
Disclosure of Invention
The embodiment of the disclosure provides a method and a system for monitoring an isolating switch, which can solve the problem of inaccurate monitoring in the prior art that the state of the isolating switch is determined only by the opening and closing state of an auxiliary node. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a method for monitoring a disconnector, the method including: acquiring an operation signal of opening or closing of the isolating switch; acquiring an identification result of a reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal; and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
In one embodiment, the reference recognition device is an auxiliary switch, and the auxiliary recognition device includes: a microswitch and a camera sensor;
the determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device includes:
and determining the current state of the isolating switch according to the current position of the microswitch, the current position of the microswitch and/or the identification result of the camera sensor.
In one embodiment, the method further comprises: and acquiring the current of the motor of the isolating switch, and generating first prompt information when the current of the motor is greater than a first preset threshold value.
In one embodiment, the method further comprises: and acquiring the torque of the motor of the isolating switch, and generating second prompt information when the torque of the motor is greater than a second preset threshold value.
In one embodiment, the method further comprises: acquiring the ambient temperature and the ambient humidity of a mechanism box of the isolating switch; when the ambient temperature of the mechanism box is greater than a third preset threshold value, generating third prompt information; and when the environmental humidity of the mechanism box is greater than a fourth preset threshold value, generating fourth prompt information.
According to the isolating switch monitoring method, on the basis that the state of the isolating switch is determined according to the opening and closing state of the auxiliary node, auxiliary criteria of a micro switch and intelligent video identification are added, and the current state of the isolating switch can be identified and judged more accurately. Meanwhile, the mechanical characteristics and the electrical characteristics of the motor are comprehensively analyzed by acquiring the torque of the motor in real time, so that the working health state of the motor is evaluated, abnormal conditions are notified in real time so that maintainers can timely deal with the abnormal conditions, and further, the environment temperature and humidity of a mechanism box are acquired in real time, and an environment improving device can be automatically linked when the abnormal conditions exist; meanwhile, the historical environment change is comprehensively evaluated by combining with meteorological information, and early warning can be given in advance when abnormality exists.
According to a second aspect of embodiments of the present disclosure, there is provided a disconnector monitoring system, the system comprising: the device comprises a reference identification device, an auxiliary identification device, a detection device and a disconnecting switch monitoring device;
wherein, the benchmark recognition device is an auxiliary switch, and the auxiliary recognition device includes: a microswitch and a camera sensor;
the detection device includes: the device comprises a Hall sensor, a torque sensor and a temperature and humidity sensor;
the isolating switch monitoring device is used for: acquiring an operation signal of opening or closing of the isolating switch; acquiring an identification result of a reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal; and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
In one embodiment, the isolator monitoring device is further configured to: and determining the current state of the isolating switch according to the current position of the microswitch, the current position of the microswitch and/or the identification result of the camera sensor.
In one embodiment, the isolator monitoring device is further configured to: and acquiring the current of the motor of the isolating switch, which is detected by the Hall sensor, and generating first prompt information when the current of the motor is greater than a first preset threshold value.
In one embodiment, the isolator monitoring device is further configured to: and acquiring the torque of the motor of the isolating switch detected by the torque sensor, and generating second prompt information when the torque of the motor is greater than a second preset threshold value.
In one embodiment, the isolator monitoring device is further configured to: the temperature and humidity sensor is used for detecting the ambient temperature and the ambient humidity of the mechanism box of the isolating switch, when the ambient temperature of the mechanism box is larger than a third preset threshold value, third prompt information is generated, and when the ambient humidity of the mechanism box is larger than a fourth preset threshold value, fourth prompt information is generated.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart of a method for monitoring a disconnector according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a monitoring method for a disconnector according to an embodiment of the present disclosure;
fig. 3 is a block diagram of a monitoring system for a disconnector according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a disconnector monitoring device provided in an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of systems and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The embodiment of the disclosure provides a method for monitoring a disconnecting switch, as shown in fig. 1, the method includes the following steps:
101. and acquiring an operation signal of opening or closing the isolating switch.
The step of acquiring the operation signal of the disconnecting switch for opening or closing comprises acquiring a remotely transmitted operation signal.
102. Acquiring an identification result of the reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal;
wherein, benchmark recognition device is auxiliary switch, and auxiliary recognition device includes: the automatic isolating switch comprises a microswitch and a camera sensor, wherein the microswitch can be arranged outside a mechanism box and used for assisting in judging the current state of the isolating switch.
103. And determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
Specifically, the current state of the disconnector is determined based on the current position of the microswitch, which may be installed outside the mechanism box, the current position of the microswitch, and/or the recognition result of the camera sensor.
In practical application, as shown in fig. 2, when the auxiliary switch is in the position division and the micro switch and/or the video identification are/is also in the position division, the current state of the output isolating switch is in the position division; when the auxiliary switch is in the closed position, and the micro switch and/or the video identification are/is also in the closed position, the current state of the output isolating switch is in the closed position, and when the identification result of the auxiliary switch and the micro switch and/or the video identification is inconsistent, an abnormal signal is input.
In one embodiment, the method further comprises: the method comprises the steps of obtaining the current of a motor of an isolating switch, and generating first prompt information when the current of the motor is larger than a first preset threshold value. The prompt information can be displayed through display devices such as an indicator light and a display screen, or the prompt information can prompt a worker in an alarm mode.
In one embodiment, the method further comprises: and acquiring the torque of the motor of the isolating switch, and generating second prompt information when the torque of the motor is greater than a second preset threshold value.
In one embodiment, the method further comprises: acquiring the ambient temperature and the ambient humidity of a mechanism box of an isolating switch; when the environmental temperature of the mechanism box is greater than a third preset threshold value, generating third prompt information; and when the environmental humidity of the mechanism box is greater than a fourth preset threshold value, generating fourth prompt information.
According to the isolating switch monitoring method, on the basis that the state of the isolating switch is determined according to the opening and closing state of the auxiliary node, auxiliary criteria of a micro switch and intelligent video identification are added, and the current state of the isolating switch can be identified and judged more accurately. Meanwhile, the mechanical characteristics and the electrical characteristics of the motor are comprehensively analyzed by acquiring the torque of the motor in real time, so that the working health state of the motor is evaluated, abnormal conditions are notified in real time so that maintainers can timely deal with the abnormal conditions, and further, the environment temperature and humidity of a mechanism box are acquired in real time, and an environment improving device can be automatically linked when the abnormal conditions exist; meanwhile, the historical environment change is comprehensively evaluated by combining with meteorological information, and early warning can be given in advance when abnormality exists.
The embodiment of the present disclosure further provides a monitoring system for a disconnecting switch, as shown in fig. 3, the system 3 includes: a reference recognition device 31, an auxiliary recognition device 32, a detection device 33, an environmental improvement device 34, and a disconnector monitoring device 35;
wherein, the reference recognition device is an auxiliary switch 311, and the auxiliary recognition device includes: a microswitch 321 and a camera sensor 322; the detection device comprises: a hall sensor 331, a torque sensor 332, and a temperature and humidity sensor 333; the disconnecting switch monitoring device is used for a disconnecting switch monitoring method in an embodiment based on the figure. In addition, when the environment humiture of gathering the mechanism case is too big, can improve the environment of mechanism incasement by automatic linkage environment improvement device 34.
The isolating switch monitoring device is used for: acquiring an operation signal of opening or closing of the isolating switch; acquiring an identification result of a reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal; and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
Specifically, isolator monitoring devices are used for: acquiring an operation signal of opening or closing of the isolating switch; acquiring an identification result of the reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal; and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
In one embodiment, the isolator monitoring device is further configured to: and determining the current state of the isolating switch according to the current position of the microswitch, the current position of the microswitch and/or the identification result of the camera sensor.
In one embodiment the isolator monitoring device is further adapted to: the method comprises the steps of obtaining the current of a motor of an isolating switch detected by a Hall sensor, and generating first prompt information when the current of the motor is larger than a first preset threshold value.
In one embodiment, the isolator monitoring device is further configured to: and acquiring the torque of the motor of the isolating switch detected by the torque sensor, and generating second prompt information when the torque of the motor is greater than a second preset threshold value.
In one embodiment, the isolator monitoring device is further configured to: the method comprises the steps of obtaining the ambient temperature and the ambient humidity of a mechanism box of an isolating switch detected by a temperature and humidity sensor, generating third prompt information when the ambient temperature of the mechanism box is larger than a third preset threshold value, and generating fourth prompt information when the ambient humidity of the mechanism box is larger than a fourth preset threshold value.
In practical application, as shown in fig. 4, the disconnecting switch monitoring device 35 specifically includes: the protection power supply board 351, the CPU board 352, the analog acquisition board 353, the digital input/output board 354 and the video acquisition processing board 355 are connected by a backplane bus.
The protection power panel not only provides working power supply for the device, but also provides working power supply for a plurality of sensors and video sensors.
The CPU board is a core processing board card of the whole device, a main processing chip of the CPU board not only processes collected monitoring data and environment related data, but also interacts an operation processing result with a station control layer, a communication interface of the CPU board uses an RS485 interface for downward collection, is connected with a temperature and humidity sensor and related equipment for environment improvement and the like, is connected with the upper station control layer and the station control layer by Ethernet interfaces, and realizes data interaction with the station control layer by adopting a communication mode.
The simulation acquisition board is mainly connected with the data of acquiring the current sensor and the torque sensor of the motor, and transmits the acquired real-time measurement data to the CPU board through a back board bus, and the analog quantity monitoring is mainly divided into two parts: (a) the method comprises the steps of collecting motor current by using a Hall sensor, monitoring and recording real-time data of the motor current in the process when an isolating switch starts to operate, analyzing the running state of the motor current in real time, reporting an alarm when an abnormity occurs, stopping the motor to work in time if the abnormity occurs, (b) collecting torque of a motor by using a torque sensor, monitoring and recording the torque of a transmission main shaft in the process when the isolating switch starts to operate, analyzing the running state of the motor torque in real time, reporting an alarm when the abnormity occurs, and stopping the motor to work in time if the abnormity occurs.
The digital input and output board collects switching value input and carries out related switching value control, the input mainly comprises the collection of a remote control command, an auxiliary switch position and a microswitch position, the collected result is informed to the main CPU board through a backboard bus in real time, simultaneously, an output main contact of the device controls the slave CPU board to issue a command and informs the digital input and output board through the backboard bus, and the control command mainly comprises a double-point switching position, a switching-off command, a switching-on command, a stopping command and a remote/local command.
The video acquisition processing board is mainly connected with a camera sensor, each phase of the isolating switch acquires a real-time video picture by using one camera sensor and transmits video stream information to the video acquisition processing board, and the video acquisition processing board analyzes real-time images of the video stream information, judges the current position of the isolating switch and transmits the judged result to the main CPU board through a backboard bus.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A method of monitoring a disconnector, the method comprising:
acquiring an operation signal of opening or closing of the isolating switch;
acquiring an identification result of a reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal;
and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
2. The method of claim 1, wherein the reference recognition device is an auxiliary switch, the auxiliary recognition device comprising: a microswitch and a camera sensor;
the determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device includes:
and determining the current state of the isolating switch according to the current position of the microswitch, the current position of the microswitch and/or the identification result of the camera sensor.
3. The method of claim 1, further comprising:
and acquiring the current of the motor of the isolating switch, and generating first prompt information when the current of the motor is greater than a first preset threshold value.
4. The method according to claim 1 or 3, characterized in that the method further comprises:
and acquiring the torque of the motor of the isolating switch, and generating second prompt information when the torque of the motor is greater than a second preset threshold value.
5. The method of claim 1, further comprising:
acquiring the ambient temperature and the ambient humidity of a mechanism box of the isolating switch;
when the ambient temperature of the mechanism box is greater than a third preset threshold value, generating third prompt information;
and when the environmental humidity of the mechanism box is greater than a fourth preset threshold value, generating fourth prompt information.
6. A disconnector monitoring system, characterized in that the system comprises: the device comprises a reference identification device, an auxiliary identification device, a detection device and a disconnecting switch monitoring device;
wherein, the benchmark recognition device is an auxiliary switch, and the auxiliary recognition device includes: a microswitch and a camera sensor;
the detection device includes: the device comprises a Hall sensor, a torque sensor and a temperature and humidity sensor;
the isolating switch monitoring device is used for: acquiring an operation signal of opening or closing of the isolating switch; acquiring an identification result of a reference identification device and an identification result of at least one auxiliary identification device within preset time according to the operation signal; and determining the current state of the isolating switch according to the recognition result of the reference recognition device and the recognition result of the at least one auxiliary recognition device.
7. The system of claim 6, wherein the isolator monitoring device is further configured to: and determining the current state of the isolating switch according to the current position of the microswitch, the current position of the microswitch and/or the identification result of the camera sensor.
8. The system of claim 6, wherein the isolator monitoring device is further configured to: and acquiring the current of the motor of the isolating switch, which is detected by the Hall sensor, and generating first prompt information when the current of the motor is greater than a first preset threshold value.
9. The system of claim 6 or 8, wherein the isolator monitoring device is further configured to: and acquiring the torque of the motor of the isolating switch detected by the torque sensor, and generating second prompt information when the torque of the motor is greater than a second preset threshold value.
10. The system of claim 6, wherein the isolator monitoring device is further configured to: the temperature and humidity sensor is used for detecting the ambient temperature and the ambient humidity of the mechanism box of the isolating switch, when the ambient temperature of the mechanism box is larger than a third preset threshold value, third prompt information is generated, and when the ambient humidity of the mechanism box is larger than a fourth preset threshold value, fourth prompt information is generated.
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| CN202011461581.0A CN112683329A (en) | 2020-12-08 | 2020-12-08 | Method and system for monitoring isolating switch |
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| CN202011461581.0A CN112683329A (en) | 2020-12-08 | 2020-12-08 | Method and system for monitoring isolating switch |
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| CN113741242A (en) * | 2021-08-02 | 2021-12-03 | 南方电网科学研究院有限责任公司 | Control method, device and system of isolating switch |
| CN114019361A (en) * | 2021-10-28 | 2022-02-08 | 广东电网有限责任公司 | Method and device for determining state of three-phase box-separated switch |
| CN114428209A (en) * | 2022-04-06 | 2022-05-03 | 广东电网有限责任公司云浮供电局 | Isolator monitoring devices |
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Application publication date: 20210420 |