CN113096986A - Disconnecting and connecting position confirmation method and device for disconnecting switch - Google Patents
Disconnecting and connecting position confirmation method and device for disconnecting switch Download PDFInfo
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- CN113096986A CN113096986A CN202110512025.XA CN202110512025A CN113096986A CN 113096986 A CN113096986 A CN 113096986A CN 202110512025 A CN202110512025 A CN 202110512025A CN 113096986 A CN113096986 A CN 113096986A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012790 confirmation Methods 0.000 title claims description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 238000005516 engineering process Methods 0.000 claims description 15
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 3
- 238000003331 infrared imaging Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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Abstract
The invention provides a method for confirming the opening and closing positions of an isolating switch, relates to the technical field of isolating switches of transformer substations, and particularly relates to a method and equipment for confirming the opening and closing positions of the isolating switch, which comprises the following steps: the intelligent monitoring terminal receives a switching-on/off command, and sends the switching-on/off command to the video identification module and the microswitch; in a time period t, whether the opening and closing are in place is detected through the video identification module and the microswitch respectively, and a judgment result is output; the intelligent monitoring terminal outputs a double-identification state signal by combining the video identification module and the judgment result output by the microswitch. The problem of detection errors caused by inaccurate detection mode is avoided, and the effect of accurate detection is achieved, so that the technical defect that the detection of the opening and closing state of the traditional auxiliary contact is not accurate enough is solved.
Description
Technical Field
The invention relates to the technical field of disconnecting switches of transformer substations, in particular to a method and equipment for confirming the opening and closing positions of a disconnecting switch.
Background
The isolating switch is important electrical equipment in a transformer substation and plays an important role in safe operation of a power grid. The isolating switch is mostly installed outdoors, the operation condition is severe, the states of the operating mechanism and the transmission mechanism are greatly influenced by the environment, mechanical faults such as jamming, movement refusal and the like easily occur, and the switch contact is not in place to be switched on and off. Therefore, it is necessary to detect the opening/closing state of the switch contacts.
At present, the method for detecting the opening and closing states of the contacts of the disconnecting switch is mainly confirmed through an auxiliary contact. The method is simple to implement and is a commonly used detection means in the field, but the method is influenced by the quality of the auxiliary contact and the interlocking condition of the auxiliary contact and the isolating switch, and the method belongs to indirect detection, so that the detection accuracy is not high, and the method is not suitable to be used as a main detection method.
Disclosure of Invention
The current on-off state of the contact of the isolating switch is mainly confirmed through the auxiliary contact, but the method is influenced by the quality of the auxiliary contact and the interlocking condition of the auxiliary contact and the isolating switch, and the method belongs to indirect detection, so that the detection accuracy is not high, and the method is not suitable to be used as a main detection method. The following applications are proposed to address the above problems:
the method for confirming the opening and closing positions of the isolating switch comprises the following steps:
step S1, the intelligent monitoring terminal receives a switching-on/off command, and the intelligent monitoring terminal sends the switching-on/off command to the video identification module and the microswitch;
step S2, in a time period t, whether the opening and closing are in place is detected through the video identification module and the microswitch respectively, and a judgment result is output;
and step S3, the intelligent monitoring terminal combines the judgment results output by the video identification module and the microswitch to output a double-technology state signal.
Further, the step S2 specifically includes:
step S21, after receiving a switching-on/off command, the video identification module triggers a timer to time the switching-on/off of the isolating switch, and within a time period t, the video identification module identifies and judges a conducting picture of the isolating switch; the microswitch triggers a timer after receiving a switch-on/off command, times the switch-on/off of the isolating switch, and outputs a contact signal according to the position change of the isolating switch in a time period t;
step S22, the video identification module outputs the state of the disconnecting link; the micro switch outputs a contact signal;
and step S23, judging the signal states of the disconnecting link state and the contact signal, wherein the disconnecting link state and the contact signal comprise any one of the states of open position, closed position and abnormity.
Further, the step S3 specifically includes:
step S31, the intelligent monitoring terminal receives the switch signal and the contact signal output in the step S2 and judges the switch signal and the contact signal at the same time;
if the disconnecting link signal and the contact signal are in the open-position state, the output double-identification state signal is in the open-position state;
if the switch signal and the contact signal are both in an on state, the output dual-authentication state signal is in an on state;
and if the disconnecting link signal and the contact signal are both in abnormal states, the output double-technology state signal is abnormal.
Further, the step S2 further includes:
and in the time period t, whether the opening and closing of the switch is in place is judged by detecting the auxiliary switch contact of the isolating switch, and an auxiliary switch contact signal is output.
Further, the auxiliary switch contact signal comprises a separated state and a closed state.
Furthermore, the auxiliary switch contact signal is accessed into the intelligent monitoring terminal and is output as a judgment basis of the double-technology state signal.
Furthermore, the intelligent monitoring terminal is an integrated machine.
Further, the present application provides an apparatus comprising:
the intelligent monitoring terminal is used for processing opening and closing command data and outputting a dual-authentication state signal;
the video identification module is used for collecting the opening or closing of the isolating switch by adopting an image collection technology and judging the opening and closing state of the isolating switch;
and the microswitch outputs a contact signal.
Furthermore, the video identification module comprises a video sensor, and the video sensor adopts an infrared imaging camera.
Further, the micro switch rotates to the opening and closing position by using the insulator or the connecting rod, touches the micro switch and triggers a contact signal.
According to the method for confirming the opening and closing positions of the isolating switch, after the opening and closing command of the isolating switch is issued, whether the opening and closing is in place or not is detected by combining the video identification module and the micro switch, and the judgment result is output, the intelligent monitoring terminal outputs a double-identification state signal by combining the judgment results output by the video identification module and the micro switch, so that double-identification detection is realized, the problem of detection errors caused by inaccurate detection mode of one of the detection modes can be avoided, the accurate detection effect is achieved, and the technical defect that the traditional auxiliary contact is not accurate enough in the detection of the opening and closing states is overcome.
Drawings
FIG. 1 is a schematic flow chart of a method for confirming the opening and closing positions of an isolating switch in the embodiment of the invention;
FIG. 2 is another schematic flow chart of a method for confirming the opening and closing positions of the disconnecting switch according to the embodiment of the invention;
fig. 3 is a schematic structural diagram of a disconnecting switch opening and closing position confirmation device in the embodiment of the invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Example one
The embodiment of the application provides a method for confirming the opening and closing positions of an isolating switch, which comprises the following steps as shown in figure 1:
101. receiving a switching-on and switching-off command;
the opening and closing command is used for outputting a signal through remote control, the opening and closing command enables the opening and closing command to take effect through background operation of a disconnecting switch, the intelligent monitoring terminal is connected to the intelligent monitoring terminal through a control circuit, and after the intelligent monitoring terminal receives the opening and closing command, the intelligent monitoring terminal sends the opening and closing command to the video identification module and the microswitch;
102. detecting the on-off in-place state through a video identification module and a microswitch;
after the intelligent monitoring terminal receives the switching-on and switching-off command, triggering a timer, calculating the time for starting to receive the switching-on and switching-off command by the timer, detecting whether the switching-on and switching-off is in place or not by the video identification module and the microswitch within a time period t, and outputting a judgment result;
103. the intelligent monitoring terminal outputs a double-authentication state signal;
the intelligent monitoring terminal outputs a double-identification state signal by combining the video identification module and the judgment result output by the microswitch.
Further, in a preferred embodiment of the present application, as shown in fig. 2, the step 102 specifically further includes:
the video identification module triggers a timer after receiving a switching-on and switching-off command, times the switching-on and switching-off of the isolating switch, and identifies and judges a conducting picture of the isolating switch within a time period t; the microswitch triggers a timer after receiving a switch-on/off command, times the switch-on/off of the isolating switch, and outputs a contact signal according to the position change of the isolating switch in a time period t;
the video identification module outputs the state of the disconnecting link; the micro switch outputs a contact signal;
if the disconnecting link signal and the contact signal are in the open-position state, the output double-identification state signal is in the open-position state;
if the switch signal and the contact signal are both in an on state, the output dual-authentication state signal is in an on state;
if the switch signal and the contact signal are both in an abnormal state, the output dual-technology state signal is abnormal;
the switch signal and the contact signal are combined in pairs, for example, if the switch signal is in an open state and the contact signal is in a closed state, the output dual-technology state signal is abnormal;
if the switch signal is in the on state and the contact signal is in the off state, the output dual-authentication state signal is abnormal;
if the switch signal is in an abnormal state and the contact signal is in a closed state or an open state, the output dual-technology state signal is abnormal;
other two-two combination states are easily conceivable by those skilled in the art, and are not described herein.
Judging the state of the disconnecting link and the signal state of the contact signal;
the switch state and the contact signal comprise any one of a separating state, a closing state and an abnormal state.
Further, in a preferred embodiment of the present application, as shown in fig. 2, the 103 specifically further includes:
the intelligent monitoring terminal receives the switch signal and the contact signal output in the step S2, and judges the switch signal and the contact signal at the same time;
if the disconnecting link signal and the contact signal are in the open-position state, the output double-identification state signal is in the open-position state;
if the switch signal and the contact signal are both in an on state, the output dual-authentication state signal is in an on state;
and if the disconnecting link signal and the contact signal are both in abnormal states, the output double-technology state signal is abnormal.
Further, in a preferred embodiment of the present application, the method 102 specifically further includes:
and in the time period t, whether the opening and closing of the switch is in place is judged by detecting the auxiliary switch contact of the isolating switch, and an auxiliary switch contact signal is output.
Further, in a preferred embodiment of the present application, the auxiliary switch contact signal includes a off state and an on state.
Further, in a preferred embodiment of the present application, the auxiliary switch contact signal is connected to the intelligent monitoring terminal, and is output as a judgment basis of the dual technology state signal.
Further, in a preferred embodiment of the present application, the intelligent monitoring terminal is an all-in-one machine.
Disconnecting switch on-off position confirmation equipment is shown in fig. 3 and comprises:
the intelligent monitoring terminal 304 is used for processing switching-on and switching-off command data and outputting a dual-technology state signal;
the video identification module 302 is used for collecting the opening or closing of the isolating switch by adopting an image collection technology and judging the opening and closing state of the isolating switch;
the microswitch 303 outputs a contact signal.
As shown in fig. 3, the switching-on/off command 301 is issued by a wireless remote control or a wired remote control, the intelligent monitoring terminal 304 receives the switching-on/off command 301, and sends the switching-on/off command 301 to the video identification module 302 and the micro switch 303, and the specific steps of this embodiment are similar to steps 101 to 103 in the embodiment, and are not described herein again.
Further, in a preferred embodiment of the present application, the video recognition module includes a video sensor, and the video sensor employs an infrared imaging camera.
Further, in a preferred embodiment of the present application, the micro switch is rotated to an open/close position by using an insulator or a connecting rod, and the micro switch is touched to trigger a contact signal.
In the description of the present invention, it is to be understood that the terms "intermediate", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature may be "on" the second feature in direct contact with the second feature, or the first and second features may be in indirect contact via an intermediate. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (10)
1. The method for confirming the opening and closing positions of the isolating switch is characterized by comprising the following steps of:
step S1, the intelligent monitoring terminal receives a switching-on/off command, and the intelligent monitoring terminal sends the switching-on/off command to the video identification module and the microswitch;
step S2, in a time period t, whether the opening and closing are in place is detected through the video identification module and the microswitch respectively, and a judgment result is output;
and step S3, the intelligent monitoring terminal combines the judgment results output by the video identification module and the microswitch to output a double-technology state signal.
2. The disconnecting switch switching-on/off position confirmation method according to claim 1, wherein the step S2 specifically includes:
step S21, after receiving a switching-on/off command, the video identification module triggers a timer to time the switching-on/off of the isolating switch, and within a time period t, the video identification module identifies and judges a conducting picture of the isolating switch; the microswitch triggers a timer after receiving a switch-on/off command, times the switch-on/off of the isolating switch, and outputs a contact signal according to the position change of the isolating switch in a time period t;
step S22, the video identification module outputs the state of the disconnecting link; the micro switch outputs a contact signal;
and step S23, judging the signal states of the disconnecting link state and the contact signal, wherein the disconnecting link state and the contact signal comprise any one of the states of open position, closed position and abnormity.
3. The disconnecting switch switching-on/off position confirmation method according to claim 1, wherein the step S3 specifically includes:
step S31, the intelligent monitoring terminal receives the switch signal and the contact signal output in the step S2 and judges the switch signal and the contact signal at the same time;
if the disconnecting link signal and the contact signal are in the open-position state, the output double-identification state signal is in the open-position state;
if the switch signal and the contact signal are both in an on state, the output dual-authentication state signal is in an on state;
and if the disconnecting link signal and the contact signal are both in abnormal states, the output double-technology state signal is abnormal.
4. The disconnecting switch switching-on and switching-off position confirmation method according to claim 1, wherein the step S2 further includes:
and in the time period t, whether the opening and closing of the switch is in place is judged by detecting the auxiliary switch contact of the isolating switch, and an auxiliary switch contact signal is output.
5. The disconnecting switch opening and closing position confirmation method according to claim 4, wherein the auxiliary switch contact signal comprises an open state and a closed state.
6. The disconnecting switch opening and closing position confirmation method according to claim 4, wherein the auxiliary switch contact signal is connected to the intelligent monitoring terminal and is output as a judgment basis of a double-technology state signal.
7. The disconnecting switch on-off position confirmation method according to any one of claims 1 to 3, wherein the intelligent monitoring terminal is an all-in-one machine.
8. Disconnecting switch closing and closing position confirmation device, configured to perform the disconnecting switch closing and closing position confirmation method according to any one of claims 1 to 6, comprising:
the intelligent monitoring terminal is used for processing opening and closing command data and outputting a dual-authentication state signal;
the video identification module is used for collecting the opening or closing of the isolating switch by adopting an image collection technology and judging the opening and closing state of the isolating switch;
and the microswitch outputs a contact signal.
9. The disconnecting switch switching-on and switching-off position confirmation device according to claim 8, wherein the video recognition module comprises a video sensor, and the video sensor adopts an infrared imaging camera.
10. An isolating switch closing and opening position confirming device according to claim 8, wherein the micro switch is rotated to a closing and opening position by an insulator or a link to touch the micro switch, triggering a touch signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512025.XA CN113096986A (en) | 2021-05-11 | 2021-05-11 | Disconnecting and connecting position confirmation method and device for disconnecting switch |
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| CN202110512025.XA CN113096986A (en) | 2021-05-11 | 2021-05-11 | Disconnecting and connecting position confirmation method and device for disconnecting switch |
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Cited By (5)
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| CN113641122A (en) * | 2021-08-06 | 2021-11-12 | 广西电网有限责任公司电力科学研究院 | Interlocking logic visualization method and device for intelligent high-voltage switch |
| 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 |
| CN113936950A (en) * | 2021-10-28 | 2022-01-14 | 广东电网有限责任公司 | Method, device and system for determining state of three-station mechanism |
| CN114167279A (en) * | 2022-02-14 | 2022-03-11 | 广东电网有限责任公司佛山供电局 | Transformer substation circuit breaker and disconnecting switch displacement judging method and device |
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| CN114167279A (en) * | 2022-02-14 | 2022-03-11 | 广东电网有限责任公司佛山供电局 | Transformer substation circuit breaker and disconnecting switch displacement judging method and device |
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