CN110942937A - Disconnecting link state non-homologous determination system and method - Google Patents
Disconnecting link state non-homologous determination system and method Download PDFInfo
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- CN110942937A CN110942937A CN201911069677.XA CN201911069677A CN110942937A CN 110942937 A CN110942937 A CN 110942937A CN 201911069677 A CN201911069677 A CN 201911069677A CN 110942937 A CN110942937 A CN 110942937A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000002955 isolation Methods 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 235000014676 Phragmites communis Nutrition 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 8
- 244000273256 Phragmites communis Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 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
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/02—Details
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to a system and a method for determining non-homologous sources of a disconnecting link state, which comprises an isolation disconnecting link, a contact determination source, a non-contact determination source, a central processing unit and an output unit, wherein the contact determination source and the non-contact determination source are respectively in wireless connection with the central processing unit, the central processing unit receives detection information of the two determination sources and determines the state of the disconnecting link, and the determined state of the disconnecting link is output through the output unit, the output unit is a display and/or an audio player, and the state of the disconnecting link is determined through the contact determination source and the non-contact determination source, so that the problem of poor instantaneity of the disconnecting link state determined by operation and maintenance personnel is solved, the remote determination of the state of the disconnecting link, the contact determination mode and the non-contact mode are realized as the determination information sources of the two different sources, the accuracy of the determination results is ensured, and the results of the two determination, and realizing self-checking.
Description
Technical Field
The invention relates to the field of power grid operation and maintenance, in particular to a disconnecting link state non-homologous determination system and method.
Background
The isolation disconnecting link is widely applied to a power grid as a reliable disconnecting mode, the state of the disconnecting link needs to be determined during maintenance and repair and other operations to ensure the safety of the operations, the confirmation of the state of the disconnecting link is generally confirmed on site by operation and maintenance personnel at present, the real-time performance of the confirmation mode is not high, and the transportation time of the operation and maintenance is also spent.
Disclosure of Invention
In order to solve the above problems, a system for determining a non-homologous switch state is provided, which includes an isolation switch, a contact determination source, a non-contact determination source, a central processing unit and an output unit, wherein the contact determination source and the non-contact determination source are wirelessly connected to the central processing unit, the central processing unit receives detection information of the two determination sources and determines a switch state, and the output unit outputs the determined switch state, and is a display and/or an audio player.
A method for determining non-homologous sources of switch states comprises the following steps:
A. the state of the disconnecting link is detected respectively through two determination sources of contact and non-contact, and detection information of the two determination sources is transmitted to a central processing unit in a wireless connection mode;
B. the central processing unit respectively determines the states of the disconnecting links determined by the two determination sources and outputs the determination results;
C. and the central processing unit compares the knife switch states determined by the two determination sources, takes the consistent result determined by the two determination sources as the finally determined knife switch state, and outputs the finally determined knife switch state.
The method has the advantages that the disconnecting link state is determined through the contact determining source and the non-contact determining source, the problem that operation and maintenance personnel are poor in instantaneity of confirming the disconnecting link state is solved, the remote disconnecting link state, contact determining mode and non-contact determining mode are achieved, the disconnecting link state, contact determining mode and non-contact determining mode are used as determining information sources of two different sources, accuracy of determining results is guaranteed, results of the two determining modes can be compared, and self-checking is achieved.
Drawings
The invention is further illustrated by the attached drawings, the examples of which are not to be construed as limiting the invention in any way.
FIG. 1 is a logical block diagram of an application of one embodiment of the present invention to a system;
FIG. 2 is a schematic diagram of the overall structure of the system in one embodiment of the present invention;
FIG. 3 is a schematic diagram of the position relationship and mechanism of each component when fully closing in an embodiment of the present invention;
fig. 4 is a schematic view of the position relationship and structure of each component when the moving contact just separates from the fixed contact in an embodiment of the present invention;
fig. 5 is a schematic diagram of the position relationship and structure of each component when the moving contact completes its stroke in one embodiment of the present invention;
1-isolating a disconnecting link rotating arm; 2-isolating the disconnecting link support; 3-a magnet; 4-reed pipe; 5-moving contact; 6, static contact; 7-background plate; 71-labeling; 8-a baffle plate; 9-high definition camera.
Detailed Description
The following is a detailed illustration of the inventive concept in connection with the examples, and should not be taken to limit the scope of the invention, but rather as an aid to understanding the principles.
Example (b): as shown in fig. 1-5
A non-homologous knife switch state determining system comprises an isolation knife switch, a contact determining source, a non-contact determining source, a central processing unit and an output unit, wherein the contact determining source and the non-contact determining source are respectively in wireless connection with the central processing unit, the central processing unit receives detection information of the two determining sources and determines the state of the knife switch, the determined state of the knife switch is output through the output unit, and the output unit is a display and/or an audio player.
Preferably, the contact determination source comprises a magnet 3 arranged on the isolating switch rotating arm 1, a reed switch 4 arranged on the isolating switch support 2, the magnet 3 is used for triggering the reed switch 4, and the contact determination source further comprises a wireless transmitting module, and the reed switch 4 is arranged on a circuit of the wireless transmitting module connected with a power supply.
The contact determination source is matched with the action process of the disconnecting link, the disconnecting link is opened and closed by an isolation disconnecting link rotating arm 1 driving a moving contact 5 to be inserted into or separated from a static contact 6, a magnet 3 arranged on the isolation disconnecting link rotating arm 1 moves along with the isolation disconnecting link rotating arm, a reed pipe 4 is triggered by the magnet 3, further the conduction relation between a wireless transmitting module and a power supply is controlled, a wireless signal is transmitted or interrupted to transmit to a central processing unit, the wireless signal can be any signal, the signal transmitted by the wireless transmitting module is only required to be input into the central processing unit in advance, the central processing unit can identify the signal, the central processing unit judges the state of the disconnecting link according to whether the signal is received, the judging logic is simple for the whole device, the requirement on equipment is low, and the equipment cost can be saved to a certain degree.
Preferably, the magnet 3 is in the position range of triggering the reed switch 4 just when the driven contact 5 is separated from the fixed contact 6 to the movable contact 5 completes the stroke.
The reed pipe 4 is a commonly used element of a control circuit, the magnetic field provided by the magnet 3 magnetizes two reeds in the reed pipe 4, when the magnetic force exceeds the elastic force of the reeds, the two reeds attract and conduct the circuit, when the magnetic field is weakened, the reeds are released due to the elasticity of the reeds, and therefore the circuit is opened, for the reed pipe 4, the magnet 3 can be triggered within a certain range, at the moment, the triggering range can be determined through tests, the relative position of the reed pipe 4 and the magnet 3 is determined, and the triggering stability is ensured.
Preferably, the reed switch 4 is a normally open reed switch.
The normally open type dry reed pipe is adopted here, that is to say that the circuit that wireless transmitting module is located can only be switched on when keeping apart the switch and separating, and as common knowledge, we can understand that, keep apart the switch more be in the state of closing a floodgate, adopt normally open type dry reed pipe, the circuit just switches on when separating only, can practice thrift a large amount of power consumptions, if adopt normally closed type dry reed pipe, the circuit is in the conducting state for a long time so.
Preferably, the non-contact determination source comprises a high-definition camera 9, a background plate 7 and a baffle plate 8 arranged on a rotating arm of an isolation knife switch, the isolation knife switch is positioned between the high-definition camera 9 and the background plate 7, the high-definition camera 9 is aligned with the background plate 7, and a mark 71 identified by color and/or shape is arranged on the background plate 7.
The non-contact determination source is realized by acquiring images for comparison, the baffle 8 moves along with the isolating disconnecting link rotating arm 1, the images of the marks 71 on the background plate 7 acquired by the high-definition camera 9 are changed in the moving process, different images of the marks 71 correspond to different states of the disconnecting link, a central processing unit can learn the relation between the marked images and the states of the disconnecting link in a machine depth learning mode in advance, the central processing unit has judgment capability, then the central processing unit judges the states of the disconnecting link according to the image information of the marks 71 acquired by the high-definition camera 9 in real time, the marks 71 are arranged to simplify the contents of the machine depth learning, the shapes and/or colors of the marks 71 are controllable conditions, if the images of the disconnecting link are directly learned through the machine depth learning and then judged, the problem to be faced in the case is the special-shaped structure of the disconnecting link, and the situation that the judgment is not easy to distinguish from the environment and the like causes errors, and the mode of arranging the mark 71 on the background plate 7 can highlight the specific characteristic which is easy to identify, so that the reliability of the judgment result is greatly improved.
Preferably, the baffle 8 rotates along with the isolation switch rotating arm 1, and when the isolation switch is completely switched on, the baffle 8 completely shields the mark 71 and is not shot by the high-definition camera 9; in the process that the driven contact 5 just separates from the fixed contact 6 to the movable contact 5 completes the stroke, the mark 71 can be completely shot by the high-definition camera 9.
The state of the disconnecting link is matched by setting the position relation between the baffle 8 and the mark 71, so that the mark 71 image acquired in the disconnecting link state is a stable and complete mark 71 image, and the judgment and the determination of a central processing unit are facilitated; the condition that the mark 71 corresponds to the complete closing state is completely shielded, so that the central processing unit can also identify the complete closing state and show the given state to a worker, and the operation and maintenance operation is guided.
Preferably, the method for determining the non-homologous sources of the states of the disconnecting link comprises the following steps:
A. the states of the disconnecting link are respectively detected through two determination sources of contact and non-contact, and detection information of the two determination sources is transmitted to a central processing unit in a wireless connection mode;
B. the central processing unit respectively determines the states of the disconnecting links determined by the two determination sources and outputs the determination results;
C. and the central processing unit compares the knife switch states determined by the two determination sources, takes the consistent result determined by the two determination sources as the finally determined knife switch state, and outputs the finally determined knife switch state.
It can be seen from the above that, the two detection modes have respective characteristics and both have higher reliability, the detection results of the two modes are taken as final determination conditions, the output result includes the determination result of a single detection mode and provides the determination conditions available to the operator, for the contact determination source, the possible failure conditions include battery power failure, circuit wire damage, electrical component damage and the like, which may not be consistent with the determination result of the non-contact source, so that the operator can still perform artificial determination by looking at the determination results of the two detection modes.
Preferably, the detection of the contact determination source in step a comprises the following:
a magnet 3 is arranged on the isolation switch rotating arm 1, and a reed switch 4 is arranged on the isolation switch support 2;
the reed switch 4 is connected to a circuit which is connected with the wireless transmitting module and the power supply;
the reed switch 4 is a normally open reed switch, and when the reed switch is not triggered, the wireless transmitting module and the power supply are in an open circuit;
the magnet moves along with the rotating arm of the isolation switch, when the moving contact 5 is just separated from the static contact 6 to the moving contact 5 to complete the process of the stroke, the magnet 3 triggers the reed switch 4 arranged on the isolation switch support 2 to be conducted, so that the wireless transmitting module is conducted with the power supply, and transmits a signal to the central processing unit;
when the central processing unit receives the signal transmitted by the wireless transmitting module, the isolation switch is determined to be in the switching-off state, and when the signal transmitted by the wireless transmitting module is not received, the isolation switch is determined to be in the switching-on state.
Preferably, the detection of the non-contact determination source in step a comprises the following:
a background plate 7 and a high-definition camera 9 are respectively arranged on two sides of the isolation disconnecting link;
the background plate 7 is provided with a mark 71 identified by color and/or shape;
the high-definition camera 9 is used for aiming at the background plate 7 and transmitting the shot image information to the central processing unit through wireless connection;
a baffle 8 is arranged on the isolation switch rotating arm 1, and the isolation switch rotating arm 1 drives the baffle 8 to rotate when rotating;
when the isolation disconnecting link is completely switched on, the baffle 8 completely shields the mark 71 and is not shot by the high-definition camera 9;
in the process that the driven contact 5 just breaks away from the fixed contact 6 until the moving contact 5 completes the stroke, the mark can be completely shot by the high-definition camera 9;
the central processing unit determines the state of the disconnecting link according to the shot image, when the shot image has a complete mark 71, the isolating disconnecting link is in a switching-off state, and when the shot image has an incomplete mark or no mark 71, the isolating disconnecting link is in a switching-on state.
Preferably, the method further comprises the step D: the determination results of the two determination sources are inconsistent, then a warning signal is output, so that for a worker, the state of the disconnecting link can be determined by the result shown by the system provided by the application with confidence under the condition that the warning signal is not available, and when the inconsistent result is available, the worker can check the isolating disconnecting link and the system provided by the application through the warning signal, so that the detection requirement with a reliable information source is formed, namely, the daily inspection is avoided, and the maintenance workload is greatly reduced.
In the description of the embodiments of the invention, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the embodiments of the present invention, it should be understood that "-" and "-" indicate the same range of two numerical values, and the range includes the endpoints. For example, "A-B" means a range greater than or equal to A and less than or equal to B. "A to B" means a range of not less than A and not more than B.
In the description of the embodiments of the present invention, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The non-homologous knife switch state determining system comprises an isolating knife switch and is characterized by further comprising a contact determining source, a non-contact determining source, a central processing unit and an output unit, wherein the contact determining source and the non-contact determining source are respectively in wireless connection with the central processing unit, the central processing unit receives detection information of the two determining sources and determines the state of the knife switch, the determined state of the knife switch is output through the output unit, and the output unit is a display and/or an audio player.
2. The switch state non-homologous determination system according to claim 1, wherein the contact determination source comprises a magnet disposed on the rotating arm of the isolation switch, a reed switch disposed on the support of the isolation switch, the magnet for triggering the reed switch, and a wireless transmission module disposed on a circuit connecting the wireless transmission module and a power supply.
3. The switch state non-homologous determination system of claim 2, wherein the magnets are all within a position range that triggers the reed switch during a process from when the moving contact on the isolating switch rotating arm just disengages from the stationary contact to when the moving contact completes its stroke.
4. The switch state non-homology determination system of claim 3, wherein the reed switch is a normally open reed switch.
5. The switch state non-homologous determination system according to claim 1, wherein said non-contact determination source comprises a high definition camera, a background plate and a baffle plate arranged on a rotating arm of an isolation switch, said isolation switch is located between said high definition camera and said background plate, said high definition camera is aimed at said background plate, said background plate is provided with a mark identified by color and/or shape.
6. The switch state non-homologous determination system according to claim 4, wherein the barrier rotates with the isolation switch rotating arm, and when the isolation switch is fully closed, the barrier completely shields the mark from being shot by the high definition camera; in the process that the moving contact on the isolating switch rotating arm is just separated from the fixed contact to the moving contact finishes the stroke, the mark can be completely shot by the high-definition camera.
7. A method for determining non-homology of a switch state is characterized by comprising the following steps:
A. the state of the disconnecting link is detected respectively through two determination sources of contact and non-contact, and detection information of the two determination sources is transmitted to a central processing unit in a wireless connection mode;
B. the central processing unit respectively determines the states of the disconnecting links determined by the two determination sources and outputs the determination results;
C. and the central processing unit compares the knife switch states determined by the two determination sources, takes the consistent result determined by the two determination sources as the finally determined knife switch state, and outputs the finally determined knife switch state.
8. The method according to claim 7, wherein the detection of the contact determination source in step a comprises the following:
a magnet is arranged on the isolation switch rotating arm, and a reed switch is arranged on the isolation switch support;
the dry reed pipe is connected to a circuit for connecting the wireless transmitting module with a power supply;
the reed switch is a normally open reed switch, and when the reed switch is not triggered, the wireless transmitting module and the power supply are in an open circuit;
the magnet moves along with the isolating switch rotating arm, when the moving contact is just separated from the fixed contact to the moving contact to complete the process of the stroke of the moving contact, the magnet triggers the reed switch arranged on the isolating switch support to be conducted, so that the wireless transmitting module is conducted with the power supply, and the wireless transmitting module transmits a signal to the central processing unit;
when the central processing unit receives the signal transmitted by the wireless transmitting module, the isolation switch is determined to be in an opening state, and when the central processing unit does not receive the signal transmitted by the wireless transmitting module, the isolation switch is determined to be in a closing state.
9. The method according to claim 7, wherein the detecting of the non-contact determination source in step a comprises the following steps:
a background plate and a high-definition camera are respectively arranged on two sides of the isolation switch;
the background plate is provided with a mark identified by color and/or shape;
the high-definition camera is used for aiming at the background plate and transmitting shot image information to the central processing unit through wireless connection;
the isolation switch rotating arm is provided with a baffle, and the isolation switch rotating arm drives the baffle to rotate when rotating;
when the isolation disconnecting link is completely switched on, the baffle completely shields the mark from being shot by the high-definition camera;
in the process that the moving contact on the isolating switch rotating arm is just separated from the fixed contact to the moving contact finishes the stroke, the mark can be completely shot by the high-definition camera;
the central processing unit determines the state of the disconnecting link according to the shot image, when the shot image has the complete mark, the isolating disconnecting link is in a disconnecting state, and when the shot image has the incomplete mark or the mark is not in the shot image, the isolating disconnecting link is in a closing state.
10. The method for determining non-homologies of blade status according to claim 7, further comprising step D: and if the determination results of the two determination sources are inconsistent, outputting a warning signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911069677.XA CN110942937A (en) | 2019-11-05 | 2019-11-05 | Disconnecting link state non-homologous determination system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911069677.XA CN110942937A (en) | 2019-11-05 | 2019-11-05 | Disconnecting link state non-homologous determination system and method |
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| CN110942937A true CN110942937A (en) | 2020-03-31 |
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| CN201911069677.XA Pending CN110942937A (en) | 2019-11-05 | 2019-11-05 | Disconnecting link state non-homologous determination system and method |
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| CN209487384U (en) * | 2019-01-30 | 2019-10-11 | 珠海优特电力科技股份有限公司 | Grounding switch |
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2019
- 2019-11-05 CN CN201911069677.XA patent/CN110942937A/en active Pending
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| CN102679913A (en) * | 2012-05-25 | 2012-09-19 | 上海交通大学 | Image type knife switch in-place monitoring system and method |
| CN204204718U (en) * | 2014-09-30 | 2015-03-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of isolation switch condition checkout gear |
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