CN113933700A - Method and system for detecting abnormal disconnection fault point of vacuum circuit breaker - Google Patents
Method and system for detecting abnormal disconnection fault point of vacuum circuit breaker Download PDFInfo
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- CN113933700A CN113933700A CN202111239264.9A CN202111239264A CN113933700A CN 113933700 A CN113933700 A CN 113933700A CN 202111239264 A CN202111239264 A CN 202111239264A CN 113933700 A CN113933700 A CN 113933700A
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007935 neutral effect Effects 0.000 claims description 45
- 238000005191 phase separation Methods 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 15
- 238000011217 control strategy Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000001960 triggered effect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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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
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
Abstract
The invention discloses a method for detecting an abnormal disconnection fault point of a vacuum circuit breaker, which comprises the following steps: acquiring the feedback level states of the passing split-phase signal line and the passing split-phase control line; carrying out logic judgment on the level states fed back by the phase-dividing signal line and the phase-dividing control line; and determining a fault point. According to the invention, the level states fed back by the neutral-section passing signal line and the neutral-section passing control line are collected, and the fed-back level states are logically judged, so that the position of a fault point can be rapidly and accurately determined, the fault treatment can be rapidly performed after the motor train unit returns to the garage, and meanwhile, the method has the advantages of reducing the fault maintenance difficulty, reducing the operation and maintenance cost and improving the operation efficiency. The invention also discloses a system for detecting the abnormal disconnection fault point of the vacuum circuit breaker, which is used for realizing the method for detecting the abnormal disconnection fault point of the vacuum circuit breaker.
Description
Technical Field
The invention relates to the technical field of train passing neutral section, in particular to a method for detecting an abnormal disconnection fault point of a vacuum circuit breaker and a system for detecting the abnormal disconnection fault point of the vacuum circuit breaker.
Background
Currently, in order to reduce the influence of unbalanced load on the national grid, the phase of the overhead line system needs to be changed every certain distance. To avoid short circuits, it is necessary to create phase separation zones between the supply sections of different mains voltage phases. Correspondingly, when the train enters and leaves the phase splitting area, the corresponding phase splitting area entering signal and phase splitting area exiting signal are required to be sent to the automatic phase splitting passing device of the train, so that the corresponding processing is adopted, and the phase splitting passing control of the train is realized. Before the train enters the voltage-free interval, the traction is stopped, the vacuum circuit breaker is disconnected, the train runs in the voltage-free interval by means of inertia, and after the train exits the voltage-free interval, the vacuum circuit breaker is connected, and then the train runs in a traction mode.
The motor train unit is provided with two automatic passing phase splitting devices which are respectively arranged on 02 and 06 trains, and only one of the two automatic passing phase splitting devices normally works. The vacuum circuit breakers are two and are arranged on 04 and 06 vehicles, and the two normal vacuum circuit breakers work. The automatic neutral section passing device feeds back neutral section passing forenotice signals and forced interruption signals to the information control terminal device through neutral section passing signal lines, and the information control terminal device controls the high and low levels of the neutral section passing control lines to control the on-off of the full-row vacuum circuit breakers.
However, when the full-line vacuum circuit breaker is abnormally disconnected, it cannot be effectively judged whether the information control terminal device is output by mistake through the phase separation control line or the automatic phase separation device is output by mistake through the phase separation signal line, that is, whether a fault point is the information control terminal device of the vehicle where the automatic phase separation device works or the automatic phase separation device cannot be judged, and therefore the fault is not convenient to quickly and effectively deal with.
Therefore, designing a fault point detection method capable of rapidly and accurately judging the position of a fault point so as to facilitate rapid fault handling after the motor train unit returns to a garage becomes a technical problem to be solved urgently by technical personnel in the field.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a method for detecting the abnormal disconnection fault point of the vacuum circuit breaker.
The invention also provides a system for detecting the abnormal disconnection fault point of the vacuum circuit breaker, which is used for realizing the detection method.
In order to solve the technical problems, the invention adopts the technical scheme that the basic concept is as follows:
a method for detecting an abnormal disconnection fault point of a vacuum circuit breaker comprises the following steps:
acquiring the feedback level states of the passing split-phase signal line and the passing split-phase control line;
carrying out logic judgment on the level states fed back by the phase-dividing signal line and the phase-dividing control line;
and determining a fault point.
In the scheme, the automatic passing neutral section device feeds back a passing neutral section signal to the information control terminal device through the passing neutral section signal line, and the information control terminal device controls the high and low levels of the passing neutral section control line to control the on and off of the full-row vacuum circuit breaker.
The sound production position of the fault point can be accurately and quickly judged through the level states fed back by the split-phase signal line and the split-phase control line, and fault disposal can be quickly carried out after the motor train unit returns to the garage.
Further, if the passing split-phase signal line is at a low level and the passing split-phase control line is at a high level, the fault point is judged to be the information control terminal device;
and if the passing split-phase signal line is at a high level and the passing split-phase control line is at a high level, judging that the fault point is the automatic passing split-phase signal processor.
In the scheme, when the train enters the phase separation area, the magnetic steel receives a phase separation entering signal sent by the ground, the level state of the phase separation control line is from 0 → 1 (namely from low level to high level), the SCR relay is pressurized, the SVCBOR is electrified, the 8X line is pressurized, the VCBOR3 is electrified, and the vacuum circuit breaker is disconnected. When the phase separation area is separated, the magnetic cylinder receives a phase separation signal sent out from the ground, the level state of the phase separation control line is 1 → 0, SVCBCR is electrified, 7X line pressurization is carried out, VCBCR3 is electrified, and the vacuum circuit breaker is closed. The level state of the over-phase separation signal line is from 0 → 1 (i.e. from low level to high level) when passing the over-phase separation signal. That is, normally, when the vacuum circuit breaker is opened, the level state of the phase separation control line is at a high level, and the level state of the phase separation signal line is also at a high level, and therefore, when the level state of the phase separation signal line is at a low level and the level state of the phase separation control line is surely at a high level, it is determined that the fault is erroneously output from the information control terminal device, that is, it is determined that the fault point is the information control terminal device; and when the vacuum circuit breaker is abnormally disconnected, if the passing neutral section signal line and the passing neutral section control line are both high levels, the fault is judged to be output by the automatic passing neutral section signal processor in a wrong way, namely, the fault point is judged to be the automatic passing neutral section signal processor.
Further, the neutral-section passing signal line comprises a neutral-section passing advance notice signal line and a forced interrupt signal line;
if the passing phase separation forenotice signal line and the forced interrupt signal line are both low level and the passing phase separation control line is high level, judging that the fault point is an information control terminal device;
and if the passing neutral section forenotice signal line and/or the forced interrupt signal line is at a high level and the passing neutral section control line is at a high level, judging the fault point to be an automatic passing neutral section signal processor.
In the above-described arrangement, the automatic neutral-section passing means feeds back the neutral-section passing notice signal and the forcible-interruption signal to the information control terminal apparatus via the neutral-section passing notice signal line and the forcible-interruption signal line.
Further, acquiring a closing state of the vacuum circuit breaker;
and triggering logic judgment when the vacuum circuit breaker is abnormally disconnected.
Further, the vacuum circuit breaker includes a first vacuum circuit breaker and a second vacuum circuit breaker;
and in the normal running process of the train, if the first vacuum circuit breaker and the second vacuum circuit breaker are in the off state, judging that the vacuum circuit breakers are in abnormal disconnection.
A second object of the present invention is to provide a system for implementing the above-mentioned abnormal opening fault point detection method of the vacuum circuit breaker, characterized by comprising,
an automatic passing phase separation signal processor for identifying and processing passing phase separation signals;
the information control terminal device is connected with the output end of the automatic passing neutral section signal processor through a passing neutral section signal wire;
the vacuum circuit breaker is connected with the output end of the information control terminal device through a split phase control line;
the device also comprises a data acquisition and processing device which is used for acquiring and processing the level states fed back by the split-phase signal line and the split-phase control line according to a pre-stored control strategy.
In the scheme, the data acquisition and processing device is used for acquiring the feedback level states of the over-phase separation signal line and the over-phase separation control line, wherein 0 represents low level, and 1 represents high level.
Furthermore, the data acquisition and processing device is also used for detecting the closing state of the vacuum circuit breaker.
In the above scheme, the data acquisition and processing device is further configured to detect a closed state of the vacuum circuit breaker, where 0 represents that the vacuum circuit breaker is in an open state, and 1 represents that the vacuum circuit breaker is in a closed state.
Further, the vacuum circuit breaker includes a first vacuum circuit breaker and a second vacuum circuit breaker;
the data acquisition and processing device respectively acquires the closing states of the first vacuum circuit breaker and the second vacuum circuit breaker.
In the above scheme, the first vacuum circuit breaker is a 04-vehicle vacuum circuit breaker, and the second vacuum circuit breaker is a 06-vehicle vacuum circuit breaker.
Further, the control strategy comprises the step of logically judging the collected level states fed back by the phase-passing signal line and the phase-passing control line if the vacuum circuit breaker is detected to be abnormally disconnected.
Further, the excessive phase signal line includes an excessive phase advance notice signal line and a forced interrupt signal line;
the data acquisition and processing device respectively acquires the level states fed back by the passing phase separation forenotice signal line and the forced interrupt signal line.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1) the method and the device have the advantages that the level states fed back by the neutral-section passing signal line and the neutral-section passing control line are collected, the fed-back level states are logically judged, the position of a fault point can be rapidly and accurately determined, the fault handling can be rapidly performed after the motor train unit returns to the garage conveniently, and meanwhile, the fault overhauling difficulty is reduced, the operation and maintenance cost is reduced, and the operation efficiency is improved.
2) The invention collects the closing state of the first vacuum circuit breaker, the closing state of the second vacuum circuit breaker and the level state of the passing phase advance notice signal line, the forced interrupt signal line and the passing phase control line by arranging the data collecting and processing device, processes the collected closing state and level state according to the pre-stored control strategy, can monitor the working condition of the vacuum circuit breaker, and can quickly judge the fault point when the vacuum circuit breaker is abnormally disconnected.
Meanwhile, the invention has simple structure and obvious effect and is suitable for popularization and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to its proper form. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a circuit diagram of a phase-splitting control apparatus in an embodiment of the present invention;
fig. 2 is a schematic structural view of a vacuum circuit breaker abnormal opening fault point detection system in an embodiment of the present invention;
fig. 3 is a flowchart of a method of detecting an abnormal disconnection fault point of a vacuum circuit breaker according to an embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating a logic determination of a level state according to an embodiment of the present invention.
Description of the main elements in the figures:
1. an automatic passing phase separation device; 2. an automatic passing split-phase signal processor; 3. an information control terminal device; 4. a vacuum circuit breaker; 5. a data acquisition and processing device; 6. a passing phase advance signal line; 7. forcibly interrupting the signal line; 8. the control line is phased excessively.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, the embodiment of the present invention introduces a vacuum circuit breaker abnormal opening fault point detection system, which includes an automatic neutral section passing device 1, an information control terminal device 3 and a vacuum circuit breaker 4.
The automatic passing neutral section device 1 comprises a vehicle sensor and an automatic passing neutral section signal processor 2 which are in communication connection with each other, wherein the vehicle sensor comprises magnetic steel and is used for receiving passing neutral section signals sent by the ground, transmitting the passing neutral section signals to the automatic passing neutral section signal processor 2, and identifying and processing the passing neutral section signals by the automatic passing neutral section signal processor 2. The input end of the information control terminal device 3 is connected with the output end of the automatic passing neutral section signal processor 2 through a passing neutral section signal line, the output end of the information control terminal device 3 is connected with the vacuum circuit breaker 4 through a passing neutral section control line 8, passing neutral section signals processed by the automatic passing neutral section signal processor 2 are transmitted to the information control terminal device 3 through the passing neutral section signal line, and the information control terminal device 3 controls the on-off of the vacuum circuit breaker 4 by controlling the high and low levels of the passing neutral section control line 8.
In this embodiment, the passing split-phase signal includes a passing split-phase signal and a leaving split-phase signal, when the train enters the split-phase area, the train sensor receives the entering split-phase signal sent from the ground and transmits the entering split-phase signal to the automatic passing split-phase signal processor 2, the automatic passing split-phase signal processor 2 transmits the entering split-phase signal to the information control terminal device 3 through the passing split-phase signal line, the information control terminal device 3 controls the level state of the passing split-phase control line 8 to be changed from 0 → 1 (i.e., from low level to high level), the SCR relay is pressurized, the SVCBOR is energized, the 8X line is pressurized, the VCBOR3 is energized, and the vacuum circuit breaker 4 is disconnected. When a train leaves a phase separation area, the train sensors receive phase separation signals sent by the ground and transmit the phase separation signals to the automatic passing phase separation signal processor 2, the automatic passing phase separation signal processor 2 transmits the phase separation signals to the information control terminal device 3 through a passing phase separation signal line, the information control terminal device 3 controls the level state of the passing phase separation control line 8 to be 1 → 0, SVCBCR is electrified, 7X line pressurization is carried out, VCBCR3 is electrified, and the vacuum circuit breaker 4 is closed. The level state of the over-phase separation signal line is from 0 → 1 (i.e. from low level to high level) when passing the over-phase separation signal.
In this embodiment, the phase-splitting advance signal includes a phase-splitting advance notice signal and a forced interrupt signal, and correspondingly, the phase-splitting advance signal line includes a phase-splitting advance notice signal line 6 and a forced interrupt signal line 7, which are respectively used for transmitting the phase-splitting advance notice signal and the forced interrupt signal; the vacuum circuit breaker 4 includes a first vacuum circuit breaker provided in a 04 car and a second vacuum circuit breaker provided in a 06 car.
Preferably, in this embodiment, the vacuum circuit breaker abnormal opening fault point detection system further includes a data acquisition and processing device 5, and the data acquisition and processing device 5 is configured to respectively acquire the closed state of the first vacuum circuit breaker, the closed state of the second vacuum circuit breaker, and the level state of the passing phase advance notice signal line 6, the forced interrupt signal line 7, and the passing phase control line 8, and process the acquired closed state and level state according to a pre-stored control strategy.
Preferably, in this embodiment, the control strategy includes, when abnormal opening of the vacuum circuit breaker 4 is detected, performing logic judgment on the level states fed back by the collected passing phase advance notice signal line 6, the forced interrupt signal line 7 and the passing phase control line 8.
Based on the above, as shown in fig. 1 and fig. 2, an embodiment of the present invention further introduces a method for detecting an abnormal disconnection fault point of a vacuum circuit breaker, which specifically includes the following steps:
s1: the closing state of the vacuum circuit breaker 4 and the level state fed back by the phase-dividing signal line and the phase-dividing control line 8 are collected.
In this embodiment, the automatic neutral section passing apparatus 1 feeds back a neutral section passing signal to the information control terminal apparatus 3 via the neutral section passing signal line, and the information control terminal apparatus 3 controls the high and low levels of the neutral section passing control line 8 to control the on and off of the all-row vacuum circuit breaker 4. The sound production position of the fault point can be accurately and quickly judged through the level states fed back by the split-phase signal line and the split-phase control line 8, and fault disposal can be quickly carried out after the motor train unit returns to the garage.
S2: whether the vacuum circuit breaker 4 is abnormally opened is judged according to the closed state of the vacuum circuit breaker 4.
In this embodiment, vacuum circuit breaker 4 is including setting up the first vacuum circuit breaker at 04 cars and setting up the second hollow circuit breaker at 06 departments, and the train normal driving in-process, if first vacuum circuit breaker and second vacuum circuit breaker are the off-state, then judge that vacuum circuit breaker 4 is unusual disconnection.
S3: the level states fed back by the phase-dividing signal line and the phase-dividing control line 8 are logically judged.
In this embodiment, the logical judgment is triggered when the vacuum circuit breaker 4 is abnormally opened.
Preferably, in this embodiment, in the normal running process of the train, if the first vacuum circuit breaker and the second vacuum circuit breaker are both in the off state, it is determined that the vacuum circuit breaker 4 is abnormally opened, and the data acquisition and processing device 5 is triggered to perform logic determination on the acquired level state fed back by the phase-passing signal line and the level state fed back by the phase-passing control line 8.
S4: and determining a fault point.
In this embodiment, if the level state fed back by the neutral section passing signal line is a low level and the level state fed back by the neutral section passing control line 8 is a high level, it is determined that the fault point is the information control terminal device 3;
if the level state fed back by the neutral-section passing signal line is high level and the level state fed back by the neutral-section passing control line 8 is also high level, the fault point is judged to be the automatic neutral-section passing signal processor 2, namely the fault point is the automatic neutral-section passing device 1.
In this embodiment, the basis for determining the fault point is as follows:
normally, when the vacuum circuit breaker 4 is opened, the level state of the phase separation control line 8 is at a high level, and the level state of the phase separation signal line is also at a high level, so that when the level state of the phase separation signal line is at a low level and the level state of the phase separation control line 8 is determined to be at a high level, the fault is determined to be erroneously output by the information control terminal device 3, that is, the fault point is determined to be the information control terminal device 3; when the vacuum circuit breaker 4 is abnormally disconnected, if the passing neutral section signal line and the passing neutral section control line 8 are both high level, the fault is judged to be output by the automatic passing neutral section signal processor 2 by mistake, namely, the fault point is judged to be the automatic passing neutral section signal processor 2.
Preferably, in the present embodiment, the excessive phase signal line includes an excessive phase advance notice signal line 6 and a forcible interruption signal line 7. Then, in the present embodiment, "S3: the level states fed back by the phase-dividing signal line and the phase-dividing control line 8 are logically judged; s4: determining a fault point "specifically includes:
if the passing phase separation forenotice signal line 6 and the forced interrupt signal line 7 are both low level and the passing phase separation control line 8 is high level, the fault point is judged to be the information control terminal device 3;
if the passing phase advance notice signal line 6 and/or the forced interrupt signal line 7 is at a high level and the passing phase control line 8 is at a high level, the fault point is judged to be the automatic passing phase signal processor 2, namely the automatic passing phase device 1.
According to the invention, the level states fed back by the neutral-section passing signal line and the neutral-section passing control line 8 are collected, and the fed-back level states are logically judged, so that the position of a fault point can be rapidly and accurately determined, the fault treatment can be rapidly performed after the motor train unit returns to the garage, and meanwhile, the method has the advantages of reducing the fault maintenance difficulty, reducing the operation and maintenance cost and improving the operation efficiency.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for detecting an abnormal disconnection fault point of a vacuum circuit breaker is characterized by comprising the following steps:
the level states fed back by the passing split-phase signal line and the passing split-phase control line (8) are collected;
the level states fed back by the phase-dividing signal line and the phase-dividing control line (8) are logically judged;
and determining a fault point.
2. The vacuum circuit breaker abnormal opening fault point detection method according to claim 1,
if the passing split-phase signal line is at low level and the passing split-phase control line (8) is at high level, the fault point is judged to be the information control terminal device (3);
if the passing split-phase signal line is at high level and the passing split-phase control line (8) is at high level, the fault point is judged to be the automatic passing split-phase signal processor (2).
3. The vacuum circuit breaker abnormal opening fault point detection method according to claim 2,
the excessive phase signal line comprises an excessive phase advance notice signal line (6) and a forced interrupt signal line (7);
if the passing phase separation forenotice signal line (6) and the forced interrupt signal line (7) are both low level and the passing phase separation control line (8) is high level, the fault point is judged to be the information control terminal device (3);
if the neutral-section passing forenotice signal line (6) and/or the forced interrupt signal line (7) is at a high level and the neutral-section passing control line (8) is at a high level, the fault point is judged to be the automatic neutral-section passing signal processor (2).
4. The vacuum circuit breaker abnormal opening fault point detection method according to any one of claims 1 to 3,
acquiring a closed state of a vacuum circuit breaker (4);
and triggering logic judgment when the vacuum circuit breaker (4) is abnormally disconnected.
5. The vacuum circuit breaker abnormal opening fault point detection method according to claim 4,
the vacuum circuit breaker (4) comprises a first vacuum circuit breaker and a second vacuum circuit breaker;
and in the normal running process of the train, if the first vacuum circuit breaker and the second vacuum circuit breaker are in the off state, judging that the vacuum circuit breaker (4) is in abnormal disconnection.
6. A system for implementing the abnormal breaking fault point detection method of the vacuum circuit breaker according to any one of the above claims 1 to 5, comprising,
an automatic passing phase signal processor (2) for identifying and processing passing phase signals;
the information control terminal device (3) is connected with the output end of the automatic passing neutral section signal processor (2) through a passing neutral section signal wire;
the vacuum circuit breaker (4) is connected with the output end of the information control terminal device (3) through a phase-splitting control line (8);
the device also comprises a data acquisition and processing device (5) which is used for acquiring and processing the level states fed back by the split-phase passing signal line and the split-phase passing control line (8) according to a pre-stored control strategy.
7. The vacuum circuit breaker abnormal opening fault point detection system according to claim 6,
the data acquisition and processing device (5) is also used for detecting the closing state of the vacuum circuit breaker (4).
8. The vacuum circuit breaker abnormal opening fault point detection system according to claim 7,
the vacuum circuit breaker (4) comprises a first vacuum circuit breaker and a second vacuum circuit breaker;
the data acquisition and processing device (5) respectively acquires the closing states of the first vacuum circuit breaker and the second vacuum circuit breaker.
9. The vacuum circuit breaker abnormal opening fault point detection system according to claim 8,
the control strategy comprises the step of carrying out logic judgment on the collected level states fed back by the phase passing signal line and the phase passing control line (8) if the vacuum circuit breaker (4) is detected to be abnormally disconnected.
10. The vacuum circuit breaker abnormal opening fault point detection system according to any one of claims 6 to 9,
the excessive phase signal line comprises an excessive phase advance notice signal line (6) and a forced interrupt signal line (7);
the data acquisition and processing device (5) respectively acquires the level states fed back by the passing phase separation forenotice signal line (6) and the forced interrupt signal line (7).
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| CN202111239264.9A CN113933700A (en) | 2021-10-25 | 2021-10-25 | Method and system for detecting abnormal disconnection fault point of vacuum circuit breaker |
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| CN202111239264.9A CN113933700A (en) | 2021-10-25 | 2021-10-25 | Method and system for detecting abnormal disconnection fault point of vacuum circuit breaker |
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| CN112463501A (en) * | 2020-12-11 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Method, equipment and storage medium for rapidly positioning fault of abnormal power failure |
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