CN108444660B - Nitrogen leakage fault diagnosis method, device and system - Google Patents
Nitrogen leakage fault diagnosis method, device and system Download PDFInfo
- Publication number
- CN108444660B CN108444660B CN201810652218.3A CN201810652218A CN108444660B CN 108444660 B CN108444660 B CN 108444660B CN 201810652218 A CN201810652218 A CN 201810652218A CN 108444660 B CN108444660 B CN 108444660B
- Authority
- CN
- China
- Prior art keywords
- level change
- level
- preset
- test point
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 207
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 102
- 238000003745 diagnosis Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 167
- 230000008859 change Effects 0.000 claims abstract description 152
- 238000003860 storage Methods 0.000 claims description 35
- 238000004590 computer program Methods 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005355 Hall effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 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
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention is suitable for the technical field of power equipment maintenance, and provides a nitrogen leakage fault diagnosis method, a device and a system, wherein the method comprises the following steps: acquiring level change information of each preset test point, wherein the level change information comprises level change time and high level duration; when the circuit breaker sends out a nitrogen leakage fault alarm, acquiring the level state of each preset test point at the alarm moment; determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and high level duration of each test point; and determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information. The invention can quickly determine the fault type, position the fault position, shorten the maintenance period and greatly improve the maintenance efficiency.
Description
Technical Field
The invention belongs to the technical field of power equipment maintenance, and particularly relates to a nitrogen leakage fault diagnosis method, device and system.
Background
The high-voltage circuit breaker is the most important electrical component in the power grid and plays a role in control and protection in the power grid. Taking siemens 3AQ1EG type circuit breaker as an example, the type circuit breaker adopts a compressed gas type high-voltage circuit breaker with SF6 gas as an insulation and arc extinguishing medium, is provided with a hydraulic nitrogen gas operating mechanism, has the advantages of convenient installation, simple operation, stable operation, less workload of maintenance and the like, and is widely applied to the switching of reactive power compensation devices such as reactors, capacitors and the like in a power grid. However, statistical data used on site indicate that nitrogen leakage is a fault which often occurs in the circuit breaker, when the circuit breaker has the nitrogen leakage fault, the circuit breaker can send out a nitrogen leakage alarm signal, at present, the nitrogen leakage fault type of the circuit breaker is determined by adopting a manual maintenance mode, the maintenance period is long, and the efficiency is low.
Disclosure of Invention
In view of this, embodiments of the present invention provide a nitrogen leakage fault diagnosis method, apparatus, and system, so as to solve the problems in the prior art that a manual overhaul manner is adopted to determine a nitrogen leakage fault type of a circuit breaker, and the overhaul period is long and the efficiency is low.
To achieve the above object, a first aspect of an embodiment of the present invention provides a nitrogen leakage fault diagnosis method, including:
if the level of one test point in preset test points in a circuit breaker control circuit changes, acquiring level change information of the preset test points, wherein the level change information comprises level change time and high level duration;
when the circuit breaker sends out a nitrogen leakage fault alarm, acquiring the level state of each preset test point at the alarm moment;
determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and high level duration of each test point;
and determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
Further, the acquiring the level change information of each preset test point includes:
and acquiring level change information of each preset test point through a clock module, and storing the level change information into a storage module.
Further, the determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information includes:
and respectively matching the preset sequence of the level change of each test point, the time interval of the level change and the level state at the alarm moment with the preset fault type information, and determining the fault type successfully matched.
Further, the nitrogen leakage fault diagnosis method further includes:
acquiring the alarm time of the nitrogen leakage fault alarm of the circuit breaker through a clock module;
and storing the nitrogen leakage fault type and the alarm time in a storage module, and sending the nitrogen leakage fault type and the alarm time to a display module for displaying.
A second aspect of an embodiment of the present invention provides a nitrogen leakage fault diagnosis apparatus, including:
the circuit breaker control circuit comprises a first obtaining unit, a second obtaining unit and a control unit, wherein the first obtaining unit is used for obtaining level change information of each preset test point if the level of one test point in each preset test point in the circuit breaker control circuit changes, and the level change information comprises level change time and high level duration;
the second acquisition unit is used for acquiring the level state of each preset test point at the alarm moment when the circuit breaker sends out a nitrogen leakage fault alarm;
the information determining unit is used for determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and the high level duration of each test point;
and the fault type determining unit is used for determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
Further, the first acquisition unit includes:
and the information storage unit is used for acquiring the level change information of each preset test point through the clock module and storing the level change information into the storage module.
Further, the fault type determination unit includes:
and the information matching unit is used for matching the preset sequence of level change of each test point, the time interval of the level change and the level state at the alarm moment with the preset fault type information respectively to determine the fault type successfully matched.
A third aspect of the embodiments of the present invention provides a nitrogen leakage fault diagnosis system, including a test module and a processor;
the test module is connected with the processor, and is used for acquiring level change information of each preset test point in a circuit breaker control circuit, wherein the level change information comprises a level change moment and a high level duration time, and is also used for acquiring a level state of each preset test point at the moment that the circuit breaker sends out a nitrogen leakage fault alarm;
the processor is used for acquiring level change information of each preset test point through the test module if the level of one test point in each preset test point in the circuit breaker control circuit changes; when the circuit breaker sends out a nitrogen leakage fault alarm, the level state of each preset test point at the alarm moment is obtained through the test module; determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and high level duration of each test point; and determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
Further, the nitrogen leakage fault diagnosis system also comprises a storage module, and the test module comprises a clock module;
the processor is respectively connected with the storage module and the clock module, and is further used for acquiring the level change information of each test point through the clock module and storing the level change information to the storage module.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the nitrogen leakage fault diagnosis method of the first aspect described above.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: if the level of one test point of each preset test point in the circuit breaker control circuit changes, the level change information of each preset test point is obtained, the dynamic state of the circuit breaker control circuit can be effectively monitored, and the level change information of each test point can be accurately mastered; when the breaker sends out a nitrogen leakage fault alarm, acquiring the level state of each preset test point at the alarm moment so as to analyze the fault type; the method comprises the steps of determining the sequence of level change and the time interval of level change of each preset test point according to the preset level change time and high level duration of each test point, determining the nitrogen leakage fault type of the circuit breaker according to the sequence of level change of each preset test point, the time interval of level change, the level state at the alarm time and the preset fault type characteristic information, realizing automatic diagnosis of nitrogen leakage faults, rapidly determining the fault type, positioning the fault position, shortening the maintenance period and greatly improving the maintenance efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic flow chart of a nitrogen leakage fault diagnosis method according to an embodiment of the present invention;
fig. 2 is a logic simplified diagram of a high voltage circuit breaker control circuit;
fig. 3 is a timing diagram of preset test points in a class I fault according to an embodiment of the present invention;
fig. 4 is a timing diagram of preset test points in a class II fault according to an embodiment of the present invention;
fig. 5 is a timing diagram of preset test points in a class III fault according to an embodiment of the present invention;
fig. 6 is a timing diagram of preset test points in a class IV fault according to an embodiment of the present invention;
fig. 7 is a timing diagram of preset test points in a class V fault according to an embodiment of the present invention;
fig. 8 is a timing diagram of preset test points in a vi-type fault according to an embodiment of the present invention;
fig. 9 is a timing diagram of preset test points in a class vii fault according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a nitrogen leakage fault diagnosis apparatus according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a nitrogen leakage fault diagnosis system according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a nitrogen leakage fault diagnosis system according to another embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, a first aspect of the embodiments of the present invention provides a nitrogen leakage fault diagnosis method, including:
s101, if the level of one test point in each preset test point in the circuit breaker control circuit changes, obtaining level change information of each preset test point, wherein the level change information comprises level change time and high level duration.
Specifically, taking siemens 3AQ1EG type circuit breaker as an example, fig. 2 is a logic simplified diagram of a control circuit of the type circuit breaker, which comprises an oil pump control circuit 201, a nitrogen blocking circuit 202 and a nitrogen leakage alarm circuit 203, wherein each relay and switch node have specific reference numbers in the prior art, and those skilled in the art should understand that B1-P is a pressure switch, and has two groups of switch nodes B1-P/(1, 2, 3) and B1-P/(4, 5, 6); k15 is a pressing delay time relay, three connecting ends of which are respectively represented by A1, A2 and B1, and a switch node is represented by K15/(15, 16 and 18); k9 is a motor pressure relay, two connecting ends of which are respectively represented by A1 and A2, and a switch node is represented by K9/(43, 44); k67 is a pressing overtime time relay, two connecting ends of which are respectively represented by A1 and A2, and a switch node is represented by K67/(15, 16 and 18); k81 is a nitrogen leakage relay, two connecting ends of which are respectively represented by A1 and A2, and the nitrogen leakage relay is provided with three groups of switching nodes of K81/(4, 5, 6), K81/(7, 8, 9) and K81/(10, 11, 12); k182 is a nitrogen leakage alarm relay, two connecting ends of which are respectively represented by A1 and A2, and two groups of switching nodes of K182/(33, 34) and K182/(43, 44) are provided; k14 is a time relay, two connecting ends of which are respectively represented by A1 and A2; k is a locking node; s4 is the reset button, and its switch node is represented as S4/(11, 12). A. B, C, D, E and F are six preset test points, and the level change information of each test point can reflect the action change of different relays or switch nodes in the circuit. If the level of one test point in each test point changes, the corresponding relay in the circuit is shown to act (be connected or disconnected), and the risk of nitrogen leakage exists, at the moment, the level change information of each test point can be obtained through the clock module, the level change information comprises the level change moment and the high level duration of each test point, and is used for judging the fault type when the nitrogen leakage fault occurs.
S102, when the breaker gives out a nitrogen leakage fault alarm, acquiring the level state of each preset test point at the alarm moment.
Specifically, when the F test point is at a high level, the circuit breaker performs nitrogen leakage fault alarm, and the level state of each test point at the alarm time can be obtained through the level state detection module, so that the on-off state of each relay in the circuit at the alarm time can be determined, the fault type can be analyzed, and the obtained level state can be stored in the storage module firstly.
S103, determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and the high level duration of each test point.
Specifically, the level change time and the high level duration of each test point are called from the storage module, so that the sequence of the level change of each test point and the time interval of the level change can be obtained, that is, the sequence of the actions generated by the corresponding relay is determined, and the time interval of the level change can be the time interval of two level change times in the same test point or the time interval of two level change times in different test points.
And S104, determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
Table-fault type characteristic information table
Description of the drawings: 1.↓ represents a high level, and ↓ represents a low level;
2. a corresponds to B1-P/1 acquisition, B corresponds to K9/A1 acquisition, C corresponds to K9/44 acquisition, D corresponds to K81/A1 acquisition, E corresponds to K182/A1 acquisition, and F corresponds to K182/44 acquisition;
3, the I-type fault is a nitrogen leakage hard fault;
the II type fault is the bonding of a pressure switch B1-P/(1, 2) node;
the III-type fault is the misconduction of a node of a pressing delay time relay K15/(15, 18);
the IV fault is the misconduction of a node B1-P/(4, 6) of the pressure switch;
the V-type fault is the false conduction of a node K182/(33, 34) of the nitrogen leakage alarm relay;
the VI type fault is the false conduction of a node K81/(7, 8) of the nitrogen leakage relay or a node K182/(23, 24) of the nitrogen leakage alarm relay;
the VII type fault is that the delay time is too long after the pressing delay time relay K15 is powered off or the K15/(15, 18) node is bonded.
The type I faults belong to hard faults, the type II, III, IV, V, VI and VII faults belong to soft faults, and if the type of the faults is finally determined to belong to the soft faults, workers can overhaul the faults through a specific circuit, so that power failure overhaul is avoided, and great influence is caused on daily life and industrial production.
Referring to fig. 3 to 9, the fault characteristics of each fault type are as follows:
the I-type faults are that the time sequence square waves of all test points are shown in figure 3, A is firstly changed into high level at the time of t1 and is restored into low level at the time of t2, D is changed into high level at the time of t3 and meets the condition that t3-t2 is less than 1 s;
type II failures: the time sequence square wave of each test point is shown in fig. 4, A is firstly changed into high level at the time of t1 and is continuously kept at the high level all the time, D is changed into high level at the time of t2, and t2-t1>15s are met;
and (3) type III faults: the time sequence square wave of each test point is shown in fig. 5, B is firstly changed into high level at the time of t1 and is continuously kept at the high level all the time, A is always kept at the low level, D is changed into high level at the time of t2, and t2-t1>15s are met;
type IV failure: the time sequence square wave of each test point is shown in fig. 6, a is firstly mutated into a high level at the time of t1 and is always maintained at the high level, B is immediately restored into a low level after being mutated into the high level, and F is jumped into the high level at the time of t2 and meets the condition that t2-t1 is less than 1 s;
and (3) a V-type fault: as shown in fig. 7, A, B, C is always maintained at a low level, D is first mutated to a high level at a time t1, E is first mutated to a high level at a time t3, and F is first mutated to a high level at a time t2, and t2-t1<1s, t3> t1 are satisfied;
type VI failure: the time sequence square wave of each test point is shown in fig. 8, E is firstly mutated into high level at the time of t1, D, F is simultaneously mutated into high level at the time of t2, and t2> t1, t2-t1<1 s;
and (4) class VII fault: the timing square wave of each test point is shown in fig. 9, a is firstly changed to high level at time t1, the time t2 is changed to low level, B is changed to low level at time t3, and t3-t2>3S, t4-t3< 1S.
Specifically, referring to table one, the table one includes characteristic information corresponding to various fault types, and by matching information such as the sequence of level changes of the test points, time intervals of the level changes, and level states at the alarm time with the fault characteristic information, it is determined that the fault type successfully matched is the nitrogen leakage fault type in the actual situation.
The nitrogen leakage fault diagnosis method provided by the embodiment of the invention comprises the following steps: if the level of one test point of each preset test point in the circuit breaker control circuit changes, the level change information of each preset test point is obtained, the dynamic state of the circuit breaker control circuit can be effectively monitored, and the level change information of each test point can be accurately mastered; when the breaker sends out a nitrogen leakage fault alarm, acquiring the level state of each preset test point at the alarm moment so as to analyze the fault type; the method comprises the steps of determining the sequence of level change and the time interval of level change of each preset test point according to the preset level change time and high level duration of each test point, determining the nitrogen leakage fault type of the circuit breaker according to the sequence of level change of each preset test point, the time interval of level change, the level state at the alarm time and the preset fault type characteristic information, realizing automatic diagnosis of nitrogen leakage faults, rapidly determining the fault type, positioning the fault position, shortening the maintenance period and greatly improving the maintenance efficiency.
Further, the acquiring the level change information of each preset test point includes:
and acquiring level change information of each preset test point through a clock module, and storing the level change information into a storage module.
Specifically, the clock module collects the level change time and the high level duration of each test point in a time period from the time when the first test point changes the level to the time when the nitrogen leakage fault alarm occurs, the level change information is obtained through the clock module, a certain time is needed for obtaining the level change information, the complete level change information can not be obtained until the nitrogen leakage fault alarm occurs on the circuit breaker, the level state detection module collects the level state of each test point at the alarm time, the level state of each test point at the alarm time is obtained through the level state detection module, the obtained level change information and the obtained level state can be stored in the storage module, when the fault type is analyzed, the required information is called from the storage module, and the orderliness and the accuracy of the obtained information are improved.
Further, determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information includes:
and respectively matching the preset sequence of the level change of each test point, the time interval of the level change and the level state at the alarm moment with the preset fault type information, and determining the fault type successfully matched.
Specifically, in the matching process, the matching process of the level state of each test point at the alarm moment is relatively simple, the level state of each test point at the alarm moment can be preferentially matched, the fault type successfully matched in the first stage is determined, the sequence of level change of each test point and the time interval of level change are matched with the fault information of the fault type successfully matched in the first stage, the fault type successfully matched in the second stage is determined, namely the fault type of the nitrogen leakage fault of the circuit breaker is determined, the matching algorithm is optimized, the matching efficiency is improved, the matching result is more accurate, the fault position can be quickly and accurately positioned according to the finally determined fault type, and the overhauling efficiency is improved.
Further, the nitrogen leakage fault diagnosis method further includes:
acquiring the alarm time of the nitrogen leakage fault alarm of the circuit breaker through a clock module;
and storing the nitrogen leakage fault type and the alarm time in a storage module, and sending the nitrogen leakage fault type and the alarm time to a display module for displaying.
Specifically, reveal the fault type with nitrogen gas and report to the police constantly through display module and show, can help the staff more audio-visual understanding trouble condition, help improving maintenance efficiency, shorten maintenance cycle.
Referring to fig. 10, a second aspect of the embodiments of the present invention provides a nitrogen leakage fault diagnosis apparatus including:
the circuit breaker control circuit comprises a first obtaining unit 1001, a second obtaining unit and a control unit, wherein the first obtaining unit is used for obtaining level change information of each preset test point if the level of one test point in each preset test point in the circuit breaker control circuit changes, and the level change information comprises level change time and high level duration;
a second obtaining unit 1002, configured to obtain level states of preset test points at an alarm time when the circuit breaker sends a nitrogen leakage fault alarm;
an information determining unit 1003, configured to determine, according to the preset level change time and the high level duration of each test point, a sequence of level changes and a time interval of the level changes of each test point;
and the fault type determining unit 1004 is used for determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
Further, the first obtaining unit 1001 includes:
and the information storage unit is used for acquiring the level change information of each preset test point through the clock module and storing the level change information into the storage module.
Further, the fault type determination unit 1004 includes:
and the information matching unit is used for matching the preset sequence of level change of each test point, the time interval of the level change and the level state at the alarm moment with the preset fault type information respectively to determine the fault type successfully matched.
Further, the nitrogen leakage failure diagnosis apparatus further includes:
the alarm time acquisition unit is used for acquiring alarm time of the nitrogen leakage fault alarm of the circuit breaker through a clock module;
and the output unit is used for storing the nitrogen leakage fault type and the alarm time into a storage module and sending the nitrogen leakage fault type and the alarm time to a display module for displaying.
Referring to fig. 11, a third aspect of the embodiments of the present invention provides a nitrogen leakage fault diagnosis system, including a test module 1120 and a processor 1110;
the test module 1120 is connected to the processor 1110, and is configured to collect level change information of each preset test point in a circuit breaker control circuit, where the level change information includes a level change time and a high level duration, and is further configured to collect a level state of each preset test point at a time when the circuit breaker sends a nitrogen leakage fault alarm;
the processor 1110 is configured to, if a level of one test point of preset test points in the circuit breaker control circuit changes, obtain level change information of the preset test points through the test module 1120; when the circuit breaker gives out a nitrogen leakage fault alarm, the level state of each preset test point at the alarm moment is obtained through the test module 1120; determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and high level duration of each test point; and determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
Specifically, the test module 1120 includes a level state detection module 1121 and a clock module 1122, both the level state detection module 1121 and the clock module 1122 are connected to the processor 1110, the level state detection module 1121 is configured to acquire a level state preset at a time when the circuit breaker sends a nitrogen leakage fault alarm, the clock module 1122 is configured to acquire level change information preset at each test point in the circuit breaker control circuit, the level state detection module 1121 includes six a3144E type hall effect sensors respectively arranged at the six test points, and further includes a signal processing circuit, and the signal processing circuit is connected to the processor 1110. The current conduction generates a magnetic field, and the Hall effect sensor A3144E outputs a low level when a magnetic substance approaches, otherwise, the Hall effect sensor keeps a high level. After inverting the collected level signal, the detected level state is converted into a low level signal recognizable by the processor through an optical coupler in the signal processing loop, and the low level signal is sent to an interrupt processing module of the processor 1110, and after receiving the low level signal, the processor 1110 acquires the relevant information of each test point through the test module. The nitrogen leakage fault diagnosis system in the embodiment realizes automatic diagnosis of nitrogen leakage faults in the circuit breaker, can quickly determine fault types and locate fault positions, shortens maintenance period and greatly improves maintenance efficiency.
Referring to fig. 12, further, the nitrogen leakage fault diagnosis system further includes a storage module 1130, and the test module 1120 includes a clock module 1122;
the processor 1110 is connected to the storage module 1130 and the clock module 1122, and further configured to obtain level variation information of each test point through the clock module 1122, and store the level variation information in the storage module 1130.
Specifically, the clock module 1122 adopts a DS1302S chip and is connected to a serial communication module of the processor 1110, the processor 1110 reads the level state of the corresponding pin through the level state detection module 11221, acquires the level change information of each test point through the clock module 1122, and stores the acquired level state and level change information in the storage module 1130, where the storage module 1130 is formed by an EEPROM chip, and specifically, a 24C02C-E/MS chip may be adopted.
Referring to fig. 12, further, the nitrogen leakage fault diagnosis system further includes a display module 1140, where the display module 1140 includes a liquid crystal display chip and a liquid crystal display, and the liquid crystal display chip is connected to the serial port communication module of the processor 1110, so that the fault type and the fault time of the nitrogen leakage can be clearly and intuitively displayed.
The processor 1110 is further configured to match a preset sequence of level changes of the test points, a preset time interval of the level changes, and a preset level state at the alarm time with preset fault type information, and determine a fault type successfully matched. When the high level is detected at the test point F, the processor 1110 calls the information stored in the storage module 1130, matches the sequence of the levels of the six A, B, C, D, E, F sampling points, the time sequence of the potential abrupt change and the duration of the high level with the fault type feature information stored in the processor 1110, and displays the matched fault type on the liquid crystal display. The processor 1110 is further configured to obtain an alarm time when the nitrogen leakage fault alarm occurs in the circuit breaker through the clock module 1122, store the type of the nitrogen leakage fault and the alarm time in the storage module 1130, and send the type and the alarm time to the display module 1140 for displaying.
Referring to fig. 12, further, the nitrogen leakage fault diagnosis system further includes a key module 1150, the key module 1150 employs a multi-way switch input circuit, and the key module 1150 is connected with an I/O interface module of the processor.
Referring to fig. 12, further, the nitrogen leakage fault diagnosis system further includes a power module 1160, where the power module 1160 includes a rectification voltage-reduction circuit and a power conversion chip, the rectification voltage-reduction circuit is externally connected to 220V mains supply, and after rectification and voltage-reduction processing of the mains supply, the power conversion chip provides power for the processor 1110, the level state detection module 1121, the clock module 1122, the storage module 1130, the display module 1140 and the key module 1150.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A nitrogen leak failure diagnosis method characterized by comprising:
if the level of one test point in preset test points in a circuit breaker control circuit changes, acquiring level change information of the preset test points, wherein the level change information comprises level change time and high level duration; the acquiring of the level change information of each preset test point comprises: acquiring level change information of each preset test point through a clock module, and storing the level change information into a storage module;
when the circuit breaker sends out a nitrogen leakage fault alarm, acquiring the level state of each preset test point at the alarm moment;
determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and high level duration of each test point;
and determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
2. The nitrogen leakage fault diagnosis method according to claim 1, wherein the determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level changes of the test points, the time interval of the level changes, the level state at the alarm time, and the preset fault type characteristic information includes:
and respectively matching the preset sequence of the level change of each test point, the time interval of the level change and the level state at the alarm moment with the preset fault type information, and determining the fault type successfully matched.
3. The nitrogen gas leak fault diagnosis method according to claim 1, characterized by further comprising:
acquiring the alarm time of the nitrogen leakage fault alarm of the circuit breaker through a clock module;
and storing the nitrogen leakage fault type and the alarm time in a storage module, and sending the nitrogen leakage fault type and the alarm time to a display module for displaying.
4. A nitrogen gas leak failure diagnosis device characterized by comprising:
the circuit breaker control circuit comprises a first obtaining unit, a second obtaining unit and a control unit, wherein the first obtaining unit is used for obtaining level change information of each preset test point if the level of one test point in each preset test point in the circuit breaker control circuit changes, and the level change information comprises level change time and high level duration; the first acquisition unit includes: the information storage unit is used for acquiring level change information of each preset test point through a clock module and storing the level change information to a storage module;
the second acquisition unit is used for acquiring the level state of each preset test point at the alarm moment when the circuit breaker sends out a nitrogen leakage fault alarm;
the information determining unit is used for determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and the high level duration of each test point;
and the fault type determining unit is used for determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
5. The nitrogen leakage failure diagnosis device according to claim 4,
the fault type determination unit includes:
and the information matching unit is used for matching the preset sequence of level change of each test point, the time interval of the level change and the level state at the alarm moment with the preset fault type information respectively to determine the fault type successfully matched.
6. The nitrogen leakage fault diagnosis system is characterized by comprising a test module and a processor;
the test module is connected with the processor, and is used for acquiring level change information of each preset test point in a circuit breaker control circuit, wherein the level change information comprises a level change moment and a high level duration time, and is also used for acquiring a level state of each preset test point at the moment that the circuit breaker sends out a nitrogen leakage fault alarm;
the processor is used for acquiring level change information of each preset test point through the test module if the level of one test point in each preset test point in the circuit breaker control circuit changes; when the circuit breaker sends out a nitrogen leakage fault alarm, the level state of each preset test point at the alarm moment is obtained through the test module; determining the sequence of the level change of each preset test point and the time interval of the level change according to the preset level change time and high level duration of each test point; and determining the nitrogen leakage fault type of the circuit breaker according to the preset sequence of the level change of each test point, the time interval of the level change, the level state at the alarm moment and the preset fault type characteristic information.
7. The nitrogen leak fault diagnostic system of claim 6, further comprising a storage module, the test module comprising a clock module;
the processor is respectively connected with the storage module and the clock module, and is further used for acquiring the level change information of each test point through the clock module and storing the level change information to the storage module.
8. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the nitrogen leakage fault diagnosis method according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810652218.3A CN108444660B (en) | 2018-06-22 | 2018-06-22 | Nitrogen leakage fault diagnosis method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810652218.3A CN108444660B (en) | 2018-06-22 | 2018-06-22 | Nitrogen leakage fault diagnosis method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108444660A CN108444660A (en) | 2018-08-24 |
| CN108444660B true CN108444660B (en) | 2020-01-07 |
Family
ID=63207235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810652218.3A Active CN108444660B (en) | 2018-06-22 | 2018-06-22 | Nitrogen leakage fault diagnosis method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108444660B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483206A (en) * | 2000-09-15 | 2004-03-17 | Superconducting cable | |
| CN102830255A (en) * | 2012-08-23 | 2012-12-19 | 王金泽 | Smart electricity meter with function of monitoring and protecting power failure |
| CN103472389A (en) * | 2013-09-26 | 2013-12-25 | 无锡智卓电气有限公司 | Testing device for electric leakage reclosure breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5020273B2 (en) * | 2009-02-24 | 2012-09-05 | 中国電力株式会社 | Vacuum circuit breaker Vacuum tester |
-
2018
- 2018-06-22 CN CN201810652218.3A patent/CN108444660B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483206A (en) * | 2000-09-15 | 2004-03-17 | Superconducting cable | |
| CN102830255A (en) * | 2012-08-23 | 2012-12-19 | 王金泽 | Smart electricity meter with function of monitoring and protecting power failure |
| CN103472389A (en) * | 2013-09-26 | 2013-12-25 | 无锡智卓电气有限公司 | Testing device for electric leakage reclosure breaker |
Non-Patent Citations (1)
| Title |
|---|
| "西门子3AQ型断路器"N2泄漏"故障的定位及处理";邱生等;《高压电器》;20110831;第47卷(第8期);第76页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108444660A (en) | 2018-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106680700A (en) | Isolation switch intelligence diagnosis system and method thereof | |
| CN202033664U (en) | Detecting device for PLC (programmable logic controller) module channels | |
| CN105652852A (en) | Detection and monitoring system of high-voltage frequency converter power unit and mainboard thereof | |
| CN112083310A (en) | Intelligent plate testing system | |
| CN104380553A (en) | Performance test system for protective relay apparatus | |
| CN114624577A (en) | Electromagnetic relay parameter calibration method and device | |
| CN107703383A (en) | A kind of method for building up of information acquisition system fault diagnosis knowledge base | |
| CN108444660B (en) | Nitrogen leakage fault diagnosis method, device and system | |
| CN104345267A (en) | Aging and early failure detection method and detection apparatus of solid relay | |
| CN109254214A (en) | Valve base electronic device Auto-Test System and method | |
| CN109298333A (en) | Protective relaying device detection method and device | |
| CN105425048A (en) | Device and method capable of sampling and detecting multipath impedance | |
| CN107525955A (en) | Ammeter data processing method and device | |
| CN111487529A (en) | Method and device for detecting synchronism of contacts of dual-power transfer switch | |
| CN203658836U (en) | Beckhoff PLC module detection platform | |
| CN105182131A (en) | General test platform and test method | |
| CN113534004B (en) | Automatic change distributor detecting system | |
| CN215375738U (en) | Wire harness detection device and wire harness detection system | |
| Jian et al. | Automated monitoring and analysis for high voltage circuit breaker | |
| CN106597140A (en) | Earth leakage protection device overload testing device | |
| CN101957393A (en) | Method and device for displaying overall power consumption on display terminal in real time | |
| CN202837925U (en) | Timing sequence recording device for multipoint switching values of automatic control system | |
| CN112821359A (en) | Protection system for power line, circuit breaker, and protection method for power line | |
| CN107942237A (en) | Excitation plate and chip ageing monitoring system | |
| CN110888054A (en) | Electrified calibration equipment of sulfur hexafluoride density relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |