CN115469220A - Early warning monitoring analysis system of switch - Google Patents
Early warning monitoring analysis system of switch Download PDFInfo
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- CN115469220A CN115469220A CN202211141744.6A CN202211141744A CN115469220A CN 115469220 A CN115469220 A CN 115469220A CN 202211141744 A CN202211141744 A CN 202211141744A CN 115469220 A CN115469220 A CN 115469220A
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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
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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
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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Abstract
The invention discloses an early warning monitoring and analyzing system of a switch, and particularly relates to the technical field of switch detection. According to the invention, the plurality of gas sensor units and the plurality of temperature detection units are arranged at a plurality of positions in the switch, the gas data and the temperature data at the plurality of positions in the switch are acquired, the data processing unit is adopted, the acquired gas data and the temperature data are subjected to predictive analysis by adopting a predictive algorithm, the change trend of the gas data and the change trend of the temperature data are judged, the corresponding change numerical value is compared with the numerical value safety range, and the time required by exceeding the safety range is judged.
Description
Technical Field
The invention relates to the technical field of switch detection, in particular to an early warning monitoring analysis system of a switch.
Background
With the increasing expansion of power grids and the popularization and popularization of unattended management modes and comprehensive automation of power distribution rooms, the influence and loss of power failure accidents caused by switch cabinet faults on production and life are more and more large. The switch cabinet inevitably has insulation degradation formed under electric, thermal, chemical and abnormal conditions in long-term operation, so that the electric insulation strength is reduced, even faults occur, and many sudden accidents in recent years are mostly caused by partial discharge. Under the action of long-term high temperature, high voltage, vibration, moisture and the like, metal parts in the switch cabinet cause partial discharge due to latent defects in manufacturing or defects generated in operation. Practice shows that partial discharge is a main cause of insulation failure due to equipment insulation degradation.
When partial discharge occurs in the switch cabinet, the partial discharge may cause decomposition of organic insulating materials and gas insulating media in the switch cabinet and chemical reaction with oxygen in environments such as overheating and over-wetting, thereby possibly generating gases such as NO, NO2, CO2, and CO. When a fault problem exists in the switch, insulation deterioration can be caused, even the fault problem reacts with air, so that associated gas is different in different fault types, fault characteristics and generation mechanisms in the switch are associated with corresponding gas,
in the working process of the switch, poor contact is caused by frequent circuit switching, improper use of field operators and the like; or because the floating particles in the air are in key places such as arc extinguishing chambers, the insulating capacity of corresponding parts of the switch cabinet is gradually reduced in an accumulated mode; if the partial discharge is not stopped, the whole electrical equipment can be influenced, explosion can be caused in severe cases, so that the internal insulation defect of the switch cabinet needs to be detected, and accidents are reduced. The reasons for the partial discharge are mainly:
the discharge in the air gap (bubble) is caused by the presence of the air gap (bubble) inside or on the surface of the insulator. The air gaps are generated in many ways, some are left in the insulating structure during the manufacturing process, some are formed by gas evolution due to further solidification or cracking of the organic material during use, and some are formed by local cracking due to mechanical stress such as vibration, thermal expansion and contraction, etc. during use. Since the dielectric constant of a gas is always smaller than that of a solid material, the distribution of the electric field intensity is inversely proportional to the dielectric constant under an alternating electric field, so that the electric field intensity of a bubble is higher than that of the surrounding solid medium, and the breakdown field intensity of an air gap (bubble) is always much lower than that of the solid medium near atmospheric pressure, so that partial discharge can be generated in the air gap (bubble) under the action of the electric field.
If conductive impurities are present in the insulator, partial discharge also occurs at the edge of the impurities due to electric field concentration. When a conductor having a needle-point shape or a burr is formed on the surface of the conductor, an electric field is concentrated near the needle point, and partial discharge is also generated. In addition, in an electrical product, if a metal part is not successfully connected to the ground, and becomes a floating potential, or the contact between conductors is not good, a high potential difference occurs at the position, and thus partial discharge occurs.
At high voltage end, such as the end of cable, surface partial discharge is often generated along the interface between medium and air due to electric field concentration and low field strength of surface discharge, and decomposition products such as ozone and nitrogen dioxide are generated when partial discharge occurs in the switch.
The inside partial discharge condition that appears easily of switch, partial discharge's formation reason is more, and the inside trouble of switch is the slowly development formation more, the temperature risees in the twinkling of an eye rarely appears, influence the condition of normal use, if simply carry out analysis and detection to the trouble of switch through the temperature, there may be obvious hysteresis, even unable timely discovery trouble, because the deterioration gas can be produced along with corresponding partial discharge, when the condition of insulating degradation tentatively appears, fail in time to discover, lead to subsequent use to have certain potential safety hazard, can't accomplish timely processing solution to the problem, consequently, the early warning monitoring analytic system of a switch is required to solve above-mentioned problem.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an early warning monitoring analysis system of a switch, and the technical problems to be solved by the invention are as follows: the inside partial discharge condition that appears easily of switch, partial discharge's formation reason is more, and the inside trouble of switch is the slowly development formation more, the temperature risees in the twinkling of an eye rarely appears, influence the condition of normal use, if therefore if simply carry out analysis and detection to the trouble of switch through the temperature, there may be obvious hysteresis, even unable in time discover the trouble, because the deterioration gas can be produced along with corresponding partial discharge, when the condition of insulating degradation tentatively appears, fail in time to discover, lead to subsequent use to have certain potential safety hazard, can't accomplish the problem of in time solving the processing of problem.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an early warning monitoring analytic system of switch, includes the data acquisition unit, the output of data acquisition unit is connected with the input electricity of data preprocessing unit, the output of data preprocessing unit is connected with central processing unit's input electricity, central processing unit's output is connected with the input electricity of data memory.
The output of data memory is connected with the input electricity of contrast unit, the output of contrast unit is connected with the input electricity of data processing unit, the output of contrast unit is connected with the input electricity of matching unit, central processing unit's output is connected with the input electricity of contrast unit, the output of data processing unit is connected with the input electricity of warning unit.
The output of warning unit is connected with visual unit's input electricity, visual unit's input is connected with central processing unit's output electricity, visual unit's input is connected with matching unit's output electricity, warning unit's input is connected with matching unit's output electricity.
As a further scheme of the invention: the data acquisition unit comprises a plurality of gas sensor units and a plurality of temperature detection units, the gas sensor units and the temperature detection units are arranged at a plurality of positions in the switch, and the gas sensor units are used for detecting the types and the amounts of degraded gases generated at the plurality of positions in the switch;
the temperature detection unit is used for detecting the temperatures of a plurality of positions in the switch.
As a further scheme of the invention: the data preprocessing unit is used for realizing the noise reduction processing of the acquired gas detection data and the acquired temperature detection data, and the gas sensor unit and the temperature detection unit detect the inside of the switch once every five minutes.
As a further scheme of the invention: the data storage device is used for storing historical data and real-time detection data of the switch, the historical data comprises gas data and temperature data inside the switch when the switch is in an abnormal condition and a fault, real-time changes of the gas and temperature data in the development process of the abnormal condition inside the switch and switch fault factors corresponding to different gas types, and the real-time detection data is gas detection data and temperature detection data of each position inside the switch.
As a further scheme of the invention: the comparison unit is used for comparing the acquired gas data and temperature data in the switch with normal values in historical data to judge whether a new gas type appears, whether the gas content changes and whether the temperature changes.
As a further scheme of the invention: the matching unit is used for matching the type of the degraded gas generated in the switch with the switch fault reason to obtain the corresponding switch fault reason;
the matching process is as follows:
judging whether the gas data in the switch is abnormal;
acquiring historical data and acquired real-time data stored in a data memory;
matching the newly appeared gas types with the corresponding fault factors;
and sending the matching result to the warning unit and the visualization unit.
As a further scheme of the invention: the data processing unit is used for predicting and analyzing the change of gas quantity and the change of temperature in the switch, analyzing the time for the gas quantity and the temperature change to exceed a safety range, and adopting a prediction algorithm in the prediction analysis process, wherein the specific steps of the prediction algorithm are as follows:
the value of the hidden layer is calculated,
i, j and n are natural numbers,
in the formula, H i Output result, I, representing hidden layer node j i Input nodes i, W representing input layers ji Representing the weight, T, of an input layer node i to a hidden layer node j j A threshold representing a hidden layer node j;
the value of the output layer is calculated,
i, j, n are natural numbers,
in the formula, O j Representing the output result of node j of the output layer, H j Representing the value, Q, of a hidden layer node j jk Representing the weight from the hidden layer node k to the output layer node k;
error is calculated, let D be the desired value
i and j are natural numbers,
judging whether the error delta E is met;
if the error Δ E is not satisfied, modify W in bulk ji And Q jk And each time, multiplying the two weights by a coefficient which is in direct proportion to the error gradient, and entering the next iteration;
and stopping if the error deltae is satisfied.
As a further scheme of the invention: the warning unit comprises a sound alarm unit and a light alarm unit, and the sound alarm unit and the light alarm unit are used for prompting an on-duty person to check abnormal conditions.
As a further scheme of the invention: the visualization unit is used for visually displaying the acquired switch detection data, the fault matching result and the detection data prediction result, and the visualization display process comprises the following steps:
receiving a plurality of groups of real-time gas type data, gas content data and temperature data;
acquiring gas data and a switching fault factor result, a gas content change predicted value and temperature change predicted value data which are obtained by matching;
comparing and calculating a plurality of groups of real-time gas species data, gas content data and temperature data to form a chart;
and displaying the chart, the switch fault factor, the gas content change predicted value and the temperature change predicted value data.
The switch detection data form a corresponding chart when being displayed, and the chart comprises a bar chart formed by the temperature and the gas content change of a single detection position in the switch, a flow chart formed by the data of a plurality of detection positions detected at a single time in the switch, and a line chart formed by the predicted values of the gas content and the temperature at different time points.
As a further scheme of the invention: and the comparison calculation of the multiple groups of real-time gas type data, the gas content data and the temperature data comprises the respective calculation of each detection point data in the switch, and the judgment of the gas diffusion path and the source position of gas generation in the detection result for multiple times.
The gas atmosphere in the switch is atmospheric air, which has a relatively stable composition and is a mixture of mainly 78% nitrogen, 21% oxygen, 0.94% noble gas (helium, neon, hydrogen, ammonia, oxygen), 0.03% carbon dioxide, 0.03% other substances (such as water vapor, impurities, etc.). The air components are not fixed, and when the air meets strong light effect, heat effect or electromagnetic effect, complex physical and chemical reactions can occur to generate a plurality of gas substances through decomposition.
The decomposition of air mainly has the following three reasons: electron collisions, thermal effects and optical radiation. In the process of partial discharge, the temperature change near the gas generation area is small, and the influence on air decomposition can be slight; therefore, it is considered that air is mainly affected by collision and ionization of electrons during partial discharge. The nature of the air discharge is a result of charged particles, gas molecules, and electrode surfaces colliding with each other. Charged particles in the air are accelerated under the action of an electric field to obtain energy to collide with nitrogen and oxygen, N-N triple bonds and O-O bonds of the charged particles are broken, single O atoms and N atoms are ionized through collision, and then the charged particles are further reacted with other particles to generate a plurality of neutral molecules.
The air in the switch is mainly generated when partial discharge occurs
、
、
、
Decomposition products, generated after damage of solid insulating materials
、
Wait for gas, but
、
The components of the decomposition are reaction intermediate products,
the gas is a gas with a large proportion in the air and cannot be used as a characteristic component for partial discharge detection.
、
Can exist stably in air and is closely related to the partial discharge characteristics, and can be used as a main characteristic component for detecting partial discharge.
The invention has the beneficial effects that:
1. according to the invention, the plurality of gas sensor units and the plurality of temperature detection units are arranged at a plurality of positions in the switch, the gas data and the temperature data at the plurality of positions in the switch are acquired, the data processing unit is adopted, the acquired gas data and the acquired temperature data are subjected to predictive analysis by adopting a predictive algorithm, the change trend of the gas data and the change trend of the temperature data are judged, the corresponding change values are compared with the numerical value safety range, the time required by exceeding the safety range is judged, and the time required by exceeding the safety range can be used for prompting related workers to find corresponding data conditions and fault danger conditions in time, so that faults and potential safety hazards can be found and solved in advance;
2. according to the invention, by adopting the data memory, the matching unit and the warning unit, when the degraded gas is detected in the switch, the degraded gas is compared with the corresponding fault type, and the fault factor is analyzed and judged, so that the relevant working personnel can conveniently and visually know the fault type, the fault can be conveniently and accurately maintained in time, the time required by fault removal is greatly saved, and the maintenance efficiency and effect of the relevant personnel are increased;
3. according to the invention, by adopting the visualization unit, multiple groups of real-time gas species data, gas content data and temperature data are compared and calculated, including respective calculation of each detection point data in the switch, the gas diffusion path and the source position of gas generation in the detection result for multiple times are judged, a flow diagram is formed, and the obtained switch detection data, fault matching result and detection data prediction result are visually displayed, so that the source and diffusion path of the generated gas can be obviously judged, the fault source can be conveniently judged, a worker can conveniently find out a fault point quickly, and the fault can be overhauled.
Drawings
FIG. 1 is a schematic diagram of the system connection of the present invention;
FIG. 2 is a schematic diagram of the interior of a data acquisition unit according to the present invention;
in the figure: 1. a data acquisition unit; 11. a gas sensor unit; 12. a temperature detection unit; 2. a data preprocessing unit; 3. a central processing unit; 4. a data memory; 5. a matching unit; 6. a data processing unit; 7. a warning unit; 8. a visualization unit; 9. and a comparison unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides an early warning monitoring analysis system for a switch, which includes a data acquisition unit 1, wherein an output end of the data acquisition unit 1 is electrically connected to an input end of a data preprocessing unit 2, an output end of the data preprocessing unit 2 is electrically connected to an input end of a central processing unit 3, and an output end of the central processing unit 3 is electrically connected to an input end of a data storage 4.
The output of data memory 4 is connected with contrast unit 9's input electricity, and contrast unit 9's output is connected with data processing unit 6's input electricity, and contrast unit 9's output is connected with matching unit 5's input electricity, and central processing unit 3's output is connected with contrast unit 9's input electricity, and data processing unit 6's output is connected with warning unit 7's input electricity.
The output of warning unit 7 is connected with visual unit 8's input electricity, and visual unit 8's input is connected with central processing unit 3's output electricity, and visual unit 8's input is connected with matching unit 5's output electricity, and warning unit 7's input is connected with matching unit 5's output electricity.
The data acquisition unit 1 comprises a plurality of gas sensor units 11 and a plurality of temperature detection units 12, the gas sensor units 11 and the temperature detection units 12 are arranged at a plurality of positions in the switch, and the gas sensor units 11 are used for detecting the types and the amounts of degraded gases generated at the plurality of positions in the switch;
the temperature detection unit 12 is used to detect temperatures at a plurality of positions inside the switch.
The data preprocessing unit 2 is used for realizing noise reduction processing on the acquired gas detection data and temperature detection data, and the gas sensor unit 11 and the temperature detection unit 12 detect the interior of the switch once every five minutes.
The data storage 4 is used for storing historical data and real-time detection data of the switch, the historical data comprises gas data and temperature data inside the switch when the switch is in an abnormal condition and a fault, real-time changes of the gas and temperature data in the development process of the abnormal condition inside the switch and switch fault factors corresponding to different gas types, and the real-time detection data is gas detection data and temperature detection data of each position inside the switch.
The comparison unit 9 is used for comparing the acquired gas data and temperature data inside the switch with normal values in historical data, and judging whether a new gas type appears, whether the gas content changes and whether the temperature changes.
The matching unit 5 is used for matching the type of the degraded gas generated in the switch with the switch fault reason to obtain the corresponding switch fault reason;
the matching process is as follows:
after the gas data in the switch is judged to be abnormal;
acquiring historical data and acquired real-time data stored in a data memory 4;
matching the newly appeared gas types with corresponding fault factors;
and sending the matching result to the warning unit 7 and the visualization unit 8.
The data processing unit 6 is used for predicting and analyzing the change of the gas quantity and the change of the temperature in the switch, analyzing the time for the gas quantity and the temperature change to exceed the safety range, adopting a prediction algorithm in the prediction analysis process, and the specific steps of the prediction algorithm are as follows:
the value of the hidden layer is calculated,
i, j, n are natural numbers,
in the formula, H i Output result, I, representing hidden layer node j i Input node i, W representing input layer ji Representing the weight, T, of an input layer node i to a hidden layer node j j A threshold value representing a hidden layer node j;
the value of the output layer is calculated,
i, j, n are natural numbers,
in the formula, O j Representing the output result of node j of the output layer, H j Representing the value, Q, of a hidden layer node j jk Representing hidden layer node k to output layer nodeThe weight of the point k;
calculating the error, let D be the expected value
i and j are natural numbers,
judging whether the error delta E is met;
if the error Δ E is not satisfied, modify W in bulk ji And Q jk And each time, multiplying the two weights by a coefficient which is in direct proportion to the error gradient, and entering the next iteration;
and stopping if the error deltae is satisfied.
The warning unit 7 comprises a sound alarm unit and a light alarm unit, and the sound alarm unit and the light alarm unit are used for prompting an operator on duty to check abnormal conditions.
The visualization unit 8 is used for visually displaying the acquired switch detection data, the fault matching result and the detection data prediction result, and the visualization display process is as follows:
receiving a plurality of groups of real-time gas type data, gas content data and temperature data;
acquiring gas data and a switching fault factor result, a gas content change predicted value and temperature change predicted value data which are obtained by matching;
comparing and calculating a plurality of groups of real-time gas type data, gas content data and temperature data to form a chart;
and displaying the chart, the switch fault factor, the gas content change predicted value and the temperature change predicted value data.
When the switch detection data are displayed, a corresponding chart is formed, and the chart comprises a bar chart formed by the temperature and the gas content change of a single detection position in the switch, a flow chart formed by the data of a plurality of detection positions in the switch in a single detection mode, and a line chart formed by the predicted values of the gas content and the temperature at different time points.
And comparing and calculating the multiple groups of real-time gas species data, gas content data and temperature data, including respectively calculating the data of each detection point in the switch, and judging the gas diffusion path and the source position of gas generation in the detection result for multiple times.
The gas atmosphere in the switch is atmospheric air, the composition content of which is relatively stable, and which is a mixture mainly composed of 78% of nitrogen, 21% of oxygen, 0.94% of rare gases (helium, neon, hydrogen, ammonia, oxygen), 0.03% of carbon dioxide, and 0.03% of other substances (such as water vapor, impurities, etc.). The components of the air are not fixed, and when the air meets strong light effect, thermal effect or electromagnetic effect, complex physical and chemical reaction can occur, and various gas substances are generated through decomposition.
The decomposition of air mainly has the following three reasons: electron collisions, thermal effects and optical radiation. In the process of partial discharge, the temperature change near the gas generation area is small, and the influence on the air decomposition can be reduced; therefore, it is considered that air is mainly affected by collision ionization of electrons during partial discharge. The nature of the air discharge is a result of charged particles, gas molecules, and electrode surfaces colliding with each other. Charged particles in the air are accelerated under the action of an electric field to obtain energy to collide with nitrogen and oxygen, an N-N triple bond and an O-O bond of the charged particles are broken, a single O atom and a single N atom are ionized through collision, and then the charged particles further react with other particles to generate a plurality of neutral molecules.
The air in the switch is mainly generated when partial discharge occurs
、
、
、
Decomposition products, generated after damage of solid insulating materials
、
Wait for gas, but
、
The components of the decomposition are reaction intermediate products,
the gas is a gas with a large proportion in the air and cannot be used as a characteristic component for partial discharge detection.
、
Can exist stably in air and is closely related to the partial discharge characteristics, and can be used as a main characteristic component for detecting partial discharge.
In summary, the present invention:
according to the invention, the plurality of gas sensor units 11 and the plurality of temperature detection units 12 are arranged at a plurality of positions in the switch, gas data and temperature data at a plurality of positions in the switch are acquired, the data processing unit 6 is adopted, the acquired gas data and temperature data are subjected to predictive analysis by adopting a predictive algorithm, the change trend of the gas data and the change trend of the temperature data are judged, the corresponding change numerical values are compared with the numerical value safety range, and the time required by exceeding the safety range is judged.
According to the invention, by adopting the data storage 4, the matching unit 5 and the warning unit 7, when the degraded gas is detected in the switch, the degraded gas is compared with the corresponding fault type, and the fault factors are analyzed and judged, so that the relevant workers can conveniently and visually know the fault type, the maintenance of the fault can be conveniently and accurately carried out in time, the time required for removing the fault is greatly saved, and the maintenance efficiency and effect of the relevant workers are improved.
According to the invention, by adopting the visualization unit 8, a plurality of groups of real-time gas species data, gas content data and temperature data are compared and calculated, including respective calculation of each detection point data in the switch, the positions of a gas diffusion path and a gas generation source in a plurality of detection results are judged, a flow chart is formed, and the obtained switch detection data, a fault matching result and a detection data prediction result are visually displayed, so that the gas generation source and diffusion path can be obviously judged, the fault source can be conveniently judged, a worker can conveniently and quickly find a fault point, and the fault can be overhauled.
Secondly, the method comprises the following steps: in the drawings of the disclosed embodiment of the invention, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and the same embodiment and different embodiments of the invention can be combined mutually under the condition of no conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an early warning monitoring analytic system of switch, includes data acquisition unit (1), its characterized in that: the output end of the data acquisition unit (1) is electrically connected with the input end of the data preprocessing unit (2), the output end of the data preprocessing unit (2) is electrically connected with the input end of the central processing unit (3), and the output end of the central processing unit (3) is electrically connected with the input end of the data memory (4);
the output end of the data memory (4) is electrically connected with the input end of a comparison unit (9), the output end of the comparison unit (9) is electrically connected with the input end of a data processing unit (6), the output end of the comparison unit (9) is electrically connected with the input end of a matching unit (5), the output end of the central processing unit (3) is electrically connected with the input end of the comparison unit (9), and the output end of the data processing unit (6) is electrically connected with the input end of a warning unit (7);
the output of warning unit (7) is connected with the input electricity of visual unit (8), the input of visual unit (8) is connected with the output electricity of central processing unit (3), the input of visual unit (8) is connected with the output electricity of matching unit (5), the input of warning unit (7) is connected with the output electricity of matching unit (5).
2. The early warning monitoring and analyzing system of the switch as claimed in claim 1, wherein: the data acquisition unit (1) comprises a plurality of gas sensor units (11) and a plurality of temperature detection units (12), the plurality of gas sensor units (11) and the plurality of temperature detection units (12) are arranged at a plurality of positions in the switch, and the gas sensor units (11) are used for detecting the types and the amounts of degraded gases generated at the plurality of positions in the switch;
the temperature detection unit (12) is used for detecting the temperatures of a plurality of positions in the switch.
3. The early warning monitoring and analyzing system of the switch as claimed in claim 2, wherein: the data preprocessing unit (2) is used for realizing noise reduction processing on acquired gas detection data and temperature detection data, and the gas sensor unit (11) and the temperature detection unit (12) detect the interior of the switch once every five minutes.
4. The warning monitoring and analyzing system of the switch according to claim 1, wherein: the data storage device (4) is used for storing historical data and real-time detection data of the switch, the historical data comprises gas data and temperature data inside the switch when the switch is in an abnormal condition and a fault, real-time changes of the gas and temperature data in the development process of the abnormal condition inside the switch and switch fault factors corresponding to different gas types, and the real-time detection data are gas detection data and temperature detection data of all positions inside the switch.
5. The warning monitoring and analyzing system of the switch according to claim 4, wherein: the comparison unit (9) is used for comparing the acquired gas data and temperature data inside the switch with normal values in historical data to judge whether a new gas type appears, whether the gas content changes or not and whether the temperature changes or not.
6. The warning monitoring and analyzing system of the switch according to claim 5, wherein: the matching unit (5) is used for matching the type of the degraded gas generated in the switch with the switch fault reason to obtain the corresponding switch fault reason.
7. The warning monitoring and analyzing system of the switch according to claim 6, wherein: the data processing unit (6) is used for performing predictive analysis on the change of the gas quantity inside the switch and the change of the temperature, analyzing the time for the gas quantity and the temperature to exceed the safety range, and adopting a predictive algorithm in the predictive analysis process.
8. The early warning monitoring and analyzing system of the switch as claimed in claim 1, wherein: the warning unit (7) comprises a sound alarm unit and a light alarm unit, and the sound alarm unit and the light alarm unit are used for prompting a person on duty to check abnormal conditions.
9. The warning monitoring and analyzing system of the switch according to claim 7, wherein: the visualization unit (8) is used for visually displaying the acquired switch detection data, the fault matching result and the detection data prediction result.
10. The warning monitoring and analyzing system of the switch according to claim 1, wherein: the switch detection data form a corresponding chart when being displayed, and the chart comprises a bar chart formed by the temperature and the gas content change of a single detection position in the switch, a flow chart formed by the data of a plurality of detection positions detected at a single time in the switch, and a line chart formed by the predicted values of the gas content and the temperature at different time points.
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| CN202211141744.6A CN115469220A (en) | 2022-09-20 | 2022-09-20 | Early warning monitoring analysis system of switch |
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| CN202211141744.6A CN115469220A (en) | 2022-09-20 | 2022-09-20 | Early warning monitoring analysis system of switch |
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