CN116845822B - Anti-interference intelligent residual current action protector system - Google Patents
Anti-interference intelligent residual current action protector system Download PDFInfo
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- 230000009471 action Effects 0.000 title abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 107
- 230000002159 abnormal effect Effects 0.000 claims abstract description 54
- 238000012216 screening Methods 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims description 20
- 238000000605 extraction Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 description 5
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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Abstract
The invention relates to the field of electric power safety, in particular to an anti-interference intelligent residual current action protector system, which comprises a first detection module, a second detection module and a third detection module, wherein the first detection module is used for detecting a circuit phase difference and acquiring a first abnormal position and a first residual current in a circuit; the display module displays and alarms the abnormal position of the circuit; the screening module removes interference current from the first residual current to obtain a second residual current; the second detection module detects a second residual current; the first control module is immediately started to protect the circuit when the second residual current data is larger than the second standard residual current data; the second control module takes different measures for the second control module according to the first image when the second residual current data is smaller than the second standard residual current data; the third detection module detects the circuit when the circuit is disconnected. According to the invention, the accuracy of the system in working is improved by arranging the first control module and the second control module, and the efficiency of circuit protection is improved.
Description
Technical Field
The invention relates to the field of electric power safety, in particular to an anti-interference intelligent residual current action protector system.
Background
As the energy foundation of the modern civilization society, the electric power is not only the development power of national economy, but also the public utility for social service, and the factory, mine, enterprise production, drought resistance and waterlogging discharge, grain processing and the like are all kept away from electricity, so that the sufficient electric power supply has become an important guarantee for the economic development of the country and region. The safety and health condition of the electric power facilities are not only related to the power supply and utilization order, but also directly influence the public safety of society. The electric power facility is ensured not to be damaged by external force, uninterrupted, safe and stable power generation is realized, and the electric power facility has very important significance in all aspects of politics, economy, people life and the like.
The patent document with the publication number of CN109193560A discloses an anti-interference and repairable dual-channel leakage protector, which comprises a power supply voltage stabilizing circuit, a first channel reference circuit, a first channel leakage signal detector, a second channel reference circuit, a second channel leakage signal detector, an anti-interference module circuit, a logic processor and a latch output circuit, wherein the power supply voltage stabilizing circuit provides working voltages for the first channel reference circuit, the first channel leakage signal detector, the second channel reference circuit, the second channel leakage signal detector and the latch output circuit, a first output end of the first channel reference circuit is connected with a positive input end of the first channel leakage signal detector, a second output end of the first channel leakage signal detector is connected with a bias current end of the first channel leakage signal detector, a negative input end of the first channel leakage signal detector is input with a reference voltage provided by the first channel reference circuit, a negative input end of the second channel leakage signal detector is input with a leakage detection signal, a positive input end of the first channel leakage signal detector is input with a reference voltage provided by the first channel reference circuit, and a positive input end of the second channel leakage signal detector is connected with a second input end of the logic processor, and a second output end of the second channel leakage signal detector is connected with a logic processor.
In the prior art, the anti-interference residual current action protector system adopts the same disconnection mode according to different current values and different numerical changes in the process of protecting the circuit, so that the problem of low efficiency in protecting the circuit is caused.
Disclosure of Invention
Therefore, the invention provides an anti-interference intelligent residual current action protector system, which can solve the problem of low circuit protection efficiency caused by adopting the same disconnection mode for circuit protection treatment.
To achieve the above object, the present invention provides an anti-interference intelligent residual current action protector system, comprising: comprising the following steps:
the first detection module is used for detecting the phase difference of the whole circuit and acquiring a first abnormal position and a first residual current of the circuit;
the display module is connected with the first detection module and used for displaying the first abnormal position and giving an alarm;
the screening module is connected with the display module and used for detecting the first residual current to obtain first residual current data, if the first residual current data is larger than or equal to first standard residual current data, the first residual current removes interference current through the filter circuit, and if the first residual current data is smaller than the first standard residual current data, the first residual current does not pass through the filter circuit, and the final output result is second residual current;
The second detection module is connected with the screening module and used for detecting the second residual current to obtain second residual current data, and comparing the second residual current data with second standard residual current data to obtain a first comparison result and a second comparison result;
the first control module is connected with the second detection module and used for starting the first control module to carry out disconnection protection on the circuit according to the first comparison result;
the second control module is connected with the second detection module and used for carrying out disconnection or non-disconnection protection on the circuit according to a first image drawn according to the change condition of the second residual current data in a first time period under the condition of the second comparison result;
and the third detection module is used for detecting the current of the first abnormal position when the circuit switch is disconnected.
Further, the first detection module comprises a plurality of first detection units, a first calculation unit, a first identification unit and a first extraction unit;
the first detection units are respectively arranged on the whole circuit at intervals of 10cm and are used for detecting current values of all positions on the circuit;
The first calculation unit is connected with the plurality of first detection units and is used for carrying out phase difference calculation on current values of the adjacent first detection units to obtain a plurality of first phase difference data;
the first recognition unit is connected with the first calculation unit, and first standard phase difference data are arranged in the first recognition unit and used for comparing a plurality of first phase difference data with the first standard phase difference data to obtain a plurality of comparison results;
the first extraction unit is connected with the first identification unit and is used for extracting the maximum value in the comparison results, the circuit position corresponding to the maximum value is used as a first abnormal position, and the current flowing through the first abnormal position is used as a first residual current.
Further, the screening module comprises a first storage unit, a second detection unit, a second identification unit and a filter circuit;
the first storage unit stores first standard residual current data;
the second detection unit is connected with the first storage unit and is used for detecting the magnitude of the first residual current, and the detection result is used as first residual current data;
The second identification unit is connected with the second detection unit and is used for comparing the first residual current data with the first standard residual current data, if the first residual current data is larger than or equal to the first standard residual current data, the filter circuit is started, and if the first residual current data is smaller than or equal to the first standard residual current data, the filter circuit is not started;
the filter circuit is connected with the second identification unit, is arranged at two sides of the first abnormal position and is used for removing interference current from the first residual current, if the filter circuit is started, the first residual current after the interference current is removed is used as second residual current, and if the filter circuit is not started, the first residual current is used as second residual current.
Further, the filter circuit comprises a first control unit, a first switch and a filter;
the first control unit is connected with the second identification unit and used for controlling the opening and closing of the first switch;
the first switch is connected with the first control unit, when the first residual current data is larger than or equal to the first standard residual current data, the first control unit controls the first switch to be closed, so that the first residual current flows through the filter, interference current in the first residual current is removed, and when the first residual current data is smaller than or equal to the first standard residual current data, the first control unit controls the first switch to be opened, so that the first residual current still flows through the first abnormal position;
The filter is connected with the first switch and is used for removing the interference current from the first residual current.
Further, the second detection module comprises a second storage unit, a third detection unit and a third identification unit;
the second storage unit is provided with second standard residual current data;
the third detection unit is connected with the second storage unit and is used for detecting the second residual current and acquiring current data of the second residual current as second residual current data;
the third recognition unit is connected with the third detection unit and is used for comparing the second residual current data with the second standard residual current data to obtain a first comparison result and a second comparison result, wherein the first comparison result is that the second residual current data is larger than or equal to the second standard residual current data, and the second comparison result is that the second residual current data is smaller than the second standard residual current data.
Further, the first control module comprises a second control unit and a first protection unit;
the second control unit is connected with the third identification unit and used for starting a first protection unit according to the first comparison result;
The first protection unit is arranged at the circuit switch and connected with the second control unit to disconnect the circuit switch.
Further, the second control module comprises a fourth detection unit, a second extraction unit, a third control unit, a second calculation unit and a second protection unit, and is used for starting the second control module according to the second comparison result;
the fourth detection unit is used for detecting the data change condition of the second residual current data in the first time period;
the second extraction unit is connected with the fourth detection unit and is used for extracting the data change of the second residual current in the first time period, the extracted data are used as a plurality of first data, the plurality of first data are drawn into an image, and the image is used as a first image;
the third control unit is connected with the second extraction unit, if the slope of the first image is smaller than or equal to 0.2, the third control unit is not started, and if the slope of the first image is larger than 0.2, instruction information is sent to the third control unit according to the time when the second residual current data reaches the second standard residual current;
The second calculating unit is connected with the second extracting unit and is used for calculating the time of the second residual current data reaching the second standard residual current according to the first image, and taking a calculation result as a first moment;
the second protection unit is arranged at the circuit switch and is respectively connected with the third control unit and the second calculation unit and is used for receiving instruction information of the third control unit at the first moment so that the second protection unit can disconnect the circuit switch according to the instruction information.
Further, the second calculation unit calculates the three points on the first image as (x) 1 ,y 1 )，(x 2 ,y 2 ) And (x) 3 ,y 3 ) The x is 1 ，x 2 ，x 3 For any three data in the first data, y is as follows 1 ，y 2 ，y 3 Respectively, the second residual current data reaches x 1 ，x 2 ，x 3 The corresponding time, which is taken into the function y=ax 2 The values of a, b and c are obtained by +bx+c, wherein a, b and c are constants, x represents the data of the second residual current, y represents the time of reaching the corresponding residual current data, and the value of the second standard residual current is added to the function to obtain the corresponding time y t 。
Further, the third detection module includes a plurality of fifth detection units, and the plurality of fifth detection units are respectively disposed at the first abnormal position and the positions adjacent to the first abnormal position, so as to determine the current condition of the first abnormal position after the first control module or the second control module turns off the circuit switch.
Further, the display module comprises a display unit and an alarm unit;
the display unit is connected with the first detection module and used for displaying the first abnormal position in a marked mode;
the alarm unit is connected with the display unit, and sends out an alarm signal after the first abnormal position is marked.
Compared with the prior art, the invention has the advantages that the first detection module is used for detecting the circuit, judging the abnormal position of the circuit, for the anti-interference intelligent residual current action protector system to directly work on the position, shortening the working time, improving the working efficiency of the anti-interference intelligent residual current action protector system, detecting the first residual current through the screening module, eliminating the influence of the interference current, improving the accuracy of the anti-interference intelligent residual current action protector system in working, detecting the second residual current through the second detection module, comparing with the second standard residual current data, adopting different control modules to implement different protection schemes for the circuit, improving the accuracy of the anti-interference intelligent residual current action protector system in working, reducing the consumption of circuit energy, immediately cutting off the circuit through the first control module, protecting the circuit, ensuring the safety hazard of the protection circuit, completely cutting off the circuit through the second control module, completely cutting off the circuit through the protection module, simultaneously ensuring the safety of the safety protection module, and completely cutting off the circuit, ensuring the safety of the circuit, and simultaneously ensuring the safety of the protection module and completely cutting off the circuit.
In particular, the circuit is detected by the first detection units, so that each part of the circuit is detected, the integrity of detection of the circuit is guaranteed, the accuracy of detection results is improved, the calculation time is shortened by the first calculation units for calculating the phase difference between two adjacent sides of the first detection units, the working efficiency of the first detection module is improved, the first identification units are arranged, first phase difference data are compared with first standard phase difference data, a plurality of comparison results are obtained, a plurality of abnormal positions are obtained, the first extraction units are arranged for determining the first abnormal positions, the subsequent working process of the anti-interference intelligent residual current action protector system is facilitated, and the working efficiency is improved.
In particular, by setting the first storage unit, it is convenient to judge whether the circuit has interference current or not, so that the judging result is accurate, by setting the second detection unit to detect the first residual current, so that the detecting result is accurate, by setting the second identification unit to judge whether the first residual current contains the interference current or not, so that whether the filter circuit is started or not is based, the consumption of circuit energy is avoided, the accuracy of the second residual current is ensured, the filter circuit is favorable for eliminating the interference current, and the accuracy of subsequent detection and the accuracy of the whole system operation are ensured.
In particular, by setting the first control unit, the opening and closing of the filter circuit are controlled, so that the consumption of circuit energy is avoided, and by setting the filter, the interference current contained in the first residual current is eliminated, so that the accuracy of the operation process of the anti-interference intelligent residual current action protector system is ensured.
In particular, the second standard residual current data is stored by the second storage module, so that whether the second residual current is harmful to the circuit is judged, and the third detection unit is arranged, so that the second residual current data is accurate, the comparison result of the third identification unit is accurate, and the stability and accuracy of the whole system are ensured.
In particular, by setting the second control unit, the first control module is timely controlled, so that the working efficiency of the first control module is improved, and by setting the first protection unit, the circuit is timely protected, the safety of the circuit is improved, the energy consumption of the circuit is reduced, and the damage caused by circuit leakage is avoided.
In particular, by setting the fourth detection unit, the data of the second residual current in the first time period is accurately detected, the accuracy of the detection result is ensured, the second extraction unit is set to obtain the first image, so that the change of the second residual current in the first time period is clear and visible, the observation is convenient, the time cost is saved, the working efficiency of the second control module is improved, the second control unit is set to control the first image, different control schemes are adopted under different conditions, the resource waste of the circuit is avoided, the second calculation unit is set to accurately predict the starting time of the second protection unit, the energy consumption of the circuit is avoided, and the safety of the circuit is ensured.
In particular, by arranging a plurality of fifth detection units to detect the first abnormal position when the circuit is disconnected, the circuit is determined to be completely disconnected, so that the damage generated when the circuit is not completely disconnected is avoided, and the safety of the circuit is ensured.
In particular, the display unit is arranged to display and alarm the first abnormal position in the circuit, so that the abnormal position can be conveniently observed, and the real-time performance of the abnormal position observation is improved.
Drawings
FIG. 1 is a block diagram of an anti-interference intelligent residual current operated protector system according to an embodiment of the present invention;
FIG. 2 is a block diagram of another embodiment of an anti-interference intelligent residual current operated protector system according to the present invention;
FIG. 3 is a block diagram of a filter circuit of an anti-interference intelligent residual current operated protector system according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a filter circuit of an anti-interference intelligent residual current operated protector system according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, the present invention provides an anti-interference intelligent residual current operation protector system, which comprises: the first detection module 10 is configured to perform phase difference detection on the entire circuit, and obtain a first abnormal position and a first residual current of the circuit;
the display module 20 is connected with the first detection module 10 and is used for displaying the first abnormal position and giving an alarm;
the screening module 30 is connected to the display module 20, and is configured to detect the first residual current to obtain first residual current data, remove the interference current by the filtering circuit if the first residual current data is greater than or equal to the first standard residual current data, and not pass through the filtering circuit if the first residual current data is less than the first standard residual current data, and finally output the second residual current;
The second detection module 40 is connected with the screening module 30 and is used for detecting the second residual current to obtain second residual current data, and comparing the second residual current data with second standard residual current data to obtain a first comparison result and a second comparison result;
the first control module 50 is connected to the second detection module 40, and is configured to start the first control module to perform disconnection protection on the circuit according to the first comparison result;
the second control module 60 is connected to the second detection module 40, and is configured to perform disconnection or disconnection protection on the circuit according to a first image drawn according to a change condition of the second residual current data in the first period under the second comparison result condition;
the third detection module 70 is configured to detect a current at the first abnormal position when the circuit switch is turned off.
Specifically, the working time is shortened by setting the first detection module 10, the working efficiency of the anti-interference type intelligent residual current operation protector system is improved, the observation and the determination of the first abnormal position are facilitated by the display module 20, the working efficiency of the anti-interference type intelligent residual current operation protector system is improved, the influence of the interference current is eliminated by setting the screening module 30, the accuracy of the system in working is improved by setting the second detection module 40, the consumption of circuit energy sources is reduced, the damage caused by residual current is reduced by setting the first control module 50, the safety of a circuit is protected, the consumption in the circuit is reduced by setting the second control module 60, the guarantee is also provided for the circuit safety problem, the circuit which is disconnected is completely determined by setting the screening module 30, and the damage caused by the incomplete disconnection of the circuit is prevented.
Specifically, the first detection module 10 detects the circuit, determines the first abnormal position and the first residual current, the display module 20 displays the first abnormal position in real time and alarms, the first residual current removes the interference current through the screening module 30 to obtain the second residual current, the second residual current is detected by the second detection module 40, when the second residual current data is greater than the second standard residual current data, the first control module 50 is started, when the second residual current data is greater than the second standard residual current data, the second control module 60 is started, and the third detection unit 60 monitors whether the circuit breaking is complete.
Referring to fig. 2, the first detection module 10 includes a plurality of first detection units 11, a first calculation unit 12, a first identification unit 13, and a first extraction unit 14;
the first detection units 11 are respectively arranged on the whole circuit at intervals of 10cm and are used for detecting current values of all positions on the circuit;
the first calculating unit 12 is connected with the plurality of first detecting units 11, and is configured to perform phase difference calculation on current values of adjacent first detecting units to obtain a plurality of first phase difference data;
The first recognition unit 13 is connected with the first calculation unit 12, first standard phase difference data are arranged in the first recognition unit, and difference comparison is performed on a plurality of pieces of first phase difference data and the first standard phase difference data to obtain a plurality of comparison results;
the first extracting unit 14 is connected to the first identifying unit 13, and is configured to extract a maximum value from the plurality of comparison results, take the circuit position corresponding to the maximum value as a first abnormal position, and take a current flowing through the first abnormal position as a first residual current.
Specifically, by setting a plurality of first detection units 11 to detect the circuit, each part of the circuit is detected, the integrity of circuit detection is guaranteed, the accuracy of the detection result is improved, by setting the first calculation unit 12 to calculate the phase difference between two adjacent sides of the first detection unit 11, the calculation time is shortened, the working efficiency of the first detection module is improved, by setting the first identification unit 13, first phase difference data is compared with first standard phase difference data, a plurality of comparison results are obtained, a plurality of abnormal positions are obtained, the first extraction unit 14 is set to determine the first abnormal positions, the subsequent working process of the anti-interference intelligent residual current action protector system is facilitated, and the working efficiency is improved.
Specifically, the plurality of first detection units 11 perform overall detection on the circuit to obtain a plurality of data, the first calculation unit 12 calculates the data of the adjacent first detection units 11 to obtain a plurality of first phase difference data, the plurality of first phase difference data are compared with the first standard phase difference data, and the position corresponding to the position with the largest difference is used as the first abnormal position.
Specifically, the screening module 30 includes a first storage unit 31, a second detection unit 32, a second identification unit 33, and a filter circuit 34;
the first storage unit 31 stores first standard residual current data;
the second detecting unit 32 is connected to the first storing unit 31, and is configured to detect the magnitude of the first residual current, and the detection result is used as first residual current data;
the second identifying unit 33 is connected to the second detecting unit 32, and is configured to compare the first residual current data with the first standard residual current data, and if the first residual current data is greater than the first standard residual current data, the filter circuit is started, and if the first residual current data is less than or equal to the first standard residual current data, the filter circuit is not started;
The filter circuit 34 is connected to the second identifying unit 33, and is disposed at two sides of the first abnormal position, and is configured to remove the interference current from the first residual current, if the filter circuit is started, the first residual current after the interference current is removed is used as the second residual current, and if the filter circuit is not started, the first residual current is used as the second residual current.
Specifically, by setting the first storage unit 31, it is convenient to determine whether there is an interference current in the circuit, so that the determination result is accurate, by setting the second detection unit 32 to detect the first residual current, so that the detection result is accurate, by setting the second identification unit 33 to determine whether the first residual current contains the interference current, so that whether the filter circuit 34 is started or not is based, consumption of circuit energy is avoided, and accuracy of the second residual current is ensured, by setting the filter circuit 34, elimination of the interference current is facilitated, and accuracy of subsequent detection and accuracy of operation of the whole system are ensured.
Specifically, the first residual current obtains the first residual current data through the second detecting unit 32, and compares the first residual current data with the first standard residual current data in the first storing unit 31, when the first residual current data is greater than the first standard residual current data, the filter circuit 34 is started, and when the first residual current data is less than or equal to the first standard residual current data, the filter circuit 34 is not started.
Referring to fig. 3, the filter circuit 34 includes a first control unit 341, a first switch 342, and a filter 343;
the first control unit 341 is connected to the second identification unit 33, and is configured to control the start and stop of the filter circuit 34;
the first switch 342 is connected to the first control unit 341, when the first residual current data is greater than the first standard residual current data, the first control unit 341 controls the first switch 342 to be closed, so that the first residual current flows through the filter 343, the interference current in the first residual current is removed, and when the first residual current data is less than or equal to the first standard residual current data, the first control unit 341 controls the first switch 342 to be opened, so that the first residual current still flows through the first abnormal position;
the filter 343 is connected to the first switch 342, and is configured to remove the interference current from the first residual current.
Referring to fig. 4, in the drawing, U1 is a circuit power supply, S2 is a circuit switch, R1, R2 and L1 are loads on the circuit, S1 is the first switch of the filter circuit, R3 is a filter, if the R2 position is a first abnormal position, the first control unit 341 controls the first switch S1 to be closed when the first residual current data is greater than the first standard residual current data, so that the first residual current flows into the filter circuit 34, the interference current is removed through the filter R3, and when the first residual current data is less than or equal to the first standard residual current data, the first switch S1 is opened, and the first residual current still flows through the first abnormal position.
Specifically, the second detection module 40 includes a second storage unit 41, a third detection unit 42, and a third identification unit 43;
the second memory unit 41 is provided with second standard residual current data;
the third detecting unit 42 is connected to the second storage unit 41, and is configured to detect the second residual current, and obtain current data of the second residual current as the second residual current data;
the third identifying unit 43 is connected to the third detecting unit 42, and configured to compare the second residual current data with the second standard residual current data, and obtain a first comparison result and a second comparison result, where the first comparison result is that the second residual current data is greater than or equal to the second standard residual current data, and the second comparison result is that the second residual current data is less than the second standard residual current data.
Specifically, the second storage module 31 is configured to store the second standard residual current data, so as to determine whether the second residual current is harmful to the circuit, and the third detection unit 42 is configured to accurately determine the second residual current data, so that the comparison result of the third identification unit 43 is accurate, thereby ensuring the stability and accuracy of the whole system.
Specifically, the second residual current is detected by the third detecting unit 42 to obtain detection data, and the third identifying unit 43 compares the second residual current data with the second standard residual current data.
Specifically, the first control module 50 includes a second control unit 51 and a first protection unit 52;
the second control unit 51 is connected to the third recognition unit 43, and is configured to activate the first protection unit 52 according to the first comparison result;
the first protection unit 52 is disposed at the circuit switch and connected to the second control unit 51, so as to disconnect the circuit switch.
Specifically, by setting the second control unit 51, the first control module 50 is timely controlled, so that the working efficiency of the first control module 50 is improved, by setting the first protection unit 52, the circuit is timely protected, the safety of the circuit is improved, the energy consumption of the circuit is reduced, and the damage caused by the leakage of the circuit is avoided.
Specifically, when the second residual current data is greater than the second standard residual current data, the second control unit 51 is immediately started, and the second control unit 51 immediately turns the circuit switch to the on state by the first protection unit 52.
Specifically, the second control module 60 includes a fourth detection unit 61, a second extraction unit 62, a third control unit 63, a second calculation unit 64, and a second protection unit 65, to activate the second control module according to the second comparison result;
the fourth detecting unit 61 is configured to detect a data change condition of the second residual current data in a first period of time;
the second extracting unit 62 is connected to the fourth detecting unit 61, and is configured to extract a data change of the second residual current in the first period, take the extracted data as a plurality of first data, and draw a plurality of first data into an image, where the image is taken as a first image;
the third control unit 63 is connected to the second extraction unit 62, if the slope of the first image is less than or equal to 0.2, the third control unit 63 is not started, and if the slope of the first image is greater than 0.2, instruction information is sent to the third control unit 63 according to the time when the second residual current data reaches the second standard residual current;
a second calculating unit 64 is connected to the second extracting unit 62, and is configured to calculate, according to the first image, a time when the second residual current data reaches the second standard residual current, and take a calculation result as a first time;
The second protection unit 65 is disposed at the switch, and is respectively connected to the third control unit 63 and the second calculation unit 64, so as to receive the instruction information of the third control unit at the first moment, so that the second protection unit turns off the circuit switch according to the instruction information.
Specifically, the second calculation unit 64 calculates the three points on the first image as (x 1 ,y 1 )，(x 2 ,y 2 ) And (x) 3 ,y 3 ) The x is 1 ，x 2 ，x 3 For any three data in the first data, y is as follows 1 ，y 2 ，y 3 Respectively, the second residual current data reaches x 1 ，x 2 ，x 3 The corresponding time, which is taken into the function y=ax 2 The values of a, b and c are obtained by +bx+c, wherein a, b and c are constants, x represents the data of the second residual current, y represents the time of reaching the corresponding residual current data, and the value of the second standard residual current is added to the function to obtain the corresponding time y t 。
Specifically, by setting the fourth detecting unit 61, the data of the second residual current in the first period of time is accurately detected, so that the accuracy of the detection result is ensured, by setting the second extracting unit 62 to obtain the first image, the change of the second residual current in the first period of time is clear and visible, the observation is convenient, the time cost is saved, the working efficiency of the second control module is improved, by setting the third control unit 63 to control, different control schemes are adopted for different situations of the first image, the resource waste of the circuit is avoided, by setting the second calculating unit 64, the starting time of the second protecting unit 65 is accurately predicted, the energy consumption of the circuit is avoided, and meanwhile, the safety of the circuit is ensured.
Specifically, the third control unit 63 is not activated when the slope of the first image is 0.2 or less, and the time y calculated by the second calculation unit 64 when the slope of the first image is greater than 0.2 t The third control unit 63 is activated by y t After the time, the third control unit 63 starts the second protection unit 65 to switch the circuit switch to the on state.
Specifically, the third detection module 70 includes a plurality of fifth detection units 71, and the plurality of fifth detection units 71 are respectively disposed at the first abnormal position and the positions adjacent thereto, so as to determine the current condition of the first abnormal position after the first control module 50 or the second control module 60 turns off the circuit switch.
Specifically, when the data detected by the plurality of fifth detecting units 71 are all 0, the circuit is in an off state.
Specifically, by providing a plurality of fifth detecting units 71 to detect the opened circuit, it is determined that the circuit is completely opened, so that the damage generated when the circuit is not completely opened is avoided, the safety of the circuit is ensured, and the consumption of circuit energy is avoided.
Specifically, the display module 20 includes a display unit 21 and an alarm unit 22;
the display unit 21 is connected with the first detection module 10 and is used for displaying the first abnormal position in a marked manner;
the alarm unit 22 is connected to the display unit 21, and sends out an alarm signal when the first abnormal position is marked.
Specifically, by providing the display unit 21 to display the first abnormal position in the circuit, observation of the abnormal position is facilitated, and real-time performance of the observation of the abnormal position is improved.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An anti-interference intelligent residual current operated protector system, comprising:
the first detection module is used for detecting the phase difference of the whole circuit and acquiring a first abnormal position and a first residual current of the circuit;
the display module is connected with the first detection module and used for displaying the first abnormal position and giving an alarm;
the screening module is connected with the display module and used for detecting the first residual current to obtain first residual current data, if the first residual current data is larger than or equal to first standard residual current data, the first residual current removes interference current through the filter circuit, and if the first residual current data is smaller than the first standard residual current data, the first residual current does not pass through the filter circuit, and the final output result is second residual current;
the second detection module is connected with the screening module and used for detecting the second residual current to obtain second residual current data, and comparing the second residual current data with second standard residual current data to obtain a first comparison result and a second comparison result;
The first control module is connected with the second detection module and used for starting the first control module to carry out disconnection protection on the circuit according to the first comparison result;
the second control module is connected with the second detection module and used for carrying out disconnection or non-disconnection protection on the circuit according to a first image drawn according to the change condition of the second residual current data in a first time period under the condition of the second comparison result;
and the third detection module is used for detecting the current of the first abnormal position when the circuit switch is disconnected.
2. The anti-interference intelligent residual current operated protector system according to claim 1, wherein the first detection module comprises a plurality of first detection units, a first calculation unit, a first identification unit and a first extraction unit;
the first detection units are respectively arranged on the whole circuit at intervals of 10cm and are used for detecting current values of all positions on the circuit;
the first calculation unit is connected with the plurality of first detection units and is used for carrying out phase difference calculation on current values of the adjacent first detection units to obtain a plurality of first phase difference data;
The first recognition unit is connected with the first calculation unit, and first standard phase difference data are arranged in the first recognition unit and used for comparing a plurality of first phase difference data with the first standard phase difference data to obtain a plurality of comparison results;
the first extraction unit is connected with the first identification unit and is used for extracting the maximum value in the comparison results, the circuit position corresponding to the maximum value is used as a first abnormal position, and the current flowing through the first abnormal position is used as a first residual current.
3. The anti-interference intelligent residual current operated protector system according to claim 2, wherein the screening module comprises a first storage unit, a second detection unit, a second identification unit and a filter circuit;
the first storage unit stores first standard residual current data;
the second detection unit is connected with the first storage unit and is used for detecting the magnitude of the first residual current, and the detection result is used as first residual current data;
the second identification unit is connected with the second detection unit and is used for comparing the first residual current data with the first standard residual current data, if the first residual current data is larger than or equal to the first standard residual current data, the filter circuit is started, and if the first residual current data is smaller than or equal to the first standard residual current data, the filter circuit is not started;
The filter circuit is connected with the second identification unit, is arranged at two sides of the first abnormal position and is used for removing interference current from the first residual current, if the filter circuit is started, the first residual current after the interference current is removed is used as second residual current, and if the filter circuit is not started, the first residual current is used as second residual current.
4. The anti-interference intelligent residual current operated protector system according to claim 3, wherein the filter circuit includes a first control unit, a first switch and a filter;
the first control unit is connected with the second identification unit and used for controlling the opening and closing of the first switch;
the first switch is connected with the first control unit, when the first residual current data is larger than or equal to the first standard residual current data, the first control unit controls the first switch to be closed, so that the first residual current flows through the filter, interference current in the first residual current is removed, and when the first residual current data is smaller than or equal to the first standard residual current data, the first control unit controls the first switch to be opened, so that the first residual current still flows through the first abnormal position;
The filter is connected with the first switch and is used for removing the interference current from the first residual current.
5. The tamper resistant intelligent residual current operated protector system according to claim 4, wherein said second detection module includes a second storage unit, a third detection unit and a third identification unit;
the second storage unit is provided with second standard residual current data;
the third detection unit is connected with the second storage unit and is used for detecting the second residual current and acquiring current data of the second residual current as second residual current data;
the third recognition unit is connected with the third detection unit and is used for comparing the second residual current data with the second standard residual current data to obtain a first comparison result and a second comparison result, wherein the first comparison result is that the second residual current data is larger than or equal to the second standard residual current data, and the second comparison result is that the second residual current data is smaller than the second standard residual current data.
6. The tamper resistant intelligent residual current operated protector system according to claim 5, wherein the first control module includes a second control unit and a first protection unit;
The second control unit is connected with the third identification unit and used for starting a first protection unit according to the first comparison result;
the first protection unit is arranged at the circuit switch and connected with the second control unit to disconnect the circuit switch.
7. The anti-interference intelligent residual current operated protector system according to claim 6, wherein the second control module includes a fourth detection unit, a second extraction unit, a third control unit, a second calculation unit and a second protection unit for starting the second control module according to the second comparison result;
the fourth detection unit is used for detecting the data change condition of the second residual current data in the first time period;
the second extraction unit is connected with the fourth detection unit and is used for extracting the data change of the second residual current in the first time period, the extracted data are used as a plurality of first data, the plurality of first data are drawn into an image, and the image is used as a first image;
the third control unit is connected with the second extraction unit, if the slope of the first image is smaller than or equal to 0.2, the third control unit is not started, and if the slope of the first image is larger than 0.2, instruction information is sent to the third control unit according to the time when the second residual current data reaches the second standard residual current;
The second calculating unit is connected with the second extracting unit and is used for calculating the time of the second residual current data reaching the second standard residual current according to the first image, and taking a calculation result as a first moment;
the second protection unit is arranged at the circuit switch and is respectively connected with the third control unit and the second calculation unit and is used for receiving instruction information of the third control unit at the first moment so that the second protection unit can disconnect the circuit switch according to the instruction information.
8. The anti-interference intelligent residual current operated protector system according to claim 7, wherein the second calculation unit calculates the three points on the first image as (x 1 ,y 1 )，(x 2 ,y 2 ) And (x) 3 ,y 3 ) The x is 1 ，x 2 ，x 3 For any three data in the first data, y is as follows 1 ，y 2 ，y 3 Respectively, the second residual current data reaches x 1 ，x 2 ，x 3 The corresponding time, which is taken into the function y=ax 2 The values of a, b and c are obtained by +bx+c, wherein a, b and c are constants, x represents the data of the second residual current, y represents the time of reaching the corresponding residual current data, and the value of the second standard residual current is added to the function to obtain the corresponding time y t 。
9. The anti-interference intelligent residual current operated protector system according to claim 8, wherein the third detecting module includes a plurality of fifth detecting units, and the plurality of fifth detecting units are respectively disposed at the first abnormal position and the adjacent positions thereof, so as to determine the current condition of the first abnormal position after the first control module or the second control module turns off the circuit switch.
10. The tamper resistant intelligent residual current operated protector system according to claim 9, wherein the display module includes a display unit and an alarm unit;
the display unit is connected with the first detection module and used for displaying the first abnormal position in a marked mode;
the alarm unit is connected with the display unit, and when the first abnormal position is marked, the alarm unit sends out an alarm signal.
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