CN116047367A - Intelligent judging method and device for secondary circuit wiring of on-load diagnosis current - Google Patents
Intelligent judging method and device for secondary circuit wiring of on-load diagnosis current Download PDFInfo
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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
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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Abstract
The invention discloses an intelligent judging method and device for on-load diagnosis current secondary loop wiring, comprising the following steps: editing at a discrimination interface; inputting data; obtaining a diagnosis result; the distinguishing interface comprises a device name, a loop type, active and reactive power, a CT transformation ratio, a phase compensation mode, a reference phase mode, a current secondary amplitude value and a current phase; the input data comprises phase discrimination errors, corner compensation angles and current amplitude errors; the step of obtaining the diagnosis result comprises the step of obtaining the diagnosis result according to current amplitude verification and phase sequence polarity verification to judge the correctness of the connection of the secondary circuit of the load diagnosis current. The method converts manual experience judgment in the case of abnormal data in the on-load judging direction into intelligent and digital judgment, overcomes the defects of insufficient experience and unsmooth analysis in the case of abnormal data facing different personnel, adapts to intelligent and digital operation and maintenance trend, effectively shortens the fault analysis time, provides effective guidance for fault investigation, and ensures normal operation of equipment.
Description
Technical Field
The invention relates to the technical field of computer platform load balancing, in particular to an intelligent judging method for on-load diagnosis current secondary loop wiring.
Background
Before a new device is put into operation, after the current secondary circuit is correctly connected through an up-flow test and a polarity test, the current secondary circuit is changed again but is not correctly recovered, so that abnormal situation of on-load direction judgment data after power transmission occurs.
The part of the measurement and control device can give an alarm when the phase sequence and the polarity of the secondary current loop are wrong, but the specific wiring error cannot be diagnosed. The mainstream phasers can measure the phase angle of the three-phase current, but can not quickly diagnose the wrong current loop connection, such as phase sequence connection error and polarity connection error.
The device can make up the defects of insufficient experience and not rapid analysis of different personnel facing data abnormality, adapts to intelligent and digital operation and maintenance trend, effectively shortens fault analysis time, provides effective guidance for fault investigation and ensures normal operation of equipment.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the above-described problems.
Therefore, the technical problems solved by the invention are as follows: the existing measurement and control device can give an alarm when the phase sequence and polarity of the secondary current loop are wrong, but the specific wiring error cannot be diagnosed. Mainstream phasers can measure three-phase current phase angles, but cannot quickly diagnose erroneous current loop wiring.
In order to solve the technical problems, the invention provides the following technical scheme: an intelligent judging method for the wiring of a secondary circuit of a load diagnosis current comprises the following steps:
editing at a judging interface, inputting data at a parameter setting interface, and obtaining a diagnosis result;
the distinguishing interface comprises a device name, a loop type, active and reactive power, a CT transformation ratio, a phase compensation mode, a reference phase mode, a current secondary amplitude value and a current phase;
the input data comprises phase discrimination errors, corner compensation angles and current amplitude errors;
the step of obtaining the diagnosis result comprises the step of obtaining the diagnosis result according to current amplitude verification and phase sequence polarity verification to judge the correctness of the connection of the secondary circuit of the load diagnosis current.
As a preferable mode of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the input data comprises:
a device name, a loop type input box, a text and a number can be edited and input;
the active power and reactive power input box can only edit and input numbers, including positive and negative numbers and decimal numbers;
the CT primary transformation ratio value and the CT secondary transformation ratio value are input into a box, and only positive integers can be edited and input;
three-phase primary current and three-phase secondary circuit input box, only can edit and input positive number;
the three-phase current phase input box can only edit and input numbers in the range of-360 to 360, including decimal numbers;
in the phase compensation mode multi-option box, the initial state of the power compensation option is automatically set True, and the initial states of the phase compensation option box and the rotation angle compensation option box are automatically set False;
in the reference phase mode single option box, the initial state of the voltage lead current option box is automatically set to True, and the initial state of the current lead voltage option box is automatically set to False.
As a preferable scheme of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the interface editing comprises the following steps:
resetting the power data; resetting the transformation ratio data; resetting the current data; resetting the phase data; checking the current amplitude; checking the phase sequence polarity; inputting data; resetting the phase sequence polarity diagnosis result; resetting the current amplitude diagnosis result; setting; the vector diagram is displayed.
As a preferable scheme of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the interface editing method further comprises the following steps:
clicking a reset power data button can clear the data of the active power and reactive power input frame;
clicking a reset variable ratio data button can clear the data of the CT primary variable ratio value and the CT secondary variable ratio value input frame;
clicking a reset current data button can clear data of a three-phase primary current and a secondary current input frame;
clicking a reset phase data button can clear the phase data of the ABC three-phase current phase;
clicking the input data, and storing the input data and the output result in the current interface, wherein the input data and the output result comprise equipment names, loop numbers, power, transformation ratios, current amplitude phases, phase compensation modes, reference phase modes, setting parameters and diagnosis results;
the setting parameters comprise phase discrimination errors, corner compensation angles and current amplitude errors;
clicking and resetting the phase sequence polarity diagnosis result, and clearing the wiring diagnosis result;
clicking the reset current amplitude diagnosis result to clear the amplitude diagnosis result;
clicking the setting button pops up a parameter setting interface that displays the last saved application data and allows parameter editing settings.
As a preferable mode of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the input data comprises:
in the phase discrimination error input box, only numbers between 0 and 20 can be edited and input;
in the corner compensation angle input box, only two data of 30 or 30 are edited and input, and the following remarks are provided beside the input box, namely, 11 o 'clock wiring is input to 30, and 1 o' clock wiring is input to 30;
in the current amplitude error input box, only numbers between 0 and 1 can be edited and input;
clicking an application button and then executing the application buttons in sequence;
judging whether the input data meets the requirements, and when any one of the phase discrimination error, the rotation angle compensation angle and the current amplitude error does not meet the requirements or is empty, popping up a request for checking and inputting a parameter prompt box;
when the input data meets the requirements, storing setting parameters for the use of a judging program, and automatically closing a setting window;
clicking a closing button of the window to close a setting window interface, setting parameters are not applied, and setting parameters applied last time are not changed.
As a preferable scheme of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the current amplitude verification comprises the following steps:
starting an amplitude data self-checking program, and judging whether the data of the CT primary transformation ratio, the CT secondary transformation ratio, the three-phase primary current and the three-phase secondary current input frame meet the requirements or not;
when any one of the input boxes is empty or the input format is incorrect, popping up a request to check and input a transformation ratio and current data prompt box;
when the input data format meets the requirements, starting an amplitude verification program, calculating and judging whether the current amplitude is normal according to the transformation ratio, the primary current value and the secondary current value, and displaying the result in an ABC phase amplitude diagnosis result text box of the interface.
As a preferable scheme of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the phase sequence polarity verification comprises the following steps:
starting a phase sequence data self-checking program, and judging whether the data of the active power, the reactive power and the three-phase current phase input frame meet the requirements;
when the power data input box and the phase data input box are in the same time, any one input box is empty or the data format is not in accordance with the requirements, a pop-up request is made to check and input the power and phase data prompt boxes;
when the data meets the requirements, a phase sequence checking program is started, whether the polarity phase sequence is normal or not is calculated and judged, and a result is displayed in a three-phase sequence polarity judging result text box of the interface.
As a preferable scheme of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the vector diagram display comprises the following steps:
reading data in a three-phase secondary current input box; reading three-phase data; and (5) popping up a current vector diagram window.
As a preferable scheme of the intelligent judging method for the on-load diagnosis current secondary loop wiring, the method for reading the data in the three-phase secondary current input frame comprises the following steps:
when any one phase data format is not in accordance with the requirement or is empty, setting the display amplitude of the three-phase current to be 1; when the three-phase secondary current amplitude data format meets the requirement, selecting the value with the largest amplitude as a base number, and dividing the display amplitude of the three-phase current by the base number;
the reading of the three-phase data includes setting the display phase of the phase to 0 when which phase data does not meet the format requirement or is empty.
An intelligent judging method for wiring of a secondary circuit of a load diagnosis current is characterized by comprising the following steps:
the device comprises a shell module, a power supply module, a charging module, a display module and a system module;
the shell module is a system module which is formed by protecting a power supply module, a charging module, a display module and a shell through a shell;
the power supply module is used for starting the system module through a power switch;
the charging module charges the system module through a 220V charging port;
the display module is an operating system module for operating the display screen through liquid crystal;
the system module is based on a current phase angle characteristic matrix, intelligently judges the correctness of a load judging result, can rapidly diagnose more than 40 possible current secondary loop wiring errors when the load judging direction data are abnormal, and converts manual experience judgment when the load judging direction data are abnormal into intelligent and digital judgment.
The invention has the beneficial effects that: the intelligent judging method and the intelligent judging system for the secondary circuit wiring of the on-load diagnosis current can be used on a production site, and are flexible and convenient to assist in rapid judging of the secondary wiring; whether the amplitude, phase sequence and polarity of the secondary current are correct or not can be judged, and the error wiring condition of the phase sequence and polarity can be judged; the input data and the discrimination result can be generated into a text and form file; the discrimination algorithm has strong program flexibility, can be secondarily developed and popularized by depending on the existing wave recording and information protecting platform in the later period, and improves the intelligent operation and maintenance efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of a discrimination interface of an intelligent discrimination method for on-load diagnosis current secondary loop wiring according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of current vector of an intelligent judging method for connection of secondary loop of load diagnosis current according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a parameter setting interface of an intelligent judging method for a secondary loop wiring of a load diagnosis current according to a first embodiment of the present invention;
fig. 4 is a block diagram of an intelligent judging method for the connection of the secondary loop of the load diagnosis current according to two embodiments of the invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
While the embodiments of the present invention have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the method or element referred to 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, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixed connection, detachable connection or integral connection; it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1-3, an intelligent discrimination method for on-load diagnosis current secondary loop wiring is provided for one embodiment of the invention.
As shown in fig. 1, editing and inputting data at a discrimination interface to obtain a diagnosis result;
the distinguishing interface comprises a device name, a loop type, active and reactive power, a CT transformation ratio, a phase compensation mode, a reference phase mode, a current secondary amplitude value and a current phase.
The input data includes:
a device name, a loop type input box, a text and a number can be edited and input;
the active power and reactive power input box can only edit and input numbers, including positive and negative numbers and decimal numbers;
the CT primary transformation ratio value and the CT secondary transformation ratio value are input into a box, and only positive integers can be edited and input;
three-phase primary current and three-phase secondary circuit input box, only can edit and input positive number;
the three-phase current phase input box can only edit and input numbers in the range of-360 to 360, including decimal numbers;
in the phase compensation mode multi-option box, the initial state of the power compensation option is automatically set True, and the initial states of the phase compensation option box and the rotation angle compensation option box are automatically set False;
in the reference phase mode single option box, the initial state of the voltage lead current option box is automatically set to True, and the initial state of the current lead voltage option box is automatically set to False.
The interface editing includes:
resetting the power data; resetting the transformation ratio data; resetting the current data; resetting the phase data; checking the current amplitude; checking the phase sequence polarity; inputting data; resetting the phase sequence polarity diagnosis result; resetting the current amplitude diagnosis result; setting; the vector diagram is displayed.
The interface editing further includes:
clicking a reset power data button can clear the data of the active power and reactive power input frame;
clicking a reset variable ratio data button can clear the data of the CT primary variable ratio value and the CT secondary variable ratio value input frame;
clicking a reset current data button can clear data of a three-phase primary current and a secondary current input frame;
clicking a reset phase data button can clear the phase data of the ABC three-phase current phase;
clicking the input data, and storing the input data and the output result in the current interface, wherein the input data and the output result comprise equipment names, loop numbers, power, transformation ratios, current amplitude phases, phase compensation modes, reference phase modes, setting parameters and diagnosis results;
the setting parameters comprise phase discrimination error Er, rotation angle compensation angle Pt and current amplitude error Ar
Clicking and resetting the phase sequence polarity diagnosis result, and clearing the wiring diagnosis result;
clicking the reset current amplitude diagnosis result to clear the amplitude diagnosis result;
clicking the setting button pops up a parameter setting interface that displays the last saved application data and allows parameter editing settings.
As shown in fig. 3, the parameter settings include: data can be input in a parameter setting interface;
the input data comprises phase discrimination errors, corner compensation angles and current amplitude errors;
the phase discrimination error input box can only edit and input numbers between 0 and 20;
the corner compensation angle input box can only edit and input 30 or-30 data, and the following remarks are arranged beside the input box, wherein the input is requested to be performed by 11 o ' clock wiring, and the input is requested to be performed by 1 o ' clock wiring, and the input is requested to be performed by-30 o ' clock wiring;
the current amplitude error input box can only edit and input numbers between 0 and 1;
clicking an application button and then executing the application buttons in sequence;
judging whether the input data meets the requirements, and when any one of the phase discrimination error, the rotation angle compensation angle and the current amplitude error does not meet the requirements or is empty, popping up a request for checking and inputting a parameter prompt box;
when the input data meets the requirements, saving the setting parameters for the discrimination program, and automatically closing the setting window;
clicking a closing button of the window to close a setting window interface, setting parameters are not applied, and setting parameters applied last time are not changed.
The current amplitude verification includes:
and starting an amplitude data self-checking program, and judging whether the data of the CT primary transformation ratio, the CT secondary transformation ratio, the three-phase primary current and the three-phase secondary current input frame meet the requirements or not. When any one of the input boxes is empty or the input format is incorrect, popping up a request to check and input a transformation ratio and current data prompt box;
and when the input data format meets the requirements, starting an amplitude verification program, calculating and judging whether the current amplitude is normal according to the transformation ratio, the primary current value and the secondary current value, and displaying the result in an ABC phase amplitude diagnosis result text box of the interface.
The phase sequence polarity check includes:
starting a phase sequence data self-checking program, and judging whether the data of the active power, the reactive power and the three-phase current phase input frame meet the requirements;
when the power data input box and the phase data input box are empty or the data format is not in accordance with the requirements, popping up a request to check and input the power and phase data prompt boxes;
and when the data meets the requirements, starting a phase sequence checking program, calculating and judging whether the polarity phase sequence is normal, and displaying the result in a three-phase sequence polarity judging result text box of the interface.
As shown in fig. 2, the vector diagram display includes:
reading data in a three-phase secondary current input frame, and setting the display amplitude of the three-phase current to be 1 when any one phase data format is not in accordance with the requirement or is empty; when the three-phase secondary current amplitude data format meets the requirements, selecting the value with the largest amplitude as a base number, wherein the display amplitude of the three-phase current is the respective secondary amplitude divided by the base number, and reading the three-phase data comprises setting the display phase of the three-phase data to 0 when the data of the three-phase does not meet the format requirements or is empty, and judging the condition of a reference phase mode if the data of the three-phase data meet the format requirements: if the mode is voltage lead current, the three phases of display phases are respectively read corresponding phase data; if the mode is current lead voltage, the three phases of display phases are respectively 360 degrees minus the read corresponding phase data;
the current vector diagram window pops up, and fig. 2 is a schematic diagram of the current vector. The window displays a current vector diagram, the display amplitude of the current in the vector diagram is drawn according to the data in the three-phase secondary current input frame and the data in the three-phase data, the vector diagram is shown in fig. 2, the positive vertical half axis is 0 degrees, anticlockwise rotation is a lead angle, the A phase is yellow, the B phase is green, and the C phase is red, the 0-degree direction is yellow of the A phase, the C phase is red between 90 degrees and 180 degrees, and the B phase is green between 180 degrees and 270 degrees.
Compared with the prior art, the invention constructs an intelligent judging method for the secondary circuit wiring of the on-load diagnosis current; the method can intelligently judge the correctness of the load judging result, can rapidly diagnose more than 40 kinds of possible current secondary circuit wiring errors when the on-load judging direction data are abnormal, converts the manual experience judgment when the on-load judging direction data are abnormal into intelligent and digital judgment, overcomes the defects of insufficient experience and not rapid analysis when different personnel face the data abnormality, adapts to the trend of intelligent and digital operation and maintenance, effectively shortens the fault analysis time, provides effective guidance for fault investigation, and ensures that equipment is normally put into operation.
Example 2
Referring to fig. 4, for one embodiment of the present invention, an intelligent discriminating apparatus for on-load diagnosis of current secondary loop wiring is provided, including: a housing module 100, a power module 200, a charging module 300, a display module 400, a system module 500;
the shell module 100 comprises a power supply module 200, a charging module 300, a display module 400 and a system module 500, wherein the power supply module 200 is connected with the charging module 300 through a charging port, and the display module 400 displays data of the system module 500;
the system module 500 intelligently judges the correctness of the judging load result based on the current phase angle characteristic matrix, can rapidly diagnose more than 40 current secondary loop wiring errors possibly existing when the on-load judging direction data are abnormal, and converts the manual experience judgment when the on-load judging direction data are abnormal into intelligent and digital judgment;
the method overcomes the defects of insufficient experience and unsophisticated analysis when different personnel face abnormal data, adapts to intelligent and digital operation and maintenance trend, effectively shortens fault analysis time, provides effective guidance for fault detection, ensures normal operation of equipment, has strong flexibility of a discrimination algorithm program, and can carry out secondary development and popularization by depending on the existing wave recording and information protecting platform in the later stage, thereby improving intelligent operation and maintenance efficiency.
Example 3
The implementation method of the intelligent judging device for carrying out the connection of the secondary circuit of the load diagnosis current at a certain company comprises the following steps of;
step 1: judging whether a phase sequence polarity check button is clicked to start, if yes, executing the step 2, and if not, waiting;
step 2: the following data were read:
(1) Active power P and reactive power Q;
(2) Phase data: ABC three-phase current phase-A, phase-B, phase-C;
(3) Phase compensation mode: a power compensation bit F-g, a polarity compensation bit F-k and a rotation angle compensation bit F-t (an interface object is a check box);
(4) Reference phase pattern: voltage lead current bit U-I, current lead voltage bit I-U (interface object is option button);
(5) Phase discrimination error Er and rotation angle compensation angle Pt in parameter setting.
Step 3: and judging whether the input numerical data format meets the requirement. If any one of the data P, Q, phase-A, phase-B, phase-C is empty or does not meet the requirement, popping up a prompt box of 'please check and input power and phase data', and returning to the step 1; if the two requirements are met, executing the step 4;
step 4: and judging the reference phase pattern bit data. If the voltage lead current bit U_I is false and the current lead voltage bit I_U is false, pop up the "please check and select reference phase mode" prompt box, return to step. If the voltage lead current bit U_I is true and the current lead voltage bit I_U is false, go to step 5. If the voltage lead voltage bit U_I is false and the current lead voltage bit I_U is true, performing current phase reference conversion,
phase_A＝360–phase_A
phase_B＝360–phase_B
phase_C＝360–phase_C；
step 5: and judging the input phase compensation mode bit data. If all three of the power compensation bit F_g, the polarity compensation bit F_k and the rotation angle compensation bit F_t are false, a prompt box of 'please check and select a phase compensation mode' is popped up, and the step 1 is returned; if at least one of F_g, F_k and F_t is true, executing the step 6;
step 6: the power compensation bit F _ g is determined. If false, the power compensation angle g_ph=0; if true, the power compensation angle g_ph is calculated as:
wherein g_ph represents a power compensation angle, P represents active power, Q represents reactive power, and arccos represents an inverse trigonometric function;
step 7: the polarity compensation bit f_k is determined. If false, the polarity compensation angle k_ph=0; if true, the polarity compensation angle k_ph=180;
step 8: and judging the rotation angle compensation bit F_t. If false, the rotation angle compensation angle t_ph=0; if true, the rotation angle compensation angle t_ph=pt;
step 9: compensating and correcting the three-phase current phase, equivalently rotating the three-phase current phase, rectifying the three-phase current phase,
phase_A＝phase_A+360*n
phase_B＝phase_B+360*n
phase_C＝phase_C+360*n
wherein n is a positive integer, ensuring that phase_ A, phase _ B, phase _C is greater than or equal to 0 and less than or equal to 360;
step 10: creating a characteristic phase value array c [5], and creating a result output character string array s [5]:
c(0)＝0:c(1)＝60:c(2)＝120:c(3)＝180:c(4)＝240:c(5)＝300
s (0) = "correctly wired": s (1) = "leading phase polarity reverse followed by the principal phase": s (2) = "lagging phase polarity reverse": s (3) = "principal phase polarity reverse": s (4) = "leading phase": s (5) = "lagging phase polarity reverse followed by the principal phase";
step 11: and taking a phase to judge. If phase >340, c (0) =360, otherwise c (0) =0. Phase is compared with c. If there is |phase-c (j) | < Er, then the diagnosis result of this phase relt=s (j), if none of c (j) satisfies the condition, let relt= "discrimination error, please check the input value", where j e {0,1,2,3,4,5}.
Step 12: and judging whether the ABC three phases are judged to be finished, if not, returning to the step 10, and if so, outputting a three-phase judgment result to the interface.
Step 13: judging whether a current amplitude check button is clicked to start, if yes, executing the step 14, and if not, waiting;
step 14: the following data in the discrimination interface and the parameter setting interface are read:
(1) Transformation ratio data: a primary current ratio N1 and a secondary current ratio N2;
(2) Amplitude data: three-phase current primary values IA1, IB1, IC1, three-phase current secondary values IA2, IB2, IC2;
(3) Current amplitude error Ar.
Step 15: and judging whether the numerical data meets the requirements. If any one of the data of N1, N2, IA1, IB1, IC1, IA2, IB2 and IC2 does not meet the format requirement or is empty, popping up a prompt box of 'please check and input transformation ratio and current amplitude data', and returning to the step 13; if both the two requirements are met, executing the step 16;
step 16: and taking one phase Ix for discrimination. i_real=ix1/(N1/N2), if I (Ix 2-i_real)/i_real I < Ar, the phase amplitude verification result is "amplitude normal", otherwise the result is "amplitude abnormal". (where Ix1 represents a certain phase current primary value and Ix2 represents a certain phase current secondary value).
Step 17: judging whether the ABC three phases are judged to be finished, if not, returning to the step 16, and if so, outputting a three-phase judgment result to the interface.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. An intelligent judging method for wiring of a secondary circuit of a load diagnosis current is characterized by comprising the following steps:
editing at a judging interface, inputting data at a parameter setting interface, and obtaining a diagnosis result;
the distinguishing interface comprises a device name, a loop type, active and reactive power, a CT transformation ratio, a phase compensation mode, a reference phase mode, a current secondary amplitude value and a current phase;
the input data comprises phase discrimination errors, rotation angle compensation angles and current amplitude errors;
the step of obtaining the diagnosis result comprises the step of obtaining the diagnosis result according to current amplitude verification and phase sequence polarity verification to judge the correctness of the connection of the secondary circuit of the load diagnosis current.
2. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 1, wherein said input data includes:
a device name, a loop type input box, a text and a number can be edited and input;
the active power and reactive power input box can only edit and input numbers, including positive and negative numbers and decimal numbers;
the CT primary transformation ratio value and the CT secondary transformation ratio value are input into a box, and only positive integers can be edited and input;
three-phase primary current and three-phase secondary circuit input box, only can edit and input positive number;
the three-phase current phase input box can only edit and input numbers in the range of-360 to 360, including decimal numbers;
in the phase compensation mode multi-option box, the initial state of the power compensation option is automatically set True, and the initial states of the phase compensation option box and the rotation angle compensation option box are automatically set False;
in the reference phase mode single option box, the initial state of the voltage lead current option box is automatically set to True, and the initial state of the current lead voltage option box is automatically set to False.
3. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 1, wherein said interface editing includes:
resetting the power data; resetting the transformation ratio data; resetting the current data; resetting the phase data; checking the current amplitude; checking the phase sequence polarity; inputting data; resetting the phase sequence polarity diagnosis result; resetting the current amplitude diagnosis result; setting; displaying a vector diagram;
the vector diagram display comprises the steps of reading data in a three-phase secondary current input box, reading three-phase data and popping up a current vector diagram window.
4. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 1, wherein said interface editing further comprises:
clicking a reset power data button can clear the data of the active power and reactive power input frame;
clicking a reset variable ratio data button can clear the data of the CT primary variable ratio value and the CT secondary variable ratio value input frame;
clicking a reset current data button can clear data of a three-phase primary current and a secondary current input frame;
clicking a reset phase data button can clear the phase data of the ABC three-phase current phase;
clicking the input data, and storing the input data and the output result in the current interface, wherein the input data and the output result comprise equipment names, loop numbers, power, transformation ratios, current amplitude phases, phase compensation modes, reference phase modes, setting parameters and diagnosis results;
the setting parameters comprise phase discrimination errors, corner compensation angles and current amplitude errors;
clicking and resetting the phase sequence polarity diagnosis result, and clearing the wiring diagnosis result;
clicking the reset current amplitude diagnosis result to clear the amplitude diagnosis result;
clicking the setting button pops up a parameter setting interface that displays the last saved application data and allows parameter editing settings.
5. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 4, wherein said input data includes:
in the phase discrimination error input box, only numbers between 0 and 20 can be edited and input;
in the corner compensation angle input box, only two data of 30 or-30 can be edited and input, and the following remarks are provided beside the input box, wherein the input is requested to be performed at 11 o ' clock, the input is requested to be performed at 1 o ' clock, and the input is requested to be performed at-30 o ' clock;
in the current amplitude error input box, only numbers between 0 and 1 can be edited and input;
clicking an application button and then executing the application buttons in sequence;
judging whether the input data meets the requirements, and when any one of the phase discrimination error, the rotation angle compensation angle and the current amplitude error does not meet the requirements or is empty, popping up a request for checking and inputting a parameter prompt box;
when the input data meets the requirements, storing setting parameters for the use of a judging program, and automatically closing a setting window;
clicking a closing button of the window to close a setting window interface, setting parameters are not applied, and setting parameters applied last time are not changed.
6. The intelligent discrimination method for on-load diagnostic current secondary loop wiring of claim 1, wherein said current magnitude verification comprises:
starting an amplitude data self-checking program, and judging whether the data of the CT primary transformation ratio, the CT secondary transformation ratio, the three-phase primary current and the three-phase secondary current input frame meet the requirements or not;
when any one of the input boxes is empty or the input format is incorrect, popping up a request to check and input a transformation ratio and current data prompt box;
when the input data format meets the requirements, starting an amplitude verification program, calculating and judging whether the current amplitude is normal according to the transformation ratio, the primary current value and the secondary current value, and displaying the result in an ABC phase amplitude diagnosis result text box of the interface.
7. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 1, wherein said phase sequence polarity verification comprises:
starting a phase sequence data self-checking program, and judging whether the active power, reactive power, phase data, a phase compensation mode, a reference phase mode, phase discrimination errors in parameter setting, a rotation angle compensation angle and three-phase current phase input frame data meet the requirements or not;
when the power data input box and the phase data input box are in the same time, any one input box is empty or the data format is not in accordance with the requirements, a pop-up request is made to check and input the power and phase data prompt boxes;
when the data meets the requirements, a phase sequence checking program is started, whether the polarity phase sequence is normal or not is calculated and judged, and a result is displayed in a three-phase sequence polarity judging result text box of the interface.
8. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 7, wherein said phase compensation mode includes: a power compensation bit, a polarity compensation bit, and a rotation angle compensation bit;
the reference phase mode comprises that the voltage leads the current bit, and the current leads the voltage bit;
the power compensation bit is expressed as
Where g_ph is denoted as the power compensation angle, P is the active power, Q is the reactive power, and arccos is the inverse trigonometric function.
9. The intelligent discrimination method for on-load diagnostic current secondary loop wiring according to claim 3, wherein said reading data in a three-phase secondary current input box comprises:
when any one phase data format is not in accordance with the requirement or is empty, setting the display amplitude of the three-phase current to be 1; when the three-phase secondary current amplitude data format meets the requirement, selecting the value with the largest amplitude as a base number, and dividing the display amplitude of the three-phase current by the base number;
the reading of the three-phase data includes setting the display phase of the phase to 0 when which phase data does not meet the format requirement or is empty.
10. An intelligent discriminating device for wiring of a secondary circuit of a load diagnosis current is characterized by comprising:
a housing module (100), a power supply module (200), a charging module (300), a display module (400), a system module (500);
the shell module (100) is a system module (500) which is formed by protecting a power supply module (200), a charging module (300), a display module (400) and a system module through a shell;
the power supply module (200) is used for starting the system module (500) through a power switch;
the charging module (300) charges the system module (500) through a 220V charging port;
the display module (400) is an operating system module (500) for operating the display screen through liquid crystal;
the system module (500) is based on a current phase angle characteristic matrix, intelligently judges the correctness of a judging result, can rapidly diagnose more than 40 kinds of possible current secondary loop wiring errors when the on-load judging direction data are abnormal, and converts manual experience judgment when the on-load judging direction data are abnormal into intelligent and digital judgment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211605866.6A CN116047367A (en) | 2022-12-14 | 2022-12-14 | Intelligent judging method and device for secondary circuit wiring of on-load diagnosis current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211605866.6A CN116047367A (en) | 2022-12-14 | 2022-12-14 | Intelligent judging method and device for secondary circuit wiring of on-load diagnosis current |
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| Publication Number | Publication Date |
|---|---|
| CN116047367A true CN116047367A (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211605866.6A Pending CN116047367A (en) | 2022-12-14 | 2022-12-14 | Intelligent judging method and device for secondary circuit wiring of on-load diagnosis current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116047367A (en) |
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2022
- 2022-12-14 CN CN202211605866.6A patent/CN116047367A/en active Pending
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