CN115113127A - Detection device of insulation detector - Google Patents

Abstract

The invention relates to a detection device of an insulation detector, which comprises a power supply unit, an insulation resistance unit and an information processing unit, wherein the power supply unit comprises a bus voltage unit used for simulating bus voltage, and the bus voltage unit is used for being connected with a power port of the insulation detector; the alternating voltage unit can output alternating voltage and is connected with a port of the insulation detector; the direct-current voltage unit can output direct-current voltage and is connected with a port of the insulation detector; the information processing unit is electrically connected with the alternating voltage unit, the direct voltage unit and the insulation resistance unit, can acquire and process actual output values of the alternating voltage unit, the direct voltage unit and the insulation resistance unit, and is also connected with a port of the insulation detector so as to acquire an input value detected by the insulation detector; and judging whether the detection precision of the insulation detector meets a preset threshold value or not by comparing the actual output value with the input value.

Description

Insulation detector detection device

technical field

The invention relates to the technical field of instrument control, in particular to a detection device of an insulation detector.

Background technique

In order to effectively monitor the insulation of the power supply system, the nuclear power electrical and instrument control system is generally equipped with an insulation monitor to realize real-time monitoring of the insulation of the power supply bus. Abnormal insulation of the power supply bus will affect the reliability of the power supply bus, and affect the safe and stable operation of the process system. Especially when the positive and negative electrodes of the power supply bus have low insulation at the same time, it may cause the power supply bus to trip. If the insulation of the power supply bus is abnormal (insulation value is lower than the required value) or grounding, etc., the insulation monitor will automatically alarm, and it is necessary to arrange insulation search as soon as possible to ensure the reliable and stable operation of the equipment. In order to effectively calibrate the accuracy of the insulation monitor, it is necessary to periodically test and check the online insulation monitor. In the prior art, when the insulation detector needs to be calibrated, it needs to be returned to the factory for calibration, and the detection efficiency is low.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide an insulation detector detection device in order to solve the problem of low detection efficiency during calibration of insulation detectors in the prior art.

An insulation detector detection device, the insulation detector detection device includes a power supply unit, an insulation resistance unit and an information processing unit, and the power supply unit includes:

a busbar voltage unit for simulating a busbar voltage, and the busbar voltage unit is used for connecting with the power port of the insulation detector;

an AC voltage unit capable of outputting AC voltage, and the AC voltage unit is connected to the port of the insulation detector;

a DC voltage unit capable of outputting a DC voltage, and the DC voltage unit is connected to the port of the insulation detector;

The information processing unit is electrically connected to the AC voltage unit, the DC voltage unit and the insulation resistance unit, and the information processing unit can collect the AC voltage unit, the DC voltage unit and the insulation resistance unit The information processing unit is also connected with the port of the insulation detector to collect the input value detected by the insulation detector;

Wherein, by comparing the actual output value and the input value, it is determined whether the detection accuracy of the insulation detector meets a preset threshold.

In one embodiment, when the bus voltage unit and the AC voltage unit are connected to the insulation detector, the actual output value of the AC voltage unit is compared with the input value detected by the insulation detector. The comparison is used to test the AC voltage accuracy or AC series power alarm of the insulation detector.

In one embodiment, the live wire of the AC voltage unit is connected to the negative electrode of the insulation detector, and the neutral wire of the AC voltage unit is connected to the ground wire of the insulation detector, so as to be used for all Test the AC voltage accuracy of the negative pole of the insulation detector to ground;

Alternatively, the live wire of the AC voltage unit is connected to the positive electrode of the insulation detector, and the neutral wire of the AC voltage unit is connected to the ground wire of the insulation detector to connect the positive electrode of the insulation detector Test the AC voltage accuracy to ground.

Alternatively, the AC voltage unit is connected in series with the busbar voltage unit, so as to be used for testing the AC series power alarm of the insulation detector.

In one embodiment, when the bus voltage unit and the DC voltage unit are in communication with the insulation detector, the actual output value of the DC voltage unit is compared with the input value detected by the insulation detector. The comparison is used to test the DC voltage accuracy or the DC series power alarm of the insulation detector.

In one embodiment, the positive pole of the DC voltage unit is connected to the positive pole of the insulation detector, and the negative pole of the DC voltage unit is connected to the negative pole of the insulation detector, so as to be used for the insulation test. Test the accuracy of the positive and negative DC voltages of the detector;

Alternatively, the positive pole of the DC voltage unit is connected to the positive pole of the insulation detector, and the negative pole of the DC voltage unit is connected to the ground wire of the insulation detector, so as to be used for the negative pole of the insulation detector. Test the ground DC voltage accuracy;

Or, the positive pole of the DC voltage unit is connected to the ground wire of the insulation detector, and the negative pole of the DC voltage unit is connected to the negative pole of the insulation detector, so as to be used for the positive pole of the insulation detector. Test the ground DC voltage accuracy;

Alternatively, the DC voltage unit is connected in series with the bus voltage unit, so as to be used for testing the DC series power alarm of the insulation detector.

In one embodiment, the positive pole of the bus voltage unit is electrically connected to the positive pole of the insulation detector, the negative pole of the bus voltage unit is electrically connected to the negative pole of the insulation detector, and the insulation resistance unit is electrically connected to the insulation detector. The positive poles of the busbar voltage units are connected in series to alarm the positive pole of the insulation detector;

Alternatively, the positive electrode of the bus voltage unit is electrically connected to the positive electrode of the insulation detector, the negative electrode of the bus voltage unit is electrically connected to the negative electrode of the insulation detector, and the insulation resistance unit is electrically connected to the negative electrode of the bus voltage unit. The negative poles are connected in series to alarm the negative pole of the insulation detector.

In one embodiment, the insulation detector detection device further includes a switch unit and a control unit, the switch unit is electrically connected to the control unit, and the control unit is used to control the on-off of the switch unit, so The switch unit is electrically connected to the bus voltage unit, the AC voltage unit, the DC voltage unit and the insulation resistance unit, so that the bus voltage unit, the AC voltage unit, the DC voltage unit and the The insulation resistance unit is connected or disconnected from the insulation detector.

In one of the embodiments, the switch unit includes a plurality of switches, each of which is connected to the control unit wire, the bus voltage unit, the AC voltage unit, the DC voltage unit and the insulation resistance The units are respectively connected with at least one of the switches, and the control unit is used to control the switch on or off.

In one embodiment, the insulation detector detection device includes:

A housing, the power supply unit, the insulation resistance unit and the information processing unit are all integrated in the housing, the housing is provided with an air plug interface, the power supply unit and the insulation resistance unit are all electrically connected to the air plug interface;

an air plug connector, one end of the air plug connector is adapted to the air plug interface, and the other end of the air plug connector is adapted to the interface on the insulation detector, and the insulation detector passes the The aviation plug connector is electrically connected with the power supply unit and the insulation resistance unit.

In one embodiment, the insulation detector detection device further includes a display screen, the display screen is fixed on the casing and is electrically connected with the information processing unit and the insulation detector, the display screen is The screen is used to display the information processing result of the information processing unit and the alarm result of the insulation detector;

The housing is also provided with an insulation resistance interface, a voltage interface and an interface unit, the insulation resistance interface is used for external insulation resistance, and the voltage interface is used for external series DC voltage or external series AC voltage. , the interface unit is used to connect an external multimeter or resistance box;

The insulation detector detection device further includes an interface unit, the interface unit is connected to the power supply unit and the insulation resistance unit, and the interface unit is electrically connected to the interface unit.

Beneficial effects of the present invention:

The invention provides an insulation detector detection device, which simulates a normal power supply bus through a bus voltage unit, and compares the actual output values of the AC voltage unit, the DC voltage unit and the insulation resistance unit with the benchmark detected by the insulation detector. If the difference between an actual output value and the benchmark detection value exceeds the preset threshold, it indicates that the detection accuracy of the insulation tester for this parameter does not meet the requirements and needs to be calibrated. Through the above scheme, the automatic detection of the detection accuracy of the insulation detector can be realized, the human intervention is reduced, and the work efficiency can be improved.

Description of drawings

1 is a circuit diagram of each unit of an insulation detector detection device and an insulation detector provided by an embodiment of the present invention;

2 is a schematic front view of the structure of a detection device for an insulation detector provided by an embodiment of the present invention;

3 is a schematic diagram of a rear structure of an insulation detector detection device provided by an embodiment of the present invention;

4 is a schematic structural diagram of an air plug interface of an insulation detector detection device according to an embodiment of the present invention.

Insulation detector detection device 1; power supply unit 11; bus voltage unit 111; AC voltage unit 112; DC voltage unit 113; insulation resistance unit 12; information processing unit 13; control unit 14; interface unit 15; housing 16; insulation resistance interface 161; voltage interface 162; aviation plug connector 17; first pin 171; second pin 172; third pin 173; fourth pin 174; fifth pin 175; ninth pin 176; tenth Pin 177; Twelfth Pin 178; Display 18;

Insulation tester 2.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed, and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Referring to FIG. 1 to FIG. 4, FIG. 1 shows a schematic diagram of circuit connection of each unit in an insulation detector detection device 1 in an embodiment of the present invention. An embodiment of the present invention provides an insulation detector detection device 1, which uses In order to detect various parameters of the insulation detector 2, the insulation detector detection device 1 includes a power supply unit 11, an insulation resistance unit 12 and an information processing unit 13. The power supply unit 11 includes a bus voltage unit 111, an AC voltage unit 112 and a DC voltage unit 113. , wherein the bus voltage unit 111 is used to simulate the bus voltage, and the bus voltage unit 111 is used to connect with the power port of the insulation detector 2 to simulate the input bus voltage when the insulation detection unit works normally; the AC voltage unit 112 can output AC voltage, the AC voltage unit 112 is connected to the port of the insulation detector 2, so that the insulation detector 2 detects the voltage value on the AC voltage unit 112; the DC voltage unit 113 can output a DC voltage, and the DC voltage unit 113 and the insulation detector 2 The port is connected to enable the insulation detector 2 to detect the DC voltage value input on it; the information processing unit 13 is electrically connected to the AC voltage unit 112, the DC voltage unit 113 and the insulation resistance unit 12, and the information processing unit 13 can collect and process the AC voltage The actual output value of the unit 112, the DC voltage unit 113 and the insulation resistance unit 12, the information processing unit 13 is also connected to the port of the insulation detector 2 to collect the input value detected by the insulation detector 2; wherein, by comparing the actual output value and the input value to judge whether the detection accuracy of the insulation detector 2 meets the preset threshold.

The present invention provides an insulation detector detection device 1, which simulates a normal power supply bus through the bus voltage unit 111, and compares the actual output values of the AC voltage unit 112, the DC voltage unit 113 and the insulation resistance unit 12 with the insulation detector. 2. Compare the detected benchmark detection values. If the difference between an actual output value and the benchmark detection value exceeds the preset threshold, it indicates that the detection accuracy of the insulation detector 2 for this parameter does not meet the requirements and needs to be calibrated. Through the above solution, the automatic detection of the detection accuracy of the insulation detector 2 can be realized, the human intervention is reduced, and the work efficiency can be improved.

It should be noted that in this embodiment, the voltage values on the DC voltage unit 113, the AC voltage unit 112, and the resistance value on the insulation resistance unit 12 can be adjusted, and the output values of these voltage values and resistance values are themselves the actual value. Through the information processing unit 13, the actual output value on the corresponding unit is compared with the value detected by the insulation detector 2, and then the AC voltage accuracy and bus voltage accuracy of the insulation detector 2 are detected, and the insulation detector 2 Check whether the functions of AC series power alarm, DC series power alarm and grounding alarm are reliable. The voltage output by the bus power supply unit 11 is a DC voltage, and the voltage value is a stable 28V. Of course, the information processing method of the information processing unit 13 is realized by a software program, which is not described here.

In one of the embodiments, referring to FIG. 1 to understand, the insulation detector detection device 1 further includes a switch unit and a control unit 14, the switch unit is electrically connected to the control unit 14, and the control unit 14 is used to control the on-off of the switch unit, and the switch The unit is wired to the bus voltage unit 111, the AC voltage unit 112, the DC voltage unit 113 and the insulation resistance unit 12, so that the bus voltage unit 111, the AC voltage unit 112, the DC voltage unit 113, the insulation resistance unit 12 and the insulation tester 2 on or off. The on-off of the switch unit is controlled by the control unit 14 , so that different voltage units are connected to the insulation detector 2 , thereby realizing automatic detection of the detection accuracy of different parameters of the insulation detector 2 , thereby improving the accuracy of the insulation detector 2 detection efficiency.

Specifically, referring to FIG. 1 to understand, the switch unit includes a plurality of switches, each switch is connected to the control unit 14 by wires, and the bus voltage unit 111 , the AC voltage unit 112 , the DC voltage unit 113 and the insulation resistance unit 12 are respectively connected with at least one switch , the control unit 14 is used to control the switch on or off. For example, a one-way switch is connected between the bus voltage unit 111 and the positive pole of the insulation detector 2, and between the bus voltage unit 111 and the negative pole of the insulation detector 2, respectively, to realize the positive and negative connection between the bus voltage unit 111 and the insulation detector 2. The connection or disconnection between the negative electrodes. Since the DC voltage unit 113 and the AC voltage unit 112 are switchably connected to the insulation detector 2 , the above two voltage units can share one line. Specifically, a line connected to the positive pole of the insulation detector 2, a line connected to the negative pole of the insulation detector 2, and a line connected to the ground wire of the insulation detector 2 are provided inside the detection device, A one-way switch is respectively provided on the first two lines to control the on-off of the positive and negative electrodes of the voltage unit and the insulation detector 2 respectively. Selecting switches are respectively set on the AC voltage unit 112 and the DC voltage unit 113 to be connected to the above three lines, so as to realize that the DC voltage unit 113 is connected to the above three lines, or the AC voltage unit 112 is connected to the above three lines. Through the above arrangement, not only the circuit can be simplified, but also the mutual communication relationship between the power supply unit 11 and the insulation detector 2 can be easily controlled.

In one embodiment, referring to FIG. 1 to understand, when the AC voltage accuracy or AC series power alarm of the insulation detector 2 is tested, the bus voltage unit 111 and the AC voltage unit 112 communicate with the insulation detector 2 . At this time, the control unit 14 controls the switch on the AC voltage unit 112 to communicate with the ground wire of the insulation detector 2 and the positive and negative wires. Of course, the on-off of the AC voltage unit 112 with the positive electrode and the negative electrode can also be realized by controlling the corresponding switches on the positive electrode and the negative electrode. By comparing the actual value of the voltage input to the insulation detector 2 with the voltage value detected by the insulation detector 2, it is determined whether the detection accuracy of the insulation detector 2 for AC voltage meets the requirements, and whether the AC series power alarm is not reliable.

Specifically, referring to FIG. 1 to understand, when it is necessary to test the AC voltage accuracy of the negative pole of the insulation detector 2 to the ground, the live wire of the AC voltage unit 112 is connected to the negative pole of the insulation detector 2, and the zero of the AC voltage unit 112 is connected. The wire is connected to the ground wire of the insulation detector 2, the AC voltage unit 112 outputs AC voltage, and the magnitude of the AC voltage can be adjusted according to the test content. At this time, the switch corresponding to the live wire of the AC voltage unit 112 and the negative terminal of the insulation detector 2 is turned on, and the switch corresponding to the neutral wire and the ground wire of the AC voltage unit 112 is turned on. In this embodiment, the break-in voltage of the AC voltage unit 112 is between 5 and 250V, and the accuracy of the AC voltage of the negative electrode of the insulation detector 2 to the ground is required to be no more than 5%. The actual output value of the AC voltage is represented by U _N here, and the voltage value of the AC voltage unit 112 detected on the insulation tester 2 is represented by U _X , then the error value between the detection value of the insulation tester 2 and the actual output value It is denoted by γ, where the error value is obtained by the following formula:

Wherein, _{UN is the actual output value of the AC voltage unit 112; U X is} the output value of the AC voltage unit 112 detected by the insulation detection unit.

If the error value γ is within 5%, it indicates that the detection accuracy of the insulation detector 2 for AC voltage meets the requirements. If the error value γ is greater than 5%, it indicates that the detection accuracy of the insulation detector 2 for AC voltage is not up to standard, and needs to be corrected.

1 to be understood, when the accuracy of the positive-to-ground AC voltage of the insulation detector 2 is detected, the live wire of the AC voltage unit 112 is connected to the positive pole of the insulation detector 2, that is, the live wire of the AC voltage unit 112 is connected to the insulation The switch corresponding to the positive pole of the detector 2 is turned on, the neutral wire of the AC voltage unit 112 is connected to the ground wire of the insulation detector 2, and the switch between the neutral wire of the AC voltage unit 112 and the ground wire of the insulation detector 2 is turned on . The AC voltage unit 112 outputs an AC voltage, and the magnitude of the AC voltage can be adjusted according to the test content. At this time, the actual output value of the AC voltage is the positive-to-ground voltage value. By comparing the actual output value with the voltage value of the positive-to-ground AC voltage unit 112 displayed on the insulation detector 2, the insulation detector 2 is calculated. The error value between the detected value and the actual detected value. Wherein, the calculation formula of the error value is the same as the above formula (1), which is not repeated here. If the error value is within the accuracy requirement range, it indicates that the detection accuracy of the insulation detector 2 for the AC voltage from the positive electrode to the ground meets the requirements. Not up to standard, need to be corrected.

Correspondingly, referring to FIG. 1 to understand, when testing the AC series power alarm of the insulation detector 2 , the AC voltage unit 112 is connected in series with the bus voltage unit 111 . Wherein, the neutral line of the AC voltage is connected with the connection between the bus voltage unit 111 and the negative electrode of the insulation detector 2, the live wire of the AC voltage unit 112 is connected with the connection between the bus voltage unit 111 and the negative electrode of the insulation detector 2, In order to realize the series connection of the AC voltage unit 112 and the bus voltage unit 111 . Since the voltage value input to the insulation detector 2 at this time is the sum of the voltage of the bus voltage unit 111 and the AC voltage unit 112, it means that a voltage source is connected in series to the bus voltage unit 111. When the insulation detector 2 detects the bus voltage When there is a series voltage on the unit 111, the alarm on the insulation detector 2 is triggered, and the insulation detector 2 alarms. If the insulation detector 2 does not give an alarm, it means that the AC series power alarm function of the insulation detector 2 is abnormal and needs to be corrected.

In one embodiment, referring to FIG. 1 to understand, when the DC voltage accuracy or DC series power alarm of the insulation detector 2 needs to be tested, the bus voltage unit 111 and the DC voltage unit 113 communicate with the insulation detector 2 . That is to say, when it is necessary to test the DC voltage accuracy of the insulation detector 2 or the DC series power alarm, the control unit 14 connects the corresponding switch on the line connecting the positive and negative poles of the insulation detector 2 with the DC voltage unit 113 . The positive pole of the insulation detector 2 is connected to the positive pole; the switch on the line corresponding to the ground wire of the insulation detector 2 is connected to the negative pole of the DC voltage unit 113 . Then, by controlling the switches corresponding to the positive pole and the negative pole of the insulation detector 2 , it is realized whether the positive pole of the DC voltage unit 113 is connected to the positive pole or the negative pole of the insulation detector 2 . There is also a line connected to the negative electrode of the insulation detector 2 on the negative electrode of the AC voltage unit 112 , and the on-off of the line is realized by controlling the switch on the line. The connection or disconnection between the DC voltage unit 113 and the corresponding line of the insulation detector 2 is realized by controlling the on-off of the corresponding switch, and then the insulation detector 2 is detected.

Specifically, referring to FIG. 1 to understand, when testing the accuracy of the positive and negative DC voltages of the insulation detector 2, the control unit 14 connects the switch on the positive pole of the DC voltage unit 113 to the positive and negative lines of the insulation detection unit. Connect and turn on the switch corresponding to the positive pole of the insulation detector 2, and correspondingly the switch between the negative pole of the DC voltage unit 113 and the negative pole of the insulation detector 2 is also turned on, so that the positive pole of the DC voltage unit 113 and the insulation The positive pole of the detector 2 is connected to each other, and the negative pole of the DC voltage unit 113 is connected to the negative pole of the insulation detector 2 . By comparing the actual voltage value input to the insulation detector 2 with the voltage value detected by the insulation detector 2, it is determined whether the detection accuracy of the positive and negative DC voltages by the insulation detector 2 meets the requirements. The DC voltage unit 113 outputs a DC voltage, and the output size of the DC voltage can be adjusted according to the test content. The range of the output value of the DC voltage is 0-40V, and the accuracy of the positive and negative DC voltages is required to be no more than 1%. Among them, the calculation of the detection error value is the same as the above formula (1).

1 to be understood, when testing the DC voltage accuracy of the negative pole of the insulation detector 2 to the ground, the control unit 14 connects the switch on the positive pole of the DC voltage unit 113 with the lines of the positive and negative poles of the insulation detector 2, Turn on the switch corresponding to the positive pole of the insulation detector 2, so that the positive pole of the DC voltage unit 113 is connected to the positive pole of the insulation detector 2, and the negative pole of the DC voltage unit 113 is connected to the ground wire of the insulation detector 2 accordingly. The switch between the two is also turned on, so that the negative electrode of the DC voltage unit 113 is connected to the ground wire of the insulation detector 2 . By comparing the actual voltage value input to the insulation detector 2 with the voltage value detected by the insulation detector 2, it is determined whether the detection accuracy of the insulation detector 2 for the negative-to-ground DC voltage meets the requirements.

It can be understood with reference to FIG. 1 that when the accuracy of the positive-to-ground DC voltage of the insulation detector 2 needs to be tested, the control unit 14 connects the switch on the positive pole of the DC voltage unit 113 to the ground wire of the insulation detection unit, so that the DC The positive pole of the voltage unit 113 is connected to the ground wire of the insulation detector 2, and accordingly the switch between the negative pole of the DC voltage unit 113 and the negative pole of the insulation detector 2 is also turned on, so that the negative pole of the DC voltage unit 113 is connected to the insulation detector 2. The negative terminal of instrument 2 is connected. Similarly, by comparing the actual output value of the DC voltage unit 113 with the detection value of the insulation detector 2, it is determined whether the detection accuracy of the insulation detector 2 for the positive-to-ground DC voltage is up to standard.

Correspondingly, referring to FIG. 1 to understand, when testing the DC series power alarm of the insulation detector 2 , the DC voltage unit 113 is connected in series with the bus voltage unit 111 . In this embodiment, the positive electrode of the DC voltage unit 113 is connected to the connection between the bus voltage unit 111 and the negative electrode of the insulation detector 2 , and the negative electrode of the DC voltage unit 113 is connected to the bus voltage unit 111 and the negative electrode of the insulation detector 2 . The connection between the DC voltage units 113 and the bus voltage unit 111 are connected in series. Since the voltage value input to the insulation detector 2 at this time is the sum of the voltage of the bus voltage unit 111 and the DC voltage unit 113, it means that a DC voltage source is connected in series to the bus voltage unit 111. When the insulation detector 2 detects the busbar When there is a series voltage on the voltage unit 111, the alarm on the insulation detector 2 is triggered, and the insulation detector 2 alarms. If the insulation detector 2 does not alarm, it means that the DC series alarm function of the insulation detector 2 is abnormal and needs to be corrected.

In one embodiment, referring to FIG. 1 to understand, the positive electrode of the bus voltage unit 111 is electrically connected to the positive electrode of the insulation detector 2, the negative electrode of the bus voltage unit 111 is electrically connected to the negative electrode of the insulation detector 2, and the insulation resistance unit 12 is electrically connected to the The positive poles of the bus voltage unit 111 are connected in series to provide a grounding alarm for the positive pole of the insulation detector 2; alternatively, the positive pole of the bus voltage unit 111 is electrically connected to the positive pole of the insulation detector 2, and the negative pole of the bus voltage unit 111 is connected to the insulation detector 2. The negative electrode of 2 is electrically connected, and the insulation resistance unit 12 is connected in series with the negative electrode of the bus voltage unit 111 for alarming the grounding of the negative electrode of the insulation detector 2 . The adjustment range of the resistance value on the insulation resistance unit 12 is 0-999KΩ. By comparing the actual resistance value of the insulation resistance unit 12 itself with the resistance value detected on the insulation detector 2, if the insulation resistance unit 12 If the actual resistance value is greater than 50KΩ, and the insulation detector 2 alarms, it means that the grounding alarm function of the insulation detector 2 is reliable; if the actual resistance value of the insulation resistance unit 12 is greater than 50KΩ, the insulation detector 2 does not alarm , it means that the grounding alarm function of the insulation detector 2 is unreliable. Of course, in this embodiment, the on-off of each connection is also realized by the control unit 14 controlling the on and off of the switch.

In one embodiment, referring to FIG. 2 to FIG. 4 to understand, the insulation detector detection device 1 includes a housing 16 and an air plug connector 17 , the power supply unit 11 and the insulation resistance unit 12 are integrated in the housing 16 , and the housing 16 is provided with an air plug interface, and both the power supply unit 11 and the insulation resistance unit 12 are electrically connected to the air plug interface; one end of the air plug connector 17 is adapted to the air plug interface, and the other end of the air plug connector 17 is connected to the insulation detector 2 The interface on the upper part is adapted, and the insulation detector 2 is electrically connected with the power supply unit 11 and the insulation resistance unit 12 through the aerial plug connector 17 . Among them, the structure of one end of the air plug connector 17 that is adapted to the air plug connector 17 is shown in FIG. port. The third pin 173, the fourth pin 174 and the fifth pin 175 are the alarm signal ports; the ninth pin 176 is the ground port, the tenth pin 177 is the negative port of the bus power supply unit 11, and the twelfth pin 178 is the positive terminal of the bus power supply unit 11 . It should be noted that the housing 16 provided in this embodiment is a hand-held housing 16 , and the components of the entire detection device are integrated into the housing 16 , so that the entire detection device can be used by hand.

Further, as shown in FIG. 2 , the insulation detector detection device 1 further includes a display screen 18 , the display screen 18 is fixed on the housing 16 and is electrically connected with the information processing unit 13 and the insulation detector 2 , and the display screen 18 is used for Display the information processing result of the information processing unit 13 and the alarm result of the insulation detector 2; the housing 16 is also provided with an insulation resistance interface 161, a voltage interface 162 and an interface unit interface, the insulation resistance interface 161 is used for external insulation resistance, and the voltage interface 162 It is used for external series DC voltage or external series AC voltage, and the interface unit interface is used for external external multimeter or resistance box; the insulation detector detection device also includes an interface unit 15, the interface unit 15 and the power supply unit 11 and 11. The insulation resistance unit 12 is connected, and the interface unit 15 is electrically connected to the interface of the interface unit. The interface unit 15 is set. When the internal function is abnormal or faulty, the verification function cannot be completed through the predetermined program. At this time, the predetermined resistance value and voltage simulation function can be completed through the external interface. The external interface can realize the resistance box, DC voltage source and AC voltage source. Connect external devices such as voltage sources.

The information processing unit 13 is used to collect the actual output value of the DC voltage unit 113, the AC voltage unit 112 and the insulation resistance unit 12 and the detection value detected by the insulation detector 2, compare the actual output value with the detection value, and output the comparison result. The information processing unit 13 mainly collects the working conditions of the alarm contacts of the insulation detector 2 , and the operation conditions of the alarm contacts can also be visually displayed on the display screen 18 . The screen sets the status of the alarm light. When the alarm is triggered, it is displayed in red, and when the alarm is not triggered, it is displayed in green. For example, when the detection accuracy of the DC voltage exceeds the required range, an alarm is triggered.

The insulation detector detection device 1 provided by the present invention realizes one-key detection of all detection functions through a preset software program, including: negative electrode-to-ground voltage accuracy test; bus voltage accuracy test; AC voltage accuracy test; Alarm test; AC string power alarm test; grounding alarm test. For some parameters that need to be read by the insulation monitor to be tested, the data can be automatically judged and the report can be automatically generated by inputting the read value of the insulation monitor into the specific function test step, and the device can archive and save the calibration data. end.

The insulation detector detection device 1 provided by the present invention collects the corresponding parameters detected by the insulation detector 2 through the information processing unit 13, and compares them with the actual output values, so as to determine whether the detection accuracy of the insulation detector 2 meets the standard, and Generate reports. In this way, the automatic judgment of the detection data and the automatic generation and archiving of the report are realized. Through the cooperation of the control unit 14 and the switch unit, the on-off of the line between each unit in the insulation detection device and the insulation detector 2 is realized, thereby realizing the calibration of each parameter of the insulation detector 2 and the reliability calibration of the alarm function, Reduce personnel intervention and improve work efficiency. In addition, the insulation detector detection device 1 has the advantages of simple structure, small volume, light weight, and is easy to carry and use.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. An insulation detector detection device is characterized in that, the insulation detector detection device comprises a power supply unit, an insulation resistance unit and an information processing unit, and the power supply unit comprises: a busbar voltage unit for simulating a busbar voltage, and the busbar voltage unit is used for connecting with the power port of the insulation detector; an AC voltage unit capable of outputting AC voltage, and the AC voltage unit is connected to the port of the insulation detector; a DC voltage unit capable of outputting a DC voltage, and the DC voltage unit is connected to the port of the insulation detector; The information processing unit is electrically connected to the AC voltage unit, the DC voltage unit and the insulation resistance unit, and the information processing unit can collect and process the AC voltage unit, the DC voltage unit and the insulation resistance unit The actual output value of the resistance unit, the information processing unit is also connected to the port of the insulation detector to collect the input value detected by the insulation detector; Wherein, by comparing the actual output value and the input value, it is determined whether the detection accuracy of the insulation detector meets a preset threshold. 2 . The detection device of an insulation detector according to claim 1 , wherein when the bus voltage unit and the AC voltage unit are connected to the insulation detector, the actual output value of the AC voltage unit is compared with that of the insulation detector. 3 . The input values detected by the insulation detector are compared to test the AC voltage accuracy or the AC series power alarm of the insulation detector. 3 . The detection device of an insulation detector according to claim 2 , wherein the live wire of the AC voltage unit is connected to the negative pole of the insulation detector, and the neutral wire of the AC voltage unit is connected to the insulation detector. 4 . The ground wire of the instrument is connected to test the accuracy of the negative-to-ground AC voltage of the insulation detector; Alternatively, the live wire of the AC voltage unit is connected to the positive electrode of the insulation detector, and the neutral wire of the AC voltage unit is connected to the ground wire of the insulation detector, so as to be used for the detection of the insulation detector. The accuracy of the positive-to-ground AC voltage is tested; Alternatively, the AC voltage unit is connected in series with the busbar voltage unit, so as to be used for testing the AC series power alarm of the insulation detector. 4 . The insulation detector detection device according to claim 1 , wherein when the bus voltage unit and the DC voltage unit are connected to the insulation detector, the DC voltage unit is connected to the insulation detector. 5 . The actual output value of the insulation detector is compared with the input value detected by the insulation detector, so as to be used for testing the DC voltage accuracy or DC series power alarm of the insulation detector. 5 . The insulation detector detection device according to claim 4 , wherein the positive electrode of the DC voltage unit is connected to the positive electrode of the insulation detector, and the negative electrode of the DC voltage unit is connected to the insulation detector. 6 . The negative poles of the insulation tester are connected to each other to test the accuracy of the positive and negative DC voltages of the insulation detector; Alternatively, the positive pole of the DC voltage unit is connected to the positive pole of the insulation detector, and the negative pole of the DC voltage unit is connected to the ground wire of the insulation detector, so as to be used for the negative pole of the insulation detector. Test the ground DC voltage accuracy; Or, the positive pole of the DC voltage unit is connected to the ground wire of the insulation detector, and the negative pole of the DC voltage unit is connected to the negative pole of the insulation detector, so as to be used for the positive pole of the insulation detector. Test the ground DC voltage accuracy; Alternatively, the DC voltage unit is connected in series with the bus voltage unit, so as to be used for testing the DC series power alarm of the insulation detector. 6. The insulation detector detection device according to any one of claims 1 to 3, wherein the positive electrode of the bus voltage unit is electrically connected to the positive electrode of the insulation detector, and the negative electrode of the bus voltage unit is electrically connected to the positive electrode of the insulation detector. The negative pole of the insulation detector is electrically connected, and the insulation resistance unit is connected in series with the positive pole of the bus voltage unit, so as to alarm the positive pole of the insulation detector for grounding; Alternatively, the positive electrode of the bus voltage unit is electrically connected to the positive electrode of the insulation detector, the negative electrode of the bus voltage unit is electrically connected to the negative electrode of the insulation detector, and the insulation resistance unit is electrically connected to the negative electrode of the bus voltage unit. The negative poles are connected in series to alarm the negative pole of the insulation detector. 7 . The insulation detector detection device according to claim 1 , wherein the insulation detector detection device further comprises a switch unit and a control unit, and the switch unit is electrically connected to the control unit. 8 . , the control unit is used to control the on-off of the switch unit, and the switch unit is connected with the bus voltage unit, the AC voltage unit, the DC voltage unit and the insulation resistance unit with wires, so that all the The busbar voltage unit, the AC voltage unit, the DC voltage unit and the insulation resistance unit are connected or disconnected with the insulation detector. 8 . The detection device of an insulation detector according to claim 7 , wherein the switch unit comprises a plurality of switches, each of the switches is connected to the control unit by wires, the bus voltage unit, the AC voltage The unit, the DC voltage unit and the insulation resistance unit are respectively connected with at least one of the switches, and the control unit is used to control the switch on or off. 9. The insulation detector detection device according to any one of claims 1 to 3, wherein the insulation detector detection device comprises: A housing, the power supply unit, the insulation resistance unit and the information processing unit are all integrated in the housing, the housing is provided with an air plug interface, the power supply unit and the insulation resistance unit are all electrically connected to the air plug interface; an air plug connector, one end of the air plug connector is adapted to the air plug interface, and the other end of the air plug connector is adapted to the interface on the insulation detector, and the insulation detector passes the The aviation plug connector is electrically connected with the power supply unit and the insulation resistance unit. 10 . The detection device of an insulation detector according to claim 9 , wherein the detection device of the insulation detector further comprises a display screen, the display screen is fixed on the casing and is connected with the information processing unit 10 . is electrically connected with the insulation detector, and the display screen is used to display the information processing result of the information processing unit and the alarm result of the insulation detector; The housing is also provided with an insulation resistance interface, a voltage interface and an interface unit interface, the insulation resistance interface is used for external insulation resistance, and the voltage interface is used for external series DC voltage or external series AC voltage, the interface unit interface is used to connect an external multimeter or resistance box; The insulation detector detection device further includes an interface unit, the interface unit is connected to the power supply unit and the insulation resistance unit, and the interface unit is electrically connected to the interface unit.

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