CN115877300A - Function calibration device and insulation monitoring system - Google Patents
Function calibration device and insulation monitoring system Download PDFInfo
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- CN115877300A CN115877300A CN202211521561.7A CN202211521561A CN115877300A CN 115877300 A CN115877300 A CN 115877300A CN 202211521561 A CN202211521561 A CN 202211521561A CN 115877300 A CN115877300 A CN 115877300A
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Abstract
The application relates to a function checking device and an insulation monitoring system. The function checking device comprises a capacitance module, a resistance module and a control module; the control module is used for generating a first control signal and a second control signal according to the external verification instruction; the capacitance module is used for generating a preset capacitance value according to the received first control signal so as to simulate a capacitance verification mode; the resistance module is used for generating a preset resistance value according to the received second control signal so as to simulate a resistance verification mode; the control module is used for verifying the test voltage values detected by the insulation monitoring device working in different verification modes according to at least one of a preset capacitance value and a preset voltage value, wherein the verification mode of the insulation monitoring device is the same as the verification mode simulated by the function verification device. Adopt this device can verify whether insulating monitoring devices's function is normal.
Description
Technical Field
The application relates to the technical field of electric power systems, in particular to a function checking device and an insulation monitoring system.
Background
The insulation monitoring device is a main monitoring device in a direct current system of a power plant, a converter station, a substation and the like, and can detect whether abnormal conditions such as grounding and the like exist, so that serious consequences such as misoperation, operation failure, short circuit and the like caused by grounding faults are avoided.
The existing manufacturers for designing the insulation monitoring equipment have different design methods and detection principles and different quality, and the wrong detection mode can influence the running safety of a direct current system, so that the function verification of the insulation monitoring equipment is very important.
Disclosure of Invention
In view of the above, it is necessary to provide a function verification apparatus and an insulation monitoring system capable of verifying whether the function of the insulation monitoring device is abnormal.
In order to achieve the above and other objects, an aspect of the present application provides a function verifying apparatus for verifying a detection capability of an insulation monitoring apparatus, the function verifying apparatus including a capacitance module, a resistance module, and a control module;
the control module is used for generating a first control signal and a second control signal according to an external checking instruction; the first end of the capacitor module is connected with the positive bus, the second end of the capacitor module is connected with the negative bus, the third end of the capacitor module is grounded, the control end of the capacitor module is connected with the control module, and the capacitor module is used for generating a preset capacitance value according to the received first control signal so as to simulate a capacitor checking mode;
the first end of the resistance module is connected with the positive bus, the second end of the resistance module is connected with the negative bus, the third end of the resistance module is grounded, the control end of the resistance module is connected with the control module, and the resistance module is used for generating a preset resistance value according to the received second control signal so as to simulate a resistance verification mode;
the control module is used for verifying the test voltage values detected by the insulation monitoring device working in different verification modes according to at least one of a preset capacitance value and a preset voltage value, wherein the verification mode of the insulation monitoring device is the same as the verification mode simulated by the function verification device.
In one embodiment, the external verification instruction comprises an offline verification instruction; the control module is further used for generating a direct-current voltage signal according to the off-line checking instruction and sending the direct-current voltage signal to the insulation monitoring device; the insulation monitoring device is also used for working under the action of the direct-current voltage signal.
In one embodiment, the offline verification instruction comprises an alternating current fleeing experiment instruction; the control module is also used for generating an alternating current voltage signal and an alternating current channeling experiment signal according to the alternating current channeling experiment instruction; the function verifying unit further comprises:
the first end of the switch module is connected with the positive bus, the second end of the switch module is connected with the negative bus, the third end of the switch module is grounded through the control module, and the switch module is used for selectively conducting any one of the passages between the control module and the positive bus and between the control module and the negative bus according to the alternating current channeling experimental signal;
the control module is also used for verifying the alternating current channeling test voltage value detected by the alternating current voltage signal after the insulation monitoring device enters a working state under the action of the direct current voltage signal.
In one embodiment, the switch module comprises a first switch unit and a second switch unit;
the first end of the first switch unit is connected with the positive bus, and the control end of the first switch unit is connected with the control module;
the first end of the second switch unit is connected with the negative bus, the second end of the second switch unit is connected with the second end of the first switch unit, and the control end of the second switch unit is connected with the control module.
In one embodiment, the control module comprises:
the analog-to-digital conversion unit is used for performing analog-to-digital conversion processing on the received voltage signal to generate a digital signal;
the data processing unit is connected with the analog-to-digital conversion unit and used for carrying out logic conversion according to the external verification instruction under the action of the digital signal to generate a logic instruction;
and the switching value unit is connected with the data processing unit and used for switching on or switching off an internal logic contact according to the logic instruction so as to generate the first control signal and the second control signal.
In one embodiment, the function verifying apparatus further includes:
and the power supply conversion module is connected with the control module and used for receiving an external power supply signal and performing voltage conversion on the external power supply signal so as to output the voltage signal to the control module.
In one embodiment, the control module is further configured to process the voltage signal according to the offline verification instruction to generate the dc voltage signal.
In one embodiment, the control module is further configured to process the voltage signal according to the ac ingress experiment instruction to generate the ac voltage signal.
In one embodiment, the apparatus further comprises:
and the display module is connected with the control module and used for displaying the test voltage value and the verification result.
Another aspect of the present application provides an insulation monitoring system, including the function verification device according to any one of the embodiments of the present application;
the function verifying device is connected with the insulation monitoring device and used for verifying the detection capability of the insulation monitoring device.
According to the function checking device and the insulation monitoring system, the capacitor module generates a preset capacitance value according to the first control signal in a simulation capacitor checking mode, the resistor module generates a preset resistance value according to the second control signal in a simulation resistor checking mode, and the control module checks test voltage values detected by the insulation monitoring device in different checking modes according to at least one of the preset capacitance value and the preset voltage value so as to judge whether the functions of the insulation monitoring device in various checking modes are normal or not, so that potential safety hazards of a direct current system caused by failure of the insulation monitoring device are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of a function verification apparatus provided in an embodiment of the present application;
fig. 2 is a block diagram of a function verifying apparatus provided in another embodiment of the present application;
fig. 3 is a block diagram of a function verifying apparatus provided in another embodiment of the present application;
fig. 4 is a block diagram of a function verifying apparatus provided in yet another embodiment of the present application;
fig. 5 is a block diagram of an insulation monitoring system provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of a display module for online testing of a function verification apparatus according to an embodiment of the present application;
fig. 7 is a schematic diagram of a display module for offline testing of a function verification apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a function verification apparatus provided in an embodiment of the present application.
Description of the reference numerals:
10. a function verifying device; 11. a capacitive module; 12. a resistance module; 13. a control module; 131. an analog-to-digital conversion unit; 132. a data processing unit; 133. a switching value unit; 14. a switch module; 141. a first switch unit; 142. a second switching unit; 15. a power conversion module; 16. a display module; 50. an insulation monitoring system; 51. an insulation monitoring device.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. In addition, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", and the like if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," or "having," and the like, specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
In one embodiment, as shown in fig. 1, a function verifying device 10 is provided for verifying the detection capability of an insulation monitoring device, wherein the function verifying device 10 comprises a capacitance module 11, a resistance module 12 and a control module 13; the control module 13 is configured to generate a first control signal and a second control signal according to an external verification instruction. The external verification instruction is an instruction generated according to a preset verification mode, the preset verification mode includes but is not limited to a positive grounding mode, a negative grounding mode, a two-stage grounding mode, a voltage precision measurement mode, a balanced bridge detection mode and the like, and the positive grounding instruction, the negative grounding instruction, the two-stage grounding instruction, the voltage precision measurement instruction and the balanced bridge detection instruction are correspondingly generated. The control module 13 generates a first control signal to control the capacitor module 11 to access the capacitance value in the preset verification mode according to the external verification instruction, and generates a second control signal to control the resistor module 12 to access the resistance value in the preset verification mode.
The first end of the capacitor module 11 is connected to the positive bus, the second end of the capacitor module 11 is connected to the negative bus, the third end of the capacitor module 11 is grounded, the control end of the capacitor module 11 is connected to the control module 13, and the capacitor module 11 is configured to generate a preset capacitance value according to the received first control signal so as to simulate a capacitor calibration mode. The capacitor module 11 includes a plurality of capacitor branches, each of the branches includes at least one capacitor, and the capacitor module 11 selects at least one capacitor branch to be connected between the positive bus and the negative bus according to the first control signal, so as to generate a preset capacitance value.
The first end of the resistor module 12 is connected to the positive bus, the second end of the resistor module 12 is connected to the negative bus, the third end of the resistor module 12 is grounded, the control end of the resistor module 12 is connected to the control module 13, and the resistor module 12 is configured to generate a preset resistance value according to the received second control signal to simulate a resistor verification mode. The resistance module 12 includes a plurality of resistance branches, each branch includes at least one resistance, and the resistance module 12 is connected between the positive bus and the negative bus according to the first control signal, so as to generate a preset resistance value.
The control module 13 is configured to verify the test voltage values detected by the insulation monitoring device in different verification modes according to at least one of a preset capacitance value and a preset voltage value, where the verification mode of the insulation monitoring device is the same as the verification mode simulated by the function verification device. The checking mode corresponds to the checking mode, namely the checking mode corresponding to the preset checking mode is obtained through the combination of the preset capacitance value and the preset resistance value, the preset resistance value and the preset capacitance value are connected between a positive bus and a negative bus of a direct current system of the insulation monitoring device, the insulation monitoring device is enabled to work in the preset mode, and the test voltage values in different modes are checked to judge whether the functions of the insulation monitoring device in different modes are normal or not.
According to the function verifying device 10, the capacitor module 11 generates a preset capacitance value according to the first control signal to simulate a capacitor verifying mode, the resistor module 12 generates a preset resistance value according to the second control signal to simulate a resistor verifying mode, and the control module 13 verifies test voltage values detected by the insulation monitoring device in different verifying modes according to at least one of the preset capacitance value and the preset voltage value, so as to judge whether the functions of the insulation monitoring device in various verifying modes are normal, thereby avoiding potential safety hazards of a direct current system caused by failure of the insulation monitoring device.
Optionally, the external verification instruction includes an offline verification instruction; the control module 13 is further configured to generate a dc voltage signal according to the offline checking instruction, and send the dc voltage signal to the insulation monitoring device; the insulation monitoring device is also used for working under the action of the direct-current voltage signal.
The preset checking mode may include an online mode and an offline mode, and the online mode and the offline mode include, but are not limited to, the positive ground mode, the negative ground mode, the two-stage ground mode, the voltage precision measurement mode, the balanced bridge detection mode, and the like. The positive bus and the negative bus are an original direct current system of the insulation monitoring device in the online mode, and whether the functions of the insulation monitoring device in different verification modes in the original direct current system are normal is judged through the control module 13; the insulation monitoring device is separated from the original direct current system in an off-line mode, the positive bus and the negative bus are the analog direct current system provided by the control module 13, and the direct current voltage signal generated by the control module 13 is used for supplying power to the insulation monitoring device.
According to the function verification device 10, the direct-current voltage signal generated by the control module 13 can supply power to the insulation monitoring device, so that a simulated direct-current system is provided for the insulation monitoring device, the insulation monitoring device is separated from the original direct-current system and is connected into the simulated direct-current system, and offline verification of the insulation monitoring device is realized.
As shown in fig. 2, in one embodiment, the offline check instruction includes an alternating current fleeing experiment instruction; the control module 13 is further configured to generate an ac voltage signal and an ac ingress experiment signal according to the ac ingress experiment instruction. The off-line mode further includes an ac ingress mode, the ac ground detection function of the insulation monitoring device can be verified in the off-line state in response to the ac ingress experiment instruction, and an ac voltage signal generated by the control module 13 is applied to the dc power supply to implement ac ingress.
The function verifying device 10 further includes a switch module 14, a first end of the switch module 14 is connected to the positive bus, a second end of the switch module 14 is connected to the negative bus, a third end of the switch module 14 is grounded through the control module 13, and the switch module 14 is configured to selectively turn on any one of the paths between the control module 13 and the positive bus or the negative bus according to the ac ingress experiment signal. The switching module 14 includes a first switching unit 141 and a second switching unit 142; a first end of the first switch unit 141 is connected to the positive bus, and a control end of the first switch unit 141 is connected to the control module 13; a first end of the second switch unit 142 is connected to the negative bus, a second end of the second switch unit 142 is connected to a second end of the first switch unit 141, and a control end of the second switch unit 142 is connected to the control module 13. Wherein, whether the alternating current voltage signal is applied to the positive power terminal or the negative power terminal of the direct current system is realized by the on and off of the first switch unit 141 and the second switch unit 142; when the alternating-current voltage signal needs to be connected to the positive bus, the control module 13 generates a positive alternating-current channeling experimental signal to control the first switch unit 141 to be closed and the second switch to be opened; when the alternating voltage signal needs to be connected to the negative bus, the control module 13 generates a negative alternating current channeling experimental signal to control the first switch unit 141 to be opened and the second switch to be closed.
The control module 13 is further configured to verify an ac breakthrough test voltage value detected by the ac voltage signal after the insulation monitoring device enters a working state under the action of the dc voltage signal.
According to the function verifying device 10, the control module 13 generates an alternating current channeling experimental signal according to the alternating current channeling experimental instruction, the first switch unit 141 and the second switch unit 142 are controlled to be switched on and off through the alternating current channeling experimental signal to achieve the on and off of the switch module 14 and the positive bus and the negative bus, so that the alternating current voltage signal is controlled to be switched in the positive bus or the negative bus of the direct current system, and then the control module 13 verifies whether the function of the insulation monitoring device in the alternating current channeling mode is normal.
As shown in fig. 3, in an embodiment, the function verifying apparatus 10 further includes a power conversion module 15, connected to the control module 13, for receiving an external power signal and performing voltage conversion on the external power signal to output the voltage signal to the control module 13. The external power signal may be an external ac mains supply, and the power conversion module 15 transforms and isolates the external power signal to generate a voltage signal, so that the control module 13 enters a working state.
Optionally, the voltage signal includes an ac power signal and a dc power signal, and the continuously adjustable ac/dc power output is realized through the voltage conversion module.
The control module 13 includes an analog-to-digital conversion unit 131, a data processing unit 132, and a switching value unit 133. The analog-to-digital conversion unit 131 is configured to perform an analog-to-digital conversion process on the received voltage signal to generate a digital signal. The analog-to-digital conversion unit 131 may include an analog-to-digital converter, and analog-to-digital converts the analog signal voltage signal into a digital signal that can be processed by the data processing unit.
The data processing unit 132 is connected to the analog-to-digital conversion unit 131, and configured to perform logic transformation according to the external verification instruction under the action of the digital signal to generate a logic instruction.
The switching value unit 133 is connected to the data processing unit 132, and configured to turn on or off an internal logic node according to the logic command to generate the first control signal and the second control signal. And then, the preset resistance value and the preset capacitance value are accessed into the original direct current system or the analog direct current system through the first control signal and the second control signal so as to verify whether the insulation monitoring device has normal functions in various preset verification modes.
Optionally, when the preset verification mode is the offline mode, the control module 13 may further process the voltage signal according to the offline verification instruction to generate the dc voltage signal, so that the insulation monitoring device operates under the action of the dc voltage signal, and verify whether the function of the insulation monitoring device in the preset mode in the offline mode is normal.
Optionally, when the preset check mode is an ac ingress mode in the offline mode, the control module 13 may further process the voltage signal according to the ac ingress experiment instruction to generate the ac voltage signal and access the ac voltage signal to the analog dc system, so as to check whether the ac ingress function of the insulation monitoring device is normal.
In the function verifying device 10, the voltage converting module 15 generates an adjustable ac/dc voltage signal, the analog-to-digital converting unit 131 converts the analog signal into a digital signal that can be processed by the data processing unit, and the data processing unit 132 processes the digital signal according to an external verifying instruction, so that the control module 13 generates a dc voltage signal or an ac voltage signal in an offline mode and provides the dc voltage signal or the ac voltage signal to the insulation monitoring device, and generates a logic instruction in various modes to control a preset voltage value and a preset capacitance value accessed to the dc system, thereby determining whether the function of the insulation monitoring device in each preset mode is normal.
As shown in fig. 4, in an embodiment, the function verifying apparatus 10 further includes a display module 16, connected to the control module 13, for displaying the test voltage value and the verification result. The test voltage value comprises a voltage value to ground, the verification result comprises but is not limited to signal amplitude change, signal frequency change, signal power change and the like of the test voltage, and an image is generated according to various changes, so that a worker can visually judge whether the function of the insulation monitoring device is normal or not according to the image.
In the function verifying device 10, after the control module 13 acquires the test voltage value, data analysis is performed on the test voltage value to generate a verification result, the verification result is sent to the display module 16, and a worker judges whether the function of the insulation monitoring device is normal or not through the display module 16.
Referring to fig. 5, in one embodiment, there is provided an insulation monitoring system comprising an insulation monitoring device 51 and a functional verification device 10 as described in any of the above embodiments; the function verifying device 10 is connected to the insulation monitoring device 51, and is configured to verify the detection capability of the insulation monitoring device 51.
The function checking device 10 is divided into an online mode and an offline mode, and in the online mode, the function checking device 10 is connected to the original direct current system of the insulation monitoring device 51; in the off-line mode, the function verification device 10 generates an analog dc system, and disconnects the insulation monitoring device 51 from the original dc system and connects the same to the analog dc system for verification. Both the online mode and the offline mode include a plurality of verification modes as shown in fig. 6 and 7. Referring to fig. 8, when detecting the item on line, the first switch unit 141 and the second switch unit 142 are turned off, and no ac voltage signal is generated to the insulation monitoring device 51; during the ac grounding test in the offline item, any one of the first switch unit 141 and the second switch unit 142 is closed, and an ac voltage signal is generated to the insulation monitoring device 51; other test items are selected by combining, arranging and sizing the right ground insulation resistor R1, the negative ground insulation resistor R2, the positive ground distribution capacitor C1 and the negative ground distribution capacitor C2, wherein the resistor module 12 not only has two resistors, but also only uses R1 and R2 to represent the result after the combination of the branch resistors, the capacitor module 11 not only has two capacitors, but also uses C1 and C2 to represent the result after the combination of the branch capacitors, an online mode or an offline mode is selected on the display module, and the values of R1, R2, C1 and C2 are input to provide a simulation test scene for the insulation monitoring device 51 after selecting a specific test mode. The positive grounding mode can test the positive grounding test precision and the positive grounding alarm precision of the insulation monitoring device 51; a negative grounding mode, which can test the negative grounding test precision and the negative grounding alarm precision of the insulation monitoring device 51; in the bipolar grounding mode, the bipolar grounding function of the insulation monitoring device 51 can be detected, and a user can set bipolar grounding impedance by himself; in the voltage precision measurement mode, a user can set a plurality of voltage test points to test the voltage measurement precision of the insulation monitoring device 51; in the voltage out-of-limit warning mode (which can be selected only in the off-line mode), a user can detect the voltage out-of-limit warning function of the insulation monitoring device 51 by setting and changing the output voltage of the adjustable direct-current voltage system in the device; an ac ground test function (selectable only in an offline mode, i.e., the ac ingress mode) that can be used to verify the ac ground detection function of the insulation monitoring device 51; in the balanced bridge detection mode, a user can detect the sizes of the positive ground insulation resistor, the negative ground insulation resistor and the balanced bridge of the insulation detection device or the original direct current system; the signal analysis mode can analyze the signal amplitude, frequency, power and other parameters of the insulation monitoring device 51 through the function of the insulation detection device which needs to perform the grounding detection through the signaling.
In the insulation monitoring system, the function verifying device 10 may verify each function of the insulation monitoring device 51 in the original dc system, or may provide the insulation monitoring device 51 with a simulated dc system to verify each function of the insulation monitoring device 51 in the simulated dc system.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The function verifying device is used for verifying the detection capability of the insulation monitoring device and comprises a capacitance module, a resistance module and a control module;
the control module is used for generating a first control signal and a second control signal according to an external verification instruction;
the first end of the capacitor module is connected with the positive bus, the second end of the capacitor module is connected with the negative bus, the third end of the capacitor module is grounded, the control end of the capacitor module is connected with the control module, and the capacitor module is used for generating a preset capacitance value according to the received first control signal so as to simulate a capacitor checking mode;
the first end of the resistor module is connected with the positive bus, the second end of the resistor module is connected with the negative bus, the third end of the resistor module is grounded, the control end of the resistor module is connected with the control module, and the resistor module is used for generating a preset resistance value according to the received second control signal so as to simulate a resistor check mode;
the control module is used for verifying the test voltage values detected by the insulation monitoring device working in different verification modes according to at least one of a preset capacitance value and a preset voltage value, wherein the verification mode of the insulation monitoring device is the same as the verification mode simulated by the function verification device.
2. The functional verification device of claim 1, wherein the external verification instruction comprises an offline verification instruction; the control module is further configured to generate a direct-current voltage signal according to the offline verification instruction, and send the direct-current voltage signal to the insulation monitoring device, so as to instruct the insulation monitoring device to operate in a corresponding verification mode according to the direct-current voltage signal.
3. The function verification device of claim 2, wherein the offline verification instruction comprises an alternating current fleeing experiment instruction; the control module is also used for generating an alternating current voltage signal and an alternating current fleeing into experiment signal according to the alternating current fleeing into experiment instruction; the function verifying apparatus further includes:
the first end of the switch module is connected with the positive bus, the second end of the switch module is connected with the negative bus, the third end of the switch module is grounded through the control module, and the switch module is used for selectively conducting any one of the passages between the control module and the positive bus and between the control module and the negative bus according to the alternating current channeling experimental signal;
the control module is also used for verifying the alternating current channeling test voltage value detected by the alternating current voltage signal after the insulation monitoring device enters a working state under the action of the direct current voltage signal.
4. The function verifying apparatus of claim 3, wherein the switch module comprises a first switch unit and a second switch unit;
the first end of the first switch unit is connected with the positive bus, and the control end of the first switch unit is connected with the control module;
the first end of the second switch unit is connected with the negative bus, the second end of the second switch unit is connected with the second end of the first switch unit, and the control end of the second switch unit is connected with the control module.
5. The function verifying apparatus as claimed in claim 2, wherein the control module comprises:
the analog-to-digital conversion unit is used for performing analog-to-digital conversion processing on the received voltage signal to generate a digital signal;
the data processing unit is connected with the analog-to-digital conversion unit and used for carrying out logic conversion according to the external verification instruction under the action of the digital signal to generate a logic instruction;
and the switching value unit is connected with the data processing unit and used for switching on or switching off an internal logic contact according to the logic instruction so as to generate the first control signal and the second control signal.
6. The function verifying apparatus as claimed in claim 5, further comprising:
and the power supply conversion module is connected with the control module and used for receiving an external power supply signal and performing voltage conversion on the external power supply signal so as to output the voltage signal to the control module.
7. The functional verification device of claim 2, wherein the control module is further configured to process the received voltage signal according to the offline verification instruction to generate the dc voltage signal.
8. The function verification device of claim 3, wherein the control module is further configured to process the received voltage signal according to the ac ingress experiment command to generate the ac voltage signal.
9. The function verifying apparatus as claimed in claim 1, further comprising:
and the display module is connected with the control module and used for displaying the test voltage value and the verification result.
10. An insulation monitoring system comprising an insulation monitoring device and a function verification device as claimed in any one of claims 1 to 9;
the function verifying device is connected with the insulation monitoring device and used for verifying the detection capability of the insulation monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211521561.7A CN115877300A (en) | 2022-11-30 | 2022-11-30 | Function calibration device and insulation monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211521561.7A CN115877300A (en) | 2022-11-30 | 2022-11-30 | Function calibration device and insulation monitoring system |
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| CN202211521561.7A Pending CN115877300A (en) | 2022-11-30 | 2022-11-30 | Function calibration device and insulation monitoring system |
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