Comprehensive detector for voltage transformer on-line monitoring device

Abstract

The utility model relates to a comprehensive detector for a voltage transformer on-line monitoring device. The comprehensive detector comprises a power source module, a clock synchronization module, a signal receiving module, a calculation module and an interface module, the power source module is connected with the clock synchronization module, the signal receiving module is connected with the calculation module, the calculation module is connected with the interface module, and the interface module is connected with the voltage transformer online monitoring device. By arranging the clock synchronization module, error detection and clock synchronization detection of a sampling unit are carried out on the voltage transformer on-line monitoring device after network operation, so that the sampling accuracy of the voltage transformer on-line monitoring device is ensured, deviation of a calculation result is avoided, and the reliability of the calculation result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of comprehensive detectors, in particular to a comprehensive detector for an online monitoring device of a voltage transformer. Background Art

[0002] At present, the voltage transformer online monitoring device is a kind of power secondary equipment. By collecting the output voltage signals of the metering windings of multiple voltage transformers in operation in the plant, the operating error value of each monitored voltage transformer is calculated locally. At present, the test and inspection standards for this equipment remain at the test detection, and there are no relevant inspection requirements for the voltage transformer online monitoring device after it is put into operation.

[0003] However, according to the working principle of the voltage transformer online monitoring device, when a fault occurs in the device itself, it will inevitably lead to deviations in the calculation results of the error value of the operating voltage transformer, resulting in unreliable calculation results. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a comprehensive detector for an online monitoring device of a voltage transformer, which has the advantage of being able to improve the reliability of calculation results and avoid deviations in calculation results.

[0005] The above-mentioned utility model object of the utility model is achieved through the following technical scheme: a comprehensive detector for a voltage transformer online monitoring device, including a power source module, a clock synchronization module, a signal receiving module, a calculation module, and an interface module; the power source module is connected to the clock synchronization module, the signal receiving module is connected to the calculation module, the calculation module is connected to the interface module, and the interface module is connected to the voltage transformer online monitoring device.

[0006] Preferably, in the comprehensive detector for the voltage transformer online monitoring device provided by the utility model, the interface module includes a main body and a plurality of connection units; one end of the plurality of connection units are all connected to the main body, and the plurality of connection units are spaced apart along the first direction of the main body.

[0007] Preferably, the utility model provides an integrated detector for an online monitoring device of a voltage transformer, wherein the main body comprises a shell and an installation panel, and one side of the installation panel is fitted and connected to an outer side wall of the shell; a plurality of interfaces are arranged on the installation panel, and the plurality of interfaces are arranged at intervals along the first direction, and the ends of the plurality of interfaces facing away from the installation panel all extend outward along the second direction of the main body, the interfaces are arranged in a one-to-one correspondence with the connecting units, and the ends of the interfaces facing away from the installation panel are connected to the connecting unit.

[0008] Preferably, the utility model provides a comprehensive detector for an online monitoring device of a voltage transformer, wherein the multiple interfaces include an output voltage source signal interface, an input voltage sampling value interface, an output calibration coefficient interface, an output simulated fault quantity interface and a multi-purpose standby expansion interface.

[0009] Preferably, in the comprehensive detector for the online monitoring device of the voltage transformer provided by the utility model, the connection unit includes a pin and a contact, one end of the pin is connected to the contact, and the other end of the pin is connected to an end of the interface away from the installation panel.

[0010] Preferably, in the comprehensive detector for the voltage transformer online monitoring device provided by the utility model, the pin is in the shape of a cone.

[0011] Preferably, in the comprehensive detector for the voltage transformer online monitoring device provided by the utility model, the plug pin is made of metal copper reed.

[0012] Preferably, in the comprehensive detector for the voltage transformer online monitoring device provided by the utility model, the contacts are made of metal copper.

[0013] Preferably, in the comprehensive detector for the online monitoring device of the voltage transformer provided by the utility model, the surface of the contact is silver-plated.

[0014] Preferably, in the comprehensive detector for the voltage transformer online monitoring device provided by the utility model, the interface is cylindrical.

[0015] To sum up, the beneficial technical effects of the utility model are as follows: the comprehensive detector for the online monitoring device of the voltage transformer provided in the present application includes a power source module, a clock synchronization module, a signal receiving module, a calculation module, and an interface module; the power source module is connected to the clock synchronization module, the signal receiving module is connected to the calculation module, the calculation module is connected to the interface module, and the interface module is connected to the online monitoring device of the voltage transformer; by setting the clock synchronization module, the error detection and clock synchronization detection of the sampling unit of the online monitoring device of the voltage transformer after the grid-connected operation are carried out to ensure the accuracy of the sampling of the online monitoring device of the voltage transformer, avoid deviations in the calculation results, and improve the reliability of the calculation results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides an overall structural block diagram of a comprehensive detector for an online monitoring device of a voltage transformer.

[0017] Figure 2 This is a schematic diagram of the structure of the interface module in the comprehensive detector for the voltage transformer online monitoring device provided by the embodiment of the utility model Figure 1 .

[0018] Figure 3 This is a schematic diagram of the structure of the interface module in the comprehensive detector for the voltage transformer online monitoring device provided by the embodiment of the utility model Figure 2 .

[0019] In the figure, 1. integrated detector; 10. power source module; 20. clock synchronization module; 30. signal receiving module; 40. calculation module; 50. interface module; 501. main body; 5011. shell; 5012. installation panel; 5013. output voltage source signal interface; 5014. input voltage sampling value interface; 5015. output calibration coefficient interface; 5016. output analog fault quantity interface; 5017. multi-purpose spare expansion interface; 502. connection unit; 5021. pin; 5022. contact; 60. first direction; 70. second direction. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Reference Figure 1 The utility model discloses a comprehensive detector 1 for an online monitoring device of a voltage transformer, comprising a power source module 10, a clock synchronization module 20, a signal receiving module 30, a calculation module 40, and an interface module 50; the power source module 10 is connected to the clock synchronization module 20, the signal receiving module 30 is connected to the calculation module 40, the calculation module 40 is connected to the interface module 50, and the interface module 50 is connected to the online monitoring device of the voltage transformer; by setting the clock synchronization module 20, the error detection and clock synchronization detection of the sampling unit of the online monitoring device of the voltage transformer after the online operation are carried out to ensure the accuracy of the sampling of the online monitoring device of the voltage transformer, avoid the deviation of the calculation result, and improve the reliability of the calculation result.

[0022] Specifically, the power source module 10 is used to output an AC voltage value of 80% to 120% of 57.7V to provide a voltage analysis signal for the voltage transformer online monitoring device.

[0023] The clock synchronization module 20 is used to receive Beidou / GPS / external synchronization clock, and output the synchronization clock to the voltage transformer online monitoring device using an absolute time synchronization mechanism.

[0024] The signal receiving module 30 is used to receive the voltage acquisition value of the voltage transformer online monitoring device through an optical fiber or a network cable, and read the digital value of the voltage transformer online monitoring device through an internal communication protocol.

[0025] The calculation module 40 is used to compare the output data of the calculation module 40 with the data value collected by each channel of the voltage transformer online monitoring device. The comparison data includes ratio difference and phase difference. At the same time, each channel automatically generates a channel calibration coefficient according to the comparison result, and finally sends the coefficient to the voltage transformer online monitoring device.

[0026] Continue to refer to Figure 2 and Figure 3 In this embodiment, the interface module 50 includes a main body 501 and a plurality of connection units 502 ; one ends of the plurality of connection units 502 are all connected to the main body 501 , and the plurality of connection units 502 are spaced apart along a first direction 60 of the main body 501 .

[0027] It should be noted that the first direction 60 of the body 501 is the length direction of the body 501 , the second direction 70 of the body 501 is the width direction of the body 501 , and the first direction 60 of the body 501 is perpendicular to the second direction 70 of the body 501 .

[0028] Furthermore, in this embodiment, the main body 501 includes a shell 5011 and an installation panel 5012, and one side of the installation panel 5012 is fitly connected to an outer wall of the shell 5011; a plurality of interfaces are arranged on the installation panel 5012, and the plurality of interfaces are arranged at intervals along a first direction 60, and the ends of the plurality of interfaces away from the installation panel 5012 all extend outward along a second direction 70 of the main body 501, and the interfaces are arranged one-to-one with the connection unit 502, and the ends of the interfaces away from the installation panel 5012 are connected to the connection unit 502.

[0029] The installation panel 5012 is a plug-in type panel. By setting the installation panel 5012, it is convenient to connect and remove the comprehensive detector 1 and the voltage transformer online monitoring device through plugging and unplugging.

[0030] It should be noted that the number of interfaces is substantially consistent with the number of connection units 502 .

[0031] Furthermore, in this embodiment, the multiple interfaces include an output voltage source signal interface 5013 , an input voltage sampling value interface 5014 , an output calibration coefficient interface 5015 , an output simulated fault quantity interface 5016 and a multi-purpose spare expansion interface 5017 .

[0032] Specifically, Figure 2 Taking the shown orientation as an example, the output voltage source signal interface 5013, the input voltage sampling value interface 5014, the output calibration coefficient interface 5015, the output simulated fault quantity interface 5016 and the multi-purpose spare expansion interface 5017 are arranged from right to left.

[0033] The output voltage source signal interface 5013 is used to output an adjustable voltage value of 80% to 120% of 57.7V, and the output voltage value itself can meet the accuracy requirement of 0.05 level.

[0034] The input voltage sampling value interface 5014 is used to collect the voltage value returned by the monitored device and send it to the calculation module 40 unit.

[0035] The output calibration coefficient interface 5015 is used to output the processed calibration coefficient and send the coefficient to the monitored device (ie, the voltage transformer online monitoring device).

[0036] The output simulated fault quantity interface 5016 is used to output a set simulated fault quantity value to the monitored device (ie, the voltage transformer online monitoring device) to verify the response of the device to the fault quantity.

[0037] The multi-purpose spare expansion interface 5017 is a spare multi-purpose expansion interface that can input / output other digital quantities.

[0038] Specifically, the output calibration coefficient interface 5015 is connected to the calculation module 40, and according to the actual usage scenario, the output voltage source signal interface 5013, the input voltage sampling value interface 5014, the output simulated fault quantity interface 5016 and the multi-purpose spare expansion interface 5017 are connected to the various interfaces of the voltage transformer online monitoring device.

[0039] Furthermore, in this embodiment, the connection unit 502 includes a pin 5021 and a contact 5022 , one end of the pin 5021 is connected to the contact 5022 , and the other end of the pin 5021 is connected to an end of the interface away from the installation panel 5012 .

[0040] For example, the pin 5021 may be in the shape of a cone. Of course, the pin 5021 may also be in the shape of a cylinder. In the implementation mode where the pin 5021 is in the shape of a cone, it is convenient to insert into the interface corresponding to the monitored device and can be plugged in with the wiring jack.

[0041] For example, the pin 5021 can be made of a metal copper reed. Of course, the pin 5021 can also be made of a copper alloy.

[0042] For example, the contact 5022 may be made of copper. Of course, the contact 5022 may also be made of copper alloy. In the implementation method where the contact 5022 is made of copper, the surface of the contact 5022 is silver-plated, that is, the surface of the copper is silver-plated; by silver-plating the surface of the contact 5022, the use frequency of the contact 5022 is increased, the contact effect is increased, and the conductor performance is enhanced.

[0043] Furthermore, in this embodiment, the interface is cylindrical.

[0044] Specifically, the center line of the interface is arranged in parallel with the center line of the pin 5021. In some practicable embodiments, the center line of the interface is arranged in a colinear relationship with the center line of the pin 5021.

[0045] Among them, the interface module 50 can be used with a variety of test lines with different interfaces at one end and wiring jacks at the other end. The pins 5021 can be reliably plugged into the wiring jack ends of the test lines respectively, and the monitored voltage transformer online monitoring device can be quickly connected to meet the complex scenarios where different functions are used at the same time. It can be quickly plugged in and out, and has good conductive performance.

[0046] The working principle of the comprehensive detector 1 for the voltage transformer online monitoring device provided in this embodiment is as follows: the power source module 10 outputs the AC voltage value to the voltage transformer online monitoring device through the output voltage source signal interface, and provides the voltage analysis signal for the voltage transformer online monitoring device; the clock synchronization module receives the Beidou or GPS or external synchronous clock, and outputs the synchronous clock to the voltage transformer online monitoring device through the multi-purpose spare expansion interface 5017 with an absolute time synchronization mechanism; the signal receiving module receives the voltage acquisition value of the voltage transformer online monitoring device, and inputs the voltage sampling value interface 50 14 collects the voltage value returned by the voltage transformer online monitoring device and sends it to the calculation module 40 unit. The calculation module 40 compares the output data of the calculation module 40 with the data value collected by each channel of the voltage transformer online monitoring device. Each channel automatically generates a channel calibration coefficient according to the comparison result, and sends the calibration coefficient to the voltage transformer online monitoring device through the output calibration coefficient interface 5015; the calculation module 40 outputs a set simulated fault value to the voltage transformer online monitoring device through the output simulated fault value interface 5016 to verify the response of the equipment to the fault value.

[0047] The comprehensive detector 1 for an online monitoring device of a voltage transformer provided in the present application includes a power source module 10, a clock synchronization module 20, a signal receiving module 30, a calculation module 40, and an interface module 50; the power source module 10 is connected to the clock synchronization module 20, the signal receiving module 30 is connected to the calculation module 40, the calculation module 40 is connected to the interface module 50, and the interface module 50 is connected to the online monitoring device of the voltage transformer; by setting the clock synchronization module 20, error detection and clock synchronization detection of the sampling unit of the online monitoring device of the voltage transformer after being put into operation are carried out to ensure the accuracy of sampling of the online monitoring device of the voltage transformer, avoid deviations in the calculation results, and improve the reliability of the calculation results.

[0048] The comprehensive detector 1 for an online monitoring device of a voltage transformer provided by the utility model has the following advantages: the device has a simple structure, is easy to manufacture, and is convenient to operate.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0050] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A comprehensive detector for an online monitoring device of a voltage transformer, characterized in that: It includes a power source module, a clock synchronization module, a signal receiving module, a calculation module, and an interface module; The power source module is connected to the clock synchronization module, the signal receiving module is connected to the calculation module, the calculation module is connected to the interface module, and the interface module is connected to the voltage transformer online monitoring device.

2. The comprehensive detector for online monitoring of voltage transformer according to claim 1, characterized in that: The interface module includes a body and a plurality of connection units; one end of each of the plurality of connection units is connected to the body, and the plurality of connection units are spaced apart along a first direction of the body.

3. The comprehensive detector for online monitoring of voltage transformer according to claim 2, characterized in that: The body comprises a shell and a mounting panel, one side of the mounting panel is fitted and connected to an outer side wall of the shell; A plurality of interfaces are arranged on the installation panel, and the plurality of interfaces are arranged at intervals along the first direction. The ends of the plurality of interfaces facing away from the installation panel extend outward along the second direction of the main body. The interfaces are arranged in a one-to-one correspondence with the connecting units, and the ends of the interfaces facing away from the installation panel are connected to the connecting unit.

4. The comprehensive detector for online monitoring of voltage transformer according to claim 3, characterized in that: The multiple interfaces include an output voltage source signal interface, an input voltage sampling value interface, an output calibration coefficient interface, an output analog fault quantity interface, and a multi-purpose spare expansion interface.

5. The comprehensive detector for online monitoring device of voltage transformer according to claim 4, characterized in that: The connection unit includes a pin and a contact, one end of the pin is connected to the contact, and the other end of the pin is connected to an end of the interface away from the installation panel.

6. The comprehensive detector for online monitoring of voltage transformer according to claim 5, characterized in that: The pin is cone-shaped.

7. The comprehensive detector for online monitoring device of voltage transformer according to claim 6, characterized in that: The pin is made of metal copper reed.

8. The comprehensive detector for online monitoring device of voltage transformer according to claim 7, characterized in that: The contact is made of metal copper.

9. The comprehensive detector for online monitoring device of voltage transformer according to claim 8, characterized in that: The surfaces of the contacts are silver plated.

10. The comprehensive detector for online monitoring of voltage transformer according to claim 3, characterized in that: The interface is cylindrical.

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