CN211928149U - On-spot checking device of current type on-line monitoring equipment - Google Patents
On-spot checking device of current type on-line monitoring equipment Download PDFInfo
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- CN211928149U CN211928149U CN202020323460.9U CN202020323460U CN211928149U CN 211928149 U CN211928149 U CN 211928149U CN 202020323460 U CN202020323460 U CN 202020323460U CN 211928149 U CN211928149 U CN 211928149U
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Abstract
The utility model discloses a device is checked on-spot to current type on-line monitoring equipment, including control module, output module and multi-functional voltage current signal generator, multi-functional voltage current signal generator includes current signal generator, reference voltage generator, detection current output module and reference voltage output module, control module respectively with output module, current signal generator, reference voltage generator links to each other, current signal generator's output links to each other with detection current output module, reference voltage generator's output and reference voltage output module link to each other. The utility model discloses can realize the on-the-spot check of multiple current type on-line monitoring equipment, check as an all-in-one and equip, effectively reduce the volume and the weight of equipping, the instrument wiring also can share one set, and on-the-spot check is convenient fast moreover, can conveniently acquire on-the-spot check result according to the check out test set data.
Description
Technical Field
The utility model relates to a power equipment, concretely relates to on-spot check device of current type on-line monitoring equipment.
Background
Along with the construction of ubiquitous power internet, a large number of online monitoring devices are installed in the current transformer substation, such as lightning arrester leakage current online monitoring, transformer core clamp current online monitoring, capacitive equipment capacitive current online monitoring, high-frequency current online monitoring and the like. The online monitoring devices have various types and irregular quality levels, and are operated in outdoor high-temperature high-humidity and strong-electromagnetic compatible environments for a long time, so that the problems of short service life, performance reduction, low reliability and the like often occur.
At present, most of the on-line monitoring devices are only checked in a laboratory before operation, and cannot be checked after field operation, and the main reasons are as follows: (1) the disassembly can be carried out and the disassembly is carried out and checked in a laboratory only when power is cut off, and the disassembly is often limited by power cut time and is not checked; (2) there are no sophisticated verification devices for field verification.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: aiming at the problems in the prior art, the utility model provides a field checking device for current type on-line monitoring equipment, which can realize the field checking of various current type on-line monitoring equipment, for example, the field checking of lightning arrester leakage current on-line monitoring equipment, transformer core clamp current on-line monitoring equipment, capacitive equipment capacitive current on-line monitoring equipment and high-frequency current on-line monitoring equipment, and as a four-in-one checking equipment, the volume and the weight of the equipment are effectively reduced, the instrument wiring can also share one set, and the field checking is fast and convenient, so that the field checking result can be conveniently obtained according to the data of the detection equipment; the utility model discloses can improve power equipment on-line monitoring equipment's accuracy and reliability, in time master power equipment's running state, further enlarge and develop preventing and reducing power equipment trouble, correctly guide its maintenance work.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a device is checked on-spot to current type on-line monitoring equipment, includes control module, output module and multi-functional voltage current signal generator, multi-functional voltage current signal generator includes current signal generator, reference voltage generator, detection current output module and reference voltage output module, control module links to each other with output module, current signal generator, reference voltage generator respectively, current signal generator's output and detection current output module link to each other, reference voltage generator's output and reference voltage output module link to each other.
Optionally, the current signal generator has the following current signal generation function: (a) the current signal is suitable for checking the lightning arrester on-line monitoring equipment, the effective value range of the full current is 0.1-50mA, and the peak value range of the resistive current fundamental wave is 0.01-10 mA; (b) the method is suitable for online monitoring, setting and checking of capacitance current of the capacitance type equipment, and the effective value range of the total current is 2-1000 mA; (c) the current signal is suitable for checking by the transformer core clamp current on-line monitoring equipment, and the range of the secondary value is 5 mA-10A; (d) the device is suitable for checking current signals of high-frequency current on-line monitoring equipment, the frequency range is 3-30MHz, and the amplitude range is 0.01-10 mA; (e) a harmonic signal can be generated that can be output alone or in combination with any of the aforementioned current signals, the harmonic signal being one of a3 rd, or 5 th, or 7 th, or 9 th, or 11 th harmonic signal.
Optionally, the reference voltage generator has the following voltage signal generation function: (a) the voltage signal which is suitable for the online monitoring equipment check of the lightning arrester has a voltage range of 0-100V and a phase angle of 45-90 degrees with the current signal; (b) the voltage signal is suitable for being checked by capacitive equipment capacitive current on-line monitoring equipment, the voltage range is 0-100V, and the phase angle between the voltage signal and the current signal is 75-90 degrees.
Optionally, the output module is a display screen.
Compared with the prior art, the utility model discloses the on-spot check device of current type on-line monitoring equipment has following advantage:
1. the utility model discloses on-spot check device of current type on-line monitoring equipment has integrateed many kinds of current type on-line monitoring equipment such as arrester on-line monitoring equipment, electric capacity type equipment electric capacity electric current on-line monitoring equipment, transformer core folder electric current on-line monitoring equipment, high frequency current on-line monitoring check, has reduced the weight and the volume of check equipment greatly, and the on-the-spot work of checking of being convenient for is carried out, has improved work efficiency.
2. The utility model discloses on-spot check device of current type on-line monitoring equipment has provided the on-the-spot check of current type on-line monitoring equipment, can accurately check current type on-line monitoring equipment, improves power equipment on-line monitoring equipment's accuracy and reliability, in time masters power equipment's running state, to preventing and reducing power equipment trouble further enlarge and development, correctly guide its maintenance work.
Drawings
Fig. 1 is the utility model discloses in the embodiment on-site checking device of current type on-line monitoring equipment's structural schematic diagram.
Fig. 2 is the utility model discloses in the embodiment on-the-spot check device of electric current type on-line monitoring equipment application principle schematic diagram.
Illustration of the drawings: 1. a control module; 2. an output module; 3. a multifunctional voltage current signal generator; 31. a current signal generator; 32. a reference voltage generator; 33. a detection current output module; 34. a reference voltage output module; 4. lightning arrester on-line monitoring equipment; 5. capacitive equipment capacitive current on-line monitoring equipment; 6. the transformer core clamping piece current on-line monitoring equipment; 7. high-frequency current on-line monitoring equipment.
Detailed Description
As shown in fig. 1, the on-site calibration apparatus for current-mode online monitoring equipment in this embodiment includes a control module 1, an output module 2, and a multifunctional voltage-current signal generator 3, where the multifunctional voltage-current signal generator 3 includes a current signal generator 31, a reference voltage generator 32, a detection current output module 33, and a reference voltage output module 34, the control module 1 is respectively connected to the output module 2, the current signal generator 31, and the reference voltage generator 32, an output end of the current signal generator 31 is connected to the detection current output module 33, and an output end of the reference voltage generator 32 is connected to the reference voltage output module 34.
In this embodiment, the control module 1 is configured to control the operating states of the current signal generator 31 and the reference voltage generator 32, for example, adjust the amplitude and the frequency of the detection current generated by the current signal generator 31, adjust the harmonic content of the detection current 3 times, 5 times, 7 times, 9 times, and 11 times, and adjust the amplitude of the reference voltage generated by the reference voltage generator 32 and the phase angle with the detection current signal. In this embodiment, the output module 2 is specifically a display screen, which facilitates real-time display and output.
In the present embodiment, the current signal generator 31 has the following current signal generating function: (a) the current signal is suitable for checking the lightning arrester on-line monitoring equipment, the effective value range of the full current is 0.1-50mA, and the peak value range of the resistive current fundamental wave is 0.01-10 mA; (b) the method is suitable for online monitoring, setting and checking of capacitance current of the capacitance type equipment, and the effective value range of the total current is 2-1000 mA; (c) the current signal is suitable for checking by the transformer core clamp current on-line monitoring equipment, and the range of the secondary value is 5 mA-10A; (d) the device is suitable for checking current signals of high-frequency current on-line monitoring equipment, the frequency range is 3-30MHz, and the amplitude range is 0.01-10 mA; (e) a harmonic signal can be generated that can be output alone or in combination with any of the aforementioned current signals, the harmonic signal being one of a3 rd, or 5 th, or 7 th, or 9 th, or 11 th harmonic signal.
In this embodiment, the reference voltage generator 32 has the following voltage signal generation function: (a) the voltage signal which is suitable for the online monitoring equipment check of the lightning arrester has a voltage range of 0-100V and a phase angle of 45-90 degrees with the current signal; (b) the voltage signal is suitable for being checked by capacitive equipment capacitive current on-line monitoring equipment, the voltage range is 0-100V, and the phase angle between the voltage signal and the current signal is 75-90 degrees.
The detection current output module 33 is configured to output a detection current signal.
The reference voltage output module 34 is used for outputting a reference voltage signal.
As shown in fig. 2, the on-site verification device for current-type online monitoring equipment of this embodiment can be used to implement on-site verification of the lightning arrester online monitoring equipment 4, the capacitive-type equipment capacitive current online monitoring equipment 5, the transformer core clamp current online monitoring equipment 6, and the high-frequency current online monitoring equipment 7. Referring to fig. 2, the detection current signals are respectively input to the current detection sensors of the lightning arrester on-line monitoring device 4, the capacitive device capacitive current on-line monitoring device 5, the transformer core clamp current on-line monitoring device 6 and the high-frequency current on-line monitoring device 7; reference voltage signals are respectively input to voltage measurement terminals of the lightning arrester online monitoring equipment 4 and the capacitive equipment capacitive current online monitoring equipment 5.
In addition, the step of using the on-site checking device of the current type online monitoring equipment of the embodiment for on-site checking of the lightning arrester online monitoring equipment 4 includes:
A1) the detection current output module 33 and the reference voltage output module 34 are respectively connected with the checked lightning arrester online monitoring equipment 4;
A2) the control module 1 controls the reference voltage generator 32 to generate reference voltage and outputs the reference voltage to the checked lightning arrester online monitoring equipment 4 through the reference voltage output module 34; the control module 1 controls the current signal generator 31 to generate detection current and outputs the detection current to the checked lightning arrester online monitoring equipment 4 through the detection current output module 33;
A3) reading a current monitoring value and a voltage monitoring value of the checked lightning arrester online monitoring equipment 4;
A4) and comparing the current monitoring value with the detected current, comparing the voltage monitoring value with the reference voltage, and determining the on-site checking result of the checked lightning arrester on-line monitoring equipment 4 according to the comparison result. For example, if any one of the current monitoring value, the current difference value between the detection currents or the voltage monitoring value, and the voltage difference value between the reference voltages exceeds a preset threshold, the checked lightning arrester online monitoring device 4 is determined to be unqualified.
The on-site checking device for the current type on-line monitoring equipment is used for on-site checking capacitive type equipment capacitive current on-line monitoring equipment 5, and comprises the following steps:
B1) the detection current output module 33 and the reference voltage output module 34 are respectively connected with the checked capacitive device capacitive current online monitoring device 5;
B2) the control module 1 controls the reference voltage generator 32 to generate a reference voltage and outputs the reference voltage to the checked capacitive device capacitive current online monitoring device 5 through the reference voltage output module 34; the control module 1 controls the current signal generator 31 to generate a detection current and outputs the detection current to the checked capacitive device capacitive current online monitoring device 5 through the detection current output module 33;
B3) reading a current monitoring value and a voltage monitoring value of the checked capacitive equipment capacitive current online monitoring equipment 5;
B4) and comparing the current monitoring value with the detection current, comparing the voltage monitoring value with the reference voltage, and determining the on-site checking result of the checked capacitive equipment capacitive current on-line monitoring equipment 5 according to the comparison result. For example, if any one of the current monitor value, the current difference value between the detection currents, or the voltage monitor value, and the voltage difference value between the reference voltages exceeds a preset threshold, it is determined that the checked capacitive device capacitive current online monitoring device 5 is not qualified.
The step of using the on-site checking device for the current type on-line monitoring equipment of the embodiment to on-site checking the current of the transformer core clamp piece on-line monitoring equipment 6 comprises the following steps:
C1) the detection current output module 33 and the reference voltage output module 34 are respectively connected with the checked transformer core clamp current online monitoring equipment 6;
C2) the control module 1 controls the current signal generator 31 to generate a detection current and outputs the detection current to the checked transformer core clamp current on-line monitoring equipment 6 through the detection current output module 33;
C3) reading a current monitoring value of the checked transformer core clamp current on-line monitoring equipment 6;
C4) and comparing the current monitoring value with the detection current, and determining the on-site checking result of the checked transformer core clamp current on-line monitoring equipment 6 according to the comparison result. For example, if the current difference between the current monitoring value and the detection current exceeds a preset threshold, the checked transformer core clamp current online monitoring device 6 is determined to be unqualified.
The on-site checking device for the current type on-line monitoring equipment in the embodiment is used for on-site checking of the high-frequency current on-line monitoring equipment 7 and comprises the following steps:
D1) the detection current output module 33 and the reference voltage output module 34 are respectively connected with the checked high-frequency current online monitoring device 7;
D2) the control module 1 controls the current signal generator 31 to generate a detection current and outputs the detection current to the checked high-frequency current online monitoring device 7 through the detection current output module 33;
D3) reading a current monitoring value of the checked high-frequency current on-line monitoring equipment 7;
D4) and comparing the current monitoring value with the detection current, and determining the field checking result of the checked high-frequency current online monitoring equipment 7 according to the comparison result. For example, if the current difference between the current monitoring value and the detected current exceeds a preset threshold, the checked high-frequency current online monitoring device 7 is determined to be unqualified.
In summary, the on-site checking device for the current type online monitoring equipment of the embodiment integrates checking of 4 types of current type online monitoring equipment, such as the lightning arrester online monitoring equipment 4, the capacitive type equipment capacitance current online monitoring equipment 5, the transformer core clamp current online monitoring equipment 6, the high-frequency current online monitoring equipment 7 and the like, so that on-site checking work is facilitated, the working efficiency is improved, the current type online monitoring equipment can be accurately checked, and the accuracy and reliability of the power equipment online monitoring equipment are improved. The on-site checking device of the current type online monitoring equipment, as a four-in-one checking device, effectively reduces the volume and weight of the device, can share one set of instrument wiring, is rapid and convenient for on-site checking, and can conveniently obtain on-site checking results according to the data of the detection equipment; the utility model discloses can improve power equipment on-line monitoring equipment's accuracy and reliability, in time master power equipment's running state, further enlarge and develop preventing and reducing power equipment trouble, correctly guide its maintenance work.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a device is checked on-spot to current type on-line monitoring equipment, its characterized in that, includes control module (1), output module (2) and multi-functional voltage current signal generator (3), multi-functional voltage current signal generator (3) include current signal generator (31), reference voltage generator (32), detect current output module (33) and reference voltage output module (34), control module (1) links to each other with output module (2), current signal generator (31), reference voltage generator (32) respectively, the output and the detection current output module (33) of current signal generator (31) link to each other, the output and the reference voltage output module (34) of reference voltage generator (32) link to each other.
2. A current type on-line monitoring equipment field check device according to claim 1, characterized in that the current signal generator (31) has the following current signal generating function: (a) the current signal is suitable for checking the lightning arrester on-line monitoring equipment, the effective value range of the full current is 0.1-50mA, and the peak value range of the resistive current fundamental wave is 0.01-10 mA; (b) the method is suitable for online monitoring, setting and checking of capacitance current of the capacitance type equipment, and the effective value range of the total current is 2-1000 mA; (c) the current signal is suitable for checking by the transformer core clamp current on-line monitoring equipment, and the range of the secondary value is 5 mA-10A; (d) the device is suitable for checking current signals of high-frequency current on-line monitoring equipment, the frequency range is 3-30MHz, and the amplitude range is 0.01-10 mA; (e) a harmonic signal can be generated that can be output alone or in combination with any of the aforementioned current signals, the harmonic signal being one of a3 rd, or 5 th, or 7 th, or 9 th, or 11 th harmonic signal.
3. The on-site verification device of the current-mode on-line monitoring equipment according to claim 1, characterized in that the reference voltage generator (32) has the following voltage signal generation function: (a) the voltage signal which is suitable for the online monitoring equipment check of the lightning arrester has a voltage range of 0-100V and a phase angle of 45-90 degrees with the current signal; (b) the voltage signal is suitable for being checked by capacitive equipment capacitive current on-line monitoring equipment, the voltage range is 0-100V, and the phase angle between the voltage signal and the current signal is 75-90 degrees.
4. The on-site checking device of the current type on-line monitoring equipment according to claim 1, characterized in that the output module (2) is a display screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323460.9U CN211928149U (en) | 2020-03-16 | 2020-03-16 | On-spot checking device of current type on-line monitoring equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323460.9U CN211928149U (en) | 2020-03-16 | 2020-03-16 | On-spot checking device of current type on-line monitoring equipment |
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| CN211928149U true CN211928149U (en) | 2020-11-13 |
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| CN202020323460.9U Active CN211928149U (en) | 2020-03-16 | 2020-03-16 | On-spot checking device of current type on-line monitoring equipment |
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