CN211402681U - Transformer bushing insulation on-line monitoring integrated device - Google Patents
Transformer bushing insulation on-line monitoring integrated device Download PDFInfo
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- CN211402681U CN211402681U CN201921498303.5U CN201921498303U CN211402681U CN 211402681 U CN211402681 U CN 211402681U CN 201921498303 U CN201921498303 U CN 201921498303U CN 211402681 U CN211402681 U CN 211402681U
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Abstract
The utility model discloses a transformer bushing insulation on-line monitoring integrated device, which comprises a stainless steel cabinet body, a micro-current sensor, a current monitoring device, a voltage monitoring device, a host, a PT secondary voltage interface, a bushing current interface, a working power supply interface, a communication interface and a grounding terminal, wherein the inner space of the stainless steel cabinet body is sequentially divided into a first area, a second area and a third area from top to bottom, the host, the current monitoring device and the voltage monitoring device are arranged in the first layer through an embedded structure, the utility model integrates the signal sampling sensor, the current monitoring device, the voltage monitoring device and the host into a whole through the integrated monitoring device, introduces a detected signal, a reference voltage signal and a working power supply into the integrated monitoring device, realizes the on-line monitoring of the running transformer bushing, and detects the working state in the transformer bushing, the safety of the device is improved, and the working efficiency is improved.
Description
Technical Field
The utility model relates to an integrated device specifically isInsulating on-line monitoring of transformer bushing is integrative to be adorned Device for placingBelonging to the technical field of transformer application.
Background
Operation accidents caused by insulation damage of high-voltage electrical equipment cause huge loss to the whole national economy, affect the safe operation of the whole power grid and endanger the safety of personnel. Therefore, the insulation condition of the high-voltage electrical equipment is critical to the safe operation of the electrical equipment, and the management department of the electrical equipment is required to strengthen the insulation monitoring and diagnosis of the electrical equipment and find hidden dangers in time to ensure the safety of the electrical equipment and personnel.
The transformer bushing convenient to connect of current patent grant publication No. CN208608030U, this transformer bushing convenient to connect, the convenient performance of device has been strengthened, prevent the inside of dust entering device, and then influence the normal work of device, the security performance of device has further been strengthened, however, this transformer bushing convenient to connect can't effectively solve when current monitoring the time between each unit separate mutually and between the signal need cable junction, receive the interference easily during weak signal transmission, influence the problem of measured data accuracy, for this reason, we proposeTransformer bushing insulation on-line monitoring integrated device。
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at is used for acquireing the leakage current signal of being surveyed each looks of capacitive device through the current sensor of each looks, current monitoring device and voltage monitoring device are handled current signal and the accurate plastic of voltage signal, digital filtering, the signal digitization is handled, the host computer carries out the analysis to it, according to the quick operating condition who knows in the device of the data of calculation, through integration monitoring device with signal sampling sensor, current detection device, voltage monitoring device, the host computer is integrated as an organic whole, will be surveyed the signal, reference voltage signal, integrated monitoring device is introduced to working power supply, the realization is implemented on-line monitoring to the transformer bushing in service.
The utility model solves the technical problems that:
(1) how to process the amplitude and the phase of the signals input by the voltage unit and the current unit through the host computer and calculate the related parameters such as the current value, the voltage value, the equivalent capacitance and the dielectric loss, thereby carrying out detailed analysis on the change of the current and voltage data and solving the problem that the working state in the device is difficult to know quickly in the prior art;
(2) how to obtain measured signal, reference voltage signal, working power supply through integrated monitoring devices and introduce into integrated monitoring devices solves and is difficult to carry out real-time supervision to the inside operation of device among the prior art.
The purpose of the utility model can be realized by the following technical scheme: the utility model provides an insulating on-line monitoring integrated device of transformer bushing, includes the stainless steel cabinet body, little current sensor, current monitoring device, voltage monitoring device, host computer, PT secondary voltage interface, sleeve pipe current interface, working power source interface, communication interface and ground terminal, the internal space of stainless steel cabinet separates into first region, second region and third region from top to bottom in proper order, install host computer, current monitoring device and voltage monitoring device through embedded structure in the first region, install little current sensor in the second region, install interface arrangement and ground terminal in the third region.
As a further improvement of the utility model: the interface device is specifically a PT secondary voltage interface, a sleeve current interface, a working power supply interface and a communication interface.
As a further improvement of the utility model: the grounding terminal is specifically a grounding copper bar.
As a further improvement of the utility model: the stainless steel cabinet body is by stainless steel material component, and the stainless steel cabinet body is the closed setting, be provided with the isolation shielding layer between first region, second region and the third region.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the current sensor of each phase is used for acquiring leakage current signals of each phase of the capacitive equipment to be detected; the voltage converter of each phase belongs to a PT secondary reference signal conversion unit, and the voltage monitoring device is used for performing precise shaping processing, digital filtering and signal digitization processing on voltage signals; the current monitoring device carries out precise shaping processing, digital filtering and signal digitization processing on current signals, and the host machine carries out amplitude and phase processing on signals input by the voltage unit and the current unit and calculates related parameters such as current values, voltage values, equivalent capacitors and dielectric losses, so that detailed analysis is carried out on the change of current and voltage data, and the working state in the device is rapidly known according to the calculated data.
2. The signal sampling sensor, the current detection device, the voltage monitoring device and the host are integrated into a whole through the integrated monitoring device, a detected signal, a reference voltage signal and a working power supply are introduced into the integrated monitoring device, online monitoring of the running transformer bushing is achieved, the working state in the transformer bushing is detected, the safety of the device is improved, and the working efficiency is improved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall installation structure of the present invention.
In the figure: 1. a stainless steel cabinet body; 2. a first region; 3. a second region; 4. a PT secondary voltage interface; 5. A third region; 6. a bushing current interface; 7. a current monitoring device; 8. a ground terminal; 9. a communication interface; 10. a working power supply interface; 11. a micro-current sensor; 12. a host; 13. a voltage monitoring device; 14. An interface device.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1, an integrated device for online monitoring of transformer bushing insulation comprises a stainless steel cabinet 1, a micro-current sensor 11, a current monitoring device 7, a voltage monitoring device 13, a host 12, a PT secondary voltage interface 4, a bushing current interface 6, a working power supply interface 10, a communication interface 9 and a ground terminal 8, wherein the inner space of the stainless steel cabinet 1 is sequentially divided into a first area 2, a second area 3 and a third area 5 from top to bottom, the host 12 is installed in the first area 2 through an embedded structure, the current monitoring device 7 and the voltage monitoring device 13, the micro-current sensor 11 is installed in the second area 3, and the interface device 14 and the ground terminal 8 are installed in the third area 5.
The interface device 14 is specifically a PT secondary voltage interface 4, a sleeve current interface 6, a working power supply interface 10 and a communication interface 9, and the host 12 is connected with the signals of the units in a signal interconnection mode to realize long-term timing detection of the sleeve and storage and remote transmission of data.
The ground terminal 8 is specifically a ground copper bar.
Stainless steel cabinet body 1 is by stainless steel material component, and stainless steel cabinet body 1 is the closed setting, is provided with the isolation shielding layer between first region 2, second region 3 and the third region 5, and mutual isolation shielding has sealed, shielding and interference killing feature between inside each region.
The main machine 12 is connected with each other through signals to realize long-term timing detection of the bushing and store and transmit data, the sensors of all phases are used for acquiring leakage current signals of all phases of the tested capacitive equipment, the voltage converters of all phases belong to a PT secondary reference signal conversion unit and are used for acquiring voltage reference signals and signal isolation, the voltage monitoring device 13 is used for performing precise shaping processing, digital filtering and signal digitization processing on the voltage signals, the current monitoring device 7 is used for performing precise shaping processing, digital filtering and signal digitization processing on the current signals, and the main detection machine 12 is used for performing amplitude and phase processing on the signals input by the voltage unit and the current unit and calculating relevant parameters such as current values, voltage values, equivalent capacitors and dielectric losses.
The working principle is as follows: the utility model discloses when using, the current sensor of each phase acquires the leakage current signal of each phase of measured capacitance type equipment, the voltage converter of each phase belongs to PT secondary reference signal's conversion signal, voltage monitoring device 13 and current monitoring device 7 sample current signal and voltage signal simultaneously, host computer 12 calculates the current signal and the voltage signal of sampling simultaneously, calculate the assignment of voltage to voltage, compare the processing according to the data of voltage monitoring device 13 and 7 inputs of current monitoring device, calculate the current value, the voltage value, equivalent capacitance, the phasor between dielectric loss class relevant parameter and voltage and the electric current.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The utility model provides an insulating on-line monitoring integrated device of transformer bushing, includes the stainless steel cabinet body (1), little current sensor (11), current monitoring device (7), voltage monitoring device (13), host computer (12), PT secondary voltage interface (4), sleeve pipe current interface (6), working power source interface (10), communication interface (9) and ground terminal (8), its characterized in that: stainless steel cabinet body (1) inner space from top to bottom separates into first region (2), second region (3) and third region (5) in proper order, install host computer (12), current monitoring device (7) and voltage monitoring device (13) through embedded structure in first region (2), install little current sensor (11) in the second region (3), install interface arrangement (14) and ground terminal (8) in the third region (5).
2. The transformer bushing insulation online monitoring integrated device according to claim 1, characterized in that: the interface device (14) is specifically a PT secondary voltage interface (4), a sleeve current interface (6), a working power supply interface (10) and a communication interface (9).
3. The transformer bushing insulation online monitoring integrated device according to claim 2, characterized in that: the grounding terminal (8) is specifically a grounding copper bar.
4. The transformer bushing insulation online monitoring integrated device according to claim 1, characterized in that: stainless steel cabinet body (1) is by stainless steel material component, and stainless steel cabinet body (1) is the closed setting, be provided with the isolation shielding layer between first region (2), second region (3) and third region (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921498303.5U CN211402681U (en) | 2019-09-10 | 2019-09-10 | Transformer bushing insulation on-line monitoring integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921498303.5U CN211402681U (en) | 2019-09-10 | 2019-09-10 | Transformer bushing insulation on-line monitoring integrated device |
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| Publication Number | Publication Date |
|---|---|
| CN211402681U true CN211402681U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921498303.5U Active CN211402681U (en) | 2019-09-10 | 2019-09-10 | Transformer bushing insulation on-line monitoring integrated device |
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| Country | Link |
|---|---|
| CN (1) | CN211402681U (en) |
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2019
- 2019-09-10 CN CN201921498303.5U patent/CN211402681U/en active Active
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