CN211478562U - High-voltage switch cabinet partial discharge on-line monitoring system based on ultrahigh frequency technology - Google Patents
High-voltage switch cabinet partial discharge on-line monitoring system based on ultrahigh frequency technology Download PDFInfo
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- CN211478562U CN211478562U CN201922112621.XU CN201922112621U CN211478562U CN 211478562 U CN211478562 U CN 211478562U CN 201922112621 U CN201922112621 U CN 201922112621U CN 211478562 U CN211478562 U CN 211478562U
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Abstract
The utility model relates to a distribution switch cabinet monitoring technology field especially relates to a based on hyperfrequency technique high tension switchgear partial discharge on-line monitoring system. The system comprises an ultrahigh frequency sensor, a high voltage switch cabinet, a signal amplification circuit, a filter circuit and a signal processing circuit, wherein two ends of the ultrahigh frequency sensor are respectively connected with the high voltage switch cabinet and the signal amplification circuit; the programming interface module is connected with a programming computer; the input end of the multi-level power supply module is connected with a power grid, and the output end of the multi-level power supply module is connected with the DSP minimum system, the ultrahigh frequency sensor and the CAN communication unit; the instruction input unit is connected with the control button; the CAN communication unit is connected with an industrial computer, and the filter circuit, the programming interface module, the data display unit, the instruction input unit and the CAN communication unit are connected with the DSP minimum system. The utility model discloses the hyperfrequency electromagnetic wave that the utilization detected high tension switchgear partial discharge and produced realizes the on-line monitoring to partial discharge.
Description
Technical Field
The utility model relates to a distribution switch cabinet monitoring technology field especially relates to a based on hyperfrequency technique high tension switchgear partial discharge on-line monitoring system.
Background
High-voltage switch cabinets are important switchgear in electrical power systems, and the reduction of the insulation level during long-term operation seriously threatens the safe operation of the electrical power system. Because the high-voltage switch cabinet may generate discharge phenomenon in the accident latency period, the development of the on-line monitoring research on the partial discharge of the high-voltage switch cabinet has very important significance for preventing the insulation fault of the high-voltage switch cabinet, improving the safety of equipment and ensuring the safe operation of a power system.
Disclosure of Invention
In order to solve the problem that exists, the utility model provides a based on hyperfrequency technique high tension switchgear partial discharge on-line monitoring system, its purpose is in order to utilize the hyperfrequency electromagnetic wave that detects the high tension switchgear partial discharge and produce, realizes the on-line monitoring to partial discharge. The high-voltage switch cabinet has the advantages of strong anti-interference capability, high sensitivity and the like, and meets the requirement of monitoring the partial discharge of the high-voltage switch cabinet.
Based on the above utility model purpose, the utility model discloses a realize through following technical scheme:
the high-voltage switch cabinet partial discharge on-line monitoring system based on the ultrahigh frequency technology comprises a DSP minimum system, an ultrahigh frequency sensor, a signal amplification circuit, a filter circuit, a programming interface module, a multi-level power module, a data display unit, an instruction input unit, a control button, a CAN communication unit and an industrial computer; the measuring end of the ultrahigh frequency sensor is connected with the high-voltage switch cabinet, the ultrahigh frequency sensor is connected with the signal amplifying circuit, the signal amplifying circuit is connected with the filter circuit, and the filter circuit is connected with the DSP minimum system; the programming interface module is connected with the minimum DSP system and is connected with a programming computer; the multi-level power module is connected with a power grid and is respectively connected with the DSP minimum system, the ultrahigh frequency sensor and the CAN communication unit; the data display unit is connected with the DSP minimum system, the instruction input unit is connected with the control button, and the instruction input unit is connected with the DSP minimum system; the CAN communication unit is connected with the DSP minimum system and is connected with the industrial computer.
The signal output end of the ultrahigh frequency sensor is connected with the signal input end of the signal amplification circuit, the signal output end of the signal amplification circuit is connected with the signal input end of the filter circuit, and the signal output end of the filter circuit is connected with the signal input end of the minimum DSP system.
And the signal output end of the programming interface module is connected with the signal input end of the minimum DSP system, and the signal input end of the programming interface module is connected with the signal output end of the programming computer.
The input end of the multi-level power supply module is connected with a power grid, and the output end of the multi-level power supply module is respectively connected with the DSP minimum system, the ultrahigh frequency sensor and the CAN communication unit.
The signal input end of the data display unit is connected with the signal output end of the DSP minimum system, the signal input end of the instruction input unit is connected with the signal output end of the control button, and the signal output end of the instruction input unit is connected with the digital signal input end of the DSP minimum system.
And the signal input end and the signal output end of the CAN communication unit are connected with the communication signal output end and the communication signal input end of the DSP minimum system, and the signal output end of the CAN communication unit is connected with the communication signal input end of the industrial computer.
The utility model has the advantages of it is following and beneficial effect:
the utility model discloses the hyperfrequency electromagnetic wave that the utilization detected high tension switchgear partial discharge and produced realizes the on-line monitoring to partial discharge. The high-voltage switch cabinet partial discharge monitoring device has the advantages of simple structure, good stability, powerful function, strong anti-interference capability, high sensitivity and the like, and meets the requirement of partial discharge monitoring of the high-voltage switch cabinet. The method has very important significance for preventing insulation faults of the high-voltage switch cabinet, improving equipment safety and ensuring safe operation of a power system.
Drawings
The technical solution in the examples of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, other embodiments obtained by a person of ordinary skill in the art without creative work all belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of the local discharge on-line monitoring system of the ultrahigh frequency technology high-voltage switch cabinet of the utility model;
fig. 2 is the utility model discloses hyperfrequency technique high tension switchgear partial discharge on-line monitoring system flow chart.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model relates to a based on hyperfrequency technique high tension switchgear partial discharge on-line monitoring system, as shown in FIG. 1, FIG. 1 is the utility model discloses hyperfrequency technique high tension switchgear partial discharge on-line monitoring system structure sketch.
The utility model discloses the system includes DSP minimum system, hyperfrequency sensor, signal amplification circuit, filter circuit, programming interface module, many level power module, data display element, instruction input unit, control button, CAN communication unit and industrial computer and constitutes.
The measuring end of the ultrahigh frequency sensor is connected with the high-voltage switch cabinet, the signal output end of the ultrahigh frequency sensor is connected with the signal input end of the signal amplifying circuit, the signal output end of the signal amplifying circuit is connected with the signal input end of the filter circuit, and the signal output end of the filter circuit is connected with the signal input end of the DSP minimum system. The signal output end of the programming interface module is connected with the signal input end of the DSP minimum system, and the signal input end of the programming interface module is connected with the signal output end of the programming computer. The input end of the multi-level power supply module is connected with a power grid, and the output end of the multi-level power supply module is respectively connected with the DSP minimum system, the ultrahigh frequency sensor and the CAN communication unit. The signal input end of the data display unit is connected with the signal output end of the DSP minimum system, the signal input end of the instruction input unit is connected with the signal output end of the control button, and the signal output end of the instruction input unit is connected with the digital signal input end of the DSP minimum system. The signal input and output ends of the CAN communication unit are connected with the communication signal output and input ends of the DSP minimum system, and the signal output end of the CAN communication unit is connected with the communication signal input end of the industrial computer.
Utilize the utility model discloses ultrahigh frequency technique high tension switchgear partial discharge on-line monitoring system carries out the operation process who monitors as follows:
step 1: powering on the system, initializing the system, and waiting for a control instruction of the instruction input unit;
step 2: after receiving the monitoring instruction, the ultrahigh frequency sensor collects a partial discharge signal;
and step 3: the collected partial discharge signals are processed by a signal amplifying circuit and a filter circuit and then fed back to the DSP minimum system;
and 4, step 4: the DSP minimum system performs operation and processing on the data and realizes display and remote transmission of partial discharge signals;
and 5: when the DSP minimum system identifies the local discharge signal, the diode is adopted for unidirectional filtering, and filtering is carried out, so that effective detection of high-frequency and low-frequency signals is realized, and the identification capability of the local discharge signal is enhanced;
step 6: and when the high-voltage switch cabinet is in fault, the DSP minimum system sends a signal to the upper computer through the CAN communication unit, and the monitoring system stops working.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. Based on ultrahigh frequency technology high tension switchgear partial discharge on-line monitoring system, characterized by: the system comprises a DSP minimum system, an ultrahigh frequency sensor, a signal amplifying circuit, a filter circuit, a programming interface module, a multi-level power module, a data display unit, an instruction input unit, a control button, a CAN communication unit and an industrial computer; the measuring end of the ultrahigh frequency sensor is connected with the high-voltage switch cabinet, the ultrahigh frequency sensor is connected with the signal amplifying circuit, the signal amplifying circuit is connected with the filter circuit, and the filter circuit is connected with the DSP minimum system; the programming interface module is connected with the minimum DSP system and is connected with a programming computer; the multi-level power module is connected with a power grid and is respectively connected with the DSP minimum system, the ultrahigh frequency sensor and the CAN communication unit; the data display unit is connected with the DSP minimum system, the instruction input unit is connected with the control button, and the instruction input unit is connected with the DSP minimum system; the CAN communication unit is connected with the DSP minimum system and is connected with the industrial computer.
2. The ultrahigh frequency technology-based high-voltage switch cabinet partial discharge online monitoring system as claimed in claim 1, wherein: the signal output end of the ultrahigh frequency sensor is connected with the signal input end of the signal amplification circuit, the signal output end of the signal amplification circuit is connected with the signal input end of the filter circuit, and the signal output end of the filter circuit is connected with the signal input end of the minimum DSP system.
3. The ultrahigh frequency technology-based high-voltage switch cabinet partial discharge online monitoring system as claimed in claim 1, wherein: and the signal output end of the programming interface module is connected with the signal input end of the minimum DSP system, and the signal input end of the programming interface module is connected with the signal output end of the programming computer.
4. The ultrahigh frequency technology-based high-voltage switch cabinet partial discharge online monitoring system as claimed in claim 1, wherein: the input end of the multi-level power supply module is connected with a power grid, and the output end of the multi-level power supply module is respectively connected with the DSP minimum system, the ultrahigh frequency sensor and the CAN communication unit.
5. The ultrahigh frequency technology-based high-voltage switch cabinet partial discharge online monitoring system as claimed in claim 1, wherein: the signal input end of the data display unit is connected with the signal output end of the DSP minimum system, the signal input end of the instruction input unit is connected with the signal output end of the control button, and the signal output end of the instruction input unit is connected with the digital signal input end of the DSP minimum system.
6. The ultrahigh frequency technology-based high-voltage switch cabinet partial discharge online monitoring system as claimed in claim 1, wherein: and the signal input end and the signal output end of the CAN communication unit are connected with the communication signal output end and the communication signal input end of the DSP minimum system, and the signal output end of the CAN communication unit is connected with the communication signal input end of the industrial computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922112621.XU CN211478562U (en) | 2019-12-01 | 2019-12-01 | High-voltage switch cabinet partial discharge on-line monitoring system based on ultrahigh frequency technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922112621.XU CN211478562U (en) | 2019-12-01 | 2019-12-01 | High-voltage switch cabinet partial discharge on-line monitoring system based on ultrahigh frequency technology |
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| CN211478562U true CN211478562U (en) | 2020-09-11 |
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| CN201922112621.XU Active CN211478562U (en) | 2019-12-01 | 2019-12-01 | High-voltage switch cabinet partial discharge on-line monitoring system based on ultrahigh frequency technology |
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