CN211928076U - Ceramic insulator partial discharge detection simulation platform - Google Patents
Ceramic insulator partial discharge detection simulation platform Download PDFInfo
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- CN211928076U CN211928076U CN201922224714.1U CN201922224714U CN211928076U CN 211928076 U CN211928076 U CN 211928076U CN 201922224714 U CN201922224714 U CN 201922224714U CN 211928076 U CN211928076 U CN 211928076U
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Abstract
The utility model discloses a detection simulation platform is put in ceramic insulator office aims at providing a high detection sensitivity's ceramic insulator office and puts detection simulation platform. The device comprises a power supply, a voltage regulating transformer, a step-up transformer, a current limiting resistor, a discharge model, a ceramic capacitor core insulator, a sensor and a partial discharge detector; the output end of the power supply is connected with a voltage regulating transformer, the output end of the voltage regulating transformer is connected with a boosting transformer, the output end of the boosting transformer is divided into two paths, one path is connected with the current limiting resistor, and the other path is connected with the ceramic capacitor core insulator; the current-limiting resistor is connected with the discharge model, the ceramic capacitor core insulator is connected with a sensor, the sensor is connected with a partial discharge detector, and the discharge model and the sensor detect impedance and are grounded after being connected; the voltage regulating transformer is used for boosting or reducing the input voltage; the step-up transformer is used to step up the voltage to a high-voltage mode.
Description
Technical Field
The utility model belongs to the technical field of the power equipment insulation detection technique and specifically relates to a detection simulation platform is put in ceramic insulator office is related to.
Background
Partial discharge will take place after the distribution network cubical switchboard is ageing at the operation in-process insulating medium, and under the partial discharge effect, insulating characteristic will deteriorate step by step and lead to the electric power accident, seriously threatens electric power system's safe operation, and power supply quality and reliability.
According to statistics, the main factor causing the insulation medium of the switch cabinet to be degraded is caused by partial discharge, and accounts for more than 85% of accidents of the switch cabinet. Therefore, how to effectively find the partial discharge of the switch cabinet and detect the potential switch cabinet fault in time is a problem which is increasingly concerned by power operation units. The existing technologies applied to the partial discharge detection and positioning of the switch cabinet mainly comprise gas composition detection in the switch cabinet, ultrasonic measurement and transient earth electric wave measurement.
The method for detecting gas components in the switch cabinet is to monitor the components of ozone, carbon monoxide, carbon dioxide, dinitrogen pentoxide and the like decomposed by partial discharge generated by defects in the switch cabinet, and is a new method for detecting partial discharge in the switch cabinet at present. However, because the switch cabinets have large space and are not closed cavities, each switch cabinet needs to be provided with a sensor to detect and position partial discharge, and the detection sensitivity is low, so that weak discharge cannot be found.
A10 kV/35kV live indication sensor (ceramic capacitor core insulator) is an insulator which is formed by pouring a ceramic capacitor in epoxy resin and has certain mechanical strength, and is generally applied to live indication and misoperation prevention locking of switch cabinets and ring main units at present. However, the ceramic capacitor core insulator which is used in large quantities at present is only used for the charged display, and the ceramic capacitor core insulator which can be used as a sensor for partial discharge signal coupling is neglected. Based on this, it is necessary to develop a simulation verification platform based on the partial discharge of the ceramic insulator, which couples the partial discharge signal in the switch cabinet to the sensor through the ceramic insulator, and simulates the real partial discharge of the switch cabinet to realize the technical means of recording, examining and researching the frequency, sensitivity, pulse technology and other characteristic parameters of the partial discharge detection device for the partial discharge detection, thereby improving the quality, health level and use efficiency of the monitoring device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a purpose aims at overcoming the not enough of prior art existence, provides a detection simulation platform is put in ceramic insulator office. The method and the device solve the problems that the sensitivity of detecting partial discharge of the switch cabinet is low and weak discharge cannot be found.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a partial discharge detection simulation platform for a ceramic insulator comprises a power supply, a voltage regulating transformer, a step-up transformer, a current limiting resistor, a discharge model, a ceramic capacitor core insulator, a sensor and a partial discharge detector; the output end of the power supply is connected with a voltage regulating transformer, the output end of the voltage regulating transformer is connected with a boosting transformer, the output end of the boosting transformer is divided into two paths, one path is connected with the current limiting resistor, and the other path is connected with the ceramic capacitor core insulator; the current-limiting resistor is connected with the discharge model, the ceramic capacitor core insulator is connected with a sensor, the sensor is connected with a partial discharge detector, and the discharge model and the sensor detect impedance and are grounded after being connected; the voltage regulating transformer is used for boosting or reducing the input voltage; the boosting transformer is used for boosting the voltage to a high-voltage mode and pressurizing the discharging model; the current limiting resistor is used for protecting the discharge model; the discharge model is used for simulating a partial discharge type; the ceramic capacitor core insulator is used for coupling a partial discharge signal to a sensor detection impedance; the sensor converts pulse current generated by partial discharge into pulse voltage, extracts high-frequency pulse current signals generated by the partial discharge, and inhibits the power frequency and harmonic low-frequency signals of the test power supply; the partial discharge detector is used for collecting, analyzing and processing partial discharge signals.
Preferably, the output voltage of the power supply is three-phase alternating current 220V.
Preferably, the regulating transformer is a 220V regulating transformer.
Preferably, the partial discharge detector is a digital partial discharge detector.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses a partial discharge in the true simulation cubical switchboard, and realized acquireing the partial discharge signal through ceramic insulator, used and possessed the sensing device who instructs with electricity and partial discharge measurement, to cubical switchboard partial discharge detection, found an economy, simple and convenient, sensitivity is high, the detection simulation platform that the interference killing feature is strong.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a simplified diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention. In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by means of directional terms, but the terms "front", "rear", "left", "right", "up", "down", etc. should be construed as convenient terms and not as limitative terms.
The partial discharge detection simulation platform for the ceramic insulator shown in fig. 1 comprises a power supply 1, a voltage regulating transformer 2, a step-up transformer 3, a current limiting resistor 4, a discharge model 5, a ceramic capacitor core insulator 6, a capacitance sensor 7 and a partial discharge detector 8; the output end of the power supply 1 is connected with a voltage regulating transformer 2, the output end of the voltage regulating transformer 2 is connected with a boosting transformer 3, the output end of the boosting transformer 3 is divided into two paths, one path is connected with the current limiting resistor 4, and the other path is connected with the ceramic capacitor core insulator 6; the current-limiting resistor 4 is connected with the discharge model 5, the ceramic capacitor core insulator 6 is connected with the capacitor sensor 7, the capacitor sensor 7 is connected with the partial discharge detector 8, and the discharge model 5 and the capacitor sensor 7 are grounded after being connected; the voltage regulating transformer 2 is used for boosting or reducing the input voltage; the step-up transformer 3 is used for increasing the voltage to a high-voltage mode and pressurizing the discharge model 5; the current limiting resistor 4 is used for protecting the discharge model 5; the discharge model 5 is used for simulating a partial discharge type; the ceramic capacitor core insulator 6 is used for coupling a partial discharge signal to the capacitor sensor 7; the capacitance sensor 7 converts pulse current generated by partial discharge into pulse voltage, extracts high-frequency pulse current signals generated by partial discharge, and suppresses power frequency and harmonic low-frequency signals of the test power supply 1; the partial discharge detector is used for collecting, analyzing and processing partial discharge signals.
In this embodiment, the output voltage of the power supply 1 is three-phase ac 220V. The regulating transformer 2 is a 220V regulating transformer. The partial discharge detector 8 adopts a digital partial discharge detector, so that data can be read visually.
The utility model discloses circuit, electronic components and controller that the well related are prior art, and technical personnel in the field can realize completely, need not proud. At the same time, the present invention also does not involve improvements to the software and methods.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It should be understood by those skilled in the art that any modification, equivalent replacement, or improvement made to the technical solutions or parts of technical features described in the above embodiments can be included in the scope of the present invention within the spirit and principle of the present invention.
Claims (5)
1. A partial discharge detection simulation platform for a ceramic insulator comprises a power supply, a voltage regulating transformer, a step-up transformer, a current limiting resistor, a discharge model, a ceramic capacitor core insulator, a sensor and a partial discharge detector; the method is characterized in that: the output end of the power supply is connected with a voltage regulating transformer, the output end of the voltage regulating transformer is connected with a boosting transformer, the output end of the boosting transformer is divided into two paths, one path is connected with the current limiting resistor, and the other path is connected with the ceramic capacitor core insulator; the current-limiting resistor is connected with the discharge model, the ceramic capacitor core insulator is connected with a sensor, the sensor is connected with a partial discharge detector, and the discharge model and the sensor detect impedance and are grounded after being connected; the voltage regulating transformer is used for boosting or reducing the input voltage; the boosting transformer is used for boosting the voltage to a high-voltage mode and pressurizing the discharging model; the current limiting resistor is used for protecting the discharge model; the discharge model is used for simulating a partial discharge type; the ceramic capacitor core insulator is used for coupling a partial discharge signal to a sensor detection impedance; the sensor converts pulse current generated by partial discharge into pulse voltage, extracts high-frequency pulse current signals generated by the partial discharge, and inhibits the power frequency and harmonic low-frequency signals of the test power supply; the partial discharge detector is used for collecting, analyzing and processing partial discharge signals.
2. The ceramic insulator partial discharge detection simulation platform of claim 1, wherein: the output voltage of the power supply is three-phase alternating current 220V.
3. The ceramic insulator partial discharge detection simulation platform according to claim 1 or 2, characterized in that: the regulating transformer is a 220V regulating transformer.
4. The ceramic insulator partial discharge detection simulation platform according to claim 1 or 2, characterized in that: the partial discharge detector adopts a digital partial discharge detector.
5. The simulation platform for partial discharge detection of a ceramic insulator according to claim 3, wherein: the partial discharge detector adopts a digital partial discharge detector.
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| CN201922224714.1U CN211928076U (en) | 2019-12-12 | 2019-12-12 | Ceramic insulator partial discharge detection simulation platform |
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| CN201922224714.1U CN211928076U (en) | 2019-12-12 | 2019-12-12 | Ceramic insulator partial discharge detection simulation platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115201630A (en) * | 2022-07-19 | 2022-10-18 | 云南电网有限责任公司电力科学研究院 | Insulator fault detection method, system and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115201630A (en) * | 2022-07-19 | 2022-10-18 | 云南电网有限责任公司电力科学研究院 | Insulator fault detection method, system and equipment |
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