A method for measuring surface electric field intensity of insulators based on electroluminescent effect

Yang, Xinyi; Jia, Yunfei; Gao, Lu; Ji, Shengchang; Li, Zhibing

doi:10.1016/j.egyr.2020.10.056

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…Проте, для ефективного використання та подальшого удосконалення сучасних електронних пристроїв необхідно вимірювати та контролювати електричні поля надмалої потужності, що виникають в процесі роботи цих пристроїв [4]. Тому необхідно застосовувати точні та надійні методи вимірювання таких полів, які дозволяють забезпечити якість та стабільність роботи електронних пристроїв, зменшити енерго-та ресурсовитрати на їх виготовлення та гарантовано підвищити термін експлуатації таких пристроїв.…”

Section: вступunclassified

The Influence of External Factors on the Accuracy and Reliability of the Determination of Ultra-Low Power Electric Fields

Тичков¹,

Волошко²

2023

Bull. Kyiv Polytech. Inst. Ser. Instrum. Mak.

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The article presents the results of an experimental study of the influence of temperature, relative humidity of the surrounding environment, as well as the coefficient of electromechanical action on the process of determining ultra-low power electric fields. The analysis of the obtained results made it possible to establish the most rational conditions for determining the force (electrical tension) and energy (distribution of surface charge and electric capacity) parameters of such fields with higher accuracy and reliability. The paper proposes an experimental experiment to establish the accuracy and reliability of power and energy parameters for determining electric fields under conditions of changes in climatic factors and the electromechanical coefficient, the implementation of which took place on a measuring stand developed with the participation of the authors. The main element of such a measuring stand is an automatic device for determining, collecting and processing information on the distribution of power and energy parameters of the electric field under the sensitive element of the measuring transducer. The results obtained as a result of the experimental research made it possible to establish that the coefficient of electromechanical influence has a decisive influence on the accuracy of measuring electric fields of ultra-low power. It is shown that an increase in the coefficient of electromechanical influence from 38 pN/V (silicon <111>) to 190 pN/V (PZT-8 piezoelectric ceramics) leads to an increase in the relative error of electric field determination by 4.7%. It was established that reducing the temperature to 20 °C while maintaining the relative humidity from 38 % to 74 % leads to a decrease in the relative error by 1.5-2.2 %. At the same time, a decrease in temperature with a simultaneous decrease in relative humidity leads to an increase in the reliability of the determination of electric fields (so, the probability of error-free measurement of power and energy parameters of electric fields increases by 18 %). A comparison of the results obtained by the proposed method with the results obtained by atomic force microscopy method (in the mode of measuring the leakage currents from the working areas of the investigated surfaces) was carried out, which showed a strong positive correlation between these results, which confirms the objectivity of the proposed method and the adequacy of the obtained results. The conclusions and analyzed data obtained in the article based on the results of experimental studies can be used to create a system of automatic error correction and instability determination of power and energy parameters of ultra-low power electric fields, taking into account limiting external influences.

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Section: вступunclassified

The Influence of External Factors on the Accuracy and Reliability of the Determination of Ultra-Low Power Electric Fields

Тичков¹,

Волошко²

2023

Bull. Kyiv Polytech. Inst. Ser. Instrum. Mak.

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“…Inspired by this, the introduction of electroluminescent materials into the insulation system can realize the visual display of the high electric field area, and is expected to be applied in the self-inspection of insulation defects [18]. Yang et al prepared the surface coating based on epoxy resin/ZnS: Cu, and realized the measurement of the electric field distribution on the insulator surface through luminescence photography, image processing and electric field simulation calibration [19]. Electroluminescent materials have been utilised for characterising the surface electric field distribution.…”

Section: Introductionmentioning

confidence: 99%

“…Yang et al. prepared the surface coating based on epoxy resin/ZnS: Cu, and realized the measurement of the electric field distribution on the insulator surface through luminescence photography, image processing and electric field simulation calibration [19]. Electroluminescent materials have been utilised for characterising the surface electric field distribution.…”

Section: Introductionmentioning

confidence: 99%

Flexible smart surface coating for GIS/GIL epoxy insulators

Wang,

Chen,

et al. 2024

IET Nanodielectrics

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A flexible smart coating with electroluminescence effect was designed and fabricated on the surface of gas insulated switch gear (GIS)/gas insulated transmission line (GIL) epoxy insulators based on two‐step curing process. As the AC voltage increases, the luminous area on the insulator surface expands from the centre to the periphery, and the light intensity shows a linear relationship with the applied voltage. Besides, the flexible smart coating can effectively identify the location of metal particle defects and the degree of electric field distortion. The flexible smart coating enhances the surface flashover voltage due to its higher dielectric constant. Simultaneously, metal particle contamination can substantially reduce the insulation performance of epoxy insulators, particularly when they are located near the high‐voltage side. It is hoped that this study can provide a reference for the smart detection of surface defects GIS/GIL basin insulators.

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“…They are useful for applications that involve static or slowly changing electric fields. In power utilities, they can be used to evaluate the electromagnetic environment in an electric power transmission system [ 1 ] and the design of insulators [ 2 ], and to ensure the safety of power workers [ 3 ]. In industrial manufacturing processes, they can be used to prevent electrostatic discharges (ESDs) to protect electronic equipment [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

A Flexible Printed Circuit Board Based Microelectromechanical Field Mill with a Vertical Movement Shutter Driven by an Electrostatic Actuator

Chen,

Shafai

2024

Sensors

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Micromachined electric field mills have received much interest for the measurement of DC fields; however, conventional designs with lateral moving shutters could have shutter lifting in the presence of strong fields, which affects their performance. This paper presents a MEMS electric field mill utilizing a vertical movement shutter to address this issue. The sensor is designed and fabricated based on a flexible PCB substrate and is released using a laser-cutting process. The movement of the shutter is driven by an electrostatic actuator. When the driving signal is a sine wave, the shutter moves in the same direction during both the positive and negative half-periods. This facilitates the application of a lock-in amplifier to synchronize with the signal at twice the frequency of the driving signal. In experimental testing, when the vertical shutter is driven at a resonance of 840 Hz, the highest sensitivity of the sensor is achieved and is measured to be 5.1 V/kVm−1. The sensor also demonstrates a good linearity of 1.1% for measuring DC electric fields in the range of 1.25 kV/m to 25 kV/m.

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A method for measuring surface electric field intensity of insulators based on electroluminescent effect

Cited by 7 publications

References 18 publications

The Influence of External Factors on the Accuracy and Reliability of the Determination of Ultra-Low Power Electric Fields

The Influence of External Factors on the Accuracy and Reliability of the Determination of Ultra-Low Power Electric Fields

Flexible smart surface coating for GIS/GIL epoxy insulators

A Flexible Printed Circuit Board Based Microelectromechanical Field Mill with a Vertical Movement Shutter Driven by an Electrostatic Actuator

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