Development and Application of a Wireless Sensor for Space Charge Density Measurement in an Ultra-High-Voltage, Direct-Current Environment

Xin, Encheng; Ju, Yang; Yuan, Haiwen

doi:10.3390/s16101743

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…In the process of 3D electric field measurement in many fields, charged particles may be present in the measurement area. For instance, the ionosphere and thunderstorm clouds contain a significant number of charged particles [23,24], highvoltage DC (HVDC) transmission lines generate ion flow fields [25], and electrostatic charges exist in industrial production environments [26]. In such scenarios, charges may accumulate on the surface of the MEMS EFSs' package, leading to interference with the electric field measurement.…”

Section: Introductionmentioning

confidence: 99%

An anti-charge-interference three-dimensional electric field sensor

Zhang,

Xia,

Peng

2024

Meas. Sci. Technol.

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A major concern in the development of three-dimensional (3D) microelectromechanical system (MEMS) electric field sensors (EFSs) is space charge interference. With space charges in the surrounding environment, charges may accumulate at the surface of the EFS, which affects the accuracy of the electric field measurement. There is a lack of relevant mechanism research and solutions for this problem. Here, an anti-charge-interference 3D EFS is presented, which consists of three electric field sensing elements and a reference element. By establishing the model of the sensing element, the relationship of the electric field at the sensing chip with the distance between the sealing cap and the sensing chip is explored. The theoretical basis of the measurement method of the 3D electric field based on a coplanar structure is introduced. Then, the influence of charge accumulation is overcome by a differential calculation between the output signals of the reference element and sensing elements. The anti-charge-interference 3D EFS prototype is developed. Experimental results show that the measurement error of the anti-charge-interference 3D EFS is 4.01% and the linearity is better than 1% under an electric field of 0-50 kV·m-1.

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Section: Introductionmentioning

confidence: 99%

An anti-charge-interference three-dimensional electric field sensor

Zhang,

Xia,

Peng

2024

Meas. Sci. Technol.

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“…However, its safety has been widely concerned by the community [1,2]. Scientific evaluation of the safety of the UHV grid is of great significance to analyze the security level of the power system, find the potential safety problems and prevent the blackouts.…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment Method of UHV AC/DC Power System under Serious Disasters

Long

Zhang

2016

Energies

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Based on the theory of risk assessment, the risk assessment method for an ultra-high voltage (UHV) AC/DC hybrid power system under severe disaster is studied. Firstly, considering the whole process of cascading failure, a fast failure probability calculation method is proposed, and the whole process risk assessment model is established considering the loss of both fault stage and recovery stage based on Monte Carlo method and BPA software. Secondly, the comprehensive evaluation index system is proposed from the aspects of power system structure, fault state and economic loss, and the quantitative assessment of system risk is carried out by an entropy weight model. Finally, the risk assessment of two UHV planning schemes are carried out and compared, which proves the effectiveness of the research work.

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Improved localization algorithm for distributed fiber-optic sensor based on merged Michelson-Sagnac interferometer

Song¹,

Zhou²,

Peng³

et al. 2020

Opt. Express

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A novel distributed fiber-optic localization algorithm with high sensitivity and precision based on merged Michelson-Sagnac interferometer is proposed and demonstrated. By performing simple addition and subtraction processing on the two phase differences of the two interferometers, two superimposed signals with a fixed delay can be obtained. The time delay can be calculated by a cross-correlation algorithm. Combined with the polynomial fitting interpolation, the disturbance location resolution is significantly improved. The total sensing distance can reach 120 km, and the localization errors are within ±35 m and ±160 m in the contact and non-contact disturbance experiment, respectively.

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Development and Application of a Wireless Sensor for Space Charge Density Measurement in an Ultra-High-Voltage, Direct-Current Environment

Cited by 3 publications

References 22 publications

An anti-charge-interference three-dimensional electric field sensor

An anti-charge-interference three-dimensional electric field sensor

Risk Assessment Method of UHV AC/DC Power System under Serious Disasters

Improved localization algorithm for distributed fiber-optic sensor based on merged Michelson-Sagnac interferometer

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