Design of Post Metal Shields Through Electric Field Distribution Analysis for a 154-kV SFCL

Yoo, Jinho; Shin, Woo-Ju; Han, Young-Hee; Lee, Bang Wook; Kim, Hey-Rim; Yang, Seong Eun; Kim, Hee-Sun; Yu, Seung-Duck; Park, Kijun

doi:10.1109/tasc.2014.2387117

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…The electric field generated by the conductor charge in the surrounding space is E ( r , t ). Under the effect of the electric field, an inductive charge will appear on the surface of the metal electrode owing to electrostatic induction principle [ 20 , 21 ]. Suppose that the quantity of electric charge is q .…”

Section: Design Principle Of the Voltage Sensormentioning

confidence: 99%

Research and Experiments on a Unipolar Capacitive Voltage Sensor

Zhou

Li³

et al. 2015

Sensors

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Voltage sensors are an important part of the electric system. In service, traditional voltage sensors need to directly contact a high-voltage charged body. Sensors involve a large volume, complex insulation structures, and high design costs. Typically an iron core structure is adopted. As a result, ferromagnetic resonance can occur easily during practical application. Moreover, owing to the multilevel capacitor divider, the sensor cannot reflect the changes of measured voltage in time. Based on the electric field coupling principle, this paper designs a new voltage sensor; the unipolar structure design solves many problems of traditional voltage sensors like the great insulation design difficulty and high costs caused by grounding electrodes. A differential signal input structure is adopted for the detection circuit, which effectively restrains the influence of the common-mode interference signal. Through sensor modeling, simulation and calculations, the structural design of the sensor electrode was optimized, miniaturization of the sensor was realized, the voltage division ratio of the sensor was enhanced, and the phase difference of sensor measurement was weakened. The voltage sensor is applied to a single-phase voltage class line of 10 kV for testing. According to the test results, the designed sensor is able to meet the requirements of accurate and real-time measurement for voltage of the charged conductor as well as to provide a new method for electricity larceny prevention and on-line monitoring of the power grid in an electric system. Therefore, it can satisfy the development demands of the smart power grid.

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Section: Design Principle Of the Voltage Sensormentioning

confidence: 99%

Research and Experiments on a Unipolar Capacitive Voltage Sensor

Zhou

Li³

et al. 2015

Sensors

View full text Add to dashboard Cite

show abstract

“…The method achieved a prominent reduction of average electric field value [9]. In [10], the EFS of the post insulator was reduced by designing metal shields, and the finite‐element method was employed to simulate the electric field distribution. However, few investigations focus on modulating the electric field distribution by locating the peak of electric field at appropriate position.…”

Section: Introductionmentioning

confidence: 99%