Comparative study of Partial Discharge emulators for the calibration of Free-Space radiometric measurements

IEEE Trans. Dielect. Electr. Insul.

Moradzadeh

et al. 2017

The present study addresses the calibration of four types of partial discharge (PD) emulators used in the development of a PD Wireless Sensor Network (WSN). Three PD emulators have been constructed: a floating-electrode emulator, and two internal PD emulators. Both DC and AC high-voltage power supplies are used to initiate PD, which is measured using concurrent free-space radiometry (FSR) and a galvanic contact method based on the IEC 60270 standard. The emulators have been measured and simulated, and a good agreement has been found for the radiated fields. A new method of estimating the absolute PD activity level from radiometric measurements is proposed

Section: Experimental Apparatus For Pd Measurementmentioning

confidence: 99%

“…The output of the HV power source is connected to the lower electrode and the upper electrode is connected to earth. When the electric field is sufficiently large, corona discharge originates from the floating electrode [17,18]. The acrylic tube PD emulator is shown in Figure 8.…”

Section: Experimental Apparatus For Pd Measurementmentioning

confidence: 99%

Calibration of free-space radiometric partial discharge measurements

IEEE Trans. Dielect. Electr. Insul.

Moradzadeh

et al. 2017

“…PD is generated by applying a high voltage (AC or DC) to the artificial PD sources; a floating electrode emulator, an acrylic tube emulator, an acrylic tube emulator immersed in transformer oil, and an epoxy dielectric emulator. The radiometric measurements were made using a vertically polarized biconical antenna connected to a 4 GHz, 20 GSa/s, digital sampling oscilloscope (DSO) [5]. The floating electrode emulator, acrylic tube emulator, and epoxy dielectric emulator are shown in Figure 3.…”

Section: Pd Measurement Apparatusmentioning

confidence: 99%

Diagnostic potential of free-space radiometric partial discharge measurements

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)

Saeed

et al. 2017

The work reported in this paper addresses the calibration of four types of partial discharge (PD) emulator required for the development of a PD Wireless Sensor Network (WSN). Three partial discharge (PD) emulators have been constructed: a floating-electrode emulator, and two internal PD emulators. Both DC and AC HV power supplies are used to initiate PD which is measured using concurrent free-space radiometry (FSR) and a galvanic contact method based on the IEC 60270 standard. A new method of estimating absolute PD activity level from a radiometric measurement is proposed.

“…1. More information about PD measurements can be found in [3], [4], [5] and [6]. PD is generated by applying an AC HV to the PD source.…”

Section: Apparatusmentioning

confidence: 99%

“…When the electric field is sufficiently large, PD occurs across the electrode gaps. More details about PD sources can be found in [7], [8], [9] and [10]. The radiometric measurements were made using a wideband biconical antenna connected to a 4 GHz, 20 GSa/s, digital sampling oscilloscope (DSO).…”

Section: Apparatusmentioning

confidence: 99%

Assessment of Effective Radiated Power of the Partial Discharge Emulator Source

Wireless and Satellite Systems

Saeed

et al. 2017

Two effective partial discharge (PD) measurement techniques are used; a galvanic contact measurement technique similar to the IEC 60270 standard measurement and free-space radiometric (FSR) measurement. Several types of PD sources are specially constructed: two internal PD emulators and an emulator of the floating-electrode type. An AC power supply is applied to the PD source and the radiated signal is captured using a wideband biconical antenna. The calibration of PD sources is demonstrated. Effective radiated power (ERP) of the PD sources using a PD calibration device is determined.