Radiometric location of partial discharge sources for the future smart grid

Neto, José; Zhang, Yong; Jaber, Adel; Zhu, M.; Judd, M.D.; Atkinson, Robert; Soraghan, John J.; Neto, José Sérgio da Rocha; Vieira, Maria de Fátima Q.; Glover, Ian

doi:10.1109/ursigass.2014.6929570

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…Unlike some electrical methods that requires a direct contact to the HV or MV equipment under test (as capacitive couplers or transient earth voltage, TEV, sensors), the UHF method does not require any physical contact with the object under test. In addition, UHF method requires few sensors (typically 3 sensors) for PD source localization [11]. The UHF method is supported by sensors such as UHF probes and UHF antennas to detect PD activity.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

et al. 2022

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This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used for partial discharge (PD) detection on high voltage and medium voltage power system equipment. The proposed UHF antenna has a working frequency band of 1.2GHz-4.5GHz, covering a total bandwidth of 3.3GHz with a return loss less than -10dB in the entire antenna's operating frequency. The computer simulation technology (CST) Microwave Studio software was used to design, simulate and optimize the proposed antenna. Upon simulation and optimization process, the antenna prototype was fabricated on the FR-4 substrate of 1.6 mm thickness and dielectric permittivity of 4.4. This antenna has a compact size of 100mm x100mm.The radiating patch and the ground plane of this antenna are made of annealed copper whose thickness is 0.035mm. The simulations and measurement results for the proposed antenna are in a good agreement, and the return loss of this antenna is less than -10dB with voltage standing wave ratio, VSWR, < 2 within the frequency range of interest. The proposed antenna performance in PD sensing is compared with a commercial high-frequency current transformer, HFCT. To validate the sensitivity performance of the designed antenna, experimental PD measurements were carried out by using an epoxy slab inserted between two parallel plates electrode model, in order to generate surface discharge on the insulator, and using a needleplate electrode configuration to generate corona discharge in transformer oil. Based on PD measurement results, it was shown that the designed antenna has a high sensitivity, which make it a suitable candidate for UHF partial discharge monitoring on high voltage and medium voltage power assets.INDEX TERMS Surface discharge, corona discharge, UHF antenna, HFCT, UHF PD monitoring.

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Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

et al. 2022

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“…Free-space radiometric measurement has been proposed as a particularly convenient technique for PD source location and monitoring, at least in part, because it requires no physical connection to electrical components. The FSR technique uses remotely located antennas to receive the radio frequency (RF) signal radiated by transient PD pulses [1], [2]. Traditionally, it has been the temporal evolution of FSR-derived data that has been used to flag PD of immediate engineering concern since the absolute PD intensity (in pC) has been thought impractical to assess.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Effective Radiated Power of the Partial Discharge Emulator Source

Jaber

Lazaridis

Saeed

et al. 2017

Wireless and Satellite Systems

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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.

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“…The radiation of EM waves created by PD in HV apparatus therefore facilitates compromised insulation diagnosis and location [1,2]. The use of radiated PD signals is referred to as a free-space radiometric (FSR) method of PD detection and source location [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Validation of partial discharge emulator simulations using free-space radiometric measurements

Jaber

Lazaridis

Saeed

et al. 2016

2016 International Conference for Students on Applied Engineering (ISCAE)

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A useful technique to estimate the degradation of insulation in high voltage (HV) installations is the measurement of partial discharge (PD). Free-space radiometric (FSR) detection of PD is a relatively new technique. Several types of PD emulator sources have been constructed: two internal PD emulators and a floating electrode emulator. The emulators have been simulated using the CST Microwave Studio software package. The intention is to use the simulated emulators to establish a relationship between radiated PD signals and PD intensity as defined by apparent charge transfer. To this end the radiated fields predicted in the simulations are compared with measurements. There is sufficient agreement between simulations and measurements to suggest the simulations could be used to investigate the relationship between PD intensity and the field strength of radiated signals.

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Radiometric location of partial discharge sources for the future smart grid

Cited by 7 publications

References 5 publications

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

Assessment of Effective Radiated Power of the Partial Discharge Emulator Source

Validation of partial discharge emulator simulations using free-space radiometric measurements

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