Basis for a Wireless Network for EMC Measurements in Electric Substations

Siew, W.H.; Liu, Y.C.; Musa, B. U.; Mir, Faiza; Wang, Y.

doi:10.1109/isemc.2007.53

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…Recent developments in miniaturisation of digital electronics devices have fuelled the development of wireless sensor networks (WSNs), which have already seen a number of deployments within substations [10][11][12][13]. These devices offer an integrated computing platform which encapsulates sensing, processing, data storage, communications and power components in a single compact package.…”

Section: Wireless Sensor Networkmentioning

confidence: 99%

Development of an integrated low-power rf partial discharge detector

Baker

Stephen

Judd

et al. 2009

2009 IEEE Electrical Insulation Conference

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This paper presents the results from integrating a low-power partial discharge detector with a wireless sensor node designed for operating as part of an IEEE 802.15.4 sensor network, and applying an on-line classifier capable of classifying partial discharges in real-time. Such a system is of benefit to monitoring engineers as it provides a means to exploit the RF technique using a low-cost device while circumventing the need for any additional cabling associated with new condition monitoring systems. The detector uses a frequency-based technique to differentiate between multiple defects, and has been integrated with a SunSPOT wireless sensor node hosting an agent-based monitoring platform, which includes a data capture agent and rule induction agent trained using experimental data. The results of laboratory system verification are discussed, and the requirements for a fully robust and flexible system are outlined.

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Section: Wireless Sensor Networkmentioning

confidence: 99%

Development of an integrated low-power rf partial discharge detector

Baker

Stephen

Judd

et al. 2009

2009 IEEE Electrical Insulation Conference

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“…Research shows that output signal of a CT measured by Bluetooth wireless measurement system is the same with output by high-speed data recorder [6] . SF 6 gap breakdown and vacuum gap breakdown， however, lead to obvious negative influence on Bluetooth wireless communication.…”

Section: Introductionmentioning

confidence: 99%

A study on immunity of wireless sensor unit in substation

Zhang

Cui

et al. 2012

International Symposium on Electromagnetic Compatibility - EMC EUROPE

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This paper studies on immunity of wireless sensor unit in the Internet of Things in substation, which is responsible for signal acquisition and transmission. Field measurement and experiment indicate that the wireless sensor unit is influenced by electromagnetic disturbance in substation. Analysis of the measurement data shows that frequency range of electromagnetic disturbance includes the communication frequency of the wireless sensor unit. In order to reveal the distribution of induced voltage under electromagnetic disturbance in the wireless sensor unit and ensure reliability and security of the Internet of Things in substation, simulation and immunity test of the wireless sensor unit are performed.

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“…Thereby, all limitations of HV differential probes in the presented measurement scenarios are mitigated. Galvanically isolated measurements are widely used in Medium-Voltage (MV) applications and in harsh environments, exposed to high noise, switching surges and interferences [20], demanding for robust measurement systems, e.g., in plasma physics experiments [21], in HV electric substations to quantify the electromagnetic compatibility [22] or to assess the quality of the power distribution grid [23]. An optical link (analog or digital) is mostly used as isolated transmission channel [20], [21], [23] but also wireless communication channels have been investigated [24], [25].…”

Section: Introductionmentioning

confidence: 99%

High-Bandwidth Isolated Voltage Measurements With Very High Common Mode Rejection Ratio for WBG Power Converters

Niklaus

Bonetti

Stäger

et al. 2022

IEEE Open J. Power Electron.

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Galvanically isolated voltage measurements are becoming increasingly important for the characterization of converter systems with fast switching Wide-Bandgap (WBG) semiconductors. A very high Common Mode Rejection Ratio (CMRR) > 80 dB for frequencies up to several tens of MHz is required to accurately measure, e.g., the high-side gate-source or drainsource voltage in a half-bridge, or voltages on floating potentials as, e.g., found in multi-level converters. Common to all listed measurement scenarios is the fast changing reference potential, which acts as Common Mode (CM) disturbance. This article derives the minimum necessary CMRR at different frequencies to constrain the time-domain measurement error below a certain limit. Thereby, only the switched voltage and the voltage transition rate (dv/dt) of the CM disturbance are to be considered and not the actual converter switching frequency f sw . Afterwards, a galvanically isolated measurement system with a CMRR > 100 dB up to 100 MHz and an analog measurement bandwidth of 130 MHz is presented. Critical design aspects to achieve this performance are investigated. Compared to commercially available isolated voltage probes, the presented measurement system does not require any additional equipment like an oscilloscope to perform and visualize measurements, since the data is already digitized/sampled and thus can be transmitted directly to a host device (e.g., computer or monitoring system) with corresponding Graphical User Interface (GUI) software. Experimental verification in frequency-and timedomain confirms that the performance is on par with the best commercially available isolated voltage probes.

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Basis for a Wireless Network for EMC Measurements in Electric Substations

Cited by 6 publications

References 5 publications

Development of an integrated low-power rf partial discharge detector

Development of an integrated low-power rf partial discharge detector

A study on immunity of wireless sensor unit in substation

High-Bandwidth Isolated Voltage Measurements With Very High Common Mode Rejection Ratio for WBG Power Converters

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