Plausibility of incoherent detection for radiometric monitoring of insulation integrity in HV substations

Neto, José; Macedo, E C; Neto, José Sérgio da Rocha; Vieira, M F Q; Glover, Ian; Judd, M.D.; Atkinson, Robert; Soraghan, John J.

doi:10.1109/lapc.2013.6711949

Cited by 8 publications

(9 citation statements)

References 7 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main benefit of an RSS-based system is the use of incoherent receivers, and therefore, no requirement for synchronization between nodes. This allows for a network that is far more flexible than coherent-based detection and can be easily scaled for a given monitoring area of HV plant [ 56 ]. This versatility comes at the cost of decreased accuracy compared to TOA and TDOA techniques, due to the complexity of the propagation environment [ 57 ]; however, this can be alleviated through calibration, by transmitting an artificial PD source of known strength from a single node within the WSN to each other node.…”

Section: Techniques For Radiometric Partial Discharge Measurementmentioning

confidence: 99%

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Upton

Mistry²,

Mather

et al. 2021

Sensors

View full text Add to dashboard Cite

The lifespan assessment and maintenance planning of high-voltage power systems requires condition monitoring of all the operational equipment in a specific area. Electrical insulation of electrical apparatuses is prone to failure due to high electrical stresses, and thus it is a critical aspect that needs to be monitored. The ageing process of the electrical insulation in high voltage equipment may accelerate due to the occurrence of partial discharge (PD) that may in turn lead to catastrophic failures if the related defects are left untreated at an initial stage. Therefore, there is a requirement to monitor the PD levels so that an unexpected breakdown of high-voltage equipment is avoided. There are several ways of detecting PD, such as acoustic detection, optical detection, chemical detection, and radiometric detection. This paper focuses on reviewing techniques based on radiometric detection of PD, and more specifically, using received signal strength (RSS) for the localization of faults. This paper explores the advantages and disadvantages of radiometric techniques and presents an overview of a radiometric PD detection technique that uses a transistor reset integrator (TRI)-based wireless sensor network (WSN).

show abstract

Section: Techniques For Radiometric Partial Discharge Measurementmentioning

confidence: 99%

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Upton

Mistry²,

Mather

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…Techniques have been described previously that alleviate the requirement of synchronization between sensor nodes by using incoherent detection that relies on received signal strength (RSS) only [31]- [34], thereby alleviating the restrictions on scalability and allowing for inclusion of any number of nodes. Some RSS-based approaches also employ an envelope detector within the sensor to greatly reduce the required sample-rate [35], [36] whilst reducing the measurement accuracy.…”

Section: Introductionmentioning

confidence: 99%

Gated Pipelined Folding ADC-Based Low Power Sensor for Large-Scale Radiometric Partial Discharge Monitoring

et al. 2020

View full text Add to dashboard Cite

Partial discharge is a well-established metric for condition assessment of high-voltage plant equipment. Traditional techniques for partial discharge detection involve physical connection of sensors to the device under observation, limiting sensors to monitoring of individual apparatus, and therefore, limiting coverage. Wireless measurement provides an attractive low-cost alternative. The measurement of the radiometric signal propagated from a partial discharge source allows for multiple plant items to be observed by a single sensor, without any physical connection to the plant. Moreover, the implementation of a large-scale wireless sensor network for radiometric monitoring facilitates a simple approach to high voltage fault diagnostics. However, accurate measurement typically requires fast data conversion rates to ensure accurate measurement of faults. The use of high-speed conversion requires continuous high-power dissipation, degrading sensor efficiency and increasing cost and complexity. Thus, we propose a radiometric sensor which utilizes a gated, pipelined, sample-and-hold based folding analogue-todigital converter structure that only samples when a signal is received, reducing the power consumption and increasing the efficiency of the sensor. A proof of concept circuit has been developed using discrete components to evaluate the performance and power consumption of the system.

show abstract

“…Generally, such discharges appear as pulses having a duration of much less than 1 microsecond" (IEC International Standard 60270, 2000). The detection of PD activity permits the condition of HV plant to be assessed and enables insulation defects to be detected and located, and corrective action to be taken, before catastrophic failure (flashover) occurs (de Souza Neto et al, 2013). The detection and measurement of PD is a widely used technique for the assessment of HV plant (Reid et al, 2011) and many techniques have been developed utilizing both contact and wireless technologies.…”

Section: Introductionmentioning

confidence: 99%

Wireless Sensor Network for Radiometric Detection and Assessment of Partial Discharge in High‐Voltage Equipment

et al. 2018

Self Cite

View full text Add to dashboard Cite

Monitoring of partial discharge (PD) activity within high‐voltage electrical environments is increasingly used for the assessment of insulation condition. Traditional measurement techniques employ technologies that either require off‐line installation or have high power consumption and are hence costly. A wireless sensor network is proposed that utilizes only received signal strength to locate areas of PD activity within a high‐voltage electricity substation. The network comprises low‐power and low‐cost radiometric sensor nodes which receive the radiation propagated from a source of PD. Results are reported from several empirical tests performed within a large indoor environment and a substation environment using a network of nine sensor nodes. A portable PD source emulator was placed at multiple locations within the network. Signal strength measured by the nodes is reported via WirelessHART to a data collection hub where it is processed using a location algorithm. The results obtained place the measured location within 2 m of the actual source location.

show abstract

Plausibility of incoherent detection for radiometric monitoring of insulation integrity in HV substations

Cited by 8 publications

References 7 publications

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Gated Pipelined Folding ADC-Based Low Power Sensor for Large-Scale Radiometric Partial Discharge Monitoring

Wireless Sensor Network for Radiometric Detection and Assessment of Partial Discharge in High‐Voltage Equipment

Contact Info

Product

Resources

About