Radio Noise, Audible Noise, and Corona Loss of EHV and UHV Transmission Lines Under Rain: Predetermination Based on Cage Tests

Juette, Gerhard W.; Zaffanella, L.E.

doi:10.1109/tpas.1970.292728

Cited by 45 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to the experiments in the full-size test lines, the experiments of the various bundle geometries in the corona cage will be much more time-saving as well as more economical in financial costs [21]. For the reasons outlined above, corona cages have been generally applied in measuring and forecasting corona performances (radio noise, audible noise, corona power loss and so on) of high voltage power transmission lines [26,33].…”

Section: Corona Discharge and Radio Noise Tests Arrangementmentioning

confidence: 99%

“…According to the research of Juette, wet snowflakes or raindrops may accumulate on the surfaces of the conductors in bad weather, forming corona discharging sources, consequently, the radio noise and audible noise from an ac transmission line may become higher [26]. However, the effects of other contaminations adhering to the conductors on the radio noise were not studied.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of surface roughness on corona-generated electromagnetic interference for long-term operating conductors

Bian

Wang

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

This paper presents a research of the surface roughness effects on corona-generated electromagnetic interference of long-term operating conductors. The detailed surface morphologies and roughness of typical long-term operating conductors were measured and analyzed. The radio noise measurement system based on the corona cage was discussed and the actual radio noise generated by the conductor in the measured cage was obtained, based on the parameters of the corona cage and the measured data. The radio noise tests were carried out under both dry and wet conditions. Under two types of conditions, the corona intensity was higher on the long-term operating conductors contrasted to the new conductors as a result of the anomalistic surfaces of the long-term operating conductors. The rate of decrease of corona inception voltages between the long-term operating conductors and new conductors was discovered to increase with the raise of surface roughness degree R a in linear relationship. Approximate linear relation was also discovered between the averaged radio noise deviation and R a . The rate of decrease of corona inception voltages under wet conditions was slightly higher (about 1%) than that under dry conditions. The difference between the radio noise of long-term operating conductors and that of new conductors was larger (1.3 dB) under wet conditions compared to dry conditions.

show abstract

Section: Corona Discharge and Radio Noise Tests Arrangementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of surface roughness on corona-generated electromagnetic interference for long-term operating conductors

Bian

Wang

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

show abstract

“…industrial, housing, transportation, communication, services, has increased the demand of power supply by many folds. In order to cater to this increased demand, the transmission line towers have to support larger and heavier conductors in bundle configuration, Juette and Zaffanella [1]. is makes the tower configurations taller and wider, and hence, the tower system would become heavier.…”

Section: Introductionmentioning

confidence: 99%

Determination of Modelling Error Statistics for Cold‐Formed Steel Columns

Rokade

Rao

Palani

2020

Advances in Civil Engineering

View full text Add to dashboard Cite

In this article, an attempt has been made to estimate the Modelling Error (ME) associated with compression capacity models available in international standards for different failure modes of compression members fabricated from Cold-Formed Steel (CFS) lipped channel sections. For the first time, a database has been created using test results available in the literature for compression capacities of CFS lipped-channel sections. e database contains details of 273 numbers of compression member tests which have failed in different failure modes, namely, (i) flexural, torsional, flexural-torsional, local, and distortion buckling and (ii) failure by yielding. Only those sources, which report all the details, required to compute the capacities using different standards are included in the database. e results of experimental investigations carried out at CSIR-Structural Engineering Research Centre, Chennai, are also included in this test database. e international codes of practice used in calculation of compression capacities of the database columns considered in this paper are ASCE 10-15 (2015), AISI S100-16 (2016), AS/NZS 4600: 20184600: (20184600: ), and EN 19934600: -1-3:20064600: (2006. e ASCE, AISI, AS/NZS, and EN design standards have different design guidelines with respect to the failure modes, e.g., ASCE 10-15 (2015) standard provides stringent criteria for maximum width to thickness ratio for stiffened and unstiffened elements. Hence, guidelines for the distortional buckling mode are not provided, whereas the AISI S100-16 (2016) and AS/NZS 4600: 2018 (2018) standards consider separate guidelines for distortional buckling mode and EN 1993EN -1-3:2006EN (2006 standard considers combined local and distortional buckling mode. Further, the sample size for each design standard is varying depending on the design criteria and failure mode. Studies on statistical analysis of ME suggest that the compression capacity predicting models for flexural-torsional buckling mode are associated with large variation irrespective of the design standard. Similar observations are made for the flexural buckling model as per EN 1993EN -1-3:2006EN (2018 standard and distortional buckling models as per AISI S100-16 (2016) and AS/NZS 4600: 2018 (2018) standards. e compression capacities for test database sections are evaluated by neglecting the partial safety factors available in design standards. e probabilistic analysis to determine statistical characteristics of compression capacity indicates the importance of consideration of ME as a random variable. Hence, the ME results will be useful in code calibration studies and may have potential reference to design practice.

show abstract

“…7 Juette researched the influence of different diameters and sub-conductor numbers on corona loss characteristics. 8 Kolcio measured the corona loss of different bundle spacing and conductor radii during fog and fair weather from 775 kV test lines. 9 Chartier studied long-term corona-loss averages of diverse conductor diameters and determined the relationship between rain intensity and corona loss.…”

Section: Introductionmentioning

confidence: 99%

A helical charge simulation based 3-D calculation model for corona loss of AC stranded conductors in the corona cage

et al. 2018

View full text Add to dashboard Cite

Corona loss generated from conductors is an indispensable factor in the design of alternating current(AC) transmission lines. Based on a helical charge simulation method, a 3-D calculation model for corona loss considering the outer strands of the conductor in the corona cage was established. Compared to the 2-D corona-loss calculation method, the calculation model proposed in this study incorporates the heterogeneity of the electric fields strength along the axial direction of the stranded conductor. Furthermore, it was also able to calculate the corona loss when the conductor had sagged. The calculation results of the LGJ-300/40 and LGJ-400/35 in the small corona cage show close agreement with the measurement results indicating that the corona-loss calculation model was accurate. In addition, the corona loss of the bundle conductors 4 × LGJ720 with sag in the UHV corona cage was also analyzed.

show abstract

Radio Noise, Audible Noise, and Corona Loss of EHV and UHV Transmission Lines Under Rain: Predetermination Based on Cage Tests

Cited by 45 publications

References 17 publications

The effect of surface roughness on corona-generated electromagnetic interference for long-term operating conductors

The effect of surface roughness on corona-generated electromagnetic interference for long-term operating conductors

Determination of Modelling Error Statistics for Cold‐Formed Steel Columns

A helical charge simulation based 3-D calculation model for corona loss of AC stranded conductors in the corona cage

Contact Info

Product

Resources

About