An expert system for high-voltage substations lightning performance estimation

Savic, Milan; Stojković, Zlatan

doi:10.1109/61.141835

Cited by 17 publications

(19 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The first event is represented with the mean value of the probability of the overvoltages occurrence exceeding the BIL of the transformer due to a strike somewhere on the analyzed span of the line. This value is calculated by means of the probabilistic method of limiting parameters and the procedure described in [4,7]. Substation configuration denotes the second parameters having influence (1) i=l where Pci is the probability of the i-th configuration.…”

Section: Statistical Methods For the Lightning Performance Estimationmentioning

confidence: 99%

“…The strokes to only first two spans are analyzed. The strokes to other spans v v vare not dangerous due to the travelling wave attenuation and distortion[4,6]. Similar equivalent circuits are formed for the other dispositions according toFig.…”

mentioning

confidence: 98%

“…The substation configuration is a parameter with frequent changes during a year. Therefore, the MTBF estimation approaches based on the most critical configuration (only one line connected) during the whole year have been extremely pessimistic [4,6]. The sensitivity analysis of different substation elements overvoltage amplitudes in terms of tower-footing resistances and codigurations has been performed [7].…”

mentioning

confidence: 99%

See 2 more Smart Citations

An improved method for HV substation lightning performance estimation

Stojković

1999

IEEE Trans. Power Delivery

Self Cite

View full text Add to dashboard Cite

The paper presents a statistical approach to the highvoltage substation lightning performance estimation. The method involves the monthly distribution of the lightning discharges to the lines, determined according to the l i e geometry and thunder activity, as well as the monthly probability distribution of the substation configurations. The mean time between failure of the power transformer insulations is estimated for a 400 kV / 110 kV transformer substation. The paper provides the analysis of the results obtained for various dispositions, number and place of positioning the surge arresters, as well as the power transformer basic insulation level. The improved procedure of the lightning performance estimation can contribute to a more economical substation design.

show abstract

Section: Statistical Methods For the Lightning Performance Estimationmentioning

confidence: 99%

mentioning

confidence: 98%

mentioning

confidence: 99%

See 1 more Smart Citation

An improved method for HV substation lightning performance estimation

Stojković

1999

IEEE Trans. Power Delivery

Self Cite

View full text Add to dashboard Cite

show abstract

“…Za statističku analizu atmosferskih prenapona razvijeno je više metoda, koje uvažavaju zakone raspodele amplitude i strmine struje groma. Za praktičnu primenu pogodna je metoda krive opasnih parametara groma, kod koje se rizik kvara određuje integraljenjem funkcije gustine raspodele amplitude i strmine struje groma u oblasti iznad krive opasnih parametara groma [13,1]. Druga često korišćena metoda za statističku analizu atmosferskih prenapona je Monte Karlo metoda, koja se primenjuje kada nisu egzaktno poznati svi ulazni parametri ali su poznate funkcije raspodela prema kojima se parametri menjaju, kao što je ovde slučaj.…”

Section: Rezultati Statističkog Pristupaunclassified

Using alternative transient program and electromagnetic transients programs (ATP/EMTP) in lightning overvoltages analysis

Mrvić¹,

Jasika²,

Vukelja³

et al. 2016

Zb EI Nikola Tesla

View full text Add to dashboard Cite

Kratak sadržaj: U radu je demonstriran postupak procene rizika kvara izolacije usled atmosferskih prenapona. Simulacije su sprovedene primenom programskog alata ATP/EMTP, pri čemu su prikazane prednosti primene Monte Karlo metode u statističkoj analizi koordinacije izolacije. Detaljno je opisan postupak modelovanja svih elemenata značajnih za analizu, u okviru čega su predstavljene mogućnosti programskog jezika MODELS koji omogućava formiranje i implementaciju novih složenih komponenti u sklopu programskog alata ATP.Ključne reči: atmosferski prenaponi, ATP/EMTP, rizik kvara izolacije, Monte Karlo simulacija, koordinacija izolacije, MTBF, metoda progresivnog lidera UvodProračun atmosferskih prenapona ima značajnu ulogu pri projektovanju elektroenergetskih sistema (EES) i postrojenja. Pri direktnim atmosferskim pražnjenjima u elemente elektroenergetskih sistema mogu se javiti vrlo velike struje koje uzrokuju pojavu visokih prenapona, što često može izazvati privremene poremećaje ili prekide napajanja u EES. Atmosferski prenaponi nastaju kao posledica direktnog udara groma u nadzemni vod ili indukcije pri udaru munje u obližnje tlo (indirektni udar). U radu su razmatrana samo atmosferska pražnjenja u nadzemne vodove koja se prema mestu udara mogu podeliti na: udari groma u zaštitno uže ili stub,  udari groma direktno u fazne provodnike.Pri atmosferskim pražnjenjima u vrh stuba ili zaštitno uže, u slučaju velikih amplituda struja groma, može se dogoditi da potencijal konzole stuba u odnosu

show abstract

“…Although the impact of lightning overvoltages to the OHL has been considered since the first AC transmission line was placed in service, this subject has been discussed again in some recently published scientific papers. [1][2][3][4] The lightning performance of an OHL can be evaluated using a simple empirical formulae, 5,6 specialized software, [7][8][9][10] or by direct registration of OHL trip outs caused by lightning. 11,12 The simple empirical formulae 5,6 should be used for rough estimations of the OHL and substation lightning performances.…”

Section: Introductionmentioning

confidence: 99%

Specialized software for estimating transmission line and substation lightning performance

Banjanin

Savic

2015

The International Journal of Electrical Engineering & Educa

View full text Add to dashboard Cite

This paper describes specialized software developed to estimate substation and transmission line performance during lightning events. Comparison with similar software packages is also discussed and advantages are noticed. Additionally, this paper describes specific program features that could be applied in the education of students. Supporting computational exercises included in subject curriculum are given as well. The aim of every exercise is clearly defined and some of the estimated results are included. Introduction of presented software package in course curriculum allows teachers to present fundamental concepts and results. Such information attracts students' attention and makes the lessons more interesting. This leads to better understanding of the presented materials.

show abstract

An expert system for high-voltage substations lightning performance estimation

Cited by 17 publications

References 6 publications

An improved method for HV substation lightning performance estimation

An improved method for HV substation lightning performance estimation

Using alternative transient program and electromagnetic transients programs (ATP/EMTP) in lightning overvoltages analysis

Specialized software for estimating transmission line and substation lightning performance

Contact Info

Product

Resources

About