Using IEEE Flash to estimate transmission and distribution line lightning performance

McDermott, Thomas E.

doi:10.1109/tdc.2012.6281469

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…As a result, the crest value of a voltage impulse propagating from an OHL into a cable reduces when entering the latter, with the opposite happening when propagating from a cable into an OHL. The relation between voltages are given by (1), where V I is the incident voltage, V F is the voltage refracted forward, V R is the voltage reflected back, Z B is the characteristic impedance of the line to where the wave is propagating into and Z A is the characteristic impedance of the line which the voltage wave is propagating from.…”

Section: Ii1 Shielding Failurementioning

confidence: 99%

“…The value k send_Arr for reflection n is then the multiplication of the previous k send . Example, k send_Arr (3)= k send (2).k send (1)…”

Section: Derivation Of Equation (22) -Wfront_arrmentioning

confidence: 99%

“…An EMT simulation is always more accurate and necessary if precise values are required, but to set an EMT simulation model accounting all factors is time-consuming, it requires human resources with specialised knowledge on EMT simulations and an EMT software tool. A screening tool in the style of IEEE-Flash [1], [2] would be helpful, by allowing both a fast assessment of the phenomenon severity, by varying a series of parameters that are uncertain at the earlier stages of a project (e.g. cable length, grounding impedance, surge arrester type), and by not requiring an engineer with expertise in insulation coordination.…”

Section: Introductionmentioning

confidence: 99%

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Lightning surges in hybrid cable-overhead lines: Part I—voltage estimation for shielding failure

Silva

Pedersen

2022

Electr Eng

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The increasing usage of hybrid cable-overhead lines raises concerns over the protection of short cable sections against lightning surges, because of voltage build-up in the cable section. To set a simulation model of the phenomenon is time consuming, with numerous parameters impacting the overvoltage. This paper (Part I) presents formulas able to perform a fast estimation of the maximum overvoltage at a cable-overhead line transition point in the event of shielding failure. The formulas estimate the overvoltage with and without surge arrester, as well as the energy absorbed by the surge arrester. These formulas do not require an Electromagnetic Transients (EMT) software and they can be implemented as a script, requiring solely the geometric data of the cable and overhead line, information available in the respective datasheets. The main usefulness is a tool for a fast screening of the overvoltages and a fast evaluation of the impact of different parameters such as cable length, lightning waveform and grounding impedance.

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Section: Ii1 Shielding Failurementioning

confidence: 99%

“…The value k send_Arr for reflection n is then the multiplication of the previous k send . Example, k send_Arr (3)= k send (2).k send (1)…”

Section: Derivation Of Equation (22) -Wfront_arrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lightning surges in hybrid cable-overhead lines: Part I—voltage estimation for shielding failure

Silva

Pedersen

2022

Electr Eng

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“…Fig. 6 shows a more streamlined user interface to IEEE Flash than was available earlier [18]. As before, this interface requires Microsoft Excel 2007 (or later), with Visual Basic for Applications (VBA) enabled in order to run.…”

Section: Operational Applicationsmentioning

confidence: 99%

“…Outputs also include the arrester discharge duty expressed in charge (C) rather than energy; the charge is now believed to be more representative of the lightning discharge duty on an arrester [19]. In either case, with or without line arresters, the program sets up more detailed IEEE Flash [18] and OpenEtran inputs (see Fig. 3) for possible further investigation.…”

Section: Operational Applicationsmentioning

confidence: 99%

Open source lightning protection and electromagnetic transients software

McDermott

Short

Velez

et al. 2013

2013 IEEE Power &Amp; Energy Society General Meeting

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For many years, an IEEE program called Flash was maintained to estimate flashover rates on transmission lines. With recent consolidation of two Working Groups, a new version of Flash has been developed to consistently treat both transmission and distribution lines. The new software includes line arresters, shield wires, tower and pole grounding, and insulation added by wood or fiberglass. The program also incorporates electromagnetic transient simulation to evaluate line arresters.

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