Nelder Mead Method Used in Protection Setting Optimization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F16%3A00305642" target="_blank" >RIV/68407700:21230/16:00305642 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/EPE.2016.7521806" target="_blank" >http://dx.doi.org/10.1109/EPE.2016.7521806</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EPE.2016.7521806" target="_blank" >10.1109/EPE.2016.7521806</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nelder Mead Method Used in Protection Setting Optimization

Popis výsledku v původním jazyce

The paper deals with distributed generation network protection based on adaptive directional overcurrent protections with inverse-time characteristics. Correct setting of all protections is performed by minimization of appropriately designed objective function. The shape of inverse-time characteristics is described by time multiplicator and slope constant. Since optimization of slope constants is not a convex problem, classical gradient optimization methods are not suitable. As a possible solution a direct search algorithm can be used. For this purpose, Nelder-Mead simplex algorithm is used in the article. Convergence speed of the algorithm is highly dependent on proper initial estimations, and hence optimization process consists of two parts. In the first part, simplified objective function only is used to obtain initial estimations. In the second part, full objective function is used to obtain final coefficients. Next, validation of proposed optimized setting in SimPoruchy 2.1 program was performed. The software allows for quick and well-arranged output of failure currents in the system and also for simulation of directional protections with inverse-time characteristics used in the model.

Název v anglickém jazyce

Nelder Mead Method Used in Protection Setting Optimization

Popis výsledku anglicky

The paper deals with distributed generation network protection based on adaptive directional overcurrent protections with inverse-time characteristics. Correct setting of all protections is performed by minimization of appropriately designed objective function. The shape of inverse-time characteristics is described by time multiplicator and slope constant. Since optimization of slope constants is not a convex problem, classical gradient optimization methods are not suitable. As a possible solution a direct search algorithm can be used. For this purpose, Nelder-Mead simplex algorithm is used in the article. Convergence speed of the algorithm is highly dependent on proper initial estimations, and hence optimization process consists of two parts. In the first part, simplified objective function only is used to obtain initial estimations. In the second part, full objective function is used to obtain final coefficients. Next, validation of proposed optimized setting in SimPoruchy 2.1 program was performed. The software allows for quick and well-arranged output of failure currents in the system and also for simulation of directional protections with inverse-time characteristics used in the model.

Druh

D - Stať ve sborníku

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2016 17th International Scientific Conference on Electric Power Engineering (EPE 2016)

ISBN

978-1-5090-0907-7

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

IEEE

Místo vydání

New York

Místo konání akce

Praha

Datum konání akce

16. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000382934600092