Usage of EMTP-RV for NuclearPower Plant Studies_EDF

7/21/2019 Usage of EMTP-RV for NuclearPower Plant Studies_EDF

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Usage of EMTP-RV

for Nuclear PowerPlant Studies

Ali El-Akoum, Alain Xemard


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Schedule of the presentation

Ali El-Akoum , Alain Xemard EDF R&D

1. Introduction

2. Qualification of the software

3. The preparation of models for nuclear plants system modelling

4. Perspectives


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Introduction

Xavier Legrand, EDF R&D

Nuclear plants include a huge number of very different and

complex electrical components.

Stakes are very high in terms of availability, reliability, life span

and safety.

Most of these components interact together.

It is necessary to prove that software programs used for

numerical simulation work adequately. This is the role of the

qualification.


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The Qualification of EMTP-RV


The qualification is to be conducted field of application by fieldof application.

Or

for each study which is not part of a field of applications alreadycovered by the qualification.

Performance of the qualification : the results of the software are compared

on test cases with : field measurements,

results from other software programs,

analytical calculations, etc.


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The qualification of EMTP-RV


In 2011, EMTP-RV version 2.1 was qualified for fast-front-overvoltage

studies (lightning) ;

In 2012, the qualification of the low frequency transformer models of

EMTP-RV is in preparation.


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Example of Test Case FFO measurements in

the substation of Avalon

Alain Xemard , Al i El -Akoum EDF R&D

This is an outdoor substation 245 / 63 / 20 kV. This is a 2-busbar substation.

When the tests are performed only one line and one transformer

are available.

arrier current line

line trap

2 - Capacitive voltage

transformer

3 - Disconnector

4 - Current transformer

5 - line circuit breaker

6 - disconnector

7 - capacitive voltage

transformer

8 - disconnector

9 - Breaker

10 - Power transformer

- I -- II -- III -

+

+

+


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Modeling of the substation


10 m 18 m 36 m 18 m 31 m

C1 C2 C3 C4

Injection

5 6 8 9

FD+ FD+ FD+ FD+ FD+

+ + ++

Capacitance value (pF)

C1circuit breaker at 5 100

C2capacitance of the disconnector at 6 50

C3capacitance of the disconnector at 8 100

C4capacitance f the circuit breaker at 9 50


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Ali El-Akoum , Alain Xemard, EDF R&D

47 k Ohms

0.15 micro F 560 Ohms 27 nF+

+ +

+

+

R0 L0 C0

+

+

+

Representation of the pulse generator

Representation

of the transformer


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Injection of an homopolar pulse at point 3


EMTP-RV Measurements

Pseudo-frequency 289 kHz 296 kHz

Crest value 2 pu. 1.9 p.u.


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3 Models for nuclear plants system

Libraries



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3.1 Turbo-generator



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3.2 Main transformer



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3.3 Auxiliary systems



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3.4 Regulators and protections



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3.5 Excitation system

Induit

TKJ

Inducteur

TKJ

Rotor



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DLL bloc Inverter



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4 Perspectives

Work in progress / futur work:New synchronous machine models (phasors domain approach);

Co-simulation ;

Finite elements methods (Saturation, self inductance );

Libraries :



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Questions ?


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Thank you for your attention!


Usage of EMTP-RV for NuclearPower Plant Studies_EDF

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