Validation Study of Maghrab Europe Electric Power Interconnect

 C.BOUCHOUCHA ^[1], S. CHEBBI ^[2], S.MEJRI ^[3] and M. ANNABI^[4]

¹ Engineer STEG, National Dispatching,  ²  Teaching – researcher at l’ESSTT Tunis,

³ STEG, Head of division Technical Studies in the Dispatching, Radès Tunis, ⁴ Professor  at the ESSTT, Tunis,

Abstract

In this paper we propose the validation of the electric models of the Maghreb system inter-connected to Europe by the simulation of the real cases of incidents, in order to obtain results in conformity with the observations made at the time of the defects recorded in this system. In order to achieve this objective the study was based on two parts. A first relates to the theoretical validation in open loop of the models suggested and a second part based on digital simulations for a practical validation. The first part of the study which relates to the theoretical validation of modeling in open loop is based to dynamic measures of performances which are the first tests of the electric model validation. These tests which it is necessary to apply to a system of control (voltage regulator, speed regulator…), to translate the characteristics of the system giving an image on its effectiveness opposite to stability in a electric system. The elementary system of production made up of the alternator and the associated regulators (speed and voltage) are subjected to an excitation by level. Its answer is evaluated according to time in order to conclude on its stability in loop open (disconnected from the whole of the electric system). It is a question individually of testing in this stage each generator with its regulators isolated from it in order to make sure that the associated regulators are not at the origin of instability in closed loop. With regard to the second part of the validation study, we proceeded to a treaty of sensitivity in order to determine the most influential factors during the transient state (prim mover) which takes place following the loss of a production. Then we checked the validity of the conclusions drawn from the treaty of sensitivity on real incidents (which the data are available), the most influential factors are adjusted in order to approach the maximum of the real recordings.

 Keywords: voltage regulator, speed regulator, validation, dynamic performance, recordings.

(P1110704002, 757 KB)

Biographies:

A/Prof. Dr. Souad Chebbi is an associate professor at the high school of sciences and technology of Tunis (ESSTT); she has obtained her mathematics university bachelor’s in1975. She has continued her superior studies in high teacher level school of technical education. Her first level university studies have ended up by a master’s degree in electrical engineering with good distinction in1980. Afterwards, she has obtained her diploma of extensive studies in electronics in 1981 with very good distinction ( in the same school), the research theme that has been treated in order to obtained this diploma was the study of the static stability of mono-machines’ network. She has also prepared a doctorate thesis in electrical engineering which was directed by professor Ribbens-Pavella of Montefiore institute in Liege-Belgium. The research theme was related to the  transitory study of the big electrical networks. The thesis has been held at the high teacher level school of technical   education in Tunis in1983, with very honorable distinction.. She is a member of the research team ATMAC at ESSTT. Her activities’ supervising: is the framing of some DEA (master degree) and Theses. She was invested in the safety  of the electrical supply networks’ study and the energy management

Chokri Bouchoucha has passed his mathematics university bachelor’s with approximately good distinction, in 1997, he has obtained his engineering diploma in electrical engineering from the national school of engineering in Monastir (ENIM). In 2002, he has obtained his obtained his diploma of extensive studies in automation production engineering from the school of sciences and technology of Tunis (ESSTT). From that moment, he has been an engineer of networks studies, working in the Tunisian Society of Electricity and Gaz. He is also a departmental manager in network functioning and member of Maghreb committee of electricity (COMELEC)-sub-group of studies. At the moment, he is preparing a thesis on the securizing systems of electrical networks within the team ATMAC directed by Professor Mohamed Annabi.

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