Parmi toutes nos activités, le travail occupe une place centrale dans nos sociétés et il n’échappe pas aux profondes transformations de la société. Les trajectoires professionnelles ne sont plus linéaires ni stables, elles introduisent moins les individus dans des collectifs socio-catégoriels. Comment les sujets se construisent-ils aujourd’hui ? Quel est l’impact de l’individualisation sur la dynamique identitaire socioprofessionnelle, dans un contexte où l’emprise catégorielle est en perte d’influence ? Cette thèse a comme objectif d’approfondir la question de l’identité et les méthodes qui s’y adjoignent dans un contexte organisationnel en profonde mutation. Je présenterai un cadre théorique pluridisciplinaire et une double démarche exploratoire (ego-écologique - Zavalloni, 2007), conduite auprès de sujets contrastés par leur expérience professionnelle. Nous pourrons ainsi observer la dynamique identitaire, ses composantes, ses relations, son contexte psychosocial, en faisant émerger les processus qui la sous-tendent. A l’heure des démarches compétences dans les organisations et de la personnalisation du travail, l’intégration du projet de soi (Kaddouri et Barbier, 2006) et du système capacitaire (Costalat-Founeau, 2009) comme fondements des dynamiques identitaires, ouvre de nouvelles perspectives à la compréhension des processus mis en œuvre dans la construction de soi et de réalisation de soi. Par voie de conséquence c’est la constitution du sujet de l’action qui est ici abordée. / Among all our activities, the work occupies a core place in our society and can not escape the profound social transformations. The career paths are not linear nor stable, they don’t introduce individuals in social categories as in the past. How individuals are built today? What is the impact of individualization on social and professional dynamics of identity in this context? This thesis is intended to deepen the question of the identity and its methods in a radically changing organizational context. I present a multi-pronged theoretical framework and a double exploratory approach (ego-ecological - Zavalloni, 2007), conducted with individuals opposed by their professional experience. We can thus observe the dynamics of identity, its components, its relationships, its psychosocial context, bringing out the processes that underlie it. At time of competencies management and personal work, the integration of the self-project (Kaddouri & Barbier, 2006) and the capabilities system (Costalat-Founeau, 2009), as the basis of identity dynamics, opens new perspectives for understanding the processes used in self-construction and self-realization. As a consequence it is the constitution of the subject of the action that is addressed here.

Before putting new power distribution installation into operation and before the connection to grid is needed to validate connectivity of the installation. Purpose of verification is to check compliance with the technical conditions of relevant regulations. Ones of the most important conditions include compliance with the prescribed connection voltage tolerance at the connecting device – and even in the worst-case – and provide necessary short-circuit capability of the other devices in a connected grid. Main task of my master’s thesis is just checking that the voltage tolerance and the control of short-circuit resistance. The calculations were performed by using the dispatching control system that works with the current parameters of the distribution system equipment 110 kV. Theoretical part of thesis describes two main points of the method of calculating the network operation and the method of calculating short-circuit conditions. Based on these theoretical processes are relevant input data processed and evaluated in the dispatching control system. The calculation and evaluate results are presented in the final part of the master’s work.