STATIC STABILITY OF PARALLEL OPERATION DOUBLY-FED GENERATORS IN THE ELECTRICAL SYSTEM
Single working operating configuration of doubly-fed generator is generally considered in stability studies. This circumstance and increasing interest to this type of generators led to the situation, when knowledge about parallel operation of several doubly-fed generators is becoming necessary. The static stability of single and parallel operating doubly-fed generators on long-distance power transmission line was investigated in this article. The results of this study showed that the traditional control law does not provide the necessary stability level in all possible operating conditions. Nes excitation control law to improving static stability of parallel operating doubly-fed generators was proposed. Expressions given in the article allow determining the coefficients of the proposed control law, depending on values of the machine parameters, the equivalent line inductance, working condition of power system etc.