Исследование фазового управления для обеспечения синхронной динамической устойчивости

Abstract

Background: During operation of power systems there is the problem of synchronic transient stability of generators for nearby and prolonged faults. Possible control actions to ensure dynamic stability are the following: electric braking, emergency regulation of turbine, partial generation-shedding. However these control actions cannot be applied in all cases. Therefore, in this paper we consider another possible kind of the control actions - the phase control. To apply phase control for the transient processes it is necessary to solve the tasks: dosage of impacts by value of the phase shift and the time of control activation/ removal. Materials and methods: In the study we used the materials describing the technical means for the implementation of phase control and the publications of other authors. The impacts dosage in the form of phase control is modelled on the basis Mathcad and Mustang software package. Results: It is shown that for the successful phase control which maintains synchronic transient stability a certain range of the phase shift and the time for activation and removal of the control action are required. Conclusions: The phase control can be an effective tool for maintaining synchronic transient stability in some specific conditions. Further research of phase control should be directed to the development of its applications using specific hardware.