RELIABILITY AND STABILITY OF ELECTRICAL SYSTEMS OF OIL AND GAS COMPLEXES

The problem of stability of electrical engineering systems (EЕS) is relevant for enterprises of continuous oil and gas production, sensitive even to short-term power supply disruptions, which are caused and inevitable by emergency disturbances, which is defined as dynamic stability. The EЕS of oil and gas facilities, which contain a motor load in the form of synchronous and asynchronous electric motors, complicates the emergency situation in case of loss of stability. This requires defining the boundary of dynamic stability and the parameters characterizing dynamic stability in the form of mathematical models. The analysis of the reliability of the EЕS showed a problem for most objects of oil and gas complexes (ОGC) in the form of external and internal disturbances, leading in some cases to a complete stop or partial collapse of the technological process, due to low dynamic stability, which requires constant maintenance of set voltage levels at the control points of the EЕS and ensuring the necessary balance of reactive power. The article provides information about one of the complex post-accident processes, such as the dynamic stability of electrical systems, violations of which can lead to significant direct and indirect losses, defines the boundaries of static and dynamic stability, proposes mathematical models that determine a dynamically stable EЕS and provides means to increase the dynamic stability of EЕS. As a result of the analysis of the reliability of the EЕS, the numerical integration of differential equations describing the behavior of the EЕS in the form of mathematical models is presented, which shows the parameters that allow to increase the dynamic stability of the EЕS ОGС.