This study contains a comprehensive scientific analysis of modern problems of risk management in the sphere of state economic security provision using professional liability insurance. The elements of the mechanism for providing economic security are defined, namely: subjects, objects, and instruments of influence. It is stipulated that insurance is the means to provide state economic security....

Abstract: Voltage instability is a major threat for security of power systems. Preserving voltage security margin at a certain limit is a vital requirement for today’s power systems. Assessment of voltage security margin is a challenging task demanding sophisticated indices. In this paper, for the purpose of on line voltage security assessment a new index based on the correlation characteristic...

This paper introduces a new approach for scheduling security constraint unit commitment (SCUC) including wind farms. Because of uncertainty in wind power production, we tried to develop a new method for incorporating wind power generation in power plant scheduling. For this, wind power generation modeled with unit commitment in a non-linear optimization problem and simulated by submitting diffe...

The issue of unit commitment is one of the most important economic plans in power system. In modern and traditional power systems, in addition to being economical of the planning, the issue of security in unit operation is also of great importance. Hence power system operation confronts units’ participation and input considering network security constrains. The issue of units’ participation is ...

A conventional steady-state power flow security check only implements point-by-point assessment, which cannot provide a security margin for system operation. The concept of a steady-state security region is proposed to effectively tackle this problem. Considering that the commissioning of the increasing number of HVDC (High Voltage Direct Current) and the fluctuation of renewable energy have si...

russia is considered the core of the former empire of the ussr. many social and structural features of the soviet :union: could be observed in the development of russia’s political power and strategic attitude. geo-political competitions between russia and the west can be traced back to the 19th century. these competitions were shaped within the framework of the balance of power system in inter...

the european countries' stances towards bush's pre-emptive war were hard. this has been caused by some factors; first, the political european tradition of balance of power in regional and international system is still continuing. second, the pre-emptive war has led to an increase of u.s mobility power in european security field. and at last the pre-emptive war has led to fractions and...