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The electric power industry landscape is continually evolving. As emerging technologies such as wind and solar generating systems become more cost effective, traditional power system operating strategies will need to be re-evaluated. The presence of wind and solar generation (commonly referred to as variable generation or VG) can increase variability and uncertainty in the net-load profile. One mechanism...
Short-term operation of hydropower stations is a vital part of power grid scheduling. In order to ensure security and stability of power grid, it is of great importance for stations to operate according to the power grid instructions. Yet as far as stations concerned, they'd like to run as an economical way so that the maximal benefit is reaped. To satisfy the demand of power system and optimize the...
With the minimum amount of coal consumption, pollution emissions, the cost of power generation and carbon emissions, this paper analyzes the running status and the output status of the units and builds the multi-objective optimized model of low-carbon and energy-conservation generation dispatching in single phase. Then it takes this as the foundation to establish a dynamic multi-targeting optimized...
Wind power, due to its volatility and unpredictability, is less valuable than an equivalent amount of energy from a dispatchable or constant-power source. To facilitate the economic evaluation of wind, various studies have attempted to identify "wind integration costs", or the reduction in value that must be attributed to wind energy as it is compared to traditional, non-volatile sources...
The inherent variability of wind generation may 1) increase the operating costs of the conventional generators used to follow the net load not supplied by wind capacity (i.e. due to additional ramping costs), and 2) increase the amount of reserve conventional generating capacity needed to maintain Operating Reliability. For customers, the higher operating costs for conventional generators caused by...
At the moment, power systems all over the world are still facing, with new tools at disposal, old problems, made now more urgent due to the increasing amount of power transactions and to the active presence of many new operators of the electricity market. While from the technical point of view the dynamic security assessment and control tools are conceptually the same as those developed in the past,...
In this paper the solution of the optimal power flow dispatching (OPFD) problem by a primal-dual interior point method is considered. Several primal-dual methods for OPF have been suggested, all of which are essentially direct extensions of primal-dual methods for linear programming. The aim of the present work is to enhance convergence through two modifications: a filter technique to guide the choice...
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