Power system technology 

About: Power system technology is an academic journal. The journal publishes majorly in the area(s): Electric power system & AC power. It has an ISSN identifier of 1000-3673. Over the lifetime, 4618 publications have been published receiving 23975 citations.

Optimal Design of Power System Stabilizer Using Particle Swarm Optimization

Abstract: The performance of traditional power system stabilizer (PSS) is evidently influenced by its parameters. To enhance the damping of power system electromechanical transient model, a new method to optimize the parameters of PSS is proposed. Based on two eigenvalue-based objective functions, the parameters of PSS are optimized by use of improved particle swarm optimization (PSO). The results of both eigenvalue analysis and nonlinear simulation show that the PSS with optimized parameters can effectively damp local and interarea oscillations and enhance the robustness of power system.

Survey on Smart Grid Technology

Abstract: In this paper the connotation of smart grid is expounded, the present research status of smart grid home and abroad as well as the practical significance of developing smart grid in China are summarized. As a reference for relative researchers, this paper analyzes the conditions to develop smart grid in China, and points out the key technological problems to be solved for the development of smart grid in the fields of power network topology, communication system, metering infrastructure, demand side management, intelligent dispatching, power electronic equipments, distributed generation integration etc..

Statistics and Analysis on Reliability of HVDC Power Transmission Systems of State Grid Corporation of China

Abstract: Reliability level of HVDC power transmission systems becomes an important factor impacting entire power grid.The author analyzes the reliability of HVDC power transmission systems owned by State Grid Corp.of China since 2003 in respect of forced outage times,forced energy unavailability,scheduled energy unavailability and energy utilization efficiency.Different reliability indices of HVDC power transmission system interact one another,thus to implement the maximization of property benefit of the power grid it is necessary to build a scientific and reasonable reliability evaluation system.The results of analysis on reliability indices of HVDC power transmission systems home and abroad show that the reliability level of HVDC power transmission systems owned by State Power Grid Corp.of China is in the forefront in the world.

Present Status and Challenges of Big Data Processing in Smart Grid

Abstract: Smart grid operation needs panoramic state data,and during the operation,maintenance and management of smart grid massive heterogeneous and multi-state data,namely the big data,are generated.At present,how to store the big data efficiently,reliably and cheaply and access and analyze them rapidly are important research topics.Firstly,the source of the big data generated in various process of smart grid,such as power generation,transmission,transformation and power utilization,and the features of the big data are analyzed;secondly,the existing big data processing techniques adopted in the fields of business,Internet and industrial monitoring are summarized,and the advantages and disadvantages of these techniques in coping with the construction of smart grid and big data processing are analyzed in detail;finally,in aspects of big data storage,real-time data processing,fusion of heterogeneous multi-data sources and visualization of big data,the chance and challenge brought by smart grid big data are expounded.

Study on Impact of Wind Power Integration on Power System

Abstract: The impact of large-scale wind power integration on power system is studied. By means of the dynamic modeling of wind turbines based on doubly-fed induction generator (DFIG) and power system simulation containing large amounts of wind farms, the impact of wind power integration on grid voltage level and on transferred power of transmission line, the contribution of DFIG based wind turbines to short-circuit current and short-circuit capacity of the grid, the impact of wind power integration on power system transient stability are investigated. The simulation results show that the large-scale wind power integration may cause overload of transmission lines, increase of short-circuit capacity and change of power system transient stability. Corresponding countermeasures to handle above- mentioned issues emerged after the wind farm integration are recommended.