Dissertation > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system scheduling, management, communication > The operation of the power system

Security Classification Research and Multi-Objective Economic Optimization for Power System

Author CaoLiangJing
Tutor LuZhiGang
School Yanshan University
Course Proceedings of the
Keywords Security level Safety indicators Static Security Analysis Economic Dispatch Multi-objective optimization Multiple Attribute Decision Making
Type Master's thesis
Year 2011
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Recent years, with the building of a competitive electricity market and the gradual expansion of the scale of power system , as well as energy-saving , environmental protection , economic dispatch policy promulgated many uncertainties in the power system operation has become increasingly prominent , and a variety of operating risks will be difficult to predict . Therefore, the study of power system optimization scheduling coordination model and mechanisms to improve the level of grid scheduling decisions intelligent , extremely important to ensure grid security and economic operation . In this paper, a study from both the grid security assessment and economic operation , the main work is as follows: First , the definition of the the assessment grid security indicators . Model and solution method based on DC power flow static security analysis method and the maximum power supply capacity , on this basis , the definition of risk indicators , risk indicators and safety indicators . These indicators can describe the severity of the consequences of the accident at the grid to identify the place unreasonable power grid structure and component parameters . Then , a more intuitive transmission grid security classification method . The basis of the safety indicators , considering the grid envisioned the consequences of the accident and the grid 's ability to withstand load fluctuations , grid security level is divided into five levels , and to quantify the various grade standards , so as to establish a more complete grid security level evaluation system . Finally, to maximize the economic benefits of the grid , and the establishment of a minimum power purchase cost and net loss the smallest multi-objective economic operation of comprehensive coordination optimization model improved bacterial colony chemotaxis algorithm and applied to multi-objective optimization Pareto optimal solution set . In order to facilitate the decision-makers to pick out the final compromise solution or satisfactory solution , respectively, from the net loss rate indicators and multi - attribute decision making research , gives the best compromise solution . Finally, consider the economic requirements for different security levels to get a satisfactory solution for both security and economic .

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