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During a process of energy transaction in electricity market, in order to ensure electrical safety and prevent excessively quick growth of electricity price, the concept of contract for difference (CfD) is introduced. Considering the electricity characteristics of large consumers, this paper is in the views of both generators and large consumers which sign CfDs with Grid Corporation respectively,...
With the development of wind power, how to use wind power fully has become an important research. In this paper, wind power accommodation robust model with security constraints considering demand response is built to accommodate wind power as much as possible. The robust model is a two-level optimal model: the upper level is to minimize the curtailed wind power and the lower level is to re-schedule...
ERCOT has moved from a zonal market to an advanced nodal market since December 2010. In ERCOT, combined cycle trains (CCT) contribute a significant share of its total installed capacity. Therefore, how to accurately and efficiently model the CCT is one of the key factors for a successful EROCT nodal market. In order to facilitate market operations and ensure the system reliability, the ERCOT nodal...
In the smart grid environment, appropriate power energy exchange strategies will be necessary for energy intensive industries (EIIs) with industrial power plants. This paper presents a systematic approach that can cope with the integration of industry consumers and an energy exchange strategy aiming at achieving balance between power production and consumption in EIIs. A basic balance model using...
Wind turbine generator system (WTG) is a complex nonlinear system involving some uncertain disturbances, and its working states change multifarious. A fact was discovered that it showed the typical feature of hybrid system by analyzing its characteristics. Therefore, the hybrid dynamic model of WTG was built based on theory of hybrid automata, at same time hybrid control system was designed for solving...
Wind turbine system is a complex nonlinear system involving some random disturbances. Based on analyzing characteristics of wind turbine and requisitions of pitch control, a compound approach was investigated by combining dynamic feed forward and fuzzy-PI to control pitch angle. Fuzzy control can not depend on mathematical model, so it solves the problem of modeling wind turbine system including feed...
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