Research On Available Transfer Capability Of Wind Farm Incorporated System Considering Multiple Meteorological Factors

With the deregulation progress in electricity market,available transfer capability(ATC),as an important indicators in power systems,can provide detailed information of power systems for operators and power market participants,to ensure its safety,stability and economy.However,with the shortage of energy and the deterioration of the environment,large-scale wind farms have incorporated into power grid with wind's characteristics of being intermittent,random and volatile,which brings uncertainty into the calculation of ATC;what's worse,since the 21 st century,the global warming trend is intensified,resulting in a more frequent occurrence of typhoon,heavy rains,thunderstorms,which brings new challenges for power grid dispatching and perplexes the assessment of ATC in Power Grid.Thence,To assess ATC accurately is of great theoretical and practical significance for power systems.Studying on the research of available transfer capability of wind farms incorporated systems considering multiple meteorological factors,the following work have been done in this paper: Combining Monte Carlo simulation with probability statistic methods,traditional uncertainties in power system is simulated.Based on optimal power flow,the value of ATC and its related evaluation indicators can be calculated.On the above basis,taking the southern coastal areas in China for example,overhead line failure rate model considering multiple meteorological factors is established,which can consider the influence of weather risk sources on overhead transmission line in real-time and synthetically and also can increase the accuracy of evaluation of ATC.Furthermore,based on the wind speed Weibull distribution,mathematical model of large scale wind farms' power output is established.And Monte-carlo simulation method is used to simulate the intermittent and randomness of wind power output.The impact of large-scale incorporation of wind farms into power system is analyzed from the incorporating position,the penetration rate,wind speed shape these three aspects.Finally,from the comprehensive analysis of IEEE 118 bus test case,the accuracy and feasibility of the algorithm proposed in this paper is verified,which can provide dispatchers and electricity market participants with accurate and detailed information of power grid system.