Interval Affine Analysis of Distributed Photovoltaic Acceptance Capacity Based on Interval Overvoltage Risk
With the continuous increase of distributed photovoltaic penetration in the distribution network,the research on photovoltaic acceptance capacity of distribution network has attracted more and more attention,and scientific and reasonable photovoltaic acceptance capacity evaluation technology can effectively guide the planning and construction of photovoltaic.Thus,this paper proposes an interval affine analysis method of distributed photovoltaic acceptance capacity based on interval overvoltage risk.Firstly,it analyzes the influence of distributed photovoltaic access on the distribution network,and the affine interval of voltage is obtained by uncertain power flow calculation.Then,it uses the static voltage index to eliminate the weak nodes of static voltage stability.On the basis of the random scene generation method of photovoltaic acceptance capacity,the paper introduces the concept of interval overvoltage risk and gives the calculation method of uncertain capacity of photovoltaic acceptance considering interval overvoltage risk.Finally,by adjusting the interval overvoltage risk threshold value in the IEEE 33-bus distribution system,the obtained photovoltaic acceptance capacity has been greatly improved.The results show that the proposed strategy can accurately estimate the overvoltage risk of the distribution network caused by the uncertainty of photovoltaic planning,and give a reasonable photovoltaic acceptance capacity.
photovoltaic acceptance capacitystatic voltage indexrandom scene simulationovervoltage riskuncertaintyphotovoltaic configuration scheme
万方数据
维普
