电力系统自动化Issue(20)：66-71,97,7.DOI:10.7500/AEPS20141125005
计及价格型负荷响应不确定性的概率潮流计算
Probabilistic Load Flow Calculation Considering Price-elasticity Load Uncertainties
摘要
Abstract
With the rapid increase of intermittent energy,typically wind energy,the dispatch mode of power system will develop from “generation tracking load" dispatch to the“source-grid-load" smart interactive dispatch.At the same time,both the power supply side and load side have uncertainties.In order to deal with the problem,this paper considers the uncertain factors in three aspects,the uncertainty of wind power output fluctuation,that of load variation,and that of the interactive process.First, the form of characterization for the price elasticity load response probability considering uncertainty is described.Through the price elasticity coefficients,the uncertainty of the price elasticity load response and the range of response are analyzed to reflect the randomness and subjectivity of the response behavior.Then,based on the traditional mathematical model of probabilistic power flow calculation,the uncertainty demand response quantity is regarded as randomly injected variables and introduced in the “wind power-price elasticity load" interactive probabilistic load flow model to improve the comprehensiveness and accuracy of the demand response mechanism.And the point estimation method is used to calculate the statistical characteristics of power flow value.The digital simulation results of an IEEE 73-bus system show that the model uses the price-elasticity load response to bridge the gap due to the power output fluctuation of wind power.Also,the adverse impact on branch power flow is reduced.The point estimation method used to solve the model is expected to effectively deal with both discrete and continuous uncertainties thanks to the high precision and light workload.关键词
价格型负荷/风力发电/需求响应/不确定性/概率潮流/点估计法Key words
price-elasticity load/wind power generation/demand response/uncertainty/probabilistic power flow/point estimation method引用本文复制引用
曾丹,姚建国,杨胜春,王珂,周竞,石飞..计及价格型负荷响应不确定性的概率潮流计算[J].电力系统自动化,2015,(20):66-71,97,7.基金项目
国家重点基础研究发展计划(973计划)资助项目(2013CB228206) （973计划）
国家电网公司科技项目“柔性负荷参与地区电网调度的关键技术研究与应用”。This work is supported by National Basic Research Program of China(973 Program)(No.2013CB228206)and State Grid Corporation of China （973 Program）
