基于不确定性信息下对电网无功规划影响的研究

【作者】 王函韵；

【导师】 甘德强； 胡骅；

【作者基本信息】 浙江大学 ， 电气工程， 2004， 硕士

【摘要】 考虑到电网无功规划研究受国家政策调整、社会经济发展、人口变动、环境变化及自身发展等多因素的影响,不确定性成为规划领域一个突出问题和研究的难点。 随着二层规划这一数学规划研究的提出,因其坚实的经济背景及丰富的数学内涵在近二十年来的发展过程中变得越来越吸引人们的关注。据此本文提出了一种分析不确定性信息对电网无功优化影响的方法,文中运用二层优化原理,建立以网损最小化为上层优化目标、以满足电压约束条件为下层优化目标的电网无功优化模型,并得出二层无功优化最优解异于单层无功优化最优解的条件和判据。 作者在优化工具软件MATPOWER的平台上开发了基于二层规划方法的软件包(MATPOWER for Distriubtion V1.0),同时扩充了关于配网潮流计算模块(MATPOWER for BLPP V1.0),并对IEEE 9节点和浙江某101节点电网进行了计算,结果表明在考虑了负荷变动因素后,所得出的无功规划方案比未计及负荷变动时的方案冗余度大,能够适应不断发展的电网的需要。因此本文提出的方法可为中长期电网规划提供了一种计及不确定因素后新的评价手段。更多还原

【Abstract】 In consideration of the research of optimal reactive power planning suffers the national policy adjusts, social economy development, population change, the environment changes, and so on, the uncertainty problem becomes difficult and outstanding in planning research. With the economic background and abundant mathematics contents, bi-level become more and more attractive in the last year.A new method, which can evaluate the impact of uncertain on optimal reactive power optimization, is presented in this paper. This method makes use of bi-level optimization. In the proposed mathematical model, the sum of line losses under mean parameter settings is minimized in the upper level optimization, while the lower level optimization ensures that voltage constraints are satisfied even under worst case parameters.Author also develops the MATPOWER for Distribution V1.0 and MATPOWER for BLPP V1.0 software package base on the platform of MATPOWER. The numerical results of an IEEE 9-bus system and a 101-bus test system are provided to demonstrate the possible applications of the proposed method.更多还原