基于扩展序列运算的含风电电力系统随机潮流实用计算方法

发布时间：2018-03-27 16:22

本文选题：随机潮流　切入点：风电　出处：《中国电机工程学报》2014年28期

【摘要】：为提高随机潮流计算方法实用性,将序列运算理论引入随机潮流分析,探索一种系统随机变量分布模型未知情形下的随机潮流方法。结合随机潮流计算的特点,分析现有序列运算理论直接应用于随机潮流计算的可行性,并据此对现有序列运算进行扩展。基于所提扩展运算,采用扩展概率性序列描述系统随机性并基于历史数据实现随机变量的序列化,通过各变量对应概率性序列的直接运算快速分析系统潮流分布情况,以克服现有求解方法对基础数据要求过高的不足。IEEE-30节点系统测试表明,所提方法可实现系统随机变量概率分布模型未知情形下的随机潮流计算,可达到较高精度,且速度较快。该方法具有一定的实用价值,也可为面临相同问题的电力系统其他不确定性分析提供借鉴。
[Abstract]:In order to improve the practicability of the stochastic power flow calculation method, the sequential operation theory is introduced into the stochastic power flow analysis to explore a stochastic power flow method under the condition of unknown stochastic variable distribution model. The feasibility of direct application of the existing sequence operation theory to stochastic power flow calculation is analyzed, and the existing sequence operation is extended accordingly. The system randomness is described by extended probabilistic sequence and the serialization of random variables is realized based on historical data. The distribution of power flow of the system is analyzed quickly by the direct operation of the corresponding probabilistic sequence of each variable. The test results of IEEE-30 bus system show that the proposed method can realize the stochastic power flow calculation in the case of unknown probability distribution model of random variables and achieve high accuracy. This method has some practical value and can be used as a reference for other uncertain analysis of power system facing the same problem.
【作者单位】：江苏省电力公司检修分公司苏州运维分部;新能源电力系统国家重点实验室(华北电力大学);
【分类号】：TM744

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