基于异步迭代模式的电力系统分布式状态估计方法

发布时间：2018-03-29 15:48

本文选题：电力系统　切入点：分布式状态估计　出处：《电力系统自动化》2014年09期

【摘要】：互联电网安全运行所要求的一体化建模与计算对分布式状态估计提出了新的要求,为了给后续的基于异步迭代模式的分布式能量管理系统高级应用提供一个较为精确的基态计算模型,也为解决传统两层式状态估计中出现的边界失配量较大的问题,提出了一种基于异步迭代模式的分布式状态估计方法。该方法基于等值网等值量测修正思想,通过构建关于边界状态量的不动点迭代格式,实现基本的分布式状态估计方法;通过在异步迭代过程中,强制外网等值量测数据为非坏数据,再经协调计算,借用外网量测信息解决了内网靠近边界区域的不良数据难以辨识的问题。以IEEE 118节点系统为标准算例进行测试,测试结果验证了所提方法的有效性。
[Abstract]:The integrated modeling and calculation for the safe operation of interconnected power network puts forward new requirements for distributed state estimation. In order to provide a more accurate ground state computing model for the subsequent advanced applications of distributed energy management systems based on asynchronous iterative mode, and to solve the problem of large boundary mismatch in the traditional two-layer state estimation, this paper proposes a new method to solve the problem. This paper presents a distributed state estimation method based on asynchronous iterative mode, which is based on the equivalent network equivalent measure correction idea, and implements the basic distributed state estimation method by constructing fixed point iterative scheme about boundary state quantity. In the process of asynchronous iteration, the external network equivalent measurement data is forced to be non-bad data, and then coordinated calculation, The problem that the bad data near the boundary area of the inner network is difficult to identify is solved by using the measurement information of the outer network. Taking the IEEE 118-bus system as a standard example, the test results show that the proposed method is effective.
【作者单位】：新能源电力系统国家重点实验室华北电力大学;
【基金】：国家自然科学基金资助项目(51277070) 中央高校基本科研业务费专项资金资助项目(12ZP01,12MS21)~~
【分类号】：TM744

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