基于可靠度与可观度的量测优化配置研究

发布时间：2018-06-21 23:31

本文选题：量测配置 + 可靠度　；参考：《电工技术学报》2014年12期

【摘要】：随着电力系统运行的发展,电力系统运行中节点数据完全缺失的情况时有发生,这大大影响了系统状态估计时的可观测性;同时,现有的可观测性理论和方法不能很好地反映系统状态变量估计精度和数值稳定性。针对上述问题,本文首先结合N-1可靠性检验原则与节点电气介数定义可靠性损失指标与可靠度指标,对量测系统进行配置与优化,保证在任意一个节点完全缺失数据的情况下系统完全可观;然后,在此基础上量化系统的可观测性,提出可观度的概念及相应的精度与数值稳定性指标,运用灵敏度分析理论找到可观度指标的最大影响因子继续优化量测配置,保证厂站缺失数据的情况下,系统完全可观且具有良好的数值稳定性与估计精度。最后以IEEE 14与IEEE 39节点系统为例,验证了本文所提方法的正确性及有效性。
[Abstract]:With the development of power system operation, the complete absence of node data in power system operation occurs frequently, which greatly affects the observability of system state estimation. The existing observability theories and methods can not well reflect the estimation accuracy and numerical stability of system state variables. In order to solve the above problems, the reliability loss index and reliability index are defined based on the N-1 reliability test principle and the electrical intermediate number of the node to configure and optimize the measurement system. Then, the observability of the system is quantified, and the concept of observability and the corresponding accuracy and numerical stability index are proposed. By using the sensitivity analysis theory, the maximum influence factor of observability index is found to continue to optimize the measurement configuration, so as to ensure that the system is completely observable and has good numerical stability and estimation accuracy in the absence of data at the plant and station. Finally, IEEE 14 and IEEE39 bus systems are taken as examples to verify the correctness and effectiveness of the proposed method.
【作者单位】：燕山大学电力电子节能与传动控制河北省重点实验室;国网冀北电力有限公司秦皇岛供电公司;国网石家庄供电公司;
【基金】：国家自然科学基金资助项目(4020427) 高等学校博士学科点专项科研基金联合资助课题(20131333110017)
【分类号】：TM732

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