多源异构电网参数融合方法及工程应用

调度中心各专业独立构建与维护各自模型参数库,缺乏协同机制导致多源电网运行参数一致性差。针对性提出一种多源异构电网运行参数融合方法。提出了对象名称匹配知识库的概念,提炼了交流线路、主变绕组及发电机3种对象名称的特征向量与匹配规则,并将其应用于两级相同专业对象名称匹配和同级不同专业对象名称匹配,实现了不同系统参数名称之间的互相辨识及对应;引入参数差异度指标衡量不同来源电网参数之间差异的大小,通过纵向参数融合与横向参数融合手段实现多源异构参数的有机融合,显著提高了不同来源参数之间的一致性。南方电网220kV及以上大模型中的应用实践证明,该方法对于提高不同专业参数的一致性、改善基础数据的质量具有重要作用。

A Fusion Method for Multi-source and Heterogeneous Parameters of Power Grid and Its Engineering Application

With each profession independently developed and its model parameter library in the dispatch center maintained by itself, poor consistency among multi-source parameters of power grid for lack of a coordination mechanism is inevitable. In view of this, a fusion method for multi-source and heterogeneous parameters of power grid is proposed. The concept of the object name matching knowledge database is put forward, and characteristic vectors and matching rules for three kinds of object names are refined, such as AC lines, transformer windings and generators, which have been applied in the object name matching for the same profession of two levels and different professions of the same level, realizing mutual recognition and correspondence among the parameter names of different systems. The differential index of the parameter is introduced to measure the difference among different sources of parameters, and the organic fusion for multi-source and heterogeneous parameters has been achieved through vertical parameter fusion and transverse parameter fusion, significantly improving the consistency among the parameters from different sources. This method has an important role in improving the consistency among parameters from different professions and enhancing the quality of basic data, which has been proved by actual application in the 220 kV and above power grid of China Southern Power Grid. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2012AA050212).