中文摘要：

基于数学上严格的主从分裂法,通过对现有成熟软件的较小修改,实现了交直流混合实时状态估计器,并在南方电网投入了现场试运行。分析了实现中提出的特殊问题,包括：软件总体流程、直流系统的参数辨识、直流系统可观测性分析和直流系统量测的处理,提出了相应的解决措施。分别针对南方电网的核心模型和全模型,报告了现场应用经验和效果,特别是报告了针对全模型的24 h持续运行的详细情况,验证了状态估计的精度、效率、收敛性和24 h持续运行的可靠性。

英文摘要：

Based on a rigorous method called the master-slave-splitting method,an AC/DC hybrid state estimator is implemented with minor modification on the state estimation software available for a purely AC system and put into trial operation on the spot in China Southern Grid（CSG）.Specific implementation issues are discussed and treated,including the software s main framework,DC system parameter identification,DC system observability analysis and DC system measurements conversion.Field application experience and effects of the state estimator developed for both the CSG core model and complete model are reported, especially the detailed results of 24-hour continuous operation of the estimator concerning the CSG complete model, to show the accuracy, efficiency, convergence and reliability of 24-hour sustained operation.