【作者】 王渊；

【导师】 莫耀赐；

【作者基本信息】 广西大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 当电力系统发生复杂故障或开关、保护存在较多误动、拒动以及因信道干扰发生信息丢失等诸多不确定因素时，目前基于开关和保护信息的诊断方法已经不能取得满意的结果，必须寻找新的信息源。随着继电保护及故障录波信息网的建立，丰富的录波信息为进一步诊断提供了基础。 本文根据电力系统目前的实际运行情况和今后的发展，提出了一种合理利用采集信息进行分层故障诊断的方法。对在复杂故障情况下利用故障录波信息进一步诊断的方法进行研究，提出了虚拟保护的诊断思想，有效地弥补了利用开关、保护信息诊断的局限性。 同时利用专家系统的方法，构成了变电站继电保护故障信息处理系统。利用VB和SQL Sever技术构造了初步故障信息处理系统。最后对故障信息处理系统的应用前景提出了展望。更多还原

【Abstract】 The present diagnosis methods based on switch and protection messages can not provide the satisfactory result while the complex fault occurs in the power system or uncertain factors appear, such as mal-operation?non-operation and missing messages on account of channel disturbance, so using a new source of information is necessary. With the development of the network of protections and fault recorders, the further diagnosis can be carried out in the light of the ample recorded fault data.According to the current running and coming development of the Electric Power System, this paper presents a reasonable approach using collection information for Hierarchic Fault Diagnosis. Under the circumstance of complex fault, it is highly important how to do further diagnosis with the help of recorded fault data. A method of virtual protection is put forward, this method effectively makes up the limitation of diagnosis with only switch and protection Information.At the same time, utilized the method of the expert system formed the trouble information process system of relay protection of the transformer substation. Utilize VB and SQL Sever structure preliminary trouble information process system. At last, proposed looking into the distance to the application prospect of the trouble information process system.更多还原