Zhou Desheng

Electronic transformer real-time analysis technology

In the process of intelligent substation construction, electronic transformer has many defects in the beginning, and gradually entered a stage of stable operation. Currently, the primary means for operating personnel operation to found electronic transformer defects is their own warning or the alarm of protection equipment using this electronic transformers data. For those who did not lead to consequences, fleeting anomalies, lack of necessary monitoring tools and instruments. In order to improve the monitoring of running status of the electronic transformer, this paper presents a strategy of real-time operational status analysis for electronic transformer substation based on SV data, to establish a hardware independent reliability evaluation model. Through long-term monitoring and analysis of reliability, stability and correctness of the electronic transformers output data, to assess the reliability of electronic transformer. Through the application of electronic transformer monitoring method based on SV data, SV data exception diagnosis model is established, and the exception information statistics, records. Not only real-time monitoring the SV data status of each electronic transformer, has also established a plurality of electronic transformer monitoring model based on bus and main transformer unit to indirect verification data accuracy of the electronic transformer. This method not only can carry on the real-time alarm of exceptions, also can carry on the long-term track record and regular classification statistical analysis of exceptions, comparing the long-term trend analysis, early warning of possible risks. This method can effectively enhance the level of electronic transformer operation and maintenance security of power grid.