Huang Xinbo

Design of an on-line monitoring system of mechanical characteristics of high voltage circuit breakers

On-line Monitorin of Mechanical Characteristics of High Voltage Circuit is a effective means to judge the reliable operation of high voltage circuit breaker. In order to improve the safety, reliability and informatization index of high voltage apparatus in power system, developing a new kind of on-line monitoring system of mechanical characteristics of circuit breaker. This paper introduces an on-line monitoring method for mechanical character of High voltage circuit breaker by using zero magnetic flux Hall Current sensor to monitor the current characteristics of the opening or closing coils and using photoelectric displacement sensor to monitor the dynamic contactor displacement characteristics. The system using DSP28335 finish the ampling control of the chip ADS8505, using C language finish the software programming. Through the CAN bus and RS485, monitoring terminal data information transfer to intelligence component (IED), Finally the paper introduces the experts software of related diagnosis strategy to equipment judgment. The test results show that the system has greatly improved in precision, stability and reliability, and has a greater value in using and generalization.

Notice of Retraction Application of micro-climate on-line monitoring system on UHV transmission lines of 1000 kV

Microclimate environment has great influence on the normal operation of transmission lines, while the meteorological departments of these micro-climate zones can not be a climate characterized by timely monitoring and forecasting. Therefore, micro-weather on-line monitoring system is developed to monitor and collect of transmission lines micro-climate region meteorological parameters, real-time monitoring of transmission lines. The small climatic characteristics of 1000kV UHV lines are very prominent, so the establishment of monitoring points necessary for the safe operation of the transmission line has great significance.

Notice of Retraction Transmission lines galloping on-line monitoring system based on accelerometer sensors

In order to prevent the transmission line dancing, and reduce the loss from the dancing, we developed a remote wireless on-line monitor system based on accelerometer sensors. The whole system consists of tower monitoring distributed station, wireless acceleration sensors node, upper computer software component. In this thesis, describes the technical characteristics of the system, and gives the structure diagram and partial hardware diagram of the monitoring distributed station and wireless nodes, discusses the function of the expert software and the calculation method of fitting wire dancing curve by acceleration value.

Accuracy of an Icing On-line Monitoring System

An icing on-line monitoring system is designed and produced, by which the humidity, the wind speed, the wind direction, the deviation angel of insulators, the gravity variety of the iced conductor can be measured and sent to the monitoring centre by GSM SMS. The accuracy of above parameters is very important to the application of this device, which are analyzed in details. The running results show that the accuracy of the icing on-line monitoring system is very high, and that this system is an effective method to monitoring the icing status of transmission lines.