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Zhang Z.,Beijing Union University | Fang X.,Beijing Union University | Yin M.,Beijing Beikai Electrical Co. | Tan M.,Beijing Union University
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings | Year: 2011

The design of data recorder, which is controlled by a MCU and uses USB flash disk as data storage media, is introduced in this paper. Hardware composition is discussed and software function is described. Measurement error treatment is also discussed. Way of connection for different transducers is also included. © 2011 IEEE. Source

Yang Q.,Beijing Applied Senior Technical School | Xue J.,Beijing Beikai Electrical Co. | Wang R.,Beijing Beikai Electrical Co. | Yin M.,Beijing Beikai Electrical Co. | Guo D.,Beijing Beikai Electrical Co.
Gaoya Dianqi/High Voltage Apparatus | Year: 2014

The structure, parameters, and performance of the ZF19-252(i)/T3150-50 GIS developed by Beijing Beikai Electric Co. , Ltd. are described with emphasis on the performance examination of the intelligent device along with host equipment. In accordance with the principle of integrated design, manufacture, and examination, online monitoring device is introduced to make the GIS realize digitized measurement, networked control, visualized display, integrated function, and information interaction. The performance examination of the model GIS has been conducted in Xi' an High Voltage Apparatus Research Institute Co., Ltd. according to the specification of State Grid. Source

Cao Z.,Beijing Beikai Electrical Co. | Sun R.,Beijing Beikai Electrical Co.
Gaoya Dianqi/High Voltage Apparatus | Year: 2014

The production of ceramic resistors in foreign countries is introduced. The characteristics of the resistors and the requirements for their application to circuit breaker are discussed. The curve of the voltage coefficient versus the resistivity of the resistor is fitted with a formula. A program is coded with the software VB6 to calculate the parameters of two 550 kV ceramic resistors made in China, such as the temperature rise, the resistance variation, the constent of cooling time, and the safety coefficient of reverse voltage, and preliminary comparative analysis is performed. This study may provide a reference to the design of closing resistor of new circuit breakers. Source

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