The type of fault recording screen review council minutes 19 years from October 15 to 17 in the convening of the type of fault recording screen of the council. The meeting was co-chaired by the Electricity Management Bureau, the Relay Research Institute, the Municipal Economic Commission, the Municipal Science and Technology Commission, and the Electronic Industry Corporation. The conference was attended by North China, Northwest Electric Power Design Institute, North China Electric Power Test Institute, Tianjin, Hebei, Shanxi, Inner Mongolia Electric Power Bureau, Henan Electric Power Research Institute, North China Electric Power College, Beijing, Baoding Power Supply Bureau, a total of 42 units, 66 representatives. The meeting reviewed the technology identification meeting of fault recording delay memory device jointly developed by North China Electric Power Test Institute and Fujian Jidong Radio Factory in Beijing in 19 years. The appraisal meeting believes that the device is mature in principle, and its technical indicators and reliability have reached the domestic advanced level. The well hopes to properly modify the structure and indicators of the device. At the same time, it is matched with the fault recording screen to suit the needs of the electric operation department. To this end, through the Baoding Relay Factory, Fujian Jidong Radio Factory, North China Electric Power Authority General Dispatch Office, North China Electric Power Test Institute jointly worked to develop a prototype fault recording screen prototype. At the meeting, Baoding Relay Factory and Jidong Radio Factory introduced the performance and principle of the type fault recording screen and signal delay memory device to the delegates. The delegates used the transistor circuit for the starting device and the thyristor component for the outlet circuit. Satisfied, and praised the following improvements: the delay device of the product is based on economical and practical, the sampling speed is changed from 400 points per week to 200 points, and the total delay time is changed from 200 milliseconds to 100 milliseconds. The barrier process of the system fault waveform and the waveform of the transient electrical quantity before the fault provide an ideal means. The delegates visited the type of fault recording screen sampler and performed the wave recording operation and the pull-in high-pressure oil switch simulation test. The delegates are satisfied with their performance. Through careful evaluation, they agree that the fault recording screen has good performance and the technical indicators are advanced and reasonable. Especially after the signal delay device is used, the light source lighting speed and the motor double voltage start can be appropriately reduced. Requirements. The meeting considered that the appropriate improvements in the entire screen structure could be applied to the power system. It is also recommended that the manufacturer carry out small batch production. In order to better promote this technological achievement, the delegates hope that the manufacturer will consider adding power vibrators to further expand the problem of the product. It is also desirable to adjust the color of the screen body and the screen surface or to achieve satisfactory color matching according to user requirements. year month day
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