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Solution of SF6 densimeter without disassembly and calibration (SF6 three-way valve)
2018-08
Requirements for SF6 densitometer in the operation regulations of the State Grid, DL/T596-1996 Preventive Test Procedures for Electric Power Equipment implemented by the Ministry of Electric Power on January 1, 1997: "SF6 gas densitometer (including setting value) inspection" is included in the No. 13 of the "switchgear" section. The test time required in the regulations is 1-3 years, after major repair or when necessary, the specific calibration time is formulated by the pilot plants in each province, and it is generally appropriate to calibrate at least once every 3 years, It is applicable to high voltage circuit breakers and combined circuit breaker GIS of ABB, Siemens, Schneider, Areva and other brands. 1. Current routine calibration
Manufacturing and debugging process of electric control system
3. Making the control cabinet and on-site construction 1) When making the control cabinet, the engineer shall first draw the power incoming wiring diagram of the PLC and the power supply wiring diagram of the output actuator; 2) Draw the layout of components in the electrical cabinet and the mutual wiring diagram; Draw the layout of control panel components. 3) If the power supply of PLC has interference, filter and isolation transformer shall be set. In addition, the engineer shall separate the signal line, power line and power line and use trunking or metal pipe for wiring. 4) Special attention shall be paid to the safe, correct, reliable, reasonable and beautiful installation, and the grounding of PLC shall be properly handled, and the anti-interference ability of the system shall be improved
Application of Ring Main Unit in Power Distribution System
2020-02
In recent years, with the development of China's market economy and the progress of science and technology, China's electric power enterprises have also carried out reforms in the spring breeze of reform and opening up. However, as far as the automation development of the distribution network system is concerned, China is still at the primary stage of development. As the distribution network construction is compared with the construction of the main network, the investment of power enterprises is less, which leads to the low level of automation of the power system distribution network of power enterprises.
Smart grid makes life better
With the development of society, smart grid has gradually become an important infrastructure in modern society. Just like the changes brought to our lives by the Internet 20 years ago, the smart grid will bring more changes to our production and life.