• Categories:Living home
• Time of issue:2021-11-30 15:09
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(Summary description)Focusing on the design and operation analysis of the wall switch socket, this paper describes the basic requirements for the main junction line, the basic form of the main junction line, the line holding points and examples of AC and DC traction substation power departments, and introduces the problems and factors that should be considered in the selection and evaluation of the main junction line from the aspects of technical economy and reliability analysis.  
The main junction line of wall switch socket reflects the basic structure and function of the power department. In operation, it can show the connection mode with high-voltage power grid, the relationship between power transmission and distribution, and the operation mode of primary equipment in substation, which becomes the basis of actual operation; In the design, the determination of the main junction line has a significant impact on the selection of electrical equipment of switch sockets on the wall of the substation, the layout of distribution devices, the configuration and calculation of relay protection, and the selection of automatic devices and control modes.
At the same time, the main wiring of wall switch socket plays a decisive role in the reliability, power quality, operation flexibility and economy of transmission system. Therefore, the main junction line of wall switch socket and its combined double socket electrical equipment are the main part of the power department.
For household and industrial power distribution devices (0.7 kV voltage for household and industrial power distribution devices), it mainly describes the basis for determining the installation Quan distance of indoor and outdoor devices, the composition and characteristics of various power distribution devices, as well as the basic selection and design layout principles of power distribution devices. The main junction line of wall switch socket appliances in the power department (including switching station and step-down substation) refers to the circuit for receiving and distributing electric energy composed of various electrical components and connecting wires such as main transformer, household high-voltage resistant wall switch socket and equipment. The single line or three line wiring diagram that represents the above-mentioned wall switch socket electrical equipment and wires with the equipment symbol and graphics specified by the power department and is connected as required according to their function and operation sequence is called the main wiring diagram of wall switch socket electrical appliances. It not only indicates the specification and quantity of each main equipment, but also reflects the relationship between the connection mode of each equipment and the electrical circuit of the wall switch socket, so as to form the main system of the electrical part of the wall switch socket in the substation.