Electrical installation construction of a company's liquefaction equipment project programme
2.1 Scope: * * * Gas Company 40000 m3/h oxygen generator+230 TPD liquefaction equipment engineering electrical lightning protection grounding power distribution, power piping, cable, bridge, cabinet installation and construction, as well as the installation and commissioning of all electrical equipment 2.2 Content: * * * Gas Company 40000 m3/h oxygen generator+230 TPD liquefaction equipment project 6 # air separation unit. According to the power requirements of process equipment and the characteristics of the device, the whole plant is equipped with a power transformation and distribution system (power transformation and distribution substation step-down station and power distribution system), which uses a comprehensive protector to centrally monitor the electrical parameters such as voltage, current, power factor, active power, etc. of the operation of each process production equipment in the device. The power transformation and distribution system is equipped with quick break, overcurrent, low voltage, differential, imbalance Zero sequence excitation fault protection, among which the air compressor is a synchronous motor, and the rest are asynchronous motors. The air compressor, medium and low pressure oxygen compressor, and medium and low pressure nitrogen compressor are all started by reducing voltage. The electrical equipment involved in this project includes transformers, armored switchgear, GCS low-voltage switchgear, EPS, excitation cabinet, distribution box, etc., and other bridges, cables, steel pipes, section steels, etc. Electrical installation, commissioning and commissioning cooperation. 2.3 Features: 2.3.1 High voltage microcomputer protection adopts ABB integrated protection system. This air separation unit (6 # air separation unit) is driven by high-voltage synchronous machine and asynchronous motor. 2.3.2 The electric control system of this device adopts Hang Yang's control process and technology. The design requirements shall be strictly followed during construction; The electrical construction sequence requires reasonable arrangement of the construction period to ensure the project progress.
