The matters needing to attention of design of electrical system in new expand chemical project, and the measures for the improvement of feasibility of supply and distribution electric were introduced.

介绍了新扩建化工项目电气系统设计的注意事项及在设计中为提高供配电的可靠性所采取的措施。

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This paper includes four chapters: the electrical design description, the power supply and distribution system design, the lighting system design, the weak electricity system design.

本论文共包括四章内容，可分为四个部分：电气设计说明、供配电系统设计、照明系统设计、弱电系统设计。

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Aimed at the characteristics of electrical equipment for sewage treatment plant, design principles of power supply and distribution system are presented.

摘要针对污水处理厂电气设备的特点，提出供配电系统的设计原则。

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