光华制药厂液体制剂车间配电毕业设计

摘要：

本设计的内容为380V的车间配电，设计中包括动力配电和车间照明的设计以及弱电系统。动力配电的设计中主要包括负荷电流的计算、电气设备的选择及校验、二次接线、继电保护、导线的选择及校验和平面布置图等几个方面的内容，并且对系统短路和继电保护整定进行了计算。照明设计中主要包括照度的确定、灯具的选择、负荷电流的计算、电气设备的选择、继电保护整定计算和平面布置图等几个方面的内容。

配电方案采用车间电源由厂变电站用YJV型三相四芯橡胶绝缘电力电缆埋地引至车间配电室，通过配电屏及配电箱供给车间的动力、照明及弱电系统的电力分配。主接线采用单母线放射式接线方案。根据设计中提供的负荷进行负荷电流的计算，对电动机进行额定电流估算，以选择电力电缆、车间母线、电气设备、继电保护装置、馈出线路的导线，保证母线和用电设备的安全可靠的运行。继电保护装置的选择是动力配电的主要部分，设计中设置了电流速断保护、欠电压保护、过电压保护，失电压保护及过载保护，这样能够保证在过负荷或短路时，将故障迅速切除，为了提高供电的可靠性，采用了单台设备独立保护的方法，尽量将故障范围缩为最小。平面布置图展示了整个车间的动力，照明及弱电系统的设备和线路的分布。

关键字：配电；车间配电；配电装置；继电保护

Abstract：

The substance of this design is 380V’s low voltage shop PDU.The content of design include power distribution, illuminate distribution and weak electricity system. The substance of power distribution design mainly include the load circuit calculation, selection of electric installation and check, two wirings, succeed the electricity protection, selection of conductor and check, and the plane fixes up that the picture awaits several respect substances, Moreover to the system short circuit and succeed the electricity protection completely has been underway calculation stably. The substance of illumination distribution design mainly include selection of illuminance, selection of lamps and lanterns, load circuit calculation, and the plane fixes up that the picture awaits several respect substances.

Distribution scheme introduce shop power supply is used the type of YJV three mutually four core rubber insulation power cable by the factory transformer substation. The power cable is embedded under ground. Master works a telephone switchboard to adopt single bus bar radioactive type. On the basis of the initial data which supplied in the design, Carry on short circuit electric current calculation, Fix that the bus bar with per one makes a present of out of line the short circuit electric current on the way, The steady check is get about to steady and temperature in the advance side by side, Appropriate with the selection electric cable and electric installation, Bus bar and security are guaranteed in the way of electricity installation, Reliably run. Succeed the electricity protection to be one of entire design key. Putting up electric current velocity in the system snaps to safeguard, Pass through that the electric current is safeguarded and is passed through the burden to be safeguarded, In the hour of can guaranteeing like this being living the burden either passing through the electric current, The circuit breaker can without delay swiftly act, Therefore resects the block. for raising the credibility of the power supply, adopt a single set equipments independently protect of method, as far as possible will break down the scope for least.The plane is fixed up that the picture is open up before.

Keyword:power distribution; shop power distribution; PDU; Electricity protection