摘 要电能是现代工业生产的主要能源和动力，随着现代文明的发展与进步，社会生产和生活对电能供应的计量和管理提出了越来越高的要求，机电设备厂供电系统的核心部分是变电所。变电所主接线设计是否合理，关系到整个电力系统的安全、灵活和经济运行。本设计在机械厂具体资料的基础上，依据变电所设计的一般原则和步骤，完成了变电所一次系统的设计。为适应机械类企业用电负荷变化大、自然功率因数大的特点，该设计中采用并联电容器的方法来补偿无功功率，以减少供电系统的电能损耗和电压损失，同时提高了供电电压的质量。此机电设备厂变电所一次系统的设计包括：变电所主接线方案的选择；进出线的选择；短路计算和开关电气设备的选择；根据设计要求，绘制变电所一次系统图等。关键词：变电所，变压器，短路电流，电气设备 ABSTRACTElectricity is the main modern industrial production, energy and power, along with the development of modern civilization and progress, social production and living to the electric power supply tricks or management put forward more and more high demand, Machinery factory power supply system is the core part of substation. Substation design is reasonable or not, main connection relationship to the whole power system security, flexible and economic operation. This design in machinery factory concrete material basis, according to the general principle and steps of substation design, completed the first system design. Substation in order to adapt to the machinery enterprise electricity load change is big, the characteristics of natural power factor, the first used in the design of the principal capacitor compensation reactive power just sent to reduce power supply system of electric power loss and voltage loss, and at the same time, improve the quality of power supply voltage. This factory substation system design including: one of the main substation wiring schemes choice; In the choice to qualify； Short circuit calculation and ...
