海拉尔热电厂供配电系统设计

海拉尔热电厂供配电系统设计摘要热电厂和变电站是电力系统重要的组成部分。目前，其发展的主要趋势是自动化和集成化。作为本次研究的研究内容，本文的设计思路是将整体设计分成各个部分，在完成相应部分的设计后，再将其整合到设计系统中。为了提高其计算的准确性，在等值电路部分需投入更多注意力。变压器、发电机、架空线路等都有其电路模型，但有一定的适用范围，因根据实际情况作出相应调整。在短路计算结果出来后可以进行设备选型部分的校核。断路器、断开开关、变压器等的选择，应按照电工手册，在节约投资、保证安全的条件下进行。在校准过程中，除满足动稳定和热稳定的条件外，还应考虑变电站未来的发展和负荷增长的需求。因此，在确定型号时要保持一定裕量。合理规划防雷保护和继电保护可为系统运行提供保障。因此，本文的设计思路是先对原始数据进行分析。变电站并不是一个孤岛，这就要求我们考虑到变电站与电力系统的密切联系，它在系统中的位置和作用，负荷的性质和需求，以及它的地理位置。其次，选择相应的主接线方案，满足变电站的规划要求。作为连接各种电气设备的接线方式，在综合考虑经济性、可靠性和灵活性的前提下，还应与变电站自身环境相适应。在前面的基础上，进行短路计算。根据变电所与外部负荷及系统的连接状态绘制等效电路图。关键词：电气设备：供配电：短路计算：防雷保护AbstractThermal power plant and substation are important parts of power system.At present,themain trend of its development is automation and integration.As the research content of thisstudy,the design idea of 220kV substation is to divide the overall design into various parts,and then integrate it into the design system after completing the design of the correspondingparts.In order to improve the accuracy of its calculation,more attention should be paid to theequivalent circuit.Transformers,generators,overhead lines,etc.have their own circuitmodels,but they have a certain scope of application,which should be adjusted accordinglyaccording to the actual situation.After the short-circuit calculation results are obtained,theequipment selection part can be checked.The selection of circuit breaker,disconnectingswitch,transformer,etc.shall be carried out in accordance with the electrician manual underthe conditions of saving investment and ensuring safety.In the calibration process,in additionto meeting the conditions of dynamic stability and thermal stability,the future development ofthe substation and the demand of load growth should also be considered.Therefore,a certainmargin should be maintained when determining the model.Rational planning of lightningprotection and relay protection can provide guarantee for system operation.Therefore,the design idea of this paper is to analyze the original data first.Substation isnot an isolated island,which requires us to consider the close relationship between substationand power system,its position and role in the system,the nature and demand of load,and itsgeographical location.Secondly,the corresponding main wiring scheme is selected to meetthe planning requirements of the substation.As a wiring mode for connecting variouselectrical equipment,it should also adapt to the environment of the substation on the premiseof comprehensive consideration of economy,reliability and flexibility.On the basis of theabove,the short circuit calculation is carried out.Draw the equivalent circuit diagramaccording to the connection state between the substation and external load and system.Keywords:Electrical Equipment;Power Supply And Distribution;Lightning Protection;ShortCircuit Calcula目录摘要Abstract.…绪论1海拉尔热电厂供电概述，.31.1海拉尔热电厂供配电系统设计的意义和要求.31.2电力系统需求分析..31.2.1总体需求31.2.2主要需求规范2主接线选择..52.1主接线设计原则.52.1.1运行可靠性..52.1.2系统灵活性….52.1.3整体经济性.52.2主接线的方案选择.52.3主接线的确定.73主变和所用变的选择.93.1主变压器选择93.