毕业论文设计-某地区电力网络规划设计.doc

摘 要 本次设计的题目是“地区电网规划”,内容分为：电力网络方案的确定、发电厂及变电站电气主接线设计、厂及所用电设计、短路计算、主要设备的选择及校验、输电网络潮流分布的计算等部分。其中输电网络的功率与电压分布及电器主接线的设计非常重要的，因为他们的可靠性、经济性和灵活性直接影响着整个电网的可靠性、经济性和灵活性。还影响着厂用电设计、短路计算、设备的选择校验等内容。本次设计的电力网络方案的确定及电气主接线经过经济性比较后最终所选出的方案中选取可靠性比较高的为最后方案。另外，短路计算部分也是本次设计的重要部分。他的准确性影响着设备的选择及校验，也影响到整个网络的经济性与安全性。本次设计是本着可靠性和安全性的原则来完成的。 [关键词]电力网 主接线 短路计算 潮流计算 Abstract Thinking of this the design subject is “region power network design”The content is divided into :Electric network methord’design, The electric desingn that the mainly wires of substation and power plant . The mill designs in the way of the electricity 、Short circuit calculation、Selection of capital equipment and check 、the power and the voltage of the power system designed. But the the power and the voltage of the power system designed and the main line designed are very important.Because its retiability 、Economy and are directly affecting the entire power network and plant dependability 、Economy and elasticity. Still affecting the m design in the way of the electricity 、Short circuit calculation 、The equipment selection check is up to standard to be contain . This design after the economy comparatively afterwards finally follows in the of choose selects taller one of dependability and the lower ecomomy to act as the last scheme. Besides, the Short circuit calculation affecting the Selection of capital equipment and checkIt also is the very significant Section in this design .Whether or not the right design are able to affect secure quality of entire electric power system .This rule designed in line with dependability and security is completed. [Key word] Power network The waires of electric The load flow Short circuit calculation 前 言 电力工业是国民经济发展的基础工业。随着经济建设的发展，发电设备的容量也在向应增大。为了更好的保证安全运行，经济运行，并保证电能质量，电力系统运行越来越依靠自动控制的提高。 电力系统中同步发电机保有在同步运行状态下，其送出的电磁功率为定值，同时在电力系统中各节点的电压及支路功率潮流也都是定值，这就是电力系统的稳定运行状态。反之，如果电力系统中各发电机间不能保持同步，则发电机送出的电磁功率和全系统各节点的电压及支路的功率将发生很大幅度的波动。如果不能使电力系统中各发电机间恢复同步运行，