1、 第 1 页 共 74 页 摘要摘要 为满足经济发展的需要，根据有关单位的决定修建 1 座 110KV 延长 变电所。 本工程初步设计内容包含变电所电气设计，新建的延长变电所从 110KV 侧清涧变电所受电，其负荷分为 35KV 和 10KV 两个电压等级。 通过技术和经济比较，现采用下列方案： 1. 内设两台三绕组变压器，电压等级为 121/37.8/11。 2. 110KV 进线采用内桥接线形式。 3. 本工程初步设计内容包括变电所电气设计。 4. 35KV 和 10KV 配电装置同样采用单母线分段接线。 5. 所用电分别从 10KV 两端母线获得。 关键词关键词： 变电所 主变压器 潮流
2、计算 短路计算 设备选型 第 2 页 共 74 页 AbstractAbstract For satisfying the demand that economy development, the authorities concerned decide to construct a YanChang transformer substation. This engineering first step design contents includes the transformer substation of electric Design. The new-et up salt a Yan
3、Chang transformer substation obtain power form Qing Jian substation (110KV) . There are two kinds of local loads in the substation,. One is 35KV,the other is 10KV. Pass the technique to compare with the economy, adopt the following scheme now: 1. There are two three-winding transformers in the subst
4、ation. Voltage grade adopt 121KV 38.5KV and 11KV. 2. For 110KV main electrical connections shall adopt inside bridge connection. 3. The 110KVenters the line 2 return, The adoption builds trolley wire. 4. For 35KV and 10KV main electrical connections employ single sectionalized bus. 5. Auxiliary power system get power form the 10KV sectionalized bus. K Key phrase:ey phrase: Change to give or get an electric shock Main transformer Current calculation Short circuit calculation The e
