毕业论文--110kv百河变电所的设计.doc

辽宁科技大学本科生毕业设计(论文) 第I页 110kv “百河”变电所设计摘要本次主要目的是进行 110KV 降压变电所设计。设计在符合国家标准的基础之上首先依据原始资料所给系统及所有负荷的参数和线路,通过对所建变电所及出线的考虑和对负荷资料分析,使其尽可能满足国家有关电力工程的设计规范和当地实际情况,以确保安全性、经济性与可靠性的要求。本次设计了 110KV 、35KV 、 10KV 侧主接线的形式并绘制了电气主接线图。然后确定了主变压器台数、容量、及型号,以此得出了各元件的参数。并简化等效网络的电力系统接线图, 选择短路点计算, 根据短路电流计算结果和最大持续工作电流、选择并检查电气设备, 确定配电装置。根据负载和短路计算,变压器,母线继电保护整定计算和配置。本次对防雷和接地及补偿装置进行了简单的分析计算。保证了供电可靠性,降低了运行成本,减少了事故风险。关键词: 变电所设计;电气主接线;设备选择;继电保护;防雷接地辽宁科技大学本科生毕业设计(论文) 第 II页 Abstract The main purpose isfor 110 kvstep-down substation tomeet the national standards onthe basis ofthe first onthe basis ofthe original data tothe system and all parameters and load, based onthe built substations and qualification ofconsideration and analysis ofload data, make itasmuch aspossible tomeet the relevant national electric power engineering design code and local actual situation, toensure the safety, economy and reliability design of110 kv, 35kvand 10 kvside inthe form ofthe main wiring and draw the main electrical wiring then determines the main transformer sets, capacity and model, toget the parameters ofeach simplify the work ofelectric power system wiring diagram, select the short-circuit point calculation, according tothe result ofshort circuit current calculation and maximum continuous working current, select and check the electrical equipment, distribution equipment tothe load and short circuit calculation, transformer, bus relay protection setting calculation and lightning protection and grounding and pensation device for the simple analysis and the power supply reliability, reduce the operation cost, reduce the risk ofthe accident. Key words: The design ofthe substation; the main electrical wiring; equipment selection; relay protection; lightning protection grounding 辽宁科技大学本科生毕业设计(论文) 第 III页目录摘要.........................................................................................................