110kV百河变电所的设计毕业设计论文.doc
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1、第IV页毕业设计(论文)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
2、,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AbstractThe main purpose is for 110 kv step-down substation design.Design to meet the national standards on the basis of the first on the basis of the original data to the system and all parameters and load
3、, based on the built substations and qualification of consideration and analysis of load data, make it as much as possible to meet the relevant national electric power engineering design code and local actual situation, to ensure the safety, economy and reliability requirements.The design of 110 kv,
4、 35 kv and 10 kv side in the form of the main wiring and draw the main electrical wiring diagram.And then determines the main transformer sets, capacity and model, to get the parameters of each element.And simplify the equivalent network of electric power system wiring diagram, select the short-circ
5、uit point calculation, according to the result of short circuit current calculation and maximum continuous working current, select and check the electrical equipment, distribution equipment is determined.According to the load and short circuit calculation, transformer, bus relay protection setting c
6、alculation and configuration.The lightning protection and grounding and the compensation device for the simple analysis and calculation.Ensure the power supply reliability, reduce the operation cost, reduce the risk of the accident.Key words: The design of the substation; the main electrical wiring;
7、 equipment selection; relay protection; lightning protection grounding目 录摘要IAbstractII1. 绪论11.1 变电所的作用11.1.1 变电所在电力系统中的地位11.1.2 电力系统供电要求11.1.3 电力系统的额定电压21.2 我国变电所及其设计的发展趋势21.2.1 我国变电所的发展趋势21.2.2 我国变电所设计方面的发展趋势41.3 变电所设计的要求51.4 变电所的分类62. 任务书72.1 原始资料72.1.1 负荷情况72.1.2 系统情况72.1.3 自然条件82.1.4 设计内容及要求83.
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