110kv百河变电所的设计本科论文 .doc

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。The 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, 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, 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-circuit 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 calculation 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; equipment selection; relay protection; lightning protection grounding 目 录 摘要 I Abstract II 1. 绪论 1 1.1 变电所的作用 1 1.1.1 变电所在电力系统中的地位 1 1.1.2 电力系统供电要求 1 1.1.3 电力系统的额定电压 2 1.2 我国变电所及其设计的发展趋势 2 1.2.1 我国变电所的发展趋势 2 1.2.2 我国变电所设计方面的发展趋势 4 1.3 变电所设计的要求 5 1.4 变电所的分类 6 2. 任务书 7 2.1 原始资料 7 2.1.1 负荷情况 7