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论文编号:ZD1441 论文字数:19346,页数:59 附CAD图
论文题目：庆阳地区正宁330kV变电站电气设计
摘 要
为了满足庆阳地区南部地区负荷日益增长，根据正南煤田的建设规划，满足正宁煤田产业的开发需求和矿区电厂的建设要求，同时满足向陕西供电的需要，以及增加南部电网的电源建设，使南部电网结构更加合理，提高系统运行定性和供电的可靠性，需新建一所330kV综合自动化变电站。
论文根据原始资料，设计一所330kV综自变电站。经过可靠性、经济性、灵活性的比较，确定了主接线方案，并进行了短路电流计算，从而确定设备，如变压器、断路器、隔离开关、导线、互感器及防雷设施；为变压器配置主保护及后备保护和其它相关的保护装置。此次设计的变电站具有可靠性、经济性和实用性。
关 键 词：变电站；综合自动化；设计
论文类型：设计报告
Title: Electrical Design of Qingyang Zhengning 330kV Substation
ABSTRACT
In order to meet the growing load of the southern region in Qingyang district, a new mechanized integrated 330kV substation is required to be constructed. This new substation would meet Zhengning coal mining industry’s development needs and requirements of the construction of power plant at the coalfield, on the basis of construction plan of Zhengnan coalfield. The new substation would also meet the demands of power supply to the Shaanxi Province while increasing the construction of power supply of Southern power grid therefore to make its structure more reasonable and to improve the system’s stability and reliability.
The thesis is to design a mechanized integrated 330kV substation based on the original data. To determine the main wiring program after comparisons of reliability, economy and flexibility; To determine equipments such as transformers, circuit breakers, isolating switches, wires, current transformer and lightning protection facilities, following calculations of short-circuit electrical current. To configure the main protection and back-up protection and other related protective devices for the transformers. The design of substation is provided with reliability, economy and practicality.
KEY WORDS: substation; integrated automation; Design
TYPE OF THESIS: Design Report
目 录
摘 要 I
ABSTRACT III
目 录 V
1 绪论 9
1.1 选题意义 9
1.2 变电站技术现状及发展趋向 10
1.3 论文的主要工作 11
2 正宁330kV变电站总体设计 12
2.1 正宁330kV变电站规划 12
2.2 所用电主要负荷 13
2.3 环境条件 13
3 正宁330kV变电站一次设计 15
3.1电气主接线设计 15
3.2所用电设备设计 17
3.3主要电气设备选择 18
3.3.1 主变压器的选择 18
3.3.2 330kV断路器、隔离开关、CT、PT的选择和校验 20
3.3.3 110kV断路器、隔离开关、CT、PT的选择和校验 24
3.3.4 35kV断路器、隔离开关、CT、PT及高压熔断器的选择和校验 27
3.3.5 10kV断路器的选择和校验 30
3.3.6其它设备的选择 32
3.4配电装置的布置 32
4 正宁330kV变电站二次设计 35
4.1短路电流计算 35
4.1.1短路点的选择 35
4.1.2.系统等效阻抗图 35
4.2主变压器、330kV、110kV、35kV保护配置 45
4.2.1 系统继电保护及自动装置 45
4.2.2 测控装置 47
4.3测量仪表、自动装置的规划 47
4.4所用变继电保护的规划 48
4.5绝缘配合及过电压保护 48
5 结论与展望 50
5.1结论 50
5.2展望 50
致 谢 53
参考文献 55
附录 57
