35KV变电站继电保护设计

超级大学本科毕业(设计)论文

毕业论文

题 目: 35KV变电站继电保护设计 学 生 姓 名: 哈哈 学 号: 11111111 指 导 教 师: 哈哈

专 业 年 级: 哈哈哈哈哈哈 所 在 班 级: 完 成 日 期: 答 辩 日 期:

第 1 页 共 23 页

超级大学本科毕业(设计)论文

第 2 页 共 23 页

超级大学本科毕业(设计)论文

摘要

继电保护主要利用电力系统中元件发生短路或异常情况时的电气量(电流、电压、功率、

频率等)的变化,构成继电保护动作的原理,也有其他的物理量,如变压器油箱内故障时伴随产生的大量瓦斯和油流速度的增大或油压强度的增高。大多数情况下,不管反应哪种物理量,继电保护装置都包括测量部分(和定值调整部分)、逻辑部分、执行部分。

继电保护及自动化是研究电力系统故障和危及安全运行的异常工况,以探讨其对策的反事故自动化措施。因在其发展过程中曾主要用有触点的继电器来保护电力系统及其元件(发电机、变压器、输电线路等),使之免遭损害,所以沿称继电保护。基本任务是:当电力系统发生故障或异常工况时,在可能实现的最短时间和最小区域内,自动将故障设备从系统中切除,或发出信号由值班人员消除异常工况根源,以减轻或避免设备的损坏和对相邻地区供电的影响。

第 3 页 共 23 页

超级大学本科毕业(设计)论文

ABSTRACT

The main advantage of the power system protection devices when a short circuit or abnormal electrical quantity (current, voltage, power, frequency, etc.) changes, constitute the principle of protective actions, but also other physical quantities, such as the failure of the transformer tank With a large number of produced gas and oil flow rate of increase or hydraulic strength increased. In most cases, no matter what kind of physical reaction, protection devices include measuring part (and the constant adjustment part), the logical part, the operative part.

Relay protection and automation of power system failures and jeopardize the safe operation of the abnormal conditions to investigate the accident

countermeasures against automated measures. In its development process due to have a contact relay is mainly used to protect power systems and their components (generators, transformers, transmission lines, etc.), so from harm, so along the said protection. Basic tasks are: when the power system failure or abnormal conditions, in the shortest possible time and the smallest in the region, faulty equipment automatically removed from the system, or a signal from the duty to eliminate root causes of abnormal working conditions, to reduce or avoid equipment damage and power of the adjacent areas

第 4 页 共 23 页

联系客服:779662525#qq.com(#替换为@)