35kV变电站继电保护系统的设计与应用
发布时间：2018-11-22 19:06
【摘要】：如今,在电力系统的不断发展和电网安全稳定运行前提下,电能给国民经济和社会发展带来了巨大动力和效益。但是,电力系统在运行中,往往会由于自然或者人为因素造成电气设备发生绝缘损坏、断线、过负荷等情况,使电网进入异常运行状态。如果不能及时有效控制,就会引起电力系统震荡,供电稳定失衡,甚至使电网瓦解,并导致大面积停电,造成严重后果。为了防止事故发生,现代化智能变电站电气设备上都安装继电保护装置,电力系统继电保护是自动切除故障设备和消除异常情况的技术与装备,对电力系统的维护具有很大的意义。本论文以真实事故案例作为出发点,结合原始数据,将设备接线方式(内桥接线与单母分段接线)进行详细的研究与对比,确定适合的一次接线方案(35kV侧内桥,10kV侧单母分段);对电路进行分析,运用两种运行方式(最大运行方式、最小运行方式)计算出短路电流、设备及线路的保护定值,并进行整定计算与校验;研究分析真实事故发生的原因,进一步提高对电力系统继电保护的认识,得出电力系统继电保护的配置与定值,并对改善电力系统继电保护灵敏度提出自己的看法,进一步阐明如何保证电网安全及供电稳定。
[Abstract]:Nowadays, with the continuous development of power system and the safe and stable operation of power grid, electric energy has brought huge power and benefit to the national economy and social development. However, in the operation of electric power system, the electrical equipment will often be damaged, broken and overloaded due to natural or human factors, which makes the power network enter into abnormal operation state. If it can not be controlled in time and effectively, it will cause the power system oscillation, power supply stability imbalance, even make the power network collapse, and lead to a large area of power outages, resulting in serious consequences. In order to prevent accidents, modern intelligent substations are equipped with relay protection devices. The relay protection of power system is the technology and equipment to automatically remove the fault equipment and eliminate the abnormal situation. It is of great significance to the maintenance of power system. This paper takes the real accident case as the starting point, unifies the original data, carries on the detailed research and the contrast to the equipment wiring way (the internal bridge and the single bus segment connection), determines the suitable primary connection scheme (35kV side internal bridge), 10kV); The circuit is analyzed, and the short-circuit current, equipment and circuit protection setting are calculated by using two operation modes (maximum operation mode and minimum operation mode), and the setting calculation and verification are carried out. This paper studies and analyzes the causes of real accidents, further improves the understanding of power system relay protection, obtains the configuration and fixed value of power system relay protection, and puts forward its own views on improving the sensitivity of power system relay protection. Further expound how to ensure the security of power grid and power supply stability.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM63;TM77
本文编号：2350270
[Abstract]:Nowadays, with the continuous development of power system and the safe and stable operation of power grid, electric energy has brought huge power and benefit to the national economy and social development. However, in the operation of electric power system, the electrical equipment will often be damaged, broken and overloaded due to natural or human factors, which makes the power network enter into abnormal operation state. If it can not be controlled in time and effectively, it will cause the power system oscillation, power supply stability imbalance, even make the power network collapse, and lead to a large area of power outages, resulting in serious consequences. In order to prevent accidents, modern intelligent substations are equipped with relay protection devices. The relay protection of power system is the technology and equipment to automatically remove the fault equipment and eliminate the abnormal situation. It is of great significance to the maintenance of power system. This paper takes the real accident case as the starting point, unifies the original data, carries on the detailed research and the contrast to the equipment wiring way (the internal bridge and the single bus segment connection), determines the suitable primary connection scheme (35kV side internal bridge), 10kV); The circuit is analyzed, and the short-circuit current, equipment and circuit protection setting are calculated by using two operation modes (maximum operation mode and minimum operation mode), and the setting calculation and verification are carried out. This paper studies and analyzes the causes of real accidents, further improves the understanding of power system relay protection, obtains the configuration and fixed value of power system relay protection, and puts forward its own views on improving the sensitivity of power system relay protection. Further expound how to ensure the security of power grid and power supply stability.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM63;TM77
【参考文献】
相关期刊论文 前5条
1 赵孟;;电力系统继电保护技术现状与展望[J];电子技术与软件工程;2016年04期
2 孙莹;;电力系统继电保护技术的现状及其发展研究[J];山东工业技术;2014年13期
3 冯秀宾;;智能变电站的涵义及发展探讨[J];高压电器;2013年02期
4 修黎明;高湛军;黄德斌;唐毅;;智能变电站二次系统设计方法研究[J];电力系统保护与控制;2012年22期
5 邸荣光;刘仕兵;;光电式电流互感器技术的研究现状与发展[J];电力自动化设备;2006年08期
相关硕士学位论文 前9条
1 郭勇;220kV智能变电站继电保护配置分析与研究[D];华北电力大学(北京);2016年
2 李智;秦皇岛西区110kV智能变电站设计[D];燕山大学;2016年
3 何晓宇;35KV变电站继电保护设计与整定[D];东北石油大学;2016年
4 邹文君;110KV变电站继电保护的配置及整定计算[D];大连理工大学;2014年
5 林海锋;智能变电站的线路保护测控装置的应用设计[D];山东大学;2013年
6 冯晗;泰安地区110kV智能变电站设计[D];华北电力大学;2013年
7 舒佳;变压器微机差动保护测控装置的研究与设计[D];西安工程大学;2012年
8 顾工川;35kV数字化变电站的设计[D];南昌大学;2012年
9 赵雪菲;110kV变电站设计[D];华北电力大学;2012年
，本文编号：2350270
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