毕业设计论文一继电保护配置与整定计算

继电保护的配置与整定计算

（系统图36）

专业：电气工程及其自动化

摘要：一个电力系统的设计必须依据电力系统的继电保护四性要求（即选择性、速动性、灵敏性及可靠性）前提下进行的，设计电力系统也必须按照继电保护中各元件的配置与整定原则，对系统中的各元件进了保护的配置和整定计算，在设计电力系统前首先要对各个元件的参数机型计算，并对发电机和变压器配置相应的电流电压互感器。其次还要在电力系统中选定短路地点，并且对各个短路电流进行简单计算，一般情况下还需要参照继电保护中以最大和最小的运行方式分别计算两种运行方式下的三相短路电流、两项短路电流、单向接地短电流等等。完成上述工作后，还必须配合电力系统的保护装置，安装保护装置就必须进行整定计算，今天我们就一发电机型号为OF-50-2的发电机为例子，根据他的类型与容量分别配置纵差保护、复压保护、定子接地等电力系统标准的保护形式。关于变压力方面我们则以SFPL1-50000为重点，当然变压器也要在电力系统中安装保护装置，我们会对其配置瓦斯。差动、过流、过负荷等保护，电力系统中必须有电力线路的存在，作为重要连接组成部分我们主要给110KV线路配置距离保护、零序保护等，作为线路传送中还必须存在三相重合闸功能。母线的保护也十分重要，主要配置完全电流差动保护。本次毕业设计的主要参数来源依赖电力系统继电保护配置及整定计算》中的方法与原则，计算出保护的动作整定值与其动作时限值。

关键词：电力系统；继电保护；短路；配置；整定

RELAY PROTECTION CONFIGURATION AND

SETTING CALCULATION

(system figure 36)

Major: Electrical Engineering and Automation

Student：limingrui Instructor: HaoChen

Abstract: the design of a power system must be based on the power system relay protection of requirements (i.e., selective, quick, sensitive and reliable) carried out under the premise, design the power system must also be in accordance with the components in the relay protection configuration and setting principle, to every component in the system into the protection configuration and setting calculation, in front of the design of power system first to model the parameters of each element calculation, and the corresponding configuration of generator and transformer current and voltage transformer. Secondly also in power system selected place short, and the short circuit current of each simple calculation, generally also need to reference in relay protection based on operation mode of the maximum and minimum are calculated under two operation modes of the three-phase short-circuit current, short-circuit current, one-way grounding short current and so on. The completion of the work, must also be combined with power system protective device, protective installations must setting calculation, today we a type of generator for OF-50-2 generator for example, according to his type and capacity are respectively arranged longitudinal differential protection, voltage protection, stator grounding power system standard forms of protection. We focus on SFPL1-50000 as a change of pressure, of course, the transformer should be installed in the power system protection devices, we will configure the gas. Differential, over current, over load protection, power system must be the existence of power line, as an important connecting part we mainly to 110kV line configuration distance protection, zero sequence protection, as a transmission line must also be three-phase reclosing function. Busbar protection is also very important, the main configuration of full current differential protection. The main parameter of this graduation project is the method and principle of the power system relay protection configuration and setting calculation.

Key words: power system; relay protection; short circuit; configuration; setting