【摘 要】为满足电网对继电保护提出的可靠性、选择性、灵敏性、速动性的要求，充分发挥继电保护装置的效能，必须合理的选择保护及其的定值，以保持各保护之间的相互配合关系。做好变电站继电保护定值的整定计算工作是保证电力系统安全运行的必要条件。本文详细地讲述了如何根据 110kV 广安变电站电气主接线及基本参数，参数标幺化，进行短路电流计算，进而根据国家继电保护规程，对变压器，110kV 线路，35kV 线路配置相应保护。并通过对所配置的继电保护进行整定计算和校验，论证继电保护配置的正确性。并加装自动重合闸装置，提高供电可靠性。关键词：短路电流计算；继电保护配置；三段式电流保护【Abstract】In order to meet the needs of power network on relay protection is presented and the reliability, selectivity, sensitivity, liquid requirement, give full play to the performance of relay protection devices, must be a reasonable choice of protection setting value, in order to maintain the relations between each other. Do a good job of relay protection setting calculation is to ensure the safe operation of the power system and necessary condition.This paper describes how to analyze the selected110kV grid relay protection -- three distance protection, four section of zero sequence protection, as well as the transformer differential protection and the backup protection,35kV current protection, and the setting calculation and verification of whether or not to meet the regulations and requirements. And through a given 110kV wiring diagram and parameters, short-circuit current calculation, based on the configuration of relay protection setting calculation and checking of relay protection configuration, proved correct.Key words: Short-circuit Current Calculation; Relay Protection Configuration ; Three phase current protection;目 录1 引言................................................................11.1 本文讨论背景意义.................................
