ABBFI820F3BDH000031R1ABBFI820F3BDH000031R1ABBFI820F3BDH000031R11、变配电站继电保护的作用变配电站继电保护能够在变配电站运行过程中发生故障(三相短路、两相短路、单相接地等)和出现不正常现象时(过负荷、过电压、低电压、低周波、瓦斯、超温、控制与测量回路断线等)，迅速有选择性发出跳闸命令将故障切除或发出报警，从而减少故障造成的停电范围和电气设备的损坏程度，保证电力系统稳定运行。2、变配电站继电保护的基本工作原理变配电站继电保护是根据变配电站运行过程中发生故障时出现的电流增加、电压升高或降低、频率降低、出现瓦斯、温度升高等现象超过继电保护的整定值(给定值)或超限值后，在整定时间内，有选择的发出跳闸命令或报警信号。根据电流值来进行选择性跳闸的为反时限，电流值越大，跳闸越快。根据时间来进行选择性跳闸的称为定时限保护，定时限在故障电流超过整定值后，经过时间定值给定的时间后才出现跳闸命令。瓦斯与温度等为非电量保护。可靠系数为一个经验数据，计算继电器保护动作值时，要将计算结果再乘以可靠系数，以保证继电保护动作的准确与可靠，其范围为1.3~1.5。发生故障时的最小值与保护的动作值之比为继电保护的灵敏系数，一般为1.2~2，应根据设计规范要进行选择。3、变配电站继电保护按保护性质分类(1)发电机保护发电机保护有定子绕组相间短路，定子绕组接地，定子绕组匝间短路，发电机外部短路，对称过负荷，定子绕组过电压，励磁回路一点及两点接地，失磁故障等。出口方式为停机，解列，缩小故障影响范围和发出信号。(2)电力变压器保护电力变压器保护有绕组及其引出线相间短路，中性点直接接地侧单相短路，绕组匝间短路，外部短路引起的过电流，中性点直接接地电力网中外部接地短路引起的过电流及中性点过电压、过负荷，油面降低，变压器温度升高，油箱压力升高或冷却系统故障。(3)线路保护线路保护根据电压等级不同，电网中性点接地方式不同，输电线路以及电缆或架空线长度不同，分别有：相间短路、单相接地短路、单相接地、过负荷等。(4)母线保护发电厂和重要变电所的母线应装设专用母线保护。(5)电力电容器保护电力电容器有电容器内部故障及其引出线短路，电容器组和断路器之间连接线短路，电容器组中某一故障电容切除后引起的过电压、电容器组过电压，所连接的母线失压。(6)高压电动机保护高压电动机有定子绕组相间短路、定子绕组单相接地、定子绕组过负荷、定子绕组低电压、同步电动机失步、同步电动机失磁、同步电动机出现非同步冲击电流。3HAA1001-1233HAA1001-1243HAA1001-1253HAA1001-1263HAA1001-1273HAA1001-1293HAA1001-133HAA1001-1303HAA1001-1313HAA1001-1323HAA1001-1343HAA1001-1353HAA1001-1363HAA1001-1423HAA1001-1433HAA1001-1443HAA1001-1463HAA1001-1543HAA1001-163HAA1001-1613HAA1001-1623HAA1001-1643HAA1001-1663HAA1001-1683HAA1001-173HAA1001-1723HAA1001-1733HAA1001-1743HAA1001-1763HAA1001-1813HAA1001-1863HAA1001-1893HAA1001-1963HAA1001-1993HAA1001-2003HAA1001-2013HAA1001-2023HAA1001-2073HAA1001-213HAA1001-2183HAA1001-2303HAA1001-243HAA1001-2433HAA1001-2443HAA1001-2623HAA1001-2673HAA1001-2823HAA1001-2973HAA1001-3023HAA1001-3053HAA1001-3163HAA1001-3173HAA1001-333HAA1001-3343HAA1001-3423HAA1001-3433HAA1001-3443HAA1001-3463HAA1001-3473HAA1001-393HAA1001-5003HAA1001-5013HAA1001-5133HAA1001-5193HAA1001-5223HAA1001-5253HAA1001-5263HAA1001-5313HAA1001-5783HAA1001-6033HAA1001-6043HAA1001-6053HAA1001-6063HAA1001-6073HAA1001-6083HAA1001-6123HAA1001-6133HAA1001-6143HAA1001-6163HAA1001-6223HAA1001-6283HAA1001-6303HAA1001-6323HAA1001-6363HAA1001-6583HAA1001-6683HAA1001-6703HAA1001-6723HAA1001-6913HAA1001-6953HAA1001-7003HAA1001-7013HAA1001-713HAA1001-7163HAA1001-7183HAA1001-7193HAA1001-7213HAA1001-7273HAA1001-733HAA1001-743HAA1001-753HAA1001-763HAA1001-773HAA1001-783HAA1001-793HAA1001-813HAA1001-823HAA1001-833HAA1001-863HAA1001-883HAA1001-893HAA1001-903HAA1001-973HAA1001-983HAA2010-13HAA2021-13HAA2039-1Sleeve3HAA2043-1Nut3HAA2049-13HAA2058-133HAA2092-113HAA2092-123HAA2095-123HAA2095-133HAA2099-123HAA2103-113HAA2103-133HAA2103-143HAA2103-153HAA2103-163HAA2103-183HAA2103-273HAA2104-113HAA2107-113HAA2111-13HAA2121-33HAA2126-13HAA2128-13HAA2130-13HAA2165-203HAA2166-113HAA2166-123HAA2166-133HAA2166-163HAA2166-173HAA2166-183HAA2166-193HAA2166-203HAA2166-213HAA2166-223HAA2166-233HAA2166-243HAA2166-273HAA2166-283HAA2167-113HAA2167-123HAA2167-133HAA2167-153HAA2167-163HAA2167-173HAA2167-183HAA2167-193HAA2167-213HAA2212-13HAA2218-13HAA2242-13HAA2246-13HAA2247-13HAA2280-13HAA2281-13HAA2286-43HAA2324-13HAA2325-123HAA2325-133HAA2333-13HAA2341-13HAA2355-113HAA2356-113HAA2356-123HAA2356-143HAA2367-13HAA2388-113HAA2393-13HAA2477-13HAA2484-113HAA2495-13HAA2500-13HAA2503-13HAA2504-13HAA2589-13HAA2599-13HAA2599-23HAA2599-33HAA2600-23HAA2600-33HAA2601-13HAA2601-23HAA2601-33HAA2602-13HAA2602-23HAA2602-33HAA2613-23HAA2613-33HAA2614-23HAA2614-33HAA2659-23HAA3001-133HAA3001-143HAA3001-153HAA3001-163HAA3001-183HAA3001-193HAA3001-203HAA3001-213HAA3001-223HAA3001-493HAA3001-503HAA3001-513HAA3001-523HAA3001-533HAA3001-63HAA3001-653HAA3001-73HAA3001-983HAA3001-993HAA3003-213HAA3003-263HAA3003-283HAA3003-333HAA3003-353HAA3003-503HAA3003-523HAA3003-573HAA3003-583HAA3003-593HAA3014-13HAA3014-23HAA3015-13HAA3016-13HAA3017-83HAA3018-163HAA3101-AD3HAA3101-AE3HAA3101-CC3HAA3101-CH3HAA3201-CE3HAA3201-CG3HAA3201-CH3HAA3201-EE3HAA3560-GSA3HAA3560-HSA3HAA3560-HVA3HAA3560-HWA3HAA3560-KVA3HAA3560-LHA3HAA3560-LTA3HAA3560-LUA3HAA3560-LXA3HAA3560-MEA3HAA3560-NJA3HAA3560-NKA3HAA3560-NLA3HAA3560-NMA3HAA3560-NNA3HAA3560-NPA3HAA3560-NRA3HAA3560-NSA3HAA3560-NVA3HAA3560-PDA3HAA3563-AGA3HAA3563-ARA3HAA3563-AUA3HAA3567-AA3HAA3567-AB3HAA3567-BA3HAA3567-BB3HAA3567-FB3HAA3567-GB3HAA3567-NB3HAA3573-ABA3HAA3573-ACA3HAA3573-AJA3HAA3573-AKA3HAA3909-1013HAA3909-1033HAA3909-1043HAA3911-1023HAA7601-13HAA7601-383HAA7601-433HAA7601-503HAA7601-703HAA7601-903HAA7601-913HAC5393-23HAC17971-13HAB7211-1)