繼電保護(hù)代號全

1、device codes12aunit overspeed機(jī)組過速20fire in unit21impedance (distance) protection距離保護(hù)21/2n光纖縱聯(lián)距離保護(hù)21g機(jī)組最小阻抗保護(hù)24over-excitation (volts per hertz)過勵磁保護(hù)（電壓/頻率繼電器）25synch check同步檢查繼電器（同期檢測）25/79低/過電壓保護(hù)26-w變壓器繞組油溫保護(hù)26-o變壓器油溫保護(hù)27bus undervoltage母線低電壓27/59under/overvoltage relay低電壓/過電壓保護(hù)286atransformer trip

2、 circuit 1變壓器跳閘回路1286btransformer trip circuit 2變壓器跳閘回路230alarm/annunciator報警/報警器32逆功率保護(hù)32fforward power正向功率32rreverse power反向功率33control ac/dc power supplies fail控制回路電源消失38發(fā)電機(jī)軸電流保護(hù)38t1unit bearing temperature high trip軸承溫度高跳閘38t2bearing oil overtemperature 軸承油溫過高38t3bearing sump oil overtemperature

3、軸承油箱溫度高38v1nde bearing horizontal vibration high上導(dǎo)軸承水平振動高38v2nde bearing vertical vibration high上導(dǎo)軸承垂直振動高38v3de bearing horizontal vibration high下導(dǎo)軸承水平振動高38v4de bearing vertical vibration high下導(dǎo)軸承垂直振動高40under excitation失磁保護(hù)46negative sequence overcurrent負(fù)序過流48excessive starting time啟動超時486abus zone

4、protection 1母線保護(hù)1486bbus zone protection 2母線保護(hù)249thermal overload過負(fù)荷49e勵磁變過負(fù)荷49t1stator overtemperature 定子繞組過溫49t2stator hot air temperature high定子熱空氣溫度高49t3stator cold air temperature high定子冷空氣溫度高49t4cooling water temperature high冷卻水溫度高49s轉(zhuǎn)子過負(fù)荷50instantaneous over current瞬時過流保護(hù)50/27inadvertent ener

5、gisation低壓過流保護(hù)50/51/67definite time overcurrent directional方向過流保護(hù)50/51過電流保護(hù)50/51e勵磁變高壓側(cè)過電流保護(hù)50/51gnsensitive earth fault protection靈敏接地故障保護(hù)50/51ninstantaneous and inverse time earth fault瞬態(tài)和反時限接地故障保護(hù)50bfbreaker failure斷路器失靈51inverse time overcurrent反時限過流保護(hù)51vinverse time overcurrent反時限過流保護(hù)586aline t

6、rip circuit 1線路跳閘回路1586bline trip circuit 2線路跳閘回路259bus overvoltage母線過電壓59/27tn100% earth fault protection with 3rd harmonics100%定子接地保護(hù)59nstator earth fault定子接地保護(hù)59ns定子95%接地保護(hù)60flvt fuse failurept保險絲熔斷63penstock pressure low trip變壓器壓力釋放保護(hù)64g100% earth fault發(fā)電機(jī)100%定子接地64rrotor earth fault轉(zhuǎn)子接地保護(hù)64s100

7、%接地保護(hù)65lgovernor accumulator low level trip65p1governor accumulator high pressure trip65p2governor accumulator low pressure trip67directional phase overcurrent方向過流保護(hù)67gdirectional overcurrent (earth fault)方向過流保護(hù)（接地故障）67ndirectional overcurrent (earth fault)方向過流保護(hù)（接地故障）68power swing blocking振蕩閉鎖71變壓器

8、繞組油位保護(hù)71acooling water sump low冷卻水水位低71btailwater high level trip尾水水位過高跳閘74/1、74/2斷路器跳閘回路監(jiān)視78發(fā)電機(jī)異步保護(hù)79auto reclose自動重合閘81over/under frequency過/低頻率保護(hù)81hover frenquency過頻81lunder frenquency低頻85carrier relay載波繼電器（遠(yuǎn)方保護(hù)設(shè)備接口）86lock-out relay閉鎖繼電器86aunit trip a機(jī)組a相跳閘86bunit trip b機(jī)組b相跳閘86cunit trip c機(jī)組c相跳閘

9、86ttransformer lock-out relay變壓器閉鎖繼電器87differential差動保護(hù)87g發(fā)電機(jī)差動保護(hù)87t主變差動保護(hù)87tn主變中性點(diǎn)差動保護(hù)87be87lline differential relay線路差動保護(hù)87nrestricted earth fault relay限制性接地故障保護(hù)87ggenerator differential發(fā)電機(jī)差動保護(hù)87uunit differential發(fā)變組差動保護(hù)87gt發(fā)變組差動保護(hù)94auxiliary trip telay輔助跳閘繼電器95ct supervisionct監(jiān)視繼電器96變壓器重/輕瓦斯保護(hù)avr/exautomatic voltage regulator /excitation unit自動電壓調(diào)節(jié)裝置單元buchbuchholz 瓦斯繼電器flfault locating故障定位fr故障記錄fplcfea plc order tripinstrumentinstrumentation device使用設(shè)備meteringmetering unit測量單元otoil temperature油溫splcstation plc order triptcprtap changer pressure relief valve分接頭減壓閥wtwinding