List of Turbine Interlock and Protection Item

KMPCL PROJECT 6×600 MW

THERMAL POWER PLANT

List of turbine interlocks and protections

印度 KMPCL6 x600 MW

燃煤电站工程

汽轮机联锁保护一览表

Nov. 2012

2012年11月

Item NO:KMPCL-COMM-TP015

印度 KMPCL6 x600 MW 燃煤电站工程汽轮机联锁保护一览表

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目录 Contents

1.编制目的

purpose 2.凝结水系统 Condensate water system 3.真空系统 Vacuum system 4.高加和低加系统 HP heater and LP heater system 5.汽动给水泵系统 Boiler turbine-feedwater pump system 6.电动给水泵系统 M-BFP system 7.汽机本体系统 Turbine cylinder proper system 8.除氧器系统 Deaerating system 9. 汽机防进水保护 Turbine Waterproof Protection 10.润滑油和顶轴油系统 Lubricating oil and jacking oil system 11.EH 油系统 EH oil system 12.密封油系统 Seal oil system 13.闭式冷却水系统 Closed cooling water system 14.开式冷却水系统 Opened cycle cooling water system 15.发电机定子冷却水系统 Generator stator winding cooling water system 16.循环水系统


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Circulating water system 17 高/低压旁路系统

HP/LP bypass system 18.主机保护部分 Turbine protection


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1．目的： Purpose 1.1 为了指导及规范系统及设备的调试工作，保证系统及设备能够安全正常投入运行，

制定本措施。 This procedure is compiled to guide and standardize the work done in system commissioning to ensure equipment and system can be put into operation in an orderly way. 1.2 检查电气、热工保护联锁和信号装置，确认其动作可靠。 Check that electric and thermal process protections, interlocks, and signal devices operate correctly. 1.3 检查设备的运行情况，检验系统的性能，发现并消除可能存在的缺陷 Inspect equipment operation, test system performance, and rectify defects that might exist. 2.凝结水系统 Condensate water system 2.1 凝结水泵 A（B）启动允许条件 Condensate pump A(B) start permit 2.1.1 凝泵入口电动阀全开 Motor-operated valve in condensate pump inlet opened 2.1.2 凝泵电机线圈度不高< 120℃（6 点） Condensate pump motor stator winding temperature not high < 120℃(6 points)

2.1.3 凝结水泵及电机轴承温度不高< 70℃ Condensate pump and motor bearing temperature not high< 70℃

2.1.4 热井水位不低 Water level of condensate hot well not L 2.1.5 凝结水泵 A 出口门全关或投备用 Motor-operated valve in condensate pump A outlet closed or in standby. 2.2 凝结水泵 A（B）保护跳闸条件 Condensate pump A(B) protection trip condition 2.2.1 本泵运行 30 秒后出口门仍关闭 The outlet is still closed after the pump is running at a period of 30s 2.2.2 凝泵入口电动阀全关 Motor-operated valve in condensate pump inlet closed 2.2.3 凝泵电机线圈度高高> 130℃（6 点） Condensate pump motor stator winding temperature high high> 130℃ (6 points)

2.2.4 凝泵推力轴承温度高高> 85℃ Condensate pump thrust bearing temperature high high > 85℃

2.2.5 热井水位低低


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Water level 1 of condensate hot well LL low low 2.2.6 凝结水泵 A 运行，凝结水流量小于 415t/h 且最小流量阀开度小于 50% Condensate pump A is running, condensate water flow <415t/h and recirculation regulating valve position<50%. 2.3 凝结水泵 A（B）自启动 Condensate pump A(B) 2.3.1 若本泵在备用，当运行泵停运或凝结水泵出口母管压力低(延时 2 秒)则保护联锁启

备用泵 If the pump is at standby status and the running pump stops or condensate pump outlet main pipe pressure low, delay 2s,interlock protection will start the standby pump 2.4 凝结水泵 A（B）出口电动门 Condensate pump A(B) outlet motorized valve 2.4.1 泵运行 5 秒联开阀门 The valve will open when pump runs 5s. 2.4.2 泵停止联关阀门 The valve will close when pump stops 2.4.3 凝结水泵投联锁联开阀门 The valve will be opened when pump interlock 2.5 凝结水输送泵 A（B） Condensate delivery pump A(B) 2.5.1 凝结水储水箱水位不低则允许启本泵 If level of condensate water tank is not low, the pump can start 2.5.2 凝结水储水箱水位低低则联锁停本泵 If level of condensate water tank is low low, interlock will stop the pump 2.5.3 若本泵在备用，当运行泵停运或凝结水输送泵出口母管压力低则保护联锁启备用泵 If the pump is at standby status and the running pump stops or pressure of condensate water header in condensate pump low, interlock protection will start the standby pump 2.6 低压缸喷水阀门自动开 (或) LP Turbine Cylinder spray water valve automatic opening（OR） 2.6.1 低压缸排汽温度大于 80℃ LP exhaust temperature > 80℃ 2.6.2 发电机负荷小于 15％ Generator load ＜15% 2.7 低压缸喷水电动门自动关（与） LP Turbine Cylinder spray water valve automatic closing（AND） 2.7.1 低压缸排汽温度均小于 65 度


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All the LP exhaust temperatures＜65℃ 2.7.2 发电机负荷大于 15％ Generator load >15% 3.真空系统 3.Vacuum system 3.1 真空泵 A（B） Vacuum pump A（B） 3.1.1 若本泵在备用方式，当运行泵停运或一台泵运行凝汽器真空低，联锁启备用泵 When the pump is at standby status, if the running pump stops or the running pump has run and pressure of condenser is high, the standby pump will start. 3.1.2 本泵在运行，汽水分离器液位低 600 秒；轴承温度＞95℃或绕组温度＞135℃，及

泵运行 120s 入口阀未开，联锁停本泵 When the pump is at running status, if steam-water separator level low over 600s, bearing temperature more than 95℃ or motor stator winding temperature more than135℃,and Vacuum pump inlet valve not opened while running more than 120s, the pump will trip. 3.1.3 启动允许条件：电机线圈及轴承温度正常;真空泵入口蝶阀已关;且汽水分离器液位

不低。 Start permit: vacuum pump inlet butterfly valve closed; motor stator winding temperature and bearing temperature is normal ; steam-water separator level not low . 3.2 真空泵 A（B）入口蝶阀 Pneumatic butterfly valve of vacuum pump A（B） inlet 3.2.1 泵运行后入口气动阀前后差压高，联开；泵停联关 When pump is running, if inlet pneumatic valve front and rear differential pressure high, the valve will be opened; if the pump stops, the valve will be closed 3.3 真空泵 A（B）补水电磁阀 Vacuum pump A(B) makeup water solenoid valve 3.3.1 汽水分离器液位低，联开；汽水分离器液位高高，联关 If the steam and water separator level low, the valve will be opened; if the level high, Vacuum

pump A stopped with 5 seconds delay，the valve will be closed

3.4 真空破坏阀开允许 Vacuum broken valve Open permit 汽机跳闸、发电机跳闸 OPC 动作且汽机转速＜2000rpm Turbine trip or Gen trip or OPC active and turbine speed＜2000rpm 4.高加和低加系统 HP heater and LP heater system 4.1 高加保护


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High pressure heater protection 4.1.1 高加水位高 3 值，关对应段抽汽电动门、逆止门，开疏水阀，关高加进、出口门 If high pressure heater water level high at value 3, stage extraction steam motorized valve and check valve will be closed, high pressure heater drain water valve will be opened, high pressure heater inlet and outlet motorized valve will be closed 4.1.2 高加水位高 2 值，开对应的高加事故疏水阀 If high pressure water level high at value 2, high pressure emergency drain water valve will be open 4.1.3 手动紧急解列，关对应抽汽电动门、逆止门，关高加进、出口电动门 manual urgency output is installed for high pressure heater, which can close, extraction steam motorized valve and check valve, close high pressure heater inlet and outlet motorized valve. 4.2 1、2、3 抽电动门 1、2、3 Extraction steam motorized valve 4.2.1 当高加紧急解列、汽机跳闸、发电机跳闸、对应高加水位高 3 值时，以上任一条

件满足联锁关本阀门 High pressure heater urgency stepout, turbine trips，generator trip and high pressure water level high at value 3, if any condition of which is met, the valve will be closed 4.2.2 允许开条件：高加水位不高 I 值且高加进、出口电动门开且旁路门关 Open permit: HP heater level not H and high pressure heater inlet and outlet motorized valve

opened and bypass valve closed

4.3 1、2、3 抽逆止门 1、2、3 Extraction steam check valve 4.3.1 允许开条件：无联锁关条件 Open permit: no interlock condition 4.3.2 当高加紧急解列、汽机跳闸、OPC 动作，抽汽阀关闭，任一高加水位高 3 值时，

以上任一条件满足联锁关本阀门 High pressure heater urgency stepout, turbine trips，extraction MOV closed DEH OPC action and high pressure water level high at value 3, if any condition of which is met, the valve will be closed 4.41、2、3 抽疏水阀 1、2、3 extraction steam drain valve 4.4.1 汽机跳闸、对应抽汽电动门关闭、高加紧急解列、OPC 动作，机组负荷 <12%，

以上任一条件满足联锁开本阀门 If turbine trips, extraction steam motorized valve is closed,DEH OPC action high pressure heater water level high at value 3 or unit load<12%,any condition of which occurs, the valve will be opened


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4.4.2 机组负荷>10%且无联锁开条件，联锁关本阀门 If unit load>10% and no interlock open condition, the valve will be closed 4.5 高加进、出口电动门 HP heater outlet motor-operated，inlet motor-operated valve 4.5.1 高加紧急解列或任一高加水位高 3 值，保护联锁关本阀门 If high pressure heater urgency stepout or any high pressure heater water level high at value 3, interlock protection will close outlet motor-operated and inlet motor-operated valve 4.5.2 开允许条件：无联锁关条件 Open permit: no interlock close condition 4.5.3 关允许条件：旁路阀开 Close permit: bypass MOV opened 4.6 高加旁路阀 HP heater bypass motor-operated valve 4.6.1 高加紧急解列或任一高加水位高 3 值，保护联锁开本阀门 If high pressure heater urgency stepout or any high pressure heater water level high at value 3, interlock protection will open the valve 4.6.2 关允许条件：高加进出口电动闸阀全开 Close permit: HP heater inlet MOV and outlet MOV opened 4.7 1、2、3 号高加危急疏水气动阀 1、2、3 HP heater emergency drain pneumatic operated valve 4.7.1 对应高加水位高 2 值时联锁开本阀门 If high pressure heater water level high at value 2, interlock will open the valve 4.8 低加保护 Low pressure heater protection 4.8.1 低加水位高 3 值，关对应段抽汽电动门、逆止门 If low pressure heater water level high at value 3, stage extraction steam motorized valve and check valve will be closed 4.8.2 低加水位高 2 值，开对应的低加事故疏水阀 If low pressure heater water level high at value 2, the low pressure heater drain valve will be opened 4.9 5、6 抽电动门 5、6 steam extraction piping motor-operated valve 4.9.1 当汽机跳闸,发电机跳闸或对应低加水位高 3 值,进水阀关，出水阀关，联锁关本阀

门 When turbine trips or the low pressure heater water level high at value 3 or water inlet MOV

closed or water outlet MOV closed,, the valve will be closed


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4.9.2 允许开条件：低加水位不高 I 值且低加进、出口电动门开且旁路门关 Open permit: LP heater level not H and low pressure heater inlet and outlet motorized valve

opened and bypass valve closed

4.10 5、6 抽逆止门 5、6 steam extraction piping NRV 4.10.1 当汽机跳闸,发电机跳闸，或对应低加水位高 3 值,抽汽阀关或 OPC 动作时，联锁

关本阀门 When turbine trip ，generator trip ，extraction MOV closed or the low pressure heater water level high at value 3 or OPC act, the valve will be closed 4.11 5、6 抽疏水阀 5、6 steam extraction piping pneumatic operated drain valve 4.11.1 汽机跳闸、对应抽汽电动门关闭、对应低加水位高 2 值、机组负荷 <22%，以上

任一条件满足联锁开本阀门 If turbine trips, extraction steam motorized valve is closed, low pressure water level high at value 2 or unit load<22%, any condition of which occurs, the valve will be opened 4.11.2 机组负荷>20%且无联锁开条件，联锁关本阀门 If unit load>20% and no interlock open condition, the valve will be closed 4.12 5、6、7、8 号低加入口电动阀 5、6、7、8 LP heater inlet motor-operated valve 4.12.1 关允许条件：对应低加电动旁路阀全开 Close permit: relevant LP heater bypass MOV opened 4.12.2 自动关, LPH 水位高 III，并且旁路阀没有关延时 3 秒 Auto close condition: LPH water level high III and water bypass MOV not closed with 3 seconds delay 4.13 5、6、7、8 号低加出口电动阀 5、6、7、8 LP heater outlet motor-operated valve 4.13.1 关允许条件：对应低加电动旁路阀全开 Close permit: relevant LP heater bypass MOV opened 4.13.2 自动关, LPH 水位高 III，并且旁路阀没有关延时 3 秒 Auto close condition: LPH water level high III and water bypass MOV not closed with 3 seconds delay 4.14 5、6、7、8 号低加电动旁路阀 5、6、7、8 LP heater bypass motor-operated valve 4.14.1 关允许条件：对应低加入口与出口电动阀全开 Close permit: relevant LP heater inlet and outlet motor-operated valve opened 4.14.2 自动开：LPH 水位高 III，进口门关，或出口门关 Auto open condition: LPH water level high III , inlet MOV closed or outlet MOV closed.


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4.15 5、6、7、8 号低加危急疏水气动调节阀 5、6、7、8 LP heater emergency drain pneumatic operated valve 4.15.1 自动开：对应低加水位高 II 值 Auto open condition: relevant LP heater level high II 5.0 汽动给水泵系统 Boiler turbine-feedwater pump system 5.1 汽泵 A（B）前置泵启动允许条件 T-BFBP A(B) start permit 5.1.1 汽动给水泵最小流量再循环阀全开 T-BFP minimum flow amount recirculation valve fully opened 5.1.2 除氧器液位不低值 Deaerator level not lower than II set point 5.1.3 汽动给水泵前置泵入口电动门开 T-BFBP inlet motorized valve fully opened 5.1.4 汽动给水泵前置泵驱动端径向轴承温度不高 T-BFP driven end radial bearing temperature not high 5.1.5 汽动给水泵前置泵自由端径向轴承温度不高 T-BFP free end radial bearing temperature not high 5.1.6 汽泵前置泵电机传动端径向轴承温度不高 Temperature of T-BFBP motor driving end radial bearing not high 5.1.7 汽泵前置泵电机自由端径向轴承温度不高 Temperature of T-BFBP motor free end radial bearing not high 5.1.8 无电气跳、无禁操、无联锁跳闸条件、不在就地控制 No electrical trip, no inhibited operation, no interlock trip condition, not at local control mode 5.2 汽泵 A（B）前置泵保护联锁跳闸条件 T-BFBP A(B) interlock protection trip condition 5.2.1 汽动给水泵前置泵入口电动门关 T-BFBP inlet valve is closed

5.2.2 汽泵前置泵出口给水流量 LL 且阀反馈<60%，延时 8 秒 T-BFBP outlet water flow amount low low and recirculation valve regulating valve position<60%, delay 8s 5.2.3 除氧器水位低低 Deaerator water level low low 5.2.4 汽泵前置泵轴承温度高高； T-BFBP bearing temperature high high 5.2.5 汽泵前置泵电机轴承温度高高 T-BFBP motor bearing temperature high high


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5.3 汽动给水泵保护跳闸条件（或） Boiler turbine-feedwater pump auto trip（OR） 5.3.1 主泵入口压力 LL，延时 30s Main pump inlet water pressure is LL，delay 30s 5.3.2 给水泵径向轴承温度高高（90ºC） Main pump radial bearing temperature HH（90ºC） 5.3.3 给水泵推力轴承温度高高（95ºC） Main pump thrust bearing temperature HH（95ºC） 5.3.4 汽泵运行入口流量小于 138t/h，且再循环门阀位<60%，延时 8s Main pump is running and inlet water flux＜138t/h, and BFP turbine recycle control valve

position<60% ,delay 8s 5.3.5 汽泵前置泵停 BFBP stop 5.3.6 除氧器水位低低 Deaerator water level is LL 5.4 小汽机跳闸条件(或) BFP turbine trip（OR） 5.4.1 润滑油压力低低（0.08MPa） Lube oil pressure is LL（0.08MPa） 5.4.2 轴向位移大（＞+0.6mm/＜-1.0mm） Shaft displacement （＞+0.6mm/＜-1.0mm） 5.4.3 排汽压力＞-41.7KPa Exhaust steam pressure＞-41.7KPa 5.4.4 转速超过 5478r/min speed＞5478r/min 5.4.5 给水泵故障跳闸 Boiler turbine-feedwater pump trip 5.4.6 轴振＞0.120mm Shaft vibration＞0.120mm 5.4.7 调节保安油压低低 EH oil pressure is LL 5.4.8 小机推力瓦温高 BFPT thrust bearing temperature is H 5.4 9 小机轴承温度高 BFPT bearing temperature is H 5.5 给水泵汽机 A(B)润滑油泵


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BFPT A(B) lube oil pump 5.5.1 本泵在备用，当运行泵停运或给水泵汽机润滑油油压低，保护联锁启备用泵 Pump is at standby mode, when running pump stops or BFPT lube oil pressure low, interlock protection will start standby pump 5.6 给水泵汽机 A（B）直流事故油泵 BFPT A(B) emergency oil pump 5.6.1 联锁投入时，当小机润滑油泵全停或给水泵汽机润滑油油压低或联锁启的润滑油泵

启故障，保护联锁启本泵 When interlock is input and all BFPT lube oil pumps stop or BFPT lube oil pressure low or interlocked lube oil pump start fault, interlock protection will start the pump 5.7 给水泵汽机 A（B）油箱排烟风机 BFPT A(B) oil tank exhaust fan 5.7.1 本风机在备用，当运行风机停运时，保护联锁启备用风机 Fan is at standby mode, when running fan stop, interlock protection will start standby fan 5.8 A（B）小机中压进汽口疏水阀 BFPT A(B) IP steam inlet drain valve 5.8.1 联锁投入时小机跳闸或负荷小于 15%，联开 When interlock is input and BFPT trips or load is lower than 15%, interlock opens the valve 5.8.2 联锁投入时负荷大于 15%，联关 When interlock is input and load is higher than 15%, interlock closes the valve 5.9 A（B）小机轴封供汽疏水阀/ A（B）小机轴封漏汽疏水阀 BFPT A(B) shaft seal supply drain valve/ BFPT A(B) shaft seal leakage drain valve 5.9.1 联锁投入时小机跳闸或负荷小于 15%，联开 When interlock is input and BFPT trips or load is lower than 15%, interlock opens the valve 5.9.2 联锁投入时负荷大于 15%，联关 When interlock is input and load is higher than 15%, interlock closes the valve 5.10 再热冷段至 A（B）小机进汽电动闸 Motor-operated valve from cold RH to BFPT A(B) 5.10.1 汽机未跳闸则允许开本阀门 If turbine have not tripped, the valve can open 5.10.2 汽机跳闸或汽泵 A 跳闸，联关本阀门 When turbine tripped or BFPT tripped, interlock closes the valve 5.11 汽动给水泵前置泵 A（B）入口电动门 T-BFBP A(B) inlet motorized valve 5.11.1 前置泵 A(B)停止，允许关本阀门 When T-BFBP A(B) is stopped, permission close the valve


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5.12 汽动给水泵 A（B）出口电动门 T-BFP A(B) outlet motorized valve 5.12.1 汽动给水泵停止，可手动开/关本阀门 When T-BFP is stopped, the valve can be manually opened/closed 5.12.2 汽泵停止，联关此门 When T-BFP is stopped, interlock will close the valve 6.0 电动给水泵系统 6.0 M-BFP system 6.1 电动给水泵启动允许条件 M-BFP start permit 6.1.1 勺管调节位置<5%； M-BFP hydraulic coupler scoop tube set point<5% 6.1.2 电动给水泵最小流量再循环阀全开； M-BFP minimum flow recirculation valve fully opened 6.1.3偶合器润滑油压力高； hydraulic coupler header lubricating pressure H 6.1.4 电泵前置泵入口电动闸阀全开； M-BFBP inlet motor-operated valve fully opened 6.1.5电泵无反转； M-BFP no speed reverse 6.1.6 除氧器液位不低值； Deaerator level not L 6.1.7 电泵前置泵轴承温度不高（3 点）； M-BFBP bearing temperature not high (3 points) 6.1.8电动给水泵电机绕组温度不高（6 点）； M-BFP electric motor winding temperature not high (6 points) 6.1.9电动给水泵及电机轴承温度不高（6 点）； M-BFP and electric motor bearing temperature not high (6 points) 6.1.10电动给水泵液力偶合器轴承温度不高（10 点）； Temperature of M-BFP hydraulic coupler bearing not high (10 points) 6.1.11电动给水泵润滑油冷油器进油和出油温度不高； M-BFP lube oil cooler inlet and outlet oil temperature not high 6.1.12 电动给水泵出口门关或投联锁； Motor-operated valve in M-BFP outlet closed or in interlock 6.2 电动给水泵保护联锁跳闸条件 M-BFP interlock protection trip condition 6.2.1 电泵前置泵及电机轴承温度高高（5 点）； M-BFBP and electric motor bearing temperature high high (5 points)


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6.2.2 电动给水泵电机绕组温度高高（6 点）； M-BFP electric motor winding temperature high high (6 points) 6.2.3 电动给水泵轴承温度高高（4 点）； M-BFP bearing temperature high high (4 points) 6.2.4 电动给水泵液力偶合器轴承温度高高（10 点）； Temperature of M-BFP hydraulic coupler bearing high high (10 points) 6.2.5电动给水泵工作油冷油器进油温度高高； M-BFP working oil cooler inlet oil temperature high high 6.2.6 电动给水泵工作油冷油器出油温度高高； M-BFP working oil cooler outlet oil temperature high high 6.2.7 电动给水泵润滑油冷油器进油温度高高； M-BFP lube oil cooler inlet oil temperature high high 6.2.8 电动给水泵润滑油冷油器出油温度高高； M-BFP lube oil cooler outlet oil temperature high high 6.2.9 电动给水泵机械密封循环液温度高高； M-BFP mech,seal Circulating liquid temperature high high 6.2.10 电泵前置泵入口门关； M-BFBP inlet valve closed 6.2.11 电泵液力耦合器润滑油压力低低； M-BFP hydraulic coupler header lubricating pressure LL 6.2.12 电泵运行 30 秒后电动给水泵入口压力(LL)，延时 5 秒； M-BFP inlet pressure low low when M-BFP is running at a period of 30s, delay 5s 6.2.13电泵运行，前置泵出口给水流量低低，且电动给水泵最小流量再循环阀阀位<60%，

延时8 秒； When M-BFP is running,M-BFBP outlet feed water flow low low and M-BFP minimum flow recirculation valve position<60%, delay 8s 6.2.14 除氧器水位低低； Deaerator level low low 6.3 电动给水泵联启 M-BFP 6.3.1联锁投入时当任一汽泵跳闸，联锁启备用电动给水泵； When interlock is input and any T-BFP trips, interlock will start M-BFP 6.4 电动给水泵辅助油泵 M-BFP auxiliary oil pump 6.4.1联锁投入时下列条件之一可联锁启辅助油泵： Interlock will start the auxiliary oil pump when interlock is input and any of below conditions occurs: 6.4.1.1 电动给水泵偶合器润滑油压力<0.15Mpa； M-BFP hydraulic coupler header lube oil pressure<0.15Mpa 6.4.1.2 电泵停运。


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M-BFP stops 6.4.2联锁投入时，电泵运行且电动给水泵偶合器润滑油压力>0.22Mpa(延时30s)，联锁停

辅助油泵： Interlock will stop the auxiliary oil pump when M-BFP is running and M-BFP hydraulic coupler header lube oil pressure>0.22Mpa（delay 30s） 6.5 电动给水泵前置泵入口电动门 M-BFP inlet motorized valve 6.5.1 电动给水泵在停止状态下，允许关本阀门。 when M-BFP is at stopping status, the vavle can be closed 6.5.2 电泵投联锁联开本阀门 Interlock will open the vavle when M-BFP in interlock 6.6 电动给水泵出口电动门 M-BFP outlet motorized valve 6.6.1 电泵停转，联关此门。 When M-BFP stops, interlock will close the valve 6.6.2 电泵投联锁且无反转信号时联开本阀门 Interlock will open the vavle when M-BFP in interlock and no speed reverse 7.0 汽轮机本体相关系统 Turbine cylinder proper system 7.1 当负荷>22%(3 秒脉冲)时，联关以下阀门 If load>22%（3-second pulse）, these valve auto close 7.1.1 汽封供汽管道疏水阀 Drain valve of main shaft sealing supply pipe 7.1.2 汽封供汽母管低温段疏水阀 Drain valve of LP shaft sealing steam pipe 7.1.3 汽封回汽管道疏水阀 Drain valve of shaft sealing steam leakage pipe 7.1 当负荷＜20%(3 秒脉冲)时，联开以下阀门 If load＜20%（3-second pulse）, these valve auto open 7.2.1 汽封供汽管道疏水阀 Drain valve of main shaft sealing supply pipe 7.2.2 汽封供汽母管低温段疏水阀 Drain valve of LP shaft sealing steam pipe 7.2.3 汽封回汽管道疏水阀 Drain valve of shaft sealing steam leakage pipe 7.3 高排逆止门自动关（或）/ HP casing exhaust check valve automatic closing (OR) 7.3.1 汽机跳闸(3 秒脉冲)


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Turbine trip (3-second pulse) 7.3.2 OPC 动作(3 秒脉冲) Operation of OPC (3-second pulse) 7.4 高排逆止门自动开 HP casing exhaust check valve automatic opening 7.4.1 汽机挂闸 Turbine reset. 7.4.2 OPC 复位延时 3 秒 OPC reset delay 3 second. 7.5 轴封风机自动启 Gland seal fan automatic start 7.5.1 另一台轴封风机停止(3 秒脉冲)且轴封风机在备用模式 Gland seal fan stopped (3-second pulse) and another is in standby position 7.5.2 另一台轴封风机运行且轴封加热器压力高（延时 3 秒）(在备用模式) Another Gland seal fan is running and gland seal steam heater pressure is H（delay 3s）(Gland seal fan is in standby position) 7.6 BDV 阀 BDV valve 7.6.1 汽机挂闸，联关 Turbine reset ,auto close 7.6.2 汽机跳闸，联开 Turbine trip, auto open 8.0 除氧器系统 Deaerator system 8.1 除氧器保护 Deaerator protection 8.1.1 除氧器水位高 3 值，关 4 抽至除氧器电动门，开除氧器水箱电动溢水阀 If deaerator water level high at value 3, 4 extraction to deaerator motorized valve will be closed, deaerator water tank overflow motor-operated valve will be opened. 8.1.2 除氧器水位高 2 值，开除氧器水箱电动溢水阀,除氧器水位正常关阀 If deaerator water level high at value 2, deaerator water tank overflow motor-operated valve 1 will be opened.If deaerator water level is normal,close the valve. 8.1.3 除氧器水位低 2 值，保护联锁停汽泵 A、B 前置泵、电泵 If deaerator water level low at value 2, interlock protection will stop T-BFP A、B and M-BFP 8.2 四抽管道电动闸阀 NO.4 steam extraction piping motor-operated valve


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8.2.1 当汽机跳闸，除氧器水位高高时，联锁关本阀门 When turbine trips or deaerator water leve high, the valve will be closed 8.2.2 允许开条件：无联锁关条件 Open permit: no interlock close condition 8.3 四抽管道气动逆止阀 NO.4 steam extraction piping pneumatic operated NRV 8.3.1 当汽机跳闸,发电机跳闸，OPC 动作，抽汽电动门关，联锁关本阀门 When turbine trips, generator trip,DEH OPC action,#4 extraction steam MOV closed ,the valve will be closed 8.3.2 允许开条件：无联锁关条件 Open permit: no interlock close condition 8.4 四抽管道气动疏水阀 NO.4 steam extraction piping pneumatic operated drain valve 8.4.1 汽机跳闸、4 抽电动门关闭、机组负荷 <20%，以上任一条件满足联锁开本阀门 If turbine trips, 4-stage extraction steam pipe 1 motorized valve is closed, or unit load<20%, any condition of which occurs, the valve will be opened 8.4.2 机组负荷>22%且无联锁开条件，联锁关本阀门 If unit load>22% and no interlock open condition, the valve will be closed 8.5 四抽至除氧器电动闸阀 NO.4 steam extraction piping to deaerator motor-operated valve 8.5.1 当汽机跳闸或除氧器水位高 3 值或 4 抽 1 电动门关闭或除氧器压力高时，联锁关

本阀门 If turbine trips or deaerator water level high at value 3 or 4-stage extraction steam pipe 1 motorized valve is closed or deaerator pressure high, the valve will be closed 8.5.2 允许开条件：无汽机跳闸、 4 抽电动门全开、除氧器水位不高 1 值、四级抽汽压

力 > Mpa、四段抽汽至除氧器管道电动门前压力> Mpa Open permit: no turbinetrips，NO.4 steam extraction piping motor-operated valve opened , deaerator water level not high, NO.4 steam extraction pressure> Mpa and NO.4 steam extraction to deaerator pressure> Mpa. 8.6 除氧器水箱电动溢水阀 Deaerator water tank overflow motor-operated valve 8.6.1 除氧器水位高 2 值或高 3 值，联开 If deaerator water level high at value 2 or value 3, the valve will be opened 8.6.2 除氧器水位不高 1 值且不高 2 值，联关 If deaerator water level not high at value 1 and value 1, the valve will be closed 8.7 四抽至 A（B）小机电动闸阀


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NO.4 steam extraction piping to BFPT A(B) motor-operated valve 8.7.1 当小机跳闸或汽机跳闸，联锁关本阀门 If BFPT trips or turbine trips, the valve will be closed 8.8 四抽至 A（B）小机气动疏水阀 NO.4 steam extraction piping to BFPT A(B) pneumatic operated drain valve 8.8.1 四抽至 A 小机电动闸阀关，联锁开本阀门 NO.4 steam extraction piping to BFPT A MOV, the valve will be opened 8.8.2 四抽至 A 小机电动闸阀开且 A 小机负荷>20%，联锁关本阀门 NO.4 steam extraction piping to BFPT A MOV opened and BFPT A load>20%, the valve will be closed 9. 汽机防进水保护 Turbine Waterproof Protection 9.1 汽机防进水疏水阀 Turbine Waterproof drain valve 9.1.1 高旁阀 1 前管道疏水气动阀 1 Upstream HP bypass valve1 drain valve1 9.1.2 高旁阀 2 前管道疏水气动阀 2 Upstream HP bypass valve2 drain valve2 9.1.3 主蒸汽管道 1(启动排汽)疏水气动阀 Pneumatic valve 1 of drainage of left mian steam piping before msv 9.1.4 主蒸汽管道 2(启动排汽)疏水气动阀 Pneumatic valve 2 of drainage of left mian steam piping before msv 9.1.5 再热热段管道疏水气动阀 Pneumatic valve of drainage of reheat steam main piping 9.1.6 再热热段管道疏水气动阀 1 Pneumatic valve 1 of drainage of reheat steam piping 9.1.7 再热热段管道疏水气动阀 2； Pneumatic valve 2 of drainage of reheat steam piping 9.1.8 再热冷段管道疏水气动阀 1 Pneumatic valve of drainage of cold reheat piping before check valve 9.1.9 再热冷段管道疏水气动阀 2 Pneumatic valve of drainage of cold reheat piping after check valve 9.1.10 左侧再热器进口疏水阀 Left reheater inlet drain valve 9.1.11 右侧再热器进口疏水阀 Right reheater inlet drain valve


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9.1.12 高压内缸疏水气动阀 Pneumatic valve of HP inner casing drain 9.1.13 中压联合汽阀阀壳及中压进汽腔室疏水气动阀 Pneumatic valve of reheat stop valve shell drain 9.2 防进水保护控制的策略 Control principle of waterproof protection 9.2.1 汽机跳闸或负荷〈10%MCR，自动打开全部疏水阀 If turbine tripped or load<10%MCR, all drain water valves will be opened 9.2.2 负荷>12%MCR，且无自动开条件，自动关闭全部疏水阀 If load〉 12%MCR and no auto-open conditions, drain water valves will be opened automatically 10.0 润滑油和顶轴油系统 lubricating oil and jacking oil system 10.1 汽机交流润滑油泵 Turbine AC lube oil pump 10.1.1 若本泵在备用方式，汽机跳闸或转速小于 2900rpm 或主油泵出口油压低或润滑油

压低，联锁启本油泵 When the pump is at standby status, if turbine trip or speed≤2900rpm or pressure low of main oil pump discharge outlet or lube oil pressure is low, the oil pump will start 10.1.2 停允许：润滑油压不低且转速大于 2850rpm Stop permissive condition：lube oil pressure is normal or speed>1850 rpm.

10.2 汽机直流事故油泵 Turbine DC emergency oil pump 10.2.1 若本泵在备用方式，汽机交流润滑油泵停运且主油泵出口油压低、汽机交流润滑

油泵启故障、润滑油压低，以上任一条件满足联锁启本油泵 When the pump is at standby status, if turbine AC lube oil pump stops and pressure low of main oil pump discharge outlet , turbine AC lube oil pump starting fails or lube oil pressure is low, DC oil pump will start 10.1.2 停允许：润滑油压不低且转速大于 2850rpm Stop permissive condition：lube oil pressure is normal or speed>2850 rpm.

10.3 汽机顶轴油泵交流 A/B（直流 C） Turbine jacking oil pump A/B (C) 10.3.1 若本泵在备用方式，当运行泵停运或汽轮机转速≤2500rpm 或运行泵出口压力低，

则保护联锁启本油泵； When the pump is at standby status, if running pump stops or turbine speed≤2500rpm or running pump outlet pressure low, interlock protection will start the oil pump


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10.3.2 当顶轴油泵入口油压低低或汽机转速>2500r/min 延时 10 秒，则联锁停本油泵 If Jacking oil pump inlet oil pressure is low or turbine speed>2500r/min on delay 10 seconds，the oil pump will stop 10.3.3 启允许条件：本油泵入口压力不低 Start permit: the oil pump inlet pressure not low 10.4 汽机润滑油箱排烟风机 A（B） Turbine lube oil tank exhaust fan A（B） 10.4.1 若本风机在备用方式，当运行风机停运，则联锁启本风机 When the fan is at standby status, if the running fan stops, the standby fan will start. 10.5 汽机润滑油箱加热器 Turbine lube oil tank heater 10.5.1 启动条件：润滑油箱油位不低 Start permissive condition：Turbine lube oil tank level not low.

10.5.2 自动启动条件:润滑油箱油温低

Auto start condition :Turbine lube oil temperature low

10.5.3 自动停条件：润滑油箱油位低低延时 2 秒或润滑油箱油温不低延时 3 秒;或加热器

表面温度高高。 Auto stop condition :Turbine lube oil tank level low low or Turbine lube oil temperature not

low with 10 seconds delay. or heater surface temperature HH. 10.6 汽机启动油泵 Turbine start-up oil pump 10.6.1 若本泵在备用方式，汽机跳闸或转速小于 2900rpm，联锁启本油泵 When the pump is at standby status, if turbine trip or speed≤2900rpm, the oil pump will start 10.6.2 停允许：润滑油压不低且转速大于 2850rpm Stop permissive condition：lube oil pressure is normal or speed>2850 rpm.

11.EH 油系统 EH oil system 11.1 EH 油泵联锁保护 EH oil pump interlock 11.1 .1 EH 油箱油温低于 20℃时，油箱油位低低，EH 油泵禁止启动 EH oil temperature less than 20℃, or oil level LL ,forbid start EH oil pump 11.1.2 EH 油母管压力低至 9.2MPa 报警，并且联动备用 EH 油泵 EH oil pressure less than 9.2MPa, another EH oil pump auto start (in standby position) 11.1.3 运行 EH 油泵停止运行，备用油泵自动启动 One EH oil pump stop, another EH oil pump auto start (in standby position) 11.1.4 EH 油箱油位低低且低 ,延时 2 秒联跳 EH 油泵


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EH oil tank oil level is LL and L, auto stop EH oil pump 11.2 EH 油循环泵联锁 EH oil circulating pump interlock 11.2.1 EH 油箱油位低低且低 ,联跳 EH 循环油泵 EH oil tank oil level LL and L, auto stop EH oil circulating pump 11.2.2 一台 EH 油循环泵跳闸，联启备用 EH 油循环泵 One EH oil circulating pump trip , another EH oil circulating pump auto start. 12.0 密封油系统 Seal oil system 12.1 主密封油泵 A（B） Main Seal Oil Pump A（B） 12.1.1 若本泵在备用方式，当运行泵停运或主密封油泵进出口差压低或油氢差压低

<35kpa，则保护联锁启本油泵 When the pump is at standby status, if running pump stops or inlet/outlet diff pressure low of main seal oil pump or oil-hydrogen diff pressure low, interlock protection will start the oil pump 12.2 事故用密封油泵 Emergency Seal Oil Pump 12.2.1 若本泵在备用方式，当主密封油泵 A 和 B 停运或主密封油泵联锁启故障或主密

封油泵进出口差压低，则保护联锁启本油泵 When the pump is at standby status, if Main Seal Oil Pump A and B stopped or Main Seal Oil Pump start fault when interlocked or inlet/outlet diff Pressure Low of Main Seal Oil Pump, interlock protection will start the oil pump. 12.3 密封油排烟风机 A（B） Sealing Oil Smoke Extractor Exhaust Fan A（B） 12.3.1 若本风机在备用方式，当运行风机停运，则保护联锁启本风机 When the fan is at standby status, if running fan stopped, interlock protection will start the fan 13.闭式冷却水系统 Closed cooling water system 13.1 闭式循环冷却水泵#1（2）启动允许条件 Closed circulation cooling water pump #1(2) start permit 13.1.1 闭式循环冷却水膨胀水箱水位正常 Closed circulation cooling water expansion tank water level is normal. 13.1.2 闭式循环冷却水泵入口门已开 The inlet valve of closed circulation cooling water pump is open. 13.1.3 闭式循环冷却水泵出口门关或泵在备用


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The outlet valve of closed circulation cooling water pump is close or the pump is in standby. 13.1.4 无电气跳、无联锁跳、无禁操、不在就地控制 Not electrical trip, no interlock trip, no inhibited operation, not at local control mode 13.2 闭式循环冷却水泵#1（2）保护跳闸条件 Closed circulation cooling water pump #1(2) protection trip condition 13.2.1 本泵运行 15 秒后出口门仍关闭 The outlet valve is still closed after the pump is running at a period of 15s 13.2.2 闭式循环冷却水膨胀水箱水位低低 Closed circulation cooling water expansion tank water level low low 13.3 闭式循环冷却水泵#1（2） Closed circulation cooling water pump #1(2) 若本泵在备用，当运行泵停运或出口母管压力低则保护联锁启备用泵 If the pump is at standby status and the running pump stops or outlet main pipe pressure low, interlock protection will start the standby pump 13.4 闭式循环冷却水泵#1（2）出口电动门 Closed circulation cooling water pump #1(2) outlet motor-driven gate valve 13.4.1 泵运行联开阀门 Interlock will open the valve when pump is running 13.4.2 泵停止联关阀门 Interlock will close the valve when pump stops 14.开式冷却水系统 Opened cycle cooling water system 14.1 电动滤网旁路电动门关允许 The motorized filter bypass motorized valve close permission. 14.1.1 电动滤网入口和出口电动门开 The motorized filter inlet and outlet motorized valve open. 14.2 电动滤网入口电动门关允许 Closed conditions for the motorized filter inlet motorized valve. 14.2.1 电动滤网旁路电动门开状态 The motorized filter bypass motorized valve is opened. 14.3 电动滤网出口电动门关允许 Closed conditions for the motorized filter outlet motorized valve. 14.3.1 电动滤网旁路电动门开状态 The motorized filter bypass motorized valve is opened. 14.4 电动滤网出口电动门自动开 The motorized filter outlet motorized valve auto open.


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14.4.1 电动滤网启动 The motorized filter start up 14.5 开式冷却水泵自动启动（或）(在备用模式) opened cycle cooling water pump automatic startup(OR) （in standby position） 14.5.1 另一台开式冷却水泵停止(3 秒脉冲) Another OCCW pump stopped (3-second pulse) 14.5.2 另一台开式冷却水泵运行且出口母管压力低 Another pump is running and pump outlet main pressure falls below ‘L’ 14.6 开式冷却水泵自动停（或） OCCW Pump automatic stop(OR) 14.6.1 开式冷却水泵运行 10 秒后出口蝶阀仍在关位 Outlet valve is still closed 10 seconds after OCCW pump startup 14.6.2 开式冷却水泵电机定子绕组温度高高 OCCW pump motor stator winding temperature “HH” 14.6.3 开式冷却水泵电机轴承温度高高 OCCW pump motor bearing temperature HH 14.6.4 电动滤网旁路电动门和（电动滤网入口电动门或电动滤网出口电动门）均关闭 All are closed of The motorized filter bypass motorized valve and (The motorized filter inlet or outlet motorized valve) 14.7 开式冷却水泵允许启动条件（与） Startup conditions for OCCW Pump （AND） 14.7.1 开式冷却水泵电机线圈温度不高 OCCW pump motor stator winding temperature is not H 14.7.2 开式冷却水泵电机轴承温度不高 OCCW pump motor bearing temperature is not H 14.7.3 开式循环冷却水泵入口门已开 The inlet valve of OCCW pump is open. 14.8 开式冷却水泵出口电动门自动开 OCCW pump outlet motorized valve auto open. 14.8.1 开式冷却水泵运行 OCCW pump is running 14.9 开式冷却水泵出口电动门自动关 OCCW pump outlet motorized valve auto close 14.9.1 开式冷却水泵停止 OCCW pump stop 14.10 开式冷却水泵出口电动门允许关(与)


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Closed condition of OCCW pump outlet motorized valve（AND） 14.10.1 开式冷却水泵停止 OCCW pump is stopped 15.发电机定子冷却水系统 Generator stator winding cooling water system 15.1 发电机定子冷却水泵 A（B） Generator stator cooling water pump A（B） 15.1.1 若本泵在备用，当运行泵停运或定子冷却水入口流量低或出口母管压力低，保护

联锁启备用泵 When the pump is at standby status, if running pump stops or inlet flow of Generator Stator Cooling Water low or outlet main pipe pressure is low, interlock protection will start the oil pump 15.2 发电机补水电磁阀 Generator stator cooling water fill water solenoid valve 15.2.1 发电机定子冷却水箱水位低，联开 If generator stator cooling water tank level low, the solenoid valve will be opened 15.2.2 发电机定子冷却水箱水位高，联关 If generator stator cooling water tank level high, the solenoid valve will be closed 16.0 循环水系统 circulating water system 16.1 A（B）循环水泵启动允许条件 A（B）circulating water pump start permit 16.1.1 循环水泵出口液控蝶阀在远控位 Hydraulic outlet butterfly valves of CWP are remote control. 16.1.2 循环水泵处于远方控制位置 CWP A are selected to “Remote”. 16.1.3 循环水泵前池液位正常 CWP1 SUMP level normal 16.1.4 循环水泵无保护跳闸信号 No protection trip signal of CWP 16.1.5 冷却水压力>0.2MPa The cooling water pressure >0.2MPa 16.1.6 循环水泵轴承温度正常<65℃ CWP bearing temperature normal <65℃ 16.1.7 循泵电机轴承温度正常<65℃ CWP bearing temperature normal <65℃


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16.1.8 循泵电机线圈温度正常<90℃ CWP motor winding temperature normal <90℃ 16.2 A（B）循环水泵保护跳闸条件 A（B）circulating water pump protection trip condition 16.2.1 循环水泵运行 30 秒后出口蝶阀仍在关位 Outlet butterfly valve still shut while CWP running 30 seconds 16.2.2 循环水泵前池液位低低延时 2 秒 CWP SUMP level LL with 2 seconds delay 16.2.3 循环水泵电机定子绕组温度高高 CWP motor stator winding temperature “HH” > ℃ 16.2.4 循环水泵轴瓦温度高高 CWP bearing temperature “HH” > ℃ 16.2.5 循环水泵电机轴瓦温度高高 CWP motor bearing temperature “HH” > ℃ 16.2.6 循环水泵出口蝶阀 15 度延时 2 秒，且泵运行 90 秒跳泵 CWP out MOV open 15% and delay 2s while CWP running 90s. 16.3 循环水泵自动启动 CW pump auto start 16.3.1 若本泵在备用，当运行泵停运，联锁启备用泵 When the pump is at standby status, if the running pump stops, the standby pump will start 16.3.2 若本泵在备用，当运行泵出口压力低，联锁启备用泵 When the pump is at standby status, if the running pump outlet pressure is low, the standby pump will start. 16.4 A（B）循泵出口液动蝶阀 16.4.1 循环水泵 A 启动(脉冲)，或停失败自动开 CWP A start demand (pulse start), auto open 16.4.2 循环水泵停止，自动关 CWP stop demand (pulse stop), auto close 16.5 循环水泵组程控启 CWP sequence startup 16.5.1 开冷却润滑水入口电磁阀。 Open the cooling water inlet electromagnetic valve 16.5.2 冷却水入口电磁阀开 180 秒后，关 3 号机组循环水泵出口蝶阀。 After 180S that the cooling water inlet electromagnetic valve is opened .Close CWP outlet butterfly valve 16.5.3 循环水泵出口蝶阀关到位，开循环水泵出口蝶阀。


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When the CWP outlet valve is closed, then open it. 16.5.4 循环水泵出口蝶阀开到 15 度后启动循环水泵。 When CWP outlet butterfly valve has been opened to 15 degree start CWP 16.5.5 循环水泵运行且出口蝶阀全开，延时 300 秒，关冷却润滑水入口电磁阀。程控启

结束。 When the CWP outlet valve is opened, delay 300s, close the cooling water inlet electromagnetic valve. 16.6 循环水泵组程控停 CWP sequence stop 16.6.1 开冷却润滑水入口电磁阀 Open the cooling water inlet electromagnetic valve 16.6.2 关循环水泵出口蝶阀到 15°(关 75°) Close CWP outlet butterfly valve to opening of 15°(关 75°) 16.6.3 当循环水泵出口蝶阀关到 75°开度，停止循环水泵 When CWP outlet butterfly valve closed to 15° opening, stop CWP 16.6.4 当循环水泵已停止且出口蝶阀全关，顺停完成 When CWP stopped and its outlet butterfly valve are fully closed, CWP sequence stop finished. 16.7 冷却塔用风机启动允许条件 Cooling fan start permit 16.7.1 电机轴承温度不高（2 点） Cooling tower motor bearing temperature not high (2 points) 16.7.2 冷却塔用风机油位不低 Oil level of cooling tower motor not low 16.7.3 冷却塔用电机油温不高 Oil temperature of cooling tower motor not high 16.7.4 冷却塔用风机振动不高 Oscillation of cooling tower motor not high 16.7 冷却塔用风机保护跳闸条件 Cooling fan protection trip condition 16.8.2 电机轴承温度高高（2 点） Cooling tower motor bearing temperature high high (2 points) 16.8.3 冷却塔用电机油位低低 Oil level of cooling tower motor low low 16.8.4 冷却塔用电机油温高高 Oil temperature of cooling tower motor high high


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16.8.5 冷却塔用电机振动高高 Oscillation of cooling tower motor high high 17 高/低压旁路系统 17.1 高压旁路阀 HP bypass valve 17.1.1 高旁阀后温度＞390℃, 延时 3 秒，高压旁路阀快关 As the back temperature of HP bypass valve＞390℃, delay3s,HP bypass valve quickly close 17.1.2 低旁快关, 高压旁路阀快关 As LP bypass valve quickly close, HP bypass valve quickly close 17.1.3 汽机跳闸或发电机解列,高压旁路阀快开 As turbine trip or generator switch trip, HP bypass valve quickly open 17.2 高旁减温水隔离阀 HP bypass valve disurperheater insulation valve 17.2.1 高压旁路阀开度＞3%，自动开 The position of HP bypass valve＞3%， auto open 17.2.2 高压旁路阀开度≤3%，自动关 The position of HP bypass valve≤3%，auto close 17.3 高旁减温水调节阀 HP bypass valve disurperheater control valve 高压旁路阀开度＞3%，自动投自动，跟踪当前温度（温度底限 320℃） The position of HP bypass valve＞3%，auto change to auto model, and track the current temperature(the low limit of temperature is 320℃) 高压旁路阀开度≤3%，自动关 The position of HP bypass valve≤3%，auto close 高旁减温水调节阀开允许条件：高旁后温度＞230℃ The open permit of HP bypass valve disurperheater control valve: he back temperature of HP bypass valve＞230℃ 17.4 低压旁路阀 LP bypass valve 17.4.1 高旁快开,联锁低旁快开 As HP bypass valve quickly open, LP bypass valve quickly open. 17.4.2 凝汽器水位＞1200mm,低旁快关 As condensate water level ＞1200mm, LP bypass valve quickly close 17.4.3 凝汽器真空＜65Kpa,低旁快关 Condensate vacuum＜65Kpa, LP bypass valve quickly close 17.4.4 凝结水减温水压力＜1.5Mpa,低旁快关


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Condensate DSH water pressure＜1.5Mpa, LP bypass valve quickly close 17.4.5 低压旁路阀后温度＞120℃,或凝汽器温度高高低旁快关 The back temperature of LP bypass valve＞120℃,or condensate temperature HH, LP bypass valve quickly close 17.5 低旁减温水隔离阀 LP bypass valve disurperheater insulation valve 17.5.1 低压旁路阀开度＞3%，自动开 The position of LP bypass valve＞3%， auto open 17.5.2 低压旁路阀开度≤3%，自动关 The position of LP bypass valve≤3%，auto close 17.6 低旁减温水调节阀 LP bypass valve disurperheater control valve 17.6.1 低压旁路阀开度＞3%，自动投自动，跟踪当前温度 The position of HP bypass valve＞3%，auto change to auto model, and track the current temperature 17.6.2 低压旁路阀开度≤3%，自动关 The position of LP bypass valve≤3%，auto close 18.主机保护部分 Turbine protection 18.1 110％电超速保护 110% electric overspeed protection 18.1.1 TSI 超速保护 TSI overspeed protection 18.1.2 DEH 超速保护 DEH overspeed protection 18.2 锅炉 MFT Boiler MFT 18.3 发电机动作保护跳机 Generator trip 18.4 润滑油压低低（三取二）0.069MPa Lube oil pressure LL(two of three) 0.069MPa 18.5 凝汽器真空低（三取二）（凝汽汽压力大于 19.6kpa） Condenser vacuum L(two of three)(condenser pressure ＞19.6kpa) 18.6 EH 油压力低（三取二）小于 7.8MPa EH oil pressure L(two of three) ＜7.8MPa 18.7 高排金属温度大于 432℃（DEH）


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HP steam exhaust inner wall temperature ＞432℃ 18.8 轴振大跳机保护（TSI）大于 0.25mm Shaft vibration (TSI) ＞0.25mm 18.9 轴向位移大（TSI）－1.65mm,+1.2mm Displacement of shaft direction (TSI) －1.65mm,+1.2mm 18.10 胀差大跳机（TSI，高中压缸＜-6.6mm, ＞+11.6mm,低压缸＜-8mm, ＞+30mm） Difference of bulge (TSI, HP casing＜-6.6mm, ＞+11.6mm,LP casing＜-8mm, ＞+30mm ) 18.11 主控室手动停机 Remote manually stop 18.12 推力瓦温度高 110℃（DEH），22 个测点；支持瓦温度高 115℃，（DEH）6 个测

点 Thrust bearing temperature ＞110℃（DEH）; turbine bearing temperature ＞115℃（DEH） 18.13 DEH 失电跳机保护 DEH lost power 18.14 发电机断水保护（延时 30 秒） Generator stator lost cooling water (delay 30s) 18.15 低压缸排气温度高高 107℃ LP exhaust steam temperature ＞107℃ 18.16 主汽入口温度低低（DEH）(负荷大于 50%，主汽温度小于 474℃) steam temperature LL＜474,as unit load ＞50%

List of Turbine Interlock and Protection Item

Documents

cold reheat

kmpcl6 x600

water bypass

outlet motorized

lube oil pressure

outlet motorized

interlock

running pump