1、物流专业学生期末自我评价 there After ignition, combustion should focus its attention on what Reducing boiler hot loss measures DC-what are the main characteristics of the boiler Boiler steam after Bao Biwen how when shutdown to control steam drum wall temperature difference From a run standpoint, what are the m
2、ain measures to reduce coal consumption for power supply Talk about how to control the water level Generator after splitting, 6KV why to promptly exit the standby power switch Why the current transformer secondary side in the operation are not allowed to open Why synchronous generator excitation cir
3、cuit of the degaussing switch can be changed into a lively breaker Generator step-up process, why the rotor and stator currents to monitor Why are rotor one point ground prone to 2nd after ground Try 380V discussed following the grounding of auxiliary power system, wiring for three-phase five-limb t
4、erminal of PT secondary voltage change Generator incomplete phase operation principle is what Yn,d11 (Y0/-11) connection of generator-transformer systems, generator open-phase running any help Why to install 100% stator grounding protection for large generator Why does not allow running secondary sh
5、ort circuit Generator excitation, excited, what is the of the overexcitation limit Generator loss of excitation in the running, what is the impact on the system and the generator itself Anti-cuozhong on the prevention of excitation system of generator caused by fault what damage try discussing what
6、are the measures of improving power system dynamic stability What is a switching operation of the electrical equipment main content switching operation of power plants and power systems are there Try discussing malignant electric misoperation, which misuse personal, most of the equipment Switch serv
7、ice power fast cutting device in several ways in the alternate to the State, the standby power switch refused to deal with Try discussing switching operations should focus on preventing misoperation accident New operation or after majorrepair of transformers why test Try discussing steps measured wi
8、th a Megger insulationresistance of electrical equipment Lu method is used to find DC grounding considerationarewhat when there are two point grounding with the polarity should be . 1.600MW supercritical supplementary questions, blank mini disk can be divided into manual and two oil turbine; oil tur
9、bine disc wheel car, the turning speed of the rotor can be controlled at around 80120 RPM (high speed), and it is fulfilled by controlling access to the oil-pressure turbine oil turning on/off and speed level. Medium-speed Coal mill explosion-proof steam from a wind room, _, _ separator casing into
10、the ground to prevent the mill explosion in the process of starting and stopping. Mill load is to accept current signal to the coal control proportional pressure relief valve size, change of hydraulic accumulators and hydraulic cylinders, to achieve load changes. Sealed Air for coal pulverizer drive
11、, Rod bearings, roller. Cold wind of a user with a sealed air blower air, sealed air, ground coal to a cold wind. Turbine sealing oil primary oil source is air-side seal oil pump, the first alternate oil sources (mainly alternative oil source) is the main oil pump of turbine. When the primary oil so
12、urce failure, the first spare source automatic put into operation. Second alternate oil sources primary alternate supply AC electric sealing oil pump on the fuel tank, when the turbine speed is less than 2/3 rated speed or first alternate source failure occurs, the second spare source automatic swit
13、ch. Third alternative oil source is provided by DC sealing oil pump. Main fuel tank exhaust throttle should be located 2 steel closing door operation handwheel locking is not allowed and obvious warning signs should be hung. Steam engine room caught fire, when it threatened to tank or fuel system, s
14、hall immediately destroy the vacuum emergency stop, and turn on the tank accident put the throttle, speed and control on oil should be appropriate, to ensure that the rotors lubricants are not interrupted before static. Shaft seal overflow overflow to #8 the low pressure under normal conditions, whe
15、n #8 the low pressure overflow when the outage to the condenser. Sliding pressure operation of deaerator may avoid deaerator steam source for throttling losses. Normal operation of steam turbine steam distribution mode for steam distribution nozzle. After the turbines stopped, if the rotor cannot ro
16、tate for a short time, rotor _ _ under bending, highest in _ _ highs at this point rotor should be reset, close the hydrophobic _ _ cylinder, keeping _ up and down temperature difference between cylinder _ monitor rotor _ _ deflection, when after you verify that the rotor is, and then manually turning 180 o. When turning the motor over current or rotor disc doesnt move, do not forcibly barring _ _, but can not turn _ forced _ or tu
