What are the specific operating methods for diesel generators?
As we all know, diesel generator is a professional power generation equipment. It is not allowed to operate without professional staff. To operate a diesel generator set, it must be operated, stopped, and powered by a qualified electrician approved by the relevant department. Specific operation methods for diesel generators. Let's find out together.
1) Automation of a single diesel generator set for emergency power supply. Keep the voltage and frequency constant during operation.
2) The generator set should automatically maintain the state of emergency readiness (automatic charging of batteries; automatic charging of gas cylinders), and pre-lubrication automatically before starting the diesel engine.
3) When the diesel generator set needs to start, run or stop, it can realize automatic start, run or stop according to the automatic control instruction or remote control instruction.
4) During the operation of the generator set, if there are abnormal conditions such as overload, short circuit, overspeed, overfrequency, high water temperature, low oil pressure, etc., it can be automatically protected.
5) The generator set should be equipped with acousto-optic signal systems that indicate normal operation and abnormal operation. These indicators and alarm signals indicate the operation of the unit.
6) The generator set should be able to run continuously for 4 hours in the unattended condition.
(2) In addition to meeting the requirements of the first-level automatic and motorized units, the second-level automatic diesel generators should also have the following functions:
1) The diesel generator set should have the function of automatic replenishment of fuel oil, oil and cooling water.
2) The generator set can run continuously for 240 hours in the unattended condition.
(3) In addition to meeting the requirements of the first and second-level automated generating units, the three-level automated diesel generating units must also have the following functions:
1) When the self-starting of the generator set fails, the self-starting control program system should be able to automatically transfer the starting instruction to another standby unit.
2) The generator set should be able to complete the automatic parallelization and disassembly of two generator sets of the same model and specifications according to automatic control instructions or remote control instructions.
3) When generating units run in parallel, they should be able to automatically distribute the active and reactive power output.
4) In addition to the various protections of the first and second level automation units, the generator set should also have functions such as reverse power protection.
Three sets of three three-stage automated generator sets can form an automated power station. Two of them are used as common power supply units and one is used as a backup. Therefore, functions related to parallel operation should be added. The automatic control system should automatically start, stop, juxtapose, dismantle, and perform load distribution for three diesel generator sets based on load and operating conditions. The fault is divided into two levels: the first level is a minor fault, and uninterrupted power supply should be realized, that is, the standby generator set is put into parallel operation, and then the faulty generator set is stopped. The second level is a serious fault. When the faulty generator set is stopped in an emergency, the backup generator set is immediately put into operation, and the power supply is allowed to be interrupted for the secondary load.
- Blue smoke, fire reason: It means that the engine is burning oil. There are three types of reasons: first, the piston ring goes opposite, and the oil comes in the cylinder; the second is the oil level of the oil pan of the atmosphere filter, which leads the ring. The height of the groove; Third, the gap between the duct and the valve stem is too poor. Expulsion idea: Adjust the piston ring so that the opening teeth of the ring are staggered 120 degrees or 180 degrees, and the opening teeth of the ring should avoid the piston pin hole and the side pressure is poor. Adjust the height of the oil level of the oil filter of the atmosphere filter below the height of the annular groove; if the clearance between the duct and the valve stem is too poor, replace the component and reduce the clearance. The normal mutual assistance clearance between the two is 0.0
- Before starting, you should check whether the fuel volume of the fuel tank is rich, and there is no oil leakage in each oil pipe and the discussion area; whether the cooling system water is rich, clean and leak-free, and whether the fan belt is tight or not. The internal combustion engine and generator drive parts should be connected and trusted. The wires of the input line are well-insulated, complete and effective in all aspects. After starting, it should run at low speed for 3 to 5 minutes. After the temperature and oil pressure wheel are normal, the initial work can be done. The generator should be no different in the speed increase. Ring, the slip ring and commutator are well brushed, no jumping and sparking phenomenon. After the operation is stable and the frequency and voltage reach the rated value, power can be supplied to the outside.
- The diesel engine is working normally, but the generator fails to generate electricity or the voltage is very low. This may be due to the components associated with the generator, such as: the exciter is damaged, and the excitation voltage cannot be supplied. The excitation current is taken in. The rotor's dead center residual magnetism is weakened or declining. It will make the generator unable to generate electricity or the transmission voltage is extremely low. The right to respond is usually: use an appropriate DC voltage and directly connect to the excitation winding according to the polarity Magnetization. Carefully inspect the exciter and the cyclotron rectifier, find abnormal components or windings, and replace them for restoration. The generator's transmission voltage is unstable, and
- In the power generation industry in China, we have been working hard, pursuing the concept of quality and service, and for the sake of customers, the full power generator chooses China and your generator is a professional housekeeper. At present, the diesel generator set maintenance market refers to damage inspection and routine maintenance. Two aspects: after maintenance refers to the failure of the diesel generator, there are problems with various accessories, such as replacing the generator or
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