Diesel Generator Tech

What is the difference between primary frequency regulation and secondary frequency regulation of diesel generator sets? The primary frequency modulation is to participate in the power grid cycle adjustment with certain amplitude limiting and dead zone, and the secondary frequency modulation is to accept the command of middle note or manual command. The primary frequency regulation is carried out by the governor device, and the small frequency regulation range belongs to fine tuning. The secondary frequency modulation is performed by a frequency modulator. The large frequency modulation range belongs to coarse tuning, primary frequency modulation. When each   diesel generator set   is connected to the grid for operation, the frequency of the grid changes due to external load changes. At this time, the regulating system of each diesel generator unit participates in the regulation function, changing the load carried by each diesel generator unit to balance it with external loads...

Do you know how to operate the oil delivery pressure detection of the diesel generator set oil delivery pump? When detecting the oil delivery pressure of the oil delivery pump, the oil delivery pump can be installed on the   diesel generator set , and an oil pressure gauge can be connected in series between the oil delivery pump and the diesel filter to start the diesel generator set. When the normal speed is reached, the pressure change on the oil pressure gauge should be observed. When the speed is above 600 revolutions per minute, the oil pressure should not be less than 147KPA. When the speed is 750 revolutions per minute, the working pressure is 205KPA, and the oil delivery pump should be able to continuously supply oil. And the fuel supply should not be less than 250ML per minute. If the pressure is too high, it indicates that the fuel pump spring is too tight, and the pressure regulating valve or filter is not working properly. If the pressure is too low, it indicates that t...

Do you know the impact of not cleaning the air filter or replacing the filter element in a timely manner on diesel generators? The air filter is an important component of the diesel engine supply system, which can purify the air entering the trachea. If the air filter is not maintained in a timely manner, it can cause early wear and tear on cylinder liners, piston rings, intake and exhaust valves and other parts, resulting in a decrease in engine power and even shortening the service life of diesel engines. Experiments have shown that   diesel generators   without air filters have an 8-fold increase in cylinder wear, a 9-fold increase in piston ring wear, and increased wear on other components. If the air filter is not maintained in a timely manner or with poor maintenance quality, the effectiveness of the filter will significantly decrease. Some operators, in order to save fuel, do not install an air filter, or do not replace it in a timely manner when the filter is damaged, ...

How should we diagnose any abnormalities or malfunctions when using diesel generator sets? In fact, many times customers can diagnose through some simple methods. This article will introduce Dingbo   Power Generation   Equipment one by one for your reference. 1. Listening method: Use a stethoscope or use a metal rod to listen to the sound of each cylinder exploding near the fuel injector body. The normal sound is similar to the sound of metal tapping "dangdang". If there is only a continuous and non crisp sound of 'ho ho', then the fuel supply to the cylinder is too low or it has not caught fire in a timely manner. If the impact is large, it indicates that the fuel supply of the cylinder is too large or the fuel injection time is too early. 2. Color observation method: The diesel generator set is working normally, and the exhaust gas discharged is light gray with a slightly darker load. If black gas is discharged, it indicates incomplete combustion of combustible gas....

Have you ever learned about the magnetic wire cutting motion of Cummins diesel generator sets? Firstly, they are driven by water turbines, steam turbines, diesel engines, or other power machinery. It converts the energy generated by water flow, airflow, fuel combustion, or atomic fission into mechanical energy, which is then converted into electrical energy by a   generator . The rotor is wound by the rotor core (or pole yoke), washer, center ring, slip ring, fan, shaft, and other components. The stator and rotor of the generator are connected and assembled through bearings and end caps, allowing the rotor to rotate in the stator and cut off the magnetic field lines, thereby generating induced electromotive force. This induced electromotive force is led out through connecting terminals and connected to the circuit, thereby generating current. Cummins diesel generator sets, whether diesel or gasoline, generate a certain order of electricity from each cylinder. The thrust acting on t...

Do you know how diesel generator sets are distributed with load power? In fact, when the active power distribution of parallel diesel generator sets is severely unbalanced, and when the total load power is large, one diesel generator set is at full load or overloaded, while the other diesel generator set is still in a light load state, the capacity of the diesel generator set cannot be fully utilized, and the efficiency of the entire power station can be achieved. On the other hand, when the total power of the load is small, the imbalance of active power often causes active power circulation between   diesel generator sets , causing them to switch to the motor state, which is also not allowed for diesel generator sets. Given the above situation, special attention needs to be paid to diesel generating sets with frequent loads and large amplitude changes. The uneven distribution of reactive power in diesel generator sets, although not seriously affected, is based on a clear imbalance...

What do you think should be studied for the direct air cooling system of diesel generators? Firstly, in order to minimize the impact of wind, it is necessary to study the high temperature period in summer, the wind direction at the maximum frequency under a certain wind speed, and even avoid the distance between the A-pillar and A-pillar in the design layout. During operation, relevant data should be collected through meteorological observations and summarized based on changes in the power plant's power generation load. Before project implementation, necessary object models or digital simulation tests should be conducted to guide the comparison and summary of data collected during design and future operations. During the operation of the   diesel generator , the hot and cold air rises through the exhaust of the radiator, presenting the condition of a plume. When the wind speed exceeds 8 meters/second after blowing the radiator platform from the furnace, the feather condition is dam...