Skip to main content

Will Sudden Short Circuit of Diesel Generator Set Cause Harm?


What is the harm of sudden short circuit of diesel generator set?

1.When the diesel generator is short-circuit suddenly, the end of the generator winding will be greatly impacted by electrodynamic force, which may cause the end of the coil to be deformed or even damage the insulation.

2. Overvoltage in stator and rotor windings of diesel generators is harmful to generator insulation. Powerful impulse current in stator winding, combined with overvoltage, may lead to breakdown of weak insulation links.



3.Diesel generators may produce violent vibration, which may cause strong and destructive mechanical stress on some structural components.

4.Sudden short circuit on the secondary side will damage the transformer.

When the secondary side of transformer is short-circuited suddenly, a huge short-circuited current will be generated in the winding, whose value can reach 20-30 times of the rated current. The harm to transformer at so large current is as follows:

1.Under the action of huge short circuit current, huge electromagnetic force will be produced in the winding, whose value can reach 400-900 times of rated electromagnetic force, which will destroy the mechanical strength of the winding.

2.Huge short-circuit current will heat the winding, produce high temperature, and may burn the winding.

Therefore, the transformer must have reliable short circuit protection device, so that the transformer can operate safely and normally.

If the short-circuit phenomenon occurs in diesel generating sets, corresponding measures can be taken.

1.After checking the fuse, it was found that the fuse had been burned out. The phenomenon of burning of the components in the control box was observed. During the checking, it was found that the two-stage tube with limited current had been burned out.

2.Six rectifier diodes were measured with a multimeter, and no abnormality was found from the test results.

3.After replacing the current limiting diode and fuse, start up the diesel engine, when the rated speed is reached, the generator is not generate electricity.

All above faults indicates that the fault may be that the residual magnetic voltage inside the exciter is too low (in the process of normal power generation, a sudden short circuit of the electrical equipment and a large fireball will result in the disappearance of the residual magnetic voltage inside the exciter).

4.After charging the exciter with a battery, start the diesel engine to the rated speed, and the generator starts to generate electricity and meets the required requirements.

Sudden short circuit is a serious problems for diesel generator sets, we need to deal with it in time, so that can make diesel genset service life longer. Starlight power generator manufacturer will provide support for you all the time if you have any generator question or need to purchase diesel generators.
标签：

Comments

Post a Comment

Popular posts from this blog

What Is the Difference Between Electric Motor and Electric Generator

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and winding currents to generate force. In certain applications, such as in regenerative braking with traction motors, electric motors can be used in reverse as generators to recover energy that might otherwise be lost as heat and friction. An electric generator operates in the reverse direction, converting mechanical energy into electrical energy. Electric generator can be divided into various type, open type, silent type, trailer type, portable type and container type, etc. Electric generator is mainly composed of diesel engine & alternator. Electric generator set is mainly composed of engine, alternator, control module, and common base. Electric generator :- Electric generator is a type of machine which converts mechanical input (energy) into electrical output (...
1 comment
Read more

Engine Fault Code Messages - Volvo Penta Engine

Volvo Penta Engine Fault Code When a malfunction has occurred and the diagnostic system has generated one or more fault codes, these are read out differently depending on the equipment used. Please refer to “Fault code messages”. If the system indicates that a fault code has been set: 1 Cut engine speed to idle, or shut the Volvo engine off. 2 For DCU/DU Read the fault code from the display, please refer to Reading fault codes via the DCU or Reading fault codes via the DU. For CIU press the diagnostic button and read the fault code, by observing the flashing of the diagnostic lamp. Refer to Reading fault codes via the diagnostic lamp, CIU. 3 Look up the fault code in the Fault Code Register chapter and take the recommended measures. Reading fault codes via the DU (Display Unit) Depending on the severity of the fault the text, either WARNING! or ALARM STOP (a buzzer sounds) will be shown on the display 1 Press any button to come to the fault list. The f...
Post a Comment
Read more

Perkins Powerful 4000 Series Engine at Middle East Electricity

The Perkins team returns to Middle East Electricity (MEE) in 2017 to promote the full range of its diesel and gas electric power engines. Taking pride of place is the 4000 Series platform, which is designed to provide prime or standby power in critical applications. The evolution of the Perkins 4000 Series The steady evolution of the powerful 4000 Series has taken place over a number of years, thanks to significant investment from Perkins. Its development means the engine is used for prime and standby applications by original equipment manufacturers (OEMs) and end-users. The 4000 Series is tough and durable, provides consistent performance in the harshest conditions, and is proving to be a constant, reliable electric power source for prime applications all over the world. Perkins sells hundreds of 4000 Series engines every year into the prime power market. It has built more than 50,000 4000 Series engines for some of the world’s biggest businesses, and up to 30 pe...
1 comment
Read more