JAKSON DG SETS LIGHTING IN ODISHA
The different types of generator faults can be categorized into two parts, the internal fault & the external fault. The internal fault in DG Set occurs due to problems in the DG Set components & external faults due to abnormal Genset operational conditions or any external network issue. Most of the time the fault comes in the prime mover mechanical components of diesel generator, gas, or any other fuel DG Set. Prime mover is nothing but the components which are responsible for the drive of the generator & its combustion engine (diesel engine). Jakson Dg Sets Lighting in Odisha.
Due to the fault in the generator, you have to face unwanted current flow which is more dangerous for the operator. Also, the fault cause number of problems such as current loss, overheating, interruption of power delivery & many more. The proper care of the generator reduces the priority of problems in the DG Set. The Genset protection system detects the fault & after that, the circuit has tripped which fault occurs. Lastly, the physical location of the fault will be identified. Here in this article, we have shared the knowledge for various types of generator faults, how to identified them & ways to protect your home or industrial generator against those faults. Jakson Dg Sets Lighting in Odisha.
Common faults in DC generator
As previously we cleared that a DG Set mainly facing two types of generator faults internal & external. Also, the reasons behind these faults are always different. Here get the detailed information for the different types of internal generator fault.
1. Stator winding fault in the generator
The stator fault mainly occurs due to the insulation failure of the stator coils. The problem in stator winding is more expensive for the user because that is responsible for the high damage in the Genset. So it this very necessary to have automatic generator protection to avoid such types of problems. The major sorts of such types faults are:
- Phase-to-phase
- Phase-to-earth
- Windings overheating
- Inter-turn
2. Rotor circuit fault in DG Set
Due to the severe mechanical errors, your DG Set is facing rotor circuit fault. The result of this fault is overheating which may damage the Genset rotor. The unbalanced currents can cause severe vibration and acute overheating problems. Rotor overheating caused due to the unbalanced loading of the generator is easily detected by rotor temperature indicators. The major types of rotor faults are:
- Earth fault
- Winding short-circuit of a rotor
- Overheating
3. Loss of field
The loss of field in DG Set occurs due to the failure of excitation. That will arise the failure of the auxiliary supply & the driving of motor also one of the major responsible reason for the loss of excitation in a generator. As we know the field in the AC generator consists of a coil within the Genset which is responsible to receive voltage from excitation & produce magnetic flux. Jakson Dg Sets Lighting in Odisha
4. Vibration in DG Set
Due to the rotor imbalance, we are facing high vibration issue in the power DG Set. Because of coupling, components non-connectivity, oil issue, rubbing, misalignment, or other journal issues. Continuous vibration in DG Set may be damage internal parts of the generator during the operation, To avoid this problem you need to do a proper inspection
5. The operational issue in the DG Set motor
To get the continuous power supply during the main grid failure, generator components running functionality in a proper manner are very important, especially the motor of DG Set. Most of the time due to continuous running hours your power generator gets overheating. And you facing an unwanted shutdown. So this is very important to check water level or other generator cooling method during the operation of DG Set.
6. The generator is out of step
Generator out of step or Loss of Synchronism occurs when a generator experiences a large increase in the angular difference of the ElectroMotive Force. That issue will occur when other generators to which it is connected, usually following a major power system disturbance. To avoid this problem in DG Set you need to check the connection between both DG Set, operational condition & performance of Genset.
7. Overheating in bearing & pressure in the lubrication
As we previously explained, the overheating in the DG Set is one of the main reasons for the auto shut down of the standby generator. Also, the bearing can be expected to fail and cause other equipment to fail without lubricants. Overheating of the generator is the result of improper lubrication. Jakson Dg Sets Lighting in Odisha
Types of External Faults in a Generator
Types of external faults in a generator are due to abnormal operating conditions and external power system faults. Here get the list of a few common external faults that occur in the generator for home or any industrial DG Set.
- External short-circuit
- Non-synchronized connection
- Out-of-step
- Overload
- Cummins generator Overspeed fault
- Phase unbalance and negative phase sequence
- Frequency fluctuations
- Voltages fluctuation
This is the list of various external faults in the DG Set that occurs due to further reasons. There is no matter which type of DG Set you are using either 3 phase or single-phase generator. The problem you are facing due to any of these reasons in your different type of Genset.
How to protect a DG Set- Generator protection tips
The generators are connected to an electrical power system, hence any fault in the power system should be eliminated from the generator to avoid severe damages. Many varieties of faults occur in the system, that is why generators are protected with full protective schemes. The risk of a fault cannot be eliminated even after ensuring efficient construction, design, operations, and preventive means of protection. The device used in the generator ensures the elimination of faults that occur as quickly as possible. Jakson Dg Sets Lighting in Odisha
There are mainly two type of possibility to protect a Genset, the first one Protective relays to detect fault that occurs outside the DG Set & the another one is Protective relays to detect fault that occurs inside the DG Set. Here get the list of the best way to protect your generator against any problem.