Parallel operation of the diesel generator of Green Power

Diesel generators are devices that convert mechanical energy into electrical energy. They are used to provide backup power or as the main source of electricity in remote areas where there is no grid access. The parallel operation of diesel generators provides higher reliability and efficiency in the generation of electricity.

Diesel Generator Components

The diesel generator consists of the following main components:

a) Diesel engine: It is the engine that converts fuel into mechanical energy.

b) Alternator: It converts the mechanical energy produced by the diesel engine into electrical energy. It consists of a rotor (stator) and a stator (rotor). The rotor contains coils that generate alternating current when rotated by the mechanical energy transmitted by the motor. The stator, on the other hand, contains permanent magnets that interact with the windings, creating an electric current.

c) Cooling system: Air or water cooling system is usually used. Air cooling involves blowing air through the radiator, while water cooling uses liquid circulating between the radiator and the water circuit.

d) Lubrication system: Oil reduces friction between moving parts, dissipates heat and prevents the accumulation of dirt or sludge.

e) Fuel system: This system is responsible for supplying fuel to the engine.

f) Control System: Controls the operation of the generator including starting, stopping and voltage regulation. It can be operated manually or automatically.

Principles of operation of parallel diesel generators

Parallel operation of diesel generators involves connecting two or more generators together so that they can share the power supply load.

When two or more diesel generators operate in parallel, each generator operates independently, providing continuous power. In the event that a generator breaks down or needs to be shut down for maintenance, the remaining generators continue to operate without interrupting power. This ensures power continuity, which is especially important for hospitals, data centers and telecommunications facilities.

Types of parallel connections

There are two main types of parallel connections for diesel generators:

a) Continuous parallel connection: In this type of connection, all the generators are permanently connected and share the power supply load. This means that if one generator fails, the remaining generators take all the extra power needed to maintain the desired output current.

b) Selective parallel connection: In this type of connection, generators are connected and disconnected from the common load based on their condition and load requirements. When the load is low, only one or a few generators are running while the others are disabled to save fuel and reduce emissions. When the load increases, additional generators are switched on to meet the demand.

Advantages of parallel operation of diesel generators

a) Improved reliability

b) Improved efficiency

c) Stepwise power increase

d) Reduced startup time

e) Improved cargo management

Parallel operation of diesel generators is a proven method of improving the reliability, efficiency and flexibility of the power supply.