DEIF PPM-3 EDG Protection and Power Management

DEIF PPM-3 EDG Protection and Power Management

The Protection and Power Management (PPM-3) controllers are able to handle applications with up to

• 8 bus tie breakers (BTB)

• 16 diesel generators (DG)

• 1 emergency breaker (EDG)

• 2 shaft generators (SHAFT)

• 2 shore connections (SHORE)

The basic functions are:

• All breakers can be synchronised by choice

• Load-dependent start/stop operation

• Priority selection of gensets

• Redundant communication between the controllers

• Plant divided into sections for individual functionality

• Load transfer

• Heavy consumer management

• Multi-master system

In a multi-master system, all vital data is broadcasted from all units to all units, giving all units knowledge of their own position in the

application. This philosophy makes the application immune to a failing master controller.

7.1.1 Plant operation

The plant operation depends on the plant configuration, that is, if there are shaft generator(s), bus tie breaker(s), synchronisable

shore connection(s) and/or an emergency diesel generator involved. Switching between different operation modes is done with

push-buttons on the display.

Operation modes:

• Load sharing between diesel generators

• Fixed power (diesel generator)

• Load transfer between shaft and diesel generator

• Load transfer between shore connection and diesel generator

• Split busbar

The plant operational modes supported by the power management options are:

• Diesel generator operation

• Shaft generator operation

• Shore connection operation

• Split busbar(s) operation

• Emergency/harbour generator operation

• Ship-to-ship supply

The plant operational modes are configurable and it is possible to change them on the fly, dependent on the actual or desired

situation. The plant can be divided into sections by several bus tie breakers, making it possible to run different operation modes in

each section

7.1.3 Heavy consumer management

The heavy consumer management functions are available to ensure sufficient power capacity to handle the load either in terms of

number of gensets or by soft starting the load. Available power can be reserved for heavy consumers with variable load, for example

bow thrusters.

If a certain level of available power on the busbar is required to connect a heavy consumer, a function is available for starting

additional generators. Furthermore, relays can be configured to activate when a specific level of available power is reached.

7.1.4 Load-dependent operation

The load-dependent starting and stopping of the gensets are based on a power available calculation. The next generator will start

when the available power decreases below the adjustable set point. It will stop when too much power is available.

7.1.5 Priority selection

The start/stop priority of the diesel generators can be set in different ways:

• Manual selection with the 1st PRIOR push-button on each diesel generator unit

• Running hours

• Fuel-optimising calculating the best combination of generator kW size and the plant load. Works with up to 16 gensets.

7.1.6 Redundant CAN bus

In systems requiring extra operation reliability, redundant CAN bus communication lines can be used to provide backup