Parallel Operation Problems

Question

I need information about how to set a load sharing devices (woodward brand 2301 A), because when it's working parallel is always take over the load to high and caused reverse power protection active, are there any explanation regarding to those problem's

thank you for your attention and cooperation

PS: We used SPM-A for synchronizer

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Woodward 2301A Speed Control

• The Woodward 2301A Speed Control controls the speed or load of diesel or gas engines, or steam or gas turbines.

• The unit provides control in the isochronous mode, with droop available through an externally wired potentiometer. The isochronous mode is used for constant speed of the controlled prime mover as long as it is able to provide power to satisfy the load.

• The - 2301A Speed Control is compatible with Woodward SPM-A synchronizers, load sensors, and other power generation controls. These controls can be added to the system at any time, using the auxiliary or SPM inputs to the 2301A Speed Control. The 2301A Speed Control is available for forward- or reverse-acting applications, and can be used with single or tandem actuators. High voltage models accept 88 to 132 Vac or 90 to 150 Vdc, and low voltage models accept 10 to 40 Vdc supply for control power.

Answer 1

It is very easy to tell what is being asked here. What is needed is specific detail. Two devices are intended to be used in a load sharing arrangement. The 2301A load sharing controller is meant to enforce sharing. Failure to work suggests that the voltage does not droop enough to allow the voltage to fall below that of the second energy source before the load gets too large and trips the overload protection.

The 2301A is a device which allows load sharing between two power generation systems. It creates a sagging load/voltage relationship so that as an alternator etc is loaded it drops below local bus voltage and causes a more lightly loaded and thus higher voltage generator to pick up progressively more load.

Assuming that the equipment is not faulty it seems likely that voltage shaping being applied to one machine is not adequate to drop the voltage enough for the second alternator to load share. The 2301A can have the amount of "droop" under load adjusted with a pot. I'd guess that the pot needs to be adjusted so that the voltage droops more under load than at present.

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