به بخش توصیه های حفاظتی G.59 فوق توجه نموده اید؟ به هر حال ممانعت از اضافه بار شدن ژنراتور از طریق سیستم کنترل اعمالی که هر ماشین متناسب با مشخصه کنترلی گاورنر خود تقبل بار می کند امکان پذیر است (DROOP MODE). Electronic governors make it easy to change the control parameters within the feedback loop and to send or receive electrical analogue signals. Functions such as load sharing, load management, and automatic synchronizing are easier than with hydraulic governors. Load sharing between paralleled sets is achieved by interconnecting a load share signal to each governor, if one machine is taking too great a share of load the sharing signal will react to reduce its fuel supply. Early electronic governors used analogue systems which compared the measured quantity with the set value and made any necessary corrections to the fuel rack position. Modern governors use digital systems which digitize the measured and set values and feed the results into a processor which determines any corrections to be made to the fuel rack position. Digital systems are more versatile than analogue, changes to the operating parameters or sequence can often be achieved by a software adjustment instead of having to undertake a hardware modification. For the simplest applications digital systems have no particular advantages, but they may well become the normal manufacturing standard. There are four speed governor performance classes for diesel engines defined in ISO 8528 and the data relating to them . It is important to note that the governor on its own does not determine the performance parameters, which are affected by the complete engine/generator system. The system includes the governor, voltage regulator, generator, flywheel, and the load and is affected by the surplus engine torque available for governing purposes.
