The two-phase operation of three-phase diesel generator sets is a common cause of damage to diesel generating units. Why is the diesel generator set equipped with fuse protection, magnetic starter additional thermal relay protection, circuit breaker over-current protection, can not be a good two-phase operation of the generator set effective protection?
Oil in use will be mixed with some impurity particles, such as particles produced by friction, debris left over by unclean parts, and early oxidized particles produced at high temperatures in individual places. These particles include iron pins, sand grains, Rubber particles, mixed in oil will cause friction side effects, damage and even burning tile, reduce service life and reliability. Diesel engine oil filter must be used, oil filter mainly with paper filter, filter paper to filter out the impurities in the oil. Some filters can be divided into coarse filter and fine filter, the particles of 0.040mm can be filtered off 100%, the particles of 0.030-0.040mm can be filtered off 99%, if the concentration of particles below 0.030mm is too large, it will cause oil deterioration
At present, the plunger type fuel injection pumps made in China are generally divided into I II III series and A, B, P, Z series pumps. The following is the introduction of the construction and characteristics of the I pump:
It is not difficult to see that in order to ensure the uniform distribution of reactive current, two methods can be used in principle: one is to let the parallel running generator have the same voltage regulation characteristics and the necessary adjustment rate; Another method is to directly measure the reactive current deviation (Ik,) of each generator and then increase or decrease the generator excitation according to the size and symbol of Ik.
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