Small diesel generator quality excellence grasp the opportunity to purchase
Small diesel generator is a small power generation equipment, the system refers to the diesel and other fuels, diesel engine as the prime mover to drive the power generation of power machinery. The small diesel generating units refer to their power is relatively low, usually refers to the power of less than 10kW generating units.
Regulating characteristics
1 voltage regulation and frequency regulation is different: in a system, the numerical frequency regardless of geography is the same, the balance of power balance is the active power of the whole system; and the voltage level in different electricity in the area is not uniform, the reactive power balance is mainly in different regions in the balance ability voltage regulation and power plant is only a little less than the surrounding area.
More than 2 sets of parallel operation of generator units, to adjust with the above method, the system frequency and voltage is not significant, the main is to adjust the load distribution between units, especially small units in the system, the output size does not occur substantial influence on voltage and frequency, according to needs to adjust the unit. So the regulation of small generators connected to the grid is much simpler.
3 maintain the active power output of generator at constant reactive power output and power factor can be changed to change the excitation generator; excitation current is kept constant, increasing the output power, the reactive power output of generator will decrease, for the lower excitation must be increased accordingly.
Low power factor operation, will increase the burden of excitation system, in order not to exceed the full load rated conditions of the excitation current, the generator output (kW and Qian Fuan) should be limited. In order to ensure the stable operation of the generator motor, keep parallel between certain stable margin control to avoid excitation generator, phase advance operation, not to reduce the excitation current is too small, but also to take measures to prevent the loss of excitation.
4 excitation system not only has a very important role in the operation of the generator, but also in the structure is the most weak and most of the fault rate of the site. Therefore, in order to ensure the safety of power generation, we must pay enough attention to the excitation system. After the shutdown and to carry out the necessary checks on the pre boot, especially brushgear coaxial exciter, to check the brush, brush and commutator surface technology status, should also be purged when necessary; operation should always check the brush without fire and beat; strengthen the excitation system, check repair and maintenance. This is one of the important means to prevent the generator fault.
Another feature of the 5 small diesel generator is the idea that day, for once". Therefore, when idle, it is likely to be affected with damp conditions. The most active preventive measure is to prevent moisture from the insulation of the winding. In the field, such as the generator can make the internal temperature of 5 - 10C, is an effective way to moisture. If already damp, the insulation is not qualified, must not be applied to the motor voltage and must first dry. In addition, the implementation of the generator on a regular (usually two times a month, but also pay attention to the operation of 300 hours and six months after the overhaul), the test run system is also a common method to ensure that the unit is in good condition.
