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柴油发电机组并机柜
点击: 次  发布时间:2015/8/7 23:26:32

柴油发电机组的最佳运行状态在机组带有70%到85%的负荷之间。如果发电机组长期连续运行在这个负荷范围之外,不仅会严重浪费能源,而且机组内部的燃烧废物增加,需要对机组更频繁的维护和保养。当电厂的负载大并且负载变化量较大,采用多台机组单独供电时,有的机组的负荷量很小,有的机组负荷量很大,为了启动电动机将发电机组加大容量但又使机组处于轻负荷状态,或机组出现故障时无法供电给负载。这样就存在能源浪费大、难管理、维护保养次数多,频率高,无法充分利用现有的资源。
    采用并机系统,对于单机供电有以下优点:
可以提高供电质量和容量,提高系统可靠性,增大直接启动异步电动机能力,系统运行灵活、负载分配合理、简化供电系统接线,使机组运行在经济负荷状态,降低运行费用和维护保养费用。
机组并机是指当多台发电机组运行时,将每台发电机组提供的电源连接汇合成单一电源给负载的过程。每台机组必须满足以下同相序、同电压、同频率和同相位四个条件才能安全无冲击的并入整个系统。
    将多台发电机组并机时注意的重要问题之一是适当的分配负载。负载由两个部分组成:有功功率(千瓦)和无功功率(千伏安),有功功率的分配是通过柴油机调速系统提供,无功功率由发电机的自动调压器来分配,考虑到实际设备调整范围,对两台并机机组间的容量差距不应超过2倍以上,即大容量机组功率不应超过2倍以上小容量机组功率。
    我司提供国际知名品牌(科迈、深海、凯讯)等全自动并机控制系统,能够保证机组并机的稳定性及安全性;降低机组无功消耗;为客户提供安全可靠稳定的应急电源。

Between the best running status of diesel generator set with 70% to 85% in the unit load. If the generating units of long-term continuous operation in the load range, not only a serious waste of energy, but also waste generator internal combustion increases, need maintenance and maintenance of the unit more frequently. When the plant load and load changes in the larger, use many units separate power supply, load some unit is very small, some unit load quantity is very large, in order to start the motor will increase the capacity of generating units but make the units in the light load state, or unit load can not supply appears to failure. There is a large energy wasting, difficult management, maintenance for many times, the frequency is high, cannot make full use of the existing resources.
By combining system, has the following advantages for single power supply:
Can improve the quality and capacity of the power supply, improves the reliability of the system, increase the ability of asynchronous motor direct starting, flexible operation, reasonable distribution system load, a simplified power system wiring, make the operation of the unit in the economic load condition, reduce operating costs and maintenance costs.
Units and machine is when running more generating units, the power supply of each generating unit connected merged into a single power supply to the load process. Each unit must meet the following the same phase sequence, the same into the system voltage, frequency and the same phase with the four conditions can be safe without impact.
One of the important problems that attention will be more generating units and machine is the appropriate distribution of load. The load is composed of two parts: active power (kw) and reactive power (Qian Fuan), distribution of active power is provided by a diesel engine speed regulation system, the reactive power by automatically adjustable generator voltage regulator to adjust the scope of distribution, taking into account the actual equipment, on two stations and machine group capacity gap between should be more than 2 times above, that the power of large capacity units should not exceed more than 2 times the small capacity power generating units.
Our company provide the international famous brand (Comay, deep sea, Kai) and other automatic machine control system, can guarantee the stability and safety of the unit and machine; reduce unit reactive power consumption; to provide emergency power supply safety and stable and reliable for the customer.


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