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柴油發(fā)電機(jī)組的機(jī)組類型應(yīng)該如何選擇? How to choose the type of diesel generator set?

作者:admin 瀏覽量:41 來(lái)源:本站 時(shí)間:2024-08-28 09:51:43

信息摘要:

沃爾沃柴油發(fā)電機(jī)、發(fā)電機(jī),柴油發(fā)電機(jī),柴油發(fā)電機(jī)組,發(fā)電機(jī)組廠家,進(jìn)口柴油發(fā)電機(jī),國(guó)產(chǎn)柴油發(fā)電機(jī)組,康明斯發(fā)電機(jī)組,玉柴發(fā)電機(jī)

柴油發(fā)電機(jī)組在生活中有著非常重要的作用,但是大家在選擇的時(shí)候還是不知道如何選擇適合自己的類型,今天就為大家詳細(xì)講解下柴油發(fā)電機(jī)組的幾種類型。
在選擇柴油發(fā)電機(jī)機(jī)組時(shí),考慮的因素主要有:機(jī)組的用途、機(jī)械與電氣性能、負(fù)荷的容量與變化范圍、機(jī)組的使用環(huán)境條件(包括海拔高度、氣候條件、噪聲)、自動(dòng)化功能等。由于柴油發(fā)電機(jī)組可用于常用、備用和應(yīng)急等3種情況,因此不同用途對(duì)柴油發(fā)電機(jī)組的要求就有所區(qū)別。
一、常用機(jī)組選擇
常用柴油發(fā)電機(jī)組是指在無(wú)市電情況下使用柴油發(fā)電機(jī)組做為主用電源。使用時(shí)間長(zhǎng)、機(jī)械損耗高、故障高。這種情況下建議最低配置應(yīng)為國(guó)產(chǎn)一線品牌柴油機(jī),也可以選擇合資、進(jìn)口品牌。
二、備用機(jī)組選擇
備用柴油發(fā)電機(jī)組是指市電基本正常,只有偶爾停電時(shí)做臨時(shí)發(fā)電使用。使用頻率不高、使用時(shí)間短、機(jī)械損耗低、故障低。這種情況下沒(méi)必要一味追求高端進(jìn)口柴油機(jī)配置的機(jī)組,一般國(guó)產(chǎn)柴油機(jī)配置的機(jī)組就能完全滿足使用。油耗、噪音、故障率、大修時(shí)間這些指標(biāo)沒(méi)必要考慮太多。
三、應(yīng)急機(jī)組選擇
應(yīng)急柴油發(fā)電機(jī)組一般宜選用高速、增壓、油耗低、同容量的柴油發(fā)電機(jī)組。高速增壓柴油機(jī)單機(jī)容量較大,占據(jù)空間??;柴油機(jī)選用配電子或液壓調(diào)速裝置,調(diào)速性能較好;發(fā)電機(jī)宜選用配無(wú)刷勵(lì)磁或相復(fù)勵(lì)裝置的同步電機(jī),較可靠,故障率低,維護(hù)檢修較方便。

與三相電動(dòng)機(jī)匹配需注意的問(wèn)題。柴油發(fā)電機(jī)組與三相電機(jī)容量選配時(shí),必須考慮到負(fù)載的啟動(dòng)電流。同時(shí)需要注意額定功率和后備功率的關(guān)系,KVA和KW的關(guān)系。KVA是視在功率,KW是有效功率,他們之間的關(guān)系為1KVA=0.8KW。進(jìn)口機(jī)組一般用KVA表示功率單位,而國(guó)內(nèi)用電設(shè)備一般都用KW表示。所以核算功率時(shí)應(yīng)把KVA打8折換算成KW。

Diesel generator sets play a very important role in daily life, but people still don't know how to choose the type that suits them. Today, we will explain in detail several types of diesel generator sets.

When choosing a diesel generator set, the main factors to consider include: the purpose of the set, mechanical and electrical performance, load capacity and variation range, environmental conditions for the use of the set (including altitude, climate conditions, noise), automation functions, etc. Due to the fact that diesel generator sets can be used in three situations: common, backup, and emergency, the requirements for diesel generator sets vary depending on their usage.

1、 Common Unit Selection

The commonly used diesel generator set refers to the use of a diesel generator set as the main power source in the absence of mains electricity. Long usage time, high mechanical wear and tear, and high failure rate. In this case, it is recommended that the minimum configuration should be a domestically produced first-line brand diesel engine, and joint venture or imported brands can also be chosen.

2、 Selection of standby units

A backup diesel generator set refers to a temporary power generation unit that operates normally with only occasional power outages. Low frequency of use, short usage time, low mechanical wear and tear, and low failure rate. In this case, there is no need to blindly pursue units with high-end imported diesel engine configurations. Generally, units with domestically produced diesel engine configurations can fully meet the needs of use. There is no need to consider too many indicators such as fuel consumption, noise, failure rate, and overhaul time.

3、 Emergency Unit Selection

Emergency diesel generator sets are generally recommended to use high-speed, turbocharged, low fuel consumption, and same capacity diesel generator sets. High speed turbocharged diesel engines have a larger single unit capacity and occupy less space; Diesel engines are equipped with electronic or hydraulic speed control devices, which have good speed control performance; Synchronous motors with brushless excitation or phase compound excitation devices should be selected for generators, which are more reliable, have a low failure rate, and are easier to maintain and repair.

Issues to be noted when matching with three-phase motors. When selecting the capacity of diesel generator sets and three-phase motors, the starting current of the load must be considered. Attention should also be paid to the relationship between rated power and backup power, as well as the relationship between KVA and KW. KVA is apparent power, KW is effective power, and their relationship is 1KVA=0.8KW. Imported power units are generally expressed in KVA, while domestic electrical equipment is generally expressed in KW. So when calculating power, KVA should be converted to KW at a 20% discount.


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