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发电机组与低压配电柜智能断路器不互投的原因?

2013/4/30 16:29:56

两台变压器都带发电机是GCK柜体还带联络柜要怎么切换?

两路进线柜和中间的联络柜有电器连锁!也就是这三台柜子断路器只能同时合闸2个!
就是两路进线同时工作中间的联络就不能合闸,合闸一路进线时中间的联络可以合闸,但是第二路进线就不能合闸

东风康明斯发动机怎么增加动力?

想要增加发动机的马力,在增加油泵供油量的同时也要增加空气量。加装增压机,为了增加氧气的密度还要加装中冷器。只有这样才能增加发动机的动力。

康明斯发动机冷却液的温度太低是怎么回事?

看看是不是表不准,或是水温传感器有毛病,要是电子风扇的话,看看风扇是不是长转,再有你的车节温器摘没摘下去

康明斯动力换热器的故障维修?

发电机组与低压配电柜智能断路器不互投?

有专门解决双路电源的安全转换的空开和辅助控制装置。发电机和外网的逻辑控制及安全切换,实际上分立元件自己搭也可以,只不过避免并联的影响和事故。简单的外网无可启动发电机,外网来电需要发电机停后主回路切换,外网和发电机都有时电能的指定切换,实际上电控双投开关和手动双投刀闸或回路都可以实现。有的系统切换只是部分不能停电的负荷转换,

怎么样柴油发电机改装成全自动的?

在配电房加ATS控制柜,在发电机组上改装智能控制屏,两个加起来就可以实现柴油发电机全自动控制了!

发电机并列时智能同期切换装置的作用是什么?

智能同期装置作用是控制发电机并列用的,它有手动、自动、半自动切换方式,还有同期和无压两种状况选择,功能强大,它通过比较系统电压、频率与发电机电压、频率,发出信号使机端开关两侧参数达到允许并网条件,然后自动扑捉相位达到快速并网

发电机的自同期并列对电力系统的事故处理有没有好处?

有一点好处。发电机自同期并列比原始的手动并列加快了并网的速度,当电力系统发生震荡需要一些发电机尽快投入电网,以消除震荡时,自同期比手动同期快的多了。
发电机双电源切换装置和连锁保护功能每个发电机都有吗?

一般柴油发电机及其控制箱是没有此功能的,你说的功能只有双电源切换柜才有。

几台发电机并联运行并不上是什么回事?

一、主要是并列的条件不满足
1、相序相同-就是A\B\C对A\B\C-当然安装时已经对应,这个在运行中不做考虑。
2、电压相等
3、频率相等
4、相位相同
  看你的装置设置,调出同期参数数值,检查数值设定值是否太小, 检查四个条件是否满足要求。
二、其它原因:
    1、调速器设置不当-调速器无扰动,频率相等但相位始终不同。
    2、发电机监控器故障-检查电源、信号输入、控制输出、通讯等
    3、开关控制电源及合闸电源应正常。
为什么发电机组不能长时间低转速运行?

三相四线中,零线发热是什么原因。可以解决吗?

零线电流过大首先三相负荷是否平衡。尽量平衡三相负载。其次零线是否小的太离谱。

发电机励磁系统接地现象的原因?

励磁回路两点接地现象:
①励磁电流迅速增大,无功输出大幅度降低,“转子过流”保护可能动作 ,“转子两地接地”信号亮。
②发电机转子电压可能降低。
③机组发生较大振动,发电机可能变为异步电动机运行。

发电机转子绕组两点接地故障有哪些危害?
①发电机转子绕组两点接地后,相当于一部分绕组短路,两个接地点之间有故障电流流过,它可能引起线圈燃烧和由于磁路不平衡引起发电机剧烈振动;
②转子电流流过转子本体,如果电流大可能烧坏转子铁芯
③由于转子本体局部通过电流,引起局部发热,使转子缓慢变形而偏心,进一步加剧振动。
一点接地时,由于不构成回路,故障点无电流流过,可以运行,保护发信号,防止发展成两点接地。
两点接地时,两接地点直接相当于短路,两短路点之间有很大短路电流流过,造成转子电流增大,而励磁电流却减小,因此无功降低

Two transformers are driven generator houndreds types product as like GCK ark cabinet put oneself in another's position with contact how to switch?

Two ark of road into a line contact in the middle of the cabinet have electrical appliances chain! Is this three circuit breaker cabinet can switch two at a time!

Is the middle of the road into two lines at the same time work contact can not switch, switch can switch among all the way into the line of contact, but the first 2 will not be able to switch into the line

Dongfeng cummins engine how to increase the power?

Want to increase engine power, while boosting pump oil should also increase air volume. Equipped with booster, in order to increase the density of oxygen and installing intercoolers. Only in this way can increase the engine power.

Cummins engine cooling fluid temperature is too low, how be to return a responsibility?

See if table is not allowed, or there is something wrong with water temperature sensor, electronic fan, see if fan long turn, have your car thermostat pick didn't pick it

Cummins power exchanger breakdown maintenance?

Generator sets and low voltage power distribution ark intelligent circuit breaker is not for each other?

Have specific solution to the dual power supply safety transformation of air and auxiliary control unit. Logic control and safety of the generator and the network switch, actually can also be discrete component himself, just avoid in parallel and the influence of the accident. Simple outer net start generators, network calls need generator stop after circuit switching, all network and generators are sometimes designated switch of electric power and electric control actually double throw switch and double knife switches or loop can achieve manually. Some system switching is only partly not power load conversion,

How about diesel generator into a fully automatic?

In the transformer room and ATS control cabinet, control panel on the generator set refitted intelligence, two together can realize automatic control of the diesel generator!

Generator and what is the function of intelligent switching device during this period?

Smart device function is to control the generator tied for use during this period, it has a manual, automatic, semi-automatic switch mode, and in the same period and pressureless choose two kinds of condition, powerful functions, it by comparing the system voltage, frequency, and the generator voltage, frequency, sends a signal to make the machine side switch on both sides of the parameters to allow the interconnection conditions, then automatically capture phase to achieve quick interconnection

Generator's from the same period of power system accident treatment benefits?

There is a little good. Juxtaposed with the generator from the same period than the original manual tied to speed up the speed of interconnection, when need some oscillation generator power system input grid, as soon as possible to eliminate the oscillation, much faster than the same period manually since the same period.

Generator double power switching device and chain protection function each generator has?

Diesel generator and its control box is generally don't have this function, you said function is only available in the ats switch cabinet.

Several generator in parallel operation is not on what is going on?

A, mainly coordinate condition not satisfied

1, the phase sequence is the same - A \ B of A \ B \ \ C C - have corresponding when installation, of course, this do not consider in the run.

2, the voltage is equal to

3, frequency equal to the

4, same phase

See your device Settings, bring up the parameter values at the same period, and check whether the numerical value is too small, check if four conditions meet the requirements.

Other reasons:

1, speed governor governor Settings - no disturbance, frequency but different phase always equal.

2, generator fault monitor - check the power supply, signal input and output control, communications, etc

3, switch power supply and switching power supply should be normal.

Why can't a generating set run low speed for a long time?

Three phase four line, zero line heating is what reason. Can solve?

If zero line current is too large, first of all, the three-phase load balancing. Try to balance the three phase load. Second zero line is little far off the mark.

Generator excitation system earthing phenomenon reason?

Two-point grounding phenomenon of excitation loop:

(1) field current increases rapidly, reduce reactive power output, "the rotor over current protection possible action," dual rotor grounding "signal light.

(2) may reduce the rotor of the generator voltage.

(3) units are great vibration, generators can be run into asynchronous motor.

Generator rotor winding two points earth fault what harm is there?

(1) after the generator rotor winding two-point grounding, equivalent to part of the winding short circuit, two ground fault current flows through between the two, it may cause burning coil and intense vibration caused by the unbalance of the magnetic generator;

(2) the rotor current flow through the rotor body, if the current big may burn out the rotor iron core

(3) local by current due to the rotor body, cause local fever, slow rotor deformation and eccentricity, intensified vibration.

One-point earthing, because do not constitute a circuit, no current flows through the fault point, can run, signal protection, prevent into two-point grounding.

Two-point grounding, two ground directly equivalent to short circuit, there is a lot of short circuit between two short-circuit point of current to flow through, causing rotor current increases, and the exciting current is reduced, so the reactive power is reduced

 

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