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变压器超负荷运行的解决办法?

1.应该适当减少负载。2.检测一下功率因数是否较低(最好在0.95以上,不能低于0.8),如较低应并联适当容量电容补偿。3.检测一下三相负载是否平衡,应使三相电流平衡运行。4.检测一下电源电压是否过高,适当调整电压使电压在400V以下
1., the load should be reduced appropriately. 2., check whether the power factor is lower (preferably over 0.95, not less than 0.8), such as lower capacity should be connected in parallel with appropriate capacitance compensation. 3. to check whether the three-phase load is balanced, the three-phase current should be balanced. 4. check whether the power supply voltage is too high and adjust the voltage properly so that the voltage is below 400V
山东变压器http://www.jnwdsh.com/保护装置是集保护、监视、控制、通信等多种功能于一体的电力自动化高新技术产品,是构成智能化开关柜的理想电器单元。
Transformer protection device is a kind of power automation hi tech product which integrates protection, monitoring, control, communication and other functions. It is an ideal electric unit for intelligent switch cabinet.
运行原理变压器差动保护装置是变压器的主保护,是按循环电流原理装设的。 主要用来保护双绕组或三绕组变压器绕组内部及其引出线上发生的各种相间短路故障,同时也可以用来保护变压器单相匝间短路故障。
Operation principle transformer differential protection device is the main protection of transformer, which is installed according to the principle of circulating current. Mainly used to protect double winding or three winding transformer winding internal and its lead out of the line with various inter phase short-circuit fault, but also can be used to protect the transformer single-phase inter turn short circuit fault.
一、那么为什么变压器铁芯接地又只能是只有一点接地呢?
First, then why is the grounding of transformer core only one point grounding?
因为,一但有两点以上的接地时,两点间或者多点间形成短接的回路,等于通过接地片短接了铁芯柱,短接回路中形成感应环流,使得铁芯局部过热烧坏片间绝缘,也可能造成对油箱壁放电,直至绝缘击穿而烧坏变压器。
山东变压器
Because a, but there are two points above the ground, shorted loop is formed between two or more points, the grounding piece shorted the core column, forming a short loop induction circulation, the core of local overheating burned patch insulation, may also be caused by the discharge of the tank wall, straight to insulation breakdown burn out the transformer.
二、引起变压器铁芯接地的原因:
Two, cause the transformer core grounding:
1、制造时接地片没做好而造成硅钢片短路,或者本身没有做好铁件和铁芯的绝缘处理,有工具或导电体遗留在了铁芯处或油箱内。
1, when the grounding piece is not made, the silicon steel sheet is short circuited, or the insulation of the iron piece and the iron core is not processed in itself, and the tool or the conductor is left behind in the iron core or in the oil tank.
2、由于外界和附件的因素造成多点接地,一般有:
2, because of the external and accessories factors cause multi-point grounding, usually there:
⑴在检修或变压器装配时,由于不注意或检修时个别附件超长、歪斜、擦边等,造成铁芯碰壳体,碰夹件,铁芯夹板碰铁芯柱,硅钢片翘出碰夹板,铁芯下夹件垫脚与硅钢片碰触,温度计过长碰铁芯等。
In the repair or transformer assembly, due to lack of attention or maintenance of individual attachment length, skew, edge, core shell caused by touch, touch clamps, core splint touch iron core columns, steel sheet forming with iron core clamping piece splint, stepping with silicon touch, touch and other core thermometer is too long.
⑵穿钉螺栓过长与硅钢片或箱体短、搭接。
The nail is too long and the silicon steel sheet or bolt body, short lap.
⑶油箱内进入异物或水使硅钢片局部短路。
Enter the water tank to the foreign or local short circuit of silicon steel sheet.
⑷铁芯绝缘受潮或损伤、箱底沉积淤泥和水份、木块受潮使得绝缘下降,形成有阻接地。
The core insulation damp or damage, the silt and water, wood makes damp down insulation, forming a resistance grounding.
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