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NinoOil immersed transformer thermometerFailure cause analysis and improvement measures

Article author:Nino issuing time:2022/08/03 09:10:50 Reading:92

Power transformer is indispensable for power stations and substations, but we must pay attention to many problems in the whole process of applying power transformer.

7It is understood that in China, transformers have experienced the whole process of replacing many series products such as S. As early as the middle and late s, S Series lossless distribution transformers were selected in China to replace the high energy consumption transformers of jb- and jb - Specifications operating in the power network at that time. Since the th century, urban power grids have been transformed all over the country, and S series distribution transformers have been used to replace S Series. In recent years,Product display S and S commodities are gradually selected in large quantities in the transformation of urban and rural power networks in China,VaregumOil immersed transformer protectionDetailed interpretation and their full load loss is % - % less than that of S transformer.

lNino(III) dry type transformers of KVA and below can be installed on poles. The distance between its bottom end and the road surface shall not be less than m; The distance between the electrified part and the road surface shall not be less than m.

The cycle time of power-off cleaning and inspection shall be determined according to the surrounding environment and load conditions, generally from half a year to once a year;

ITrabzon SportsPower transformer is indispensable for power stations and substations, but we must pay attention to many problems in the whole process of applying power transformer.

FmSeveral detection methods for installing transformer

This is the example of power consumption engineering as power saving. The key reason is that the habitual calculation method ignores the copper loss.


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The step-up dry-type transformer refers to the instantaneous operation of voltage. At this stage, there are few manufacturers of dry-type transformer that can reasonably guarantee the instantaneous step-up in China. The step-up dry-type transformer has strong step-up capacity and good practical effect. The difference depends on that the transformer power switch without excitation regulator does not have the ability to change gear with load. Because this kind of tap power switch can cut off the whole process in a short time during the whole process of gear change, cutting off the load current will cause arc burning between circuit breakers, tap power on and off or short circuit fault, so the dry-type transformer shall be powered off during regulation. Therefore, it is generally used as a dry-type transformer that is not very strict in voltage regulation and does not need to be adjusted frequently.

cCauses of fire and explosion in power transformer

WAccording to statistics, commodity volume and voltage level. As early as & ldquo; Eleventh Five Year Plan; In the early stage the transformer industry depends on two key data,Product display China has been a powerful country in the production, manufacturing and application of dry-type transformers all over the world, but it is not a big country.

MsupplyIf the input of dry-type transformer is an alternating switching power supply, its output voltage is directly proportional to the coil turn ratio of the output input solenoid coil. If a rechargeable battery is used, because it is DC, add a circuit in the input power supply circuit to change it into a continuously changing voltage. In that way, the alternating DC current can be obtained at the output end.

mOThe secondary inductive equipment of the distribution station (such as transformer, voltage transformer, automobile relay, AC contactor,Product display etc.) operates normally. According to the AC current, the winding transformer core will send out a symmetrical rhythm and a certain tone & ldquo; Buzz,VaregumOil immersed transformer protectionDetailed interpretation buzz & rdquo; Sound. The operation staff of the transformer manufacturer should understand and grasp the characteristics of the noise. When the equipment has common faults there will be noise and even & ldquo; Crackle & rdquo; The charging and discharging sound can distinguish the generation and characteristics of common equipment faults according to the music law and sound transformation when everything is normal and abnormal.

Principle of step-up dry-type transformer: the step-up dry-type transformer is a component that correspondingly converts low communication AC voltage, large current flow and small characteristic impedance into high communication AC voltage, small current and large characteristic impedance. When there is an AC circuit in the original coil, the communication AC magnetic flux will be caused in the transformer core (or magnetic core), causing the magnetic induction voltage in the primary coil (or current).


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How is the quality level of dry-type transformer compared with foreign countries?

Encyclopedic knowledgefIn order to better avoid transmission overvoltage damage, a group of overvoltage maintenance high-voltage Arresters (such as ycs active zinc oxide high-voltage arresters) shall be refitted at the working voltage bus duct side of dry-type transformer.

LFor no-load impulse closing of transformer, pay attention to the following matters:

The rate of transformer is: n = P / pxo%, that is,Power transformer price: 1000KVA, 33kV, 25kV, power transformer, oil immersed transformer, dry-type transformer factory when the copper loss of transformer is equivalent to iron loss, the rate is very large. Therefore, the load of transformer is: = P / PK. Fully consider the active power loss caused by the transmission of reactive power in the system software during transformer operation. The load adjustment is: it can be seen from the calculation of load formula that the large rate of transformer does not occur when the load is full, Generally it is about %, we should select effective transformers according to the load condition and load, so as to make the transformer in the situation of economic development and achieve the goal of power saving.

pNinoThe transformer manufacturer will introduce the efficiency of the transformer to you

jAThere is a magnetic induction line crossing in the transformer core, which will cause induced electromotive force on the plan perpendicular to the magnetic induction line. Because this electric flow creates a closed loop to generate an electric field and forms a vortex, it is called vortex. The existence of vortex makes the transformer core hot and consumes kinetic energy. This kind of loss is called vortex loss.

The specific contents include eliminating the shortcomings found in the patrol inspection, cleaning the porcelain waterproof casing, removing and replacing the cracked or brittle leather pad, checking and tightening the nodes, checking and replacing the silica gel of the breathing mask, etc.

TAGSlabel:Product display

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