During the 3 1 year when our company was engaged in the research, development, production and sales of reactive power compensation equipment, customers often came to us to deal with similar problems, and it was very simple to deal with them. We've dealt with a lot. Like this:

For the special transformer of an enterprise, the power supply bureau now mostly adopts high-voltage measurement, that is to say, when measuring, the electricity meter not only measures the electricity consumption of your equipment, but also measures the transformer as a load.

Problems often encountered in high-voltage metering are: low power factor under light load, and inadequate compensation of reactive power compensation device on low-voltage side. The reason is that the compensation device is on the low voltage side, so the reactive power of the transformer can not be detected, and the reactive power demand of the transformer can not be compensated.

Treatment principle: compensate the reactive power demand of transformer.

Treatment method: there are two ways, just choose one.

1. There is a fixed capacitor on the high voltage side to compensate the reactive power of the transformer. This method requires the consent of the power supply bureau, and it is operated on the high voltage side, which requires higher requirements. The capacity of the fixed capacitor should be calculated according to the specifications and parameters of the transformer.

2. Forced compensation is carried out on the low voltage side. According to the actual situation of light load, the reactive power of transformer is compensated by overcompensation on the low voltage side. It can be realized by fixing the capacitor or adjusting the parameters of the compensation device. This method can calculate the capacity of this capacitor through transformer parameters, but we usually use field test. The calculation method is in the electrician manual. Please consult the cabinet manufacturer for the method of adjusting the working parameters of the compensation cabinet.

Either way, please be carried out by qualified power technicians or electricians, safety first!

Say a few more words:

It should be noted that if the light load state lasts for a long time and the transformer has a large capacity, it is easy to be fined. Please find the manufacturer to solve it as soon as possible.

In addition, because the technology of conventional compensation cabinets is very mature, and the components used in the cabinets are also very mature, a large number of small factories and even small electrical stores on the roadside dare to make compensation cabinets. This is a very fatal thing, because the mature technology of the industry does not mean that the technology and technology of the manufacturers are mature, and there is no need for fake components and materials. In particular, a large number of low-priced cottage compensation controllers are flooding the market, and the price looks attractive, but a fine is enough for you.

Improving power factor and reactive power compensation are energy-saving technologies advocated by the state, but they are very professional and need professionals to do it. More questions and information about reactive power compensation and power factor. Can be found and discussed here. There are a group of retired electrician old men, who have all studied in college, but they are all willing to help young people.