What is the reason why the power factor of the reactive power compensator is too low?

If you are using an automatic reactive power compensator, you can see if the capacitance compensation display is fully invested when the power factor is used, if not, the compensator is broken, or the compensator parameter setting is wrong.

If the compensator indicator shows that there is full input, it is a problem with the main compensation loop, and the following may be for reference:

1. The power fuse is damaged.

2. The contactor is damaged (pay attention to whether there is a lack of phase).

3. Compensate for capacitance aging (pay attention to the contrast current).

I don't know what brand of reactive power compensator you use, if there are still only two sets of outputs at such a low power factor, it should be a problem with the compensator, in terms of parameters, it is generally necessary to pay attention to whether it is set in automatic mode, whether the number of co-capacitance groups is set correctly, if it is set to two groups, it can only be put into two groups at most, and whether the capacitance value is set correctly, if it is wrong, it will affect its calculation results, thereby affecting the output, and the target power factor can be set as large as possible If it's okay with the settings, it's broken.

However, since you said that the last month was good, if no one has touched the parameters, it may be that the compensator is broken.

Reactive power compensator is a kind of compensation device, which plays a role in the electronic power supply system to improve the power factor of the power grid, reduce the loss of power supply transformer and transmission line, improve power supply efficiency, and improve the power supply environment. Therefore, the reactive power compensation device is in an indispensable and very important position in the power supply system. Reasonable selection of compensation devices can minimize the loss of the network and improve the quality of the power grid.

On the contrary, if the selection or use is improper, it may cause many factors such as power supply system, voltage fluctuations, harmonic increases, etc.

The power factor is expressed in cos, which represents the proportion of active power in the path. When cos = 1, there is no reactive power loss in the line. Improving the power factor to reduce reactive power losses is the ultimate goal of this type of controller.

This control method is also a very traditional way, and sampling and control are also relatively easy to implement. *"Time delay"The delay time of setting and switching should be adjusted in the range of 10s-120s"Sensitivity"Tuning, current sensitivity, not more than 0-2A. The power factor of input and excision threshold setting should be within the range of hysteresis (ahead).

Overvoltage protection setting * Display setting, cyclic switching and other functions This sampling method should not only ensure the stability of the line system and no oscillation phenomenon in operation, but also take into account the compensation effect, which is a pair of contradictions, and can only work in a better state according to the specific situation of the parameter setting on the spot. Even if the adjustment is good, it will not be able to make up for the defects of this method itself, especially when the road is heavily loaded. For example:

set input thresholds; COS = hysteresis) At this time, the line is heavily loaded, even if the reactive power loss at this time is very large, the capacitor bank will not be compensated again, but as long as the COS is not less, the controller will no longer have compensation instructions, and there will be no capacitor bank input.

Reactive power compensation is generally designed to compensate the power factor to.

Many electrical equipment works according to the principle of electromagnetic induction, such as distribution transformers, motors, etc., which rely on the establishment of alternating magnetic fields to convert and transfer energy. The electrical power required to establish an alternating magnetic field and induced magnetic flux is known as reactive power. When transmitting the same capacity of active power, if the less reactive power is transmitted (the larger the power angle), then the current will also be smaller, and the loss on the transmission line will be smaller.

The regulations of the power supply departments are different in different places.

The power factor of industrial users of general high-voltage power supply and power users equipped with load adjustment voltage devices for high-voltage power supply is above and above, and the power factor of other power users of 100kva (kW) and above and large and medium-sized power drainage and irrigation stations is above and above, and the power factor of agricultural electricity consumption is above and above.

Hello dear, <>

First of all, look at the relationship between reactive power and power factor. Reactive power, local power power, and apparent power concealment rate meet the relationship of power triangle. According to the power factor = p s.

In the power triangle, we can see that in the case of the constant power of the stove, the larger the reactive power and the smaller the active power, the smaller the power factor and the lower the power factor. I hope my answer is helpful to you, and I wish you good health and a happy mood! <>

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Summary. Dear We are very happy to answer your <> one-on-one

<>1. In general, the reactive power compensation power factor should be 1, that is, the reactive power compensation equipment should be able to fully compensate the reactive power in the circuit. 2. However, due to the high cost of reactive power compensation equipment, in some cases, in order to reduce costs, the power factor of reactive power compensation equipment will be set to. In this case, although the reactive power is not fully compensated, it can still effectively improve the power factor of the circuit, thereby reducing the electricity cost of the circuit.

Is the reactive power compensation power factor normal and why.

Dear We are very happy to answer your <> one-on-one

<>1. In general, the reactive power compensation power factor should be 1, that is, the reactive power compensation equipment should be able to fully compensate the reactive power in the circuit. 2. However, due to the high cost of reactive power compensation equipment, in some cases, in order to reduce costs, the power source mountain factor of reactive power compensation equipment will be set. In this case, although the reactive power is not fully compensated, the power factor of the circuit can still be effectively improved, thereby reducing the electricity cost of the middle circuit.

3. Therefore, it is normal for the reactive power compensation power factor to be to a certain extent, but if the power factor of the circuit is required to reach a higher level, more reactive power compensation equipment needs to be installed, so as to improve the reactive power compensation power factor.

1. Because when the power factor is lower, the compensation delay resistance effect of the reactive power per mu will deteriorate, and it will also increase the burden on the power grid. Therefore, the reactive power compensation power factor is in line with the requirements.

Supplement: 1. The power system and load characteristics of different calls are different, and the capacity and power factor of reactive power compensation need to be determined according to the specific situation. 2. At the same time, the power factor is also the minimum requirement stipulated by the State Grid Corporation of China, which meets the national standards.

However, if the power factor is too low, it will lead to problems such as reduced grid voltage, increased line loss, and short chain traces of equipment life shrinkage, so it is still necessary to chain and improve the power factor as much as possible.

Hello dear, <>The above is a detailed answer to the question of whether the reactive power compensation power factor is normal, and I hope mine can help you to tease the banquet. <>

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