Seek help! Understand the progress of reactive power compensation .

I think the biggest possibility is the harmonic problem and the voltage resistance value of the thyristor product itself.

Because the thyristor is a non-contact switching switch, it has relatively high requirements for voltage, and secondly, the thyristor itself is also a harmonic source, and at the same time, the welding machine will produce a large number of 3rd harmonics. It is best to find a professional manufacturer to measure.

I think it's overcompensated, you have to tell if what you said about connecting is capacitive or not, if it is, it's overcompensated.

Electric welding machine, tower crane are rapidly changing load, and is also a nonlinear load, but also the main harmonic source, I don't know if your reactive power compensation device is pure capacitance or series reactance, if it is a pure capacitance of this situation is easy to understand, I suggest you use a professional instrument to test it, with data to analyze whether this is the reason. You can call Nokia Capacitors and we will provide you with this service. And give you the complete solution.

If it is a thyristor switching should be the consequence of the wave of the wave, the silicon according to the power factor of the grid non-stop switching capacitor compensation to ensure the power factor of the grid, the wave inrush current in the thyristor semi-off and half-open state is the most likely to be damaged, you can open your thyristor analysis, it should be the phenomenon of current burning!

What you said, it should be to it, ahead, when the thyristor is broken down because of the inrush current generated by the capacitor at the moment of disconnection, if it is a pure thyristor switching regulator, it is caused by harmonics in the power grid, welding machine, driving, is the most likely to produce harmonic equipment,

Theoretically, it is.

However, in the case of reactive power compensation, the current compensation methods are compensated according to the demand of reactive power, which is the most common and relatively accurate way of compensation.

First of all, the reactive power compensation controller is used to judge whether compensation is required, and the compensation capacity and the most reasonable compensation loop are calculated by the automatic compensation controller, and then the compensation capacitance circuit is put into or cut off through the switching switch.

For example, if your cabinet now has 12 circuits, assuming that each circuit is an equal capacitance of 30kvar, the maximum is to compensate for the capacity of 360kvar.

In fact, whether it is calculating current or reactive power, it is ultimately reflected in the power factor, and the power supply bureau determines your adjustment electricity tariff coefficient according to the power factor.

Hebei Vauban team, professional reactive power compensation team, hope to help you, remember to adopt, hehe.

Hehe, a common situation: when the power supply bureau tells you that your power factor is not up to standard, you have been fined. You're planning to buy a compensation device.

Not much: because the power supply line is too long, the voltage of the terminal equipment is too low, resulting in poor equipment work (such as difficult motor starting, etc.), the terminal voltage can be increased by compensation.

When the power factor is too small, it is generally less than that, and reactive power compensation should be added.

The national rules for power supply and consumption stipulate that industrial users with high-voltage power supply and high-voltage power supply equipped with load adjustment voltage devices shall have a power factor of more than that; Other power users of 100 kVA and above and large and medium-sized power drainage and irrigation stations, with a power factor of more than that; For agricultural electricity, the power factor is above .

Use the ABB brand.

CLMD capacitors.

OT disconnector.

XLP fuse.

Contactor for UA capacitors.

The best way to improve this fault is to set the c k value to be larger than the calculated value when setting the parameters, and it will be better to set the time to 120 seconds in the re-entry delay position. The so-called ** refers to the controller seeking the balance point of the target power factor when controlling the capacitor switching, resulting in frequent removal and input of the capacitor bank. In addition to the reasons for setting the parameters mentioned above, there is also a reason for the fact that the capacitor selected in the single section is larger, resulting in overcompensation after input, and the power factor cannot be reached when it is not invested.

Prompt, when the controller is set, restart the controller to eliminate the alarm, the elimination method is to press and hold the up arrow key to know the location of the alarm disappearing. Then the controller works normally.

I'm sorry, but I'm not very clear about the specific settings. You can directly inquire about Schneider's after-sales service in terms of reactive power compensation.

With a meter that specifically measures electrical work, you can see the active and reactive power, and then calculate the power factor.

Reactive power compensation, referred to as reactive power compensation, plays a role in improving the power factor of the power grid in the electronic power supply system, reducing the loss of power supply transformers and transmission lines, improving power supply efficiency and improving 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.

Reactive power compensation is used to improve the quality of the voltage, so as to increase the power factor, which is used by the power grid to save energy.

One of the measures. The reactive power compensation method commonly used in the distribution network is: in the part of the system, in the distribution station, in each user.

It is necessary to install a reactive power compensation device; In the high and low voltage distribution lines, it is necessary to install parallel capacitor units in a decentralized manner; transformer voltage in the distribution of electricity.

Install shunt capacitors between the low-voltage side of the machine and the distribution panel in the workshop and the shunt capacitors installed near a single motor.

Perform more centralized or decentralized in-situ compensation.

The power load in the power grid, such as motors, transformers, CNC woodworking lathes, etc., most of them belong to inductive reactance and are in operation.

In the process, it is necessary to provide more corresponding reactive power to these devices. Install shunt capacitors and synchronous regulation in the power grid.

After capacitive equipment such as cameras, part of the reactive power consumed by the inductive reactance is supplied to the inductive load.

Reactive power. It can also reduce the flow of reactive power in the grid, so it can reduce the transmission line caused by the transmission of reactive power.

to improve the operating conditions of the power grid. This practice is called reactive power compensation.

Usually it is a mixed load, so that when the current passes through them, some of the electrical energy will not do work, that is.

Reactive power, the power factor at this time is less than 1, in order to improve the utilization rate of electric energy, it is necessary to compensate for reactive power.

Oh, if you want to do reactive power compensation, you only need to install compensation equipment.

The "compensation equipment" here contains many modes of things: capacitor cabinets, phase-modulated generators, reactive power generators, and so on for low-voltage compensation in common industrial enterprises; Local compensation device for large motor; Compensation for small motors Direct capacitors; ......

So it depends on what exactly your needs are? Where is it used? What is the voltage level? How large the load capacity is, etc., in order to give a specific compensation equipment recommendation.

You can add a capacitor bank to compensate, the specific number of capacitor groups and its capacity can be checked by a formula to search on the Internet You can also use a static reactive power compensator, TSC, if it is a small circuit, just use the capacitor directly, and calculate the capacitance value according to the power factor to be compensated

Hello, the following measures need to be taken for reactive power compensation in the power system: First, the synchronous condenser belongs to the typical representative of the early reactive power compensation device, which can not only compensate the fixed reactive power, but also dynamically compensate the changing reactive power. Second, it is not equipped with the most widely used reactive power compensation device in the field of parallel capacitive power compensation.

However, capacitance compensation can only supplement the fixed reactive capacitance. The gas compensation method still belongs to a kind of emergency reactive power regulation, which cannot realize the smooth and stepless adjustment of reactive power. At present, the capacity of the reactor used by the three-parallel reactor is fixed, which is used to suppress the overvoltage in addition to absorbing the capacitive load of the system.

FYI. If single-phase reactive power is compensated, a single-phase capacitor should be used, and the reactive power compensation controller needs to be of the subcompensating type. Depending on the load change, choose a reasonable switching switch, such as a contactor, a composite switch or a thyristor switch. Relevant technologies need to contact professional manufacturers for special formulation for reference.

Question: How do you look at the 2200 watt single motor to start well when the voltage is low?

Is there a professional manufacturer**?

You can call the service of Taizhou Liwei Power Technology********. 4006141905。or 057684871773. FYI.

The main thing is to install compensation equipment or compensation modules.

Commonly used are capacitance compensation and dynamic compensation.

The dynamic compensation is better than the phase feeder of Hubei Fengling.

Phase feeder compensation is based on changes in the load on the motor.

If the load torque:

There is high-voltage and low-voltage dynamic compensation (variable load phase inlet).

This compensation is generally done in situ.

If the load is constant:

A general capacitor compensation cabinet can be used.

Hope it helps.

Compensating equipment is essentially a parallel capacitor on the grid, but there is a lot of knowledge in it.