Which manufacturer is better for intelligent reactive power compensation? 5

Okay, there are some top brands, such as, Nokia, imported ABB (real ABB), Siemens, Cooper, GE, Acfa; Domestic, Schneider, EPCOS, Domestic ABB, Xirong, Guirong, etc.

Smart, of course. It's just the advancement of technology. Nowadays, automatic cutting devices are very common.

If it is only for high and low voltage reactive power compensation, it is like Chongqing Musen, Hangzhou Silver Fox. These two are better. Good after-sales and service.

If you're going to buy a more premium one. svc ,svg .These are the Beijing Electric Power Research Institute.

Rongxin. There is also Siyuan. It seems that Chongqing Musen has also started to do it now.

I've always searched for answers, and I can't help but bubble up today.

The problem you encountered is the same as mine, I am also the first time to contact the intelligent type, I used to use the old-fashioned, and the compensation effect is not bad, but the intelligent wiring is indeed more convenient, space-saving, and very beautiful.

I have only one project that has used the intelligent one, which needs to realize three-phase co-complementation, and the random compensation method used is the centralized compensation method when I used the old-fashioned one. After using it, I feel that the compensation effect is good.

I chose the Nantong Fujite recommended by the design institute, the model is fst-emzs(s) and fst-emzs(s), because I haven't used other homes, but in terms of current use and after-sales, it's still good.

It should be a trend to adopt intelligent in the future, and I am personally more interested in having a reactance function, but I don't understand it very well, and it is being studied.

This market is indeed more complicated, as the previous brothers said, there are imported and domestic; Some are called smart capacitors, and some are called reactive power compensation intelligent modules; There are split and integrated ones.

**It is also very different: the domestic ones are cheaper, the foreign ones are more expensive, and they are generally priced according to the size of the compensation capacity.

Therefore, if you don't list the conditions, it is indeed more difficult to simply say who is better.

Let's put it this way, the cost performance of domestic production is relatively high, in the domestic market, it seems that there are many manufacturers, in fact, many of them are OEM production, relatively large manufacturers are concentrated in Jiangsu, electrical concentration camps.

You can't sell melons and boast about it, it is recommended that you understand it this way:

1. Enterprise history: industrial supplies, the use and service cycle is long, and the enterprise needs to be engaged in the industry for a long time. So see which enterprises have a long history (except for state-owned enterprises). Being able to survive for a long time shows that the user is recognized.

2. Industry experience: As long as you concentrate on the industry for a long time, products and services can be guaranteed. So see if the business has been in the industry for a long time.

3. User word-of-mouth: This is the best proof that 10,000 advertisements are not as good as users' top words.

4. Others: whether it is a participant in standard formulation, the technical qualification, quality qualification, management qualification, etc.

When our company built a new plant, the low-voltage compensation seems to be used The WKS05 intelligent integrated module produced by Changsha Shengtai Electric Power Automation Technology is relatively good in quality and after-sales!

Shamen Schwitt SWT intelligent reactive power compensation, easy to use.

Nokia is definitely a leader in this industry, but it is too high.

Don't want to say, are you the boss or the head of the electrical?

It is the boss who buys TDS, and the electrical person in charge can buy a cheap plus point**.

Reactive power compensation is suitable for factories or large-capacity loads and users with long lines, although the reactive energy of the power grid is not charged, but excessive current through the line will increase the line loss of electricity, therefore, the use of reactive power compensation can provide the reactive energy consumption of the load, thereby reducing the part of the reactive energy transmitted by the power grid, reducing the line loss, and achieving the effect of saving money.

It has no effect on the general small-capacity electricity users and household electricity users, but may reverse the power supply network due to the excess reactive current of reactive power compensation, which will increase the line loss (the line short loss is not large), and the increase in electricity consumption is costly.

Reactive power compensation can improve power quality, reduce power loss, and reduce user electricity expenses, which is a fast, effective and low-cost energy-saving measure.

The common reactive power compensation methods in the distribution network are: installing reactive power compensation devices in the system part change, distribution station and each user; The shunt capacitor units are scattered on the high and low voltage distribution lines; Shunt capacitors are installed on the low-voltage side of the voltage distributor and on the workshop distribution screen, and shunt capacitors are installed near a single motor for centralized or decentralized on-site compensation.

Centralized compensation. The reactive power compensation of the substation is mainly to compensate the demand of the main variable for the reactive variable. Considering the reactive power trend of the power supply zone and the reactive power compensation of distribution users and users, the 35kV substation is generally determined by 10% 15% of the main transformer capacity, and the 110kV substation is determined by 15% and 20% of the main transformer capacity.

Dispersion compensation. When the user terminal is far away from the main transformer, it is suitable to install a decentralized compensation device at the power supply terminal. Combined with the low voltage compensation at the user side, the line loss is greatly reduced and the terminal voltage is increased.

In-situ compensation. High-power electrical equipment or large motors are suitable for installing local compensation devices, which are simple, efficient and economical. In this way, the capacitor is directly connected to the electrical equipment, and the series fuse is added in the middle to protect it, and the capacitor is put into the electrical equipment together, and it is cut off at the same time when it is removed, so as to realize the convenient automatic compensation of reactive power.

In an AC system, there is an inevitable phase conversion between electricity and magnetism. It is called reactive power. Although the electrical DAO magnetic conversion itself does not consume additional work efficiency, it is a conversion process, and the resistance of the wire system will dissipate the current generated by the mutual conversion and become heat.

Therefore, in order to minimize the reactive power of this inevitable electromagnetic mutual conversion, the components added to the circuit are called reactive power compensators.

Capacitive circuitry, plus inductor.

There are many inductive circuits in the factory, and capacitors are usually added.

Reactive power compensators are added to reduce the power loss of the circuit caused by inductive loads or capacitive loads that cause the current and voltage phases to be out of sync, which in turn leads to circuit power losses. Generally, factory equipment such as motors are mostly inductive loads, and in order to offset them, compensation capacitors are usually added.

Compensate for energy and improve efficiency factor.

The function of reactive power compensation in the circuit is to do reactive power compensation. The value of its embodiment lies in:

1: Improving the power factor This may involve the power supply bureau's electricity tariff reward and punishment system.

2: Reduce the current of the grid and effectively extend the service life of the equipment.

3: Reduce power grid loss and effectively extend the service life of equipment.

4: Increasing the voltage of the power grid is helpful for the unstable operation of some equipment under voltage.

5: Increase the use margin of the transformer The utilization rate of the transformer can be effectively reduced, so that the transformer **.

At present, most enterprises choose power capacitor strings with different reactors to do reactive power compensation, because the general power system is inductive, and the power factor is low, while the capacitor is capacitive, which can output capacitive current, so that the power factor of the system is improved. So as to achieve the above effect.

The main role is to improve the quality of power consumption and reduce losses. This is reflected in the power factor. That is to say, the electricity generated by the power plant is sent to the power grid, if the reactive power is too much, the electricity will be consumed with the reactive power, and the reactive power is not charged for electricity, so the power supply department has formulated rewards and punishments according to these, that is, the power adjustment fee.

Set reactive power compensation to offset the reactive power and improve the power factor.

The reactive power compensation device is generally selected for capacitor compensation, and the reactive power compensation equipment size can be selected according to your load size, and also needs to be selected according to the reactive power consumption of the actual electrical equipment.

The reactive power intelligent compensator adjusts the low voltage.

and high pressure

Low voltage: 1. After connecting the sampling current and voltage signals, check that there is no short circuit between the phase and the answer phase of the main circuit and the phase and the ground, and send the main power supply and the controller power supply.

2. Set the controller parameters, and detect the wiring and operation of each control loop in turn;

3. Send each switching circuit switch (plastic case or micro-break, etc.), manually put it into each circuit, and observe that the current of each circuit is normal after input;

4. Turn the controller to the automatic position and let it put in automatically.

High voltage: 1. After connecting the sampling current and voltage signals, check that there is no short circuit between the phase and phase and the ground of the main circuit, and then connect the communication signal (switch signal or communication line, etc.) between the capacitor cabinet and the front-end switch cabinet to send the control power supply, and do not send the main power supply first;

2. Manually divide and combine each switching circuit, as long as the switching state and action are normal;

3. Set the relevant parameters of controller and microcomputer protection, and send the main power supply again;

4. Manually switch each circuit respectively, and observe the current and display normal;

5. Put each circuit in the automatic control position, so that the controller can automatically switch.

In the 29 years that our company has been engaged in the R&D, production and sales of reactive power compensation equipment, we often see customers ask similar questions. This way:

The use of reactive power compensation device has many benefits, and many aspects can generate benefits for users, that is, save money.

1. Benefit the country and yourself, and be fined less. For the sake of grid security, the state requires the power factor to meet the requirements, which is a law that anyone must obey. Don't be fined, although passive, but spend less money, which is equivalent to making more money.

2. Reduce line loss. Theoretically, there is no loss in reactive power. But in fact, because the reactive power is transmitted back and forth on the wire between the equipment and the power grid, the wire is resistive, and the reactive current will heat up on the wire and produce loss.

Reactive power compensation can reduce the loss of reactive current, which is power saving and money saving. Especially for high-power equipment, if local compensation is adopted, the power saving effect will be better.

3. Improve voltage quality. The user compensates for the reactive power, which will increase the active output of the transformer and ensure the stability of the voltage output of the transformer. When the voltage is stable, the equipment will work normally.

It can reduce the chance of transformer and equipment failure, improve equipment efficiency, and so on, which equals less money.

4. Reduce harmonic interference. The compensation capacitor has a certain absorption effect on the high-frequency clutter in the power grid, which can improve the power quality, reduce the interference to electronic equipment (such as computers, etc.), increase the normal working time of the equipment, and reduce the cost of money.

The debugging of reactive power compensator is divided into two situations: low voltage and high voltage

Low voltage: 1. After connecting the sampling current and voltage signals, check that there is no short circuit between the phase and phase and the phase and ground of the main circuit, send the main power supply and the controller power supply, and do not send the switching circuit switch (molded case or micro break, etc.);

2. Set the controller parameters, and detect the wiring and operation of each control loop in turn;

3. Send each switching circuit switch (plastic case or micro-break, etc.), manually put it into each circuit, and observe that the current of each circuit is normal after input;

4. Turn the controller to the automatic position and let it put in automatically.

High voltage: 1. After connecting the sampling current and voltage signals, check that there is no short circuit between the phase and phase and the ground of the main circuit, and then connect the communication signal (switch signal or communication line, etc.) between the capacitor cabinet and the front-end switch cabinet to send the control power supply, and do not send the main power supply first;

2. Manually divide and combine each switching circuit, as long as the switching state and action are normal;

3. Set the relevant parameters of controller and microcomputer protection, and send the main power supply again;

4. Manually switch each circuit respectively, and observe the current and display normal;

5. Put each circuit in the automatic control position, so that the controller can automatically switch.

A lot, I think it's good to just know the SVC or you say static dynamic reactive power compensation, too many that you don't remember.