5 biggest effects of low voltage capacitor cabinet


5 biggest effects of low voltage capacitor cabinet

1. Help compensate reactive power for low voltage grid

When standing in the position of a manager of an enterprise or an electricity officer. We all feel sorry that each month we have to pay more money to be fined because of the coefficient cosφ not reached. If our electrical system has a coefficient of cosφ less than 0.85 but has not been installed with a low voltage capacitor. Or installing it without meeting the demand is the reason for the fine. So why do we have to install a low voltage capacitor system? Benefits of installing low voltage compensation capacitor?

2. Reduce electricity bills due to installation of reactive capacity capacitor cabinets

Currently the meter installed for factories displays three types of power: real power P (kW), reactive power Q (Kvar) and apparent power S (Kva). Money that we often get penalized is the money to buy reactive power. For households, charge is calculated on capacity P (kWh). And businesses due to large volume of consumption should pay more reactive capacity (Kvar).

We will have to choose one of the following two solutions to solve that problem:

    Pay for electricity the whole amount of the fine due to not reaching the capacity cosφ.

    Install cosφ capacity capacitor cabinet system to compensate for consumption. The nature of low voltage capacitor cabinet is like a generator. But it emits reactive power Q.

When the coefficient cosφ <= 0.85, according to the regulation of the electricity, consumption Q starts to be charged.

The penalty is actually the purchase of reactive power. Currently the new generation clock that the power installed for the factory displays 3 types of power: real power P (Kw), reactive power Q (Kvar), apparent power S (KVA). For households, the charge is calculated on the capacity of P (KWh), while businesses due to large consumption should pay additional reactive capacity (virtual capacity) Q (Kvar).

There are 2 options to pay for this usage

1. Paying directly for electricity, this money is often called a "fine" (as I understand in the past the electricity meters do not display Q capacity, so the user cannot see the Q capacity. but still have to pay so called "punishment")

2. Install the low voltage compensation capacitor in place. The nature of low voltage capacitor cabinet is like a generator, but it emits reactive power Q

When should I install a capacitor?

According to the regulation of electricity when your consumption system has cos <<0.85, the amount of Q consumption starts to be charged. So, in order not to be penalized, we should install a cosφ capacitor capacitor system. There are many ways to compensate such as hard compensation or soft compensation, automatic or manual compensation. But most of us often choose soft compensation and automatic compensation.

We will divide the low voltage capacitor capacitor as many different compensation levels as 6 levels, 12 levels. And there is a low voltage capacitor cabinet controller programmed to help compensate properly and sufficiently. Reaching the coefficient cosφ as required by electricity, so we will not lose the fine.

3. Low voltage compensation capacitor helps reduce loss on transmission line

Reducing power loss on transmission lines:

There are two components that cause power loss:

    The composition due to the effective capacity cannot be reduced

    Because of the reactive capacity, we can completely handle it. With reduced reactive power loss leads to reduced apparent power loss. In short, the reduction of electricity bills is no longer punished. So where do capacitor capacitors work and when? Please answer when their line is pulled too far. While the electric meter is installed at the top of the station. In this case we should compensate almost up to 0.95 to reduce power loss.

4. Lower voltage capacitor helps compensate for reduced reactive power

We know that there are two causes of voltage loss due to the active power and reactive power. The first reason we can't handle it. But because of the reactive capacity, we can completely reduce it. So when installing the capacitor cabinet, it will compensate the distance we pull away. Helping devices and engines to start at full capacity will not heat or burn.

5. Low voltage compensation capacitor helps compensate reactive power to increase the transmission capacity of the wire

Electric current running on the line consists of 2 components of effect and resistance. If we compensate at the end of the line then the resistance current will be reduced. That's why we can give the line more load, which is very simple.

In addition to the above effects, we cannot mention the effect of low voltage capacitor for transformers. It helps compensate the reactive capacity to help increase the real capacity of transformers.

From S = U * I we see that the transformer capacity consists of two parts P and Q. If we compensate well, S is almost equal to P, which allows the transformer to increase load.

Paul Mueller Company
Schneider Electric
ABB Electric
Mitsubishi Electric
LS Electric
Siemens Electric
Fuji Electric

 53/18 No. 9 Road,  Binh Hung Hoa, Binh Tan, HCM City

 (+84 28) 3756 1619   - Mobil/Zalo:  0888 722 655 (Mr. Armour)




253202 Online : 1

Follow us :