Automatic compensation of reactive power sometimes cannot be self casting

This may depend on the size of your electricity load and the type of load

Load size: For example, if your load is too small, the compensation device cannot detect no action;

Load type: For example, spot welding machines or welding machines in some factories, the operating cycle of these equipment is relatively short, and the compensating control system has no time to respond. Generally speaking, the action time of industrial electricity compensation is 3 seconds, but the load operation of spot welding machines or welding machines is about 3 for a long time, so many of them do not act.

Suggestion: If the load is too small, the compensation equipment can be modified. If the power supply department does not pay a lot of fines, it will be forgotten, and when the load comes up, it will naturally be compensated;

If the power factor is not up to standard due to the special load type, especially the spot welding machine, because the load running time is too short, the compensation equipment has no time to act, so the control device of the compensation equipment should be modified. The capacitor switching device used in general industrial electricity is an AC contactor--- it is recommended to replace it with a thyristor switching device to meet its 10ms-50ms response action requirements.

By the way, there is another problem, that it may also be a contactor or something that burns out :)

I only know a little bit about this, but you can communicate with me, and if you have different opinions, you can also send an e-mail: Communicate with me.

If the old equipment is old, check the wiring of the automatic device, whether the wire is loose, whether the sampling is normal or not, if there is no problem, it is the controller that is aging and needs to be replaced.

If the controller problem is ruled out, the inability to automatically input is that the reactive power of the system is too small, and we cannot only focus on the power factor. The reactive power of the usual load is large, so it is normal to switch!

1. Whether there is a problem with the controller.

2. The load is too small, what are the specific loads, whether the compensation single-step capacity is too large, and whether the grouping method is reasonable.

3. The contactor is still the thyristor module.

4. Whether there is reactance and how many harmonics.

You need to provide detailed parameters to help you solve the problem.

The reason why the reactive power automatic compensator can not be automatically put in: you can try to change the two sold-song rock root wires of the current line, and then see if the current and voltage are in the same phase, if they are not in phase, they cannot work normally. 1.

Reactive power compensation capacitors are generally used in the medium voltage part of the substation or the 400V part of the distribution station. 2.The reason why reactive power capacitors are used in these places is because:

1) Provide a part of the reactive power for the system to reduce the line loss (this has nothing to do with the end home user, the power company will be more concerned about the line loss);

Summary. Hello, I am glad to answer for you: the reactive power compensation cabinet is opened, first close the main switch or knife melt switch, and then put the compensator into the manual, respectively, divide all the capacitance contactors or composite switches, and then put into the setting state, first put the overvoltage and undervoltage in, and then put the capacitance capacity and number, and each input and switching time, and then set the power factor requirements, at this time you can put in the automatic state, when the power factor does not reach the set state, the compensation proposal will be automatically put in, and when the setting state, it will automatically stop, The capacitor is automatically opened when the overfill is overfilled, so that the commissioning is complete.

Hello, I am glad to answer for you: the reactive power compensation cabinet is opened, first close the main switch or knife melt switch, and then put the compensator into the manual, respectively, divide all the capacitance contactors or composite open and seepage off, and then put it into the setting state, first put the overvoltage and undervoltage in, and then put the capacitor capacity and number, and the ridge every input and switching time, and then set the power factor requirements in, at this time you can put it into the automatic state, when the power factor does not reach the setting state, the compensation proposal will be automatically put in, to the setting state, Automatic stop, over-compensation capacitor self-draft eggplant open and open, so that the debugging is completed.

Press and hold the "Separate Setting" button for 5 seconds, and the reactive power compensation controller can enter the parameter setting state. 2.Press the "Separate Settings" button to switch the parameter items to be set, and enter the upper or lower button to repair the configuration after the Suitong operation.

3.Press the "Separate Settings" button to confirm that the setting data for the item is saved, and switch to the next parameter to be set. 4.

Once all the settings are complete, pressing the "Separate Settings" button will return to the automatic state. Guess as Tan.

The reactive power automatic compensator is a device used to compensate the reactive power in the power system, which can realize the compensation of reactive power by adjusting the capacity of the capacitor. Simultaneous switching means that in the power system, when the reactive power compensated by the capacitor has reached a certain level, in order to avoid overcompensation or undercompensation, a part of the capacitor bypass device needs to be put into or cut out of the power grid to maintain the stability and safety of the system. Therefore, the reactive power automatic compensator is switched at the same time in order to achieve the best reactive power compensation effect under the premise of ensuring the stability and safety of the system.

If the delay time is too short, it will switch frequently, damage the contactor, and the delay time will be too long, which will affect the compensation effect. When this kind of problem occurs, everyone generally looks back at the damage of the contactor, and rarely thinks of the problem of the defeated camera controller, and only replacing the contactor cannot solve the fundamental problem. In the case of frequent switching, it is necessary to purchase a controller with excellent quality and strong anti-interference ability.

The switching mode can be divided into three ways: dynamic and orange, static, dynamic and static combination, according to the speed of the load, the reactive power compensation mode is designed, the dynamic and static are distinct, and the dynamic contactor can not be used, nor the static thyristor.