Does anyone know the description of the voltage regulator multi stage reactive power compensation de

According to the principle of Q = 2 F Cu, the reactive power output of the device is changed by adding a self-coupling voltage regulator to change the voltage U at both ends of the capacitor bank. The device can automatically track the reactive power and voltage of the power grid according to the pre-set parameters, and automatically adjust the voltage regulator gear and change the output reactive power according to the principle of reactive power compensation capacity, so that the power factor can be stabilized within the range of the fixed value setting, and can prevent the adjustment of oscillation.

It is characterized by a fixed access system for capacitors, which no longer packs, reducing the investment in auxiliary equipment caused by packing. The voltage at both ends of the capacitor no longer changes due to switching, so there is no switching overvoltage. In addition, since the capacitor charging and discharging time is not considered during adjustment, the adjustment time can be unlimited, and timely tracking adjustment can be realized.

Generally, the voltage regulation range is 60% to 100% of the rated voltage, and the reactive output adjustment range is 36% to 100% of the capacitor capacity;

The main components.

Control panel (including controller, protection unit, etc.), self-coupling voltage regulator, isolation switch, high-voltage shunt capacitor, reactor, discharge coil, zinc oxide arrester, discharge counter and other accessories, etc.

The multi-stage reactive power automatic compensation device of voltage regulator is to change the working voltage of the capacitor through the voltage regulator (voltage regulating device), and adjust the compensation capacity of the capacitor in stages to realize automatic compensation of reactive power. It is composed of voltage reactive power controller, voltage regulator, capacitor, reactor, discharge coil, isolation switch, lightning arrester, control PK screen, etc.

Voltage regulating reactive power compensation controller.

The current is taken from the A-line current, the standard rated input current is 5A, and an external CT should be used if it is greater than 5A;

Although the controller has the function of automatic phase sequence judgment, it is also necessary to try to ensure that the input voltage corresponds to the input current, that is, the phase sign and phase sequence are consistent.

If the CT used is connected to other instruments, the wiring should be connected in series;

Before removing the current input of the product, be sure to disconnect the CT primary circuit or short the secondary circuit! The network power meter provides asynchronous half-duplex RS485 communication interface, using modbus-rtu protocol, and all kinds of data information can be transmitted on the communication line. Up to 128 network meters can be connected simultaneously on a single line, each of which can be programmed with its own communication address (ADDR).

It is recommended to use shielded twisted pair cables for communication connections, and the wire diameter is not less than. The public side is optional; If the common end is connected to ground, the single-ended single-point grounding method must be used, and 120 1K terminal matching resistors should be added to both ends of the AB of the end instrument. When wiring, keep the communication line away from strong current cables or other strong electric field environments.

The RS485 interface inside the controller is not isolated from the switching input and temperature interfaces, and in order to protect the safety of the communication interface and the controller, the switching input interface and temperature interface must be isolated from other external active devices. (Separately configured).

The switch input should be passive externally, and the controller has its own voltage (DC12V) bias. The switching input can be used as a feedback input signal for the main switching output, and it should be connected to the auxiliary contact of the external intermediate relay according to the wiring of the main switching output. When the state of the corresponding main output node is different (such as the main output is closed, and the corresponding switching input node is not on), the corresponding switching indicator will flash, and the alarm output node is closed.

(Separately configured).

The controller has its own conversion circuit, only need to connect a PT100 temperature probe externally, generally PT100 has three outgoing wires, please connect two of the wires of the same color in parallel, and the wiring is not divided into positive and negative. The temperature control output controls the fan of the capacitor cabinet to ventilate and cool the capacitor.

The temperature control is carried out at 10% above and below the set temperature, if the set temperature is 50, the controller will close the temperature control output node at 55 hours, and disconnect the temperature node until the temperature drops to 45. Set appropriate temperature control points to prolong the life of the compensating capacitor and ventilation fan.

Before connecting the temperature probe (PT100), please make sure that the outlet of the temperature probe should be well insulated from the metal shell, otherwise it may cause damage to the communication interface or short circuit accident. (Separately configured).

When the switching output is inconsistent with the feedback signal, the input detection voltage signal is greater than the protection value, and the harmonics exceed the overharmonic protection value in the case of single-phase wiring, the alarm output node (DO14 and COM4) is closed. The external string voltage of the output contact shall not be greater than 250VAC (or DC30V), and the current shall not be greater than 2A.