CN205666621U - Automatic voltage regulator - Google Patents

Abstract

The utility model relates to a power engineering technology field especially relates to an automatic voltage regulator and automatic voltage regulation method. The utility model discloses a secondary coil bottom is qualified for the next round of competitions continuously through secondary zero line switching point and voltage, the quantity of equal proportion coil point secondary coil bottom coil equals the quantity of primary coil, firstly step up a little, that the second steps up some secondary coil bottom coil is in large quantities in the quantity of primary coil, firstly step up a little, the second steps up a little respectively and to switch point, second and step up to switch a little and be qualified for the next round of competitions continuously with the power through first stepping up, is qualified for the next round of competitions continuously with the power behind equal proportion coil point series capacitance, the resistance. The utility model has the characteristics of automatic stepping up under the not outage circumstances, satisfy vast town and country area at the unstable power demand of power consumption peak period voltage. The utility model discloses a device has simple structure, characteristics such as facilitate the use.

Description

an automatic regulator

technical field

The utility model relates to the technical field of electric power engineering, in particular to an automatic voltage regulator.

Background technique

At present, the current situation of rural power grids, power point configuration is insufficient, the power supply radius is too large, the wire diameter is too thin, coupled with the rapid development of the rural economy, the continuous acceleration of urbanization, and the national livelihood policy of "home appliances to the countryside", resulting in low electricity consumption in rural areas. The load is increasing day by day, and the voltage drop is obvious, resulting in the voltage of the rural power grid being too low, resulting in the failure of normal use of household appliances.

Due to the large power supply radius of the distribution transformer in the rural power grid, some equipment cannot operate under low voltage, such as home computers, audio equipment, etc., and it is necessary to automatically change the low voltage to high voltage.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides an automatic voltage regulator and an automatic voltage regulation method. The bottom of the secondary coil of the utility model is connected to the voltage outlet through the secondary zero line switching point, and the number of coils from the equal-proportion coil point to the bottom of the secondary coil is equal to the number of coils of the primary coil; the first boost point and the second boost point The number of coils to the bottom of the secondary coil is greater than the number of coils of the primary coil; the first boost point and the second boost point are respectively connected to the power outlet through the first boost switching point and the second boost switching point, and the proportional coil points Connect the capacitor and resistor in series to the outlet of the power supply. The utility model has the characteristics of automatically boosting the voltage under the condition of continuous power supply, and meets the power supply demand of the vast urban and rural areas where the voltage is unstable during the peak period of power consumption. The device of the utility model has the characteristics of simple structure, convenient use and the like.

The technical scheme of the utility model is: an automatic voltage regulator, including a primary coil and a secondary coil, wherein the two ends of the primary coil are respectively connected to the power supply incoming line, and the power supply outgoing line passes through the switching point of the live line of the main circuit and the zero line of the main circuit respectively. The switch point is connected to the power supply line, and it is characterized in that: the bottom of the secondary coil is connected to the voltage outlet line through the secondary zero line switch point, and the number of coils from the proportional coil point to the bottom of the secondary coil is equal to the number of coils of the primary coil; The number of coils from the first boost point and the second boost point to the bottom coil of the secondary coil is greater than the number of primary coil coils; the first boost point and the second boost point pass through the first boost switch point and the second boost switch point respectively The switching point is connected with the outlet of the power supply, and the proportional coil point is connected with the outlet of the power supply after being connected in series with capacitors and resistors.

According to the above automatic voltage regulator, it is characterized in that: the number of coils from the first boost point to the bottom of the secondary coil is 1.2 times the number of coils of the primary coil.

According to the automatic voltage regulator as described above, it is characterized in that: the number of coils from the second boost point to the bottom of the secondary coil is 1.4 times the number of coils of the primary coil.

According to the above-mentioned automatic voltage regulator, it is characterized in that: the capacitor is 1uF, and the resistance is 30 ohms.

According to the automatic voltage regulator as described above, it is characterized in that: the automatic voltage regulator also includes a voltage measurement device and a control device, the voltage measurement device is used to measure the voltage between the power supply incoming lines, and the control device Control the opening or closing of the main circuit zero line switching point, the main circuit live line switching point, the secondary zero line switching point, the secondary equal proportional coil switching point, the first boost switching point and the second boost switching point.

The utility model also discloses an automatic voltage regulation method, which is characterized in that: it includes the step of switching from normal power supply to boosting voltage and the step of switching from boosting voltage to normal power supply;

The steps to transfer from normal power supply to boost are divided into the following steps:

When it is detected that the input voltage is low and does not meet the power supply requirements of the equipment, first connect the equal voltage point on the transformer, and then disconnect the input voltage from the output voltage, so that the equal voltage point becomes the output voltage;

Then connect the high-voltage output point of the transformer to the output voltage, and cut off the equal voltage point, so that the high-voltage output point is the output voltage;

Steps to transition from boost to normal supply:

First connect to the equal voltage point, then disconnect the high voltage output point, so that the equal voltage point becomes the output voltage;

Then connect the input voltage and disconnect the equal voltage point, so that the input voltage is the output voltage.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the utility model control system.

Description of reference signs: primary coil 1, secondary coil 2, proportional coil point 3, first boost point 4, second boost point 5, smart capacitor 6, voltage measuring device 7, control device 8, main circuit zero Line switching point K1, main circuit live wire switching point K2, secondary zero line switching point K3, secondary equal-proportional coil switching point K4, first boost switching point K5, second boost switching point K6, capacitor C, resistor R , Power incoming lines L1, N1; power outgoing lines L2, N2.

detailed description

Below in conjunction with accompanying drawing, the technical scheme of the utility model is further described.

As shown in Figure 1, the utility model includes a voltage booster and a plurality of switching switches. The voltage booster of the utility model includes a primary coil 1 and a secondary coil 2, wherein the two ends of the primary coil 1 are connected to the power supply incoming line respectively. L1 and N1 are connected, and power outlet lines L2 and N2 are respectively connected to power supply inlet lines L1 and N1 through the main circuit live wire switching point K2 and the main circuit neutral line switching point K1.

As shown in Figure 1, the bottom of the secondary coil 2 of the present invention is connected to the voltage outlet N2 through the secondary zero line switching point K3, and the number of coils from the equal-proportional coil point 3 to the bottom of the secondary coil 2 is equal to the number of coils of the primary coil 1 , In this way, the voltage at the proportional coil point 3 is approximately the same as the voltage at L1, and the number of coils from the first boost point 4, the second boost point 5 to the bottom coil of the secondary coil 2 is greater than the number of coils of the primary coil 1. For example, the number of coils from the first boost point 4 to the bottom coil of the secondary coil 2 is 1.2 times the number of coils of the primary coil 1, such as the number of coils from the second boost point 5 to the bottom coil of the secondary coil 2 is the number of coils of the primary coil 1 1.4 times of , then when the input AC voltage is 150V, the voltage at the first boost point 4 is about 180V, and the voltage at the second boost point 5 is about 210V, then the second boosted voltage after boosting at this time Point 5 meets the power consumption requirements of daily equipment.

As shown in Figure 1, the first boosting point 4 and the second boosting point 5 of the utility model are respectively connected to the power outlet L2 through the first boosting switching point K5 and the second boosting switching point K6, and the proportional coil points 3 Connect the capacitor C and the resistor R in series to the power outlet L2. In the utility model, the capacitor C can be a 1uF capacitor, and the resistor R can be a 30-ohm resistor, which can meet the needs of most proportional point switching circuits.

As shown in Figure 2, the utility model also includes a voltage measuring device 7 and a control device 8. The voltage measuring device 7 is used to measure the voltage between the power supply incoming lines L1 and N1, and the control device 8 controls the contact switch K1 to K6 is open or closed.

The working process of the utility model is: when the voltage of the power supply incoming lines L1 and N1 is normal, the switching point K1 of the neutral line of the main circuit and the switching point K2 of the live line of the main circuit are closed, and other contact switches are opened. If during operation, if the voltage is low for a certain period of time and needs to be boosted, the secondary zero line switching point K3 and the secondary equal proportional coil switching point K4 are first connected through the control device 8, and then the main circuit zero line switching point is cut off. K1, switch point K2 of the live wire of the main circuit; then connect the first boost switch point K5, and then cut off the switch point K4 of the secondary proportional coil; in this way, the conversion from low voltage to high voltage is completed, and during the conversion process, the output voltage Maintained all the time, no power outages will occur. After the voltage measuring device 7 checks that the voltage returns to normal, first close the secondary proportional coil switching point K4, then disconnect the first boost switching point K5, and then switch the main circuit zero line switching point K1 and the main circuit live line Point K2 is closed, and finally the secondary proportional coil switching point K4 is opened to complete the switching.

As shown in Figure 1, the utility model can also add a smart capacitor 6 between the power outlets L2 and N2 to further ensure the stability of the output voltage during the voltage conversion process.

The utility model also discloses an automatic pressure regulating method, comprising the following steps,

When the input voltage is normal, the input voltage is directly used as the output voltage;

When it is detected that the input voltage is low and does not meet the power supply requirements of the equipment, first connect the equal voltage point on the transformer, and then disconnect the input voltage and output voltage in a short time, so that the equal voltage point becomes the output voltage;

Then connect the high-voltage output point of the transformer to the output voltage, and cut off the equal voltage point in a short time, so that the high-voltage output point is the output voltage; realize the conversion without power-off connection when the voltage is low;

After switching, when the input voltage is normal, it can automatically switch back to the input voltage output, and the steps are:

First connect to the equal voltage point, then disconnect the high voltage output point, so that the equal voltage point becomes the output voltage;

Then connect the input voltage, disconnect the equal voltage point, make the input voltage the output voltage, and complete the switching work of the whole process.

In the working process of the utility model, it is better to have less time when the transformer is in the state of two-stage work. If the switching of the secondary equal-proportion coil switching point K4 and the first step-up switching point K5 is completed within 1 second, the time can be reduced. The working time of line capacitance C and resistance R makes the output voltage realize normal operation as soon as possible.

The device and method of the utility model can be applied in the equipment which needs to work normally and cannot be cut off suddenly but the power is not too large. For example, in current rural families, when using a computer, if the voltage is too low, it cannot be used normally. After using the device of the utility model, it can be used normally, and the switching process voltage is relatively stable to ensure the normal operation of the user.

Claims (5)

1. An automatic voltage regulator, including a primary coil and a secondary coil, wherein the two ends of the primary coil are respectively connected to the incoming power line, and the outgoing line of the power supply passes through the switching point of the live wire of the main circuit, the switching point of the neutral line of the main circuit and the incoming line of the power supply respectively. Connected, characterized in that: the bottom of the secondary coil is connected to the voltage outlet through the secondary zero line switch point, and the number of coils from the equal-proportion coil point to the bottom of the secondary coil is equal to the number of coils of the primary coil; the first boost point, The number of coils from the second boost point to the bottom of the secondary coil is greater than the number of primary coil coils; the first boost point and the second boost point are respectively connected to the power outlet through the first boost switching point and the second boost switching point , the proportional coil points are connected in series with capacitors and resistors, and then connected to the outlet of the power supply. 2. The automatic voltage regulator according to claim 1, characterized in that: the number of coils from the first boost point to the bottom of the secondary coil is 1.2 times the number of coils of the primary coil. 4倍。 3. The automatic voltage regulator according to claim 1, characterized in that: the number of coils from the second boost point to the bottom of the secondary coil is 1.4 times the number of primary coil coils. 4. The automatic voltage regulator according to claim 1, characterized in that: the capacitor is 1uF, and the resistance is 30 ohms. 5. The automatic voltage regulator according to claim 1, characterized in that: the automatic voltage regulator also includes a voltage measuring device and a control device, the voltage measuring device is used to measure the voltage between the incoming power lines, and the control device Control the opening or closing of the main circuit zero line switching point, the main circuit live line switching point, the secondary zero line switching point, the secondary proportional coil switching point, the first boost switching point and the second boost switching point according to the boost demand .