CN204462285U - A kind of surge voltage generation test unit - Google Patents

Abstract

The utility model relates to an impulse voltage generating test device, which belongs to the field of electric test equipment. It includes: a charging power supply, an impulse voltage generator connected to the charging power supply, and the impulse voltage generator includes: a charging protection resistor RC2 connected to the voltage input terminal, a main capacitor CS1, and a discharge terminal of the discharge ball; the main capacitor CS1 and the main capacitor CS2 The connection of the main capacitor CS2 is connected to the wave tail resistance Rt and the wave head resistance Rf respectively, the wave head resistance RF is grounded, and the discharge end of the discharge ball of the impulse voltage generator is connected to the pulse amplifier through the resistance R3 and the capacitor C; therefore , The utility model has the following advantages: 1. The design is reasonable, the structure is simple, the volume is small, and it is completely practical; 2. The impulse voltage generation range is large and the application range is wide.

Description

A test device for impulse voltage generation

technical field

The utility model relates to an impulse voltage generation test device, which belongs to the field of electrical test equipment, in particular to an impulse voltage generation device.

Background technique

Impulse voltage test system is a test equipment for simulating pulse high voltage. In real life, pulsed high voltage is often encountered. For example, when lightning strikes and thunder in nature, very high pulse current and voltage will appear at the place where the lightning strikes, and high pulse voltage will also be induced around; for example, the switching operation of switching equipment in the power system will also cause transient pulse voltage . These transient pulse voltage amplitudes are often tens of kilovolts or hundreds of kilovolts, which will cause equipment damage and endanger personal safety. Therefore, it is very necessary to conduct experimental research on impulse voltage. On the other hand, it is also very meaningful to study the discharge mechanism by simulating the natural lightning phenomenon.

However, the surge voltage generating device in the prior art has a large volume and a small range for generating the surge voltage, which is difficult to meet the experimental requirements.

Utility model content

The utility model mainly solves the technical problems in the prior art that the impulse voltage generating device has a large volume, the impulse voltage generation range is small, and it is difficult to meet the experimental requirements; it provides an impulse voltage generation test device. The device is small in size, has a large range of impulse voltage generation, and has a wide range of applications.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

An impulse voltage generating test device, comprising: a charging power supply, an impulse voltage generator connected to the charging power supply,

The charging power supply includes: a charging transformer T, the primary side of the charging transformer T is connected in parallel with the resistor R2 and then forms a series circuit with the resistor R1 and the input power supply; The capacitor Cb, the rectifier silicon stack D2, the charging protection resistor RC1, the DC high resistance RZ, and the protection resistor RB are connected to the ground; the connection point between the voltage multiplier capacitor Cb and the rectifier silicon stack D2 is also grounded through the rectifier silicon stack D1; The low-voltage end of the protective resistor RC1 is connected to the voltage input end of the impulse voltage generator as the output end of the charging power supply;

The impulse voltage generator includes: a voltage input terminal, a charging protection resistor RC2 connected to the voltage input terminal, a main capacitor CS1, and a discharge ball discharge terminal; the main capacitor CS1 is connected to one end of the main capacitor CS2, and the main capacitor CS2 The other end is connected to the wave tail resistance Rt and the wave head resistance Rf respectively, and the wave tail resistance Rt is connected to the receiving end of the discharge ball;

And when the voltage input terminal of the impulse voltage generator is directly connected to the output terminal of the charging power supply, the wave head resistance RF of the impulse voltage generator is grounded, and the discharge terminal of the impulse voltage generator passes through the resistor R3 and Capacitor C is connected to the pulse amplifier.

Optimally, in the aforementioned impulse voltage generating device, there are more than two impulse voltage generators, wherein: the voltage input terminal of the impulse voltage generator of the next stage is in phase with the charging protection resistor RC2 of the impulse voltage generator of the previous stage connection, the wave head resistance RF of the next-stage impulse voltage generator is connected to the discharge ball receiving end of the upper-stage impulse voltage generator; and the voltage input end of the first-stage impulse voltage generator is connected to the output end of the charging power supply, and finally The discharge ball receiving end of the primary impulse voltage generator is connected with the pulse output end.

Optimally, in the above-mentioned surge voltage generating device, there are an even number of the surge voltage generators, wherein: the voltage input terminal of the next-stage surge voltage generator is in phase with the charge protection resistor RC2 of the previous surge voltage generator. Connect; and: the wave head resistance RF of the odd-numbered impulse voltage generator is connected to the receiving end of the discharge ball of the upper-stage impulse voltage generator, and the main capacitor CS2 of the even-numbered impulse voltage generator is connected to the end of the wave head resistance Rf It is directly connected to one end connected to the main capacitor CS2 of the upper stage impulse voltage generator and the wave head resistance Rf; The voltage input terminal of the first-stage impulse voltage generator is connected with the output terminal of the charging power supply, and the discharge ball receiving end of the last-stage impulse voltage generator is connected with the pulse output terminal.

Optimally, in the above-mentioned surge voltage generating test device, the pulse output end is connected to a voltage equalizing ring.

Therefore, the utility model has the following advantages: 1. The design is reasonable, the structure is simple, the volume is small, and it is completely practical; 2. The impulse voltage generation range is large and the application range is wide.

Description of drawings

Figure 1 is a schematic diagram of the circuit structure when the impulse voltage generators of the present invention are connected in series.

Fig. 2 is a schematic diagram of the circuit structure when the impulse voltage generators of the present invention are combined in series and in parallel.

Fig. 3 is a schematic diagram of the circuit structure when the impulse voltage generators of the utility model are connected in parallel.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: as shown in Figure 1, a kind of impulse voltage generation test device comprises: charging power supply, the impulse voltage generator connected with charging power supply,

The charging power supply includes: charging transformer T, the primary side of charging transformer T is connected in parallel with resistor R2 and then forms a series circuit with resistor R1 and input power; D2, charging protection resistor RC1, DC high resistance RZ, and protection resistor RB are connected to ground; the connection point between the voltage doubler capacitor Cb and the rectifier silicon stack D2 is also grounded through the rectifier silicon stack D1; the low voltage end of the protection resistor RC1 is used as a charging power supply The output end of the impulse voltage generator is connected to the voltage input end;

The impulse voltage generator includes: a voltage input terminal, a charging protection resistor RC2 connected to the voltage input terminal, a main capacitor CS1, and a discharge ball discharge terminal; the main capacitor CS1 is connected to one end of the main capacitor CS2, and the other end of the main capacitor CS2 is respectively connected to the The wave tail resistance Rt is connected to the wave head resistance Rf, and the wave tail resistance Rt is connected to the receiving end of the discharge ball;

And when the voltage input terminal of the impulse voltage generator is directly connected to the output terminal of the charging power supply, the wave head resistance RF of the impulse voltage generator is grounded, and the discharge end of the impulse voltage generator is connected to the pulse through the resistor R3 and the capacitor C. amplifier connected.

There may be multiple impulse voltage generators, so that a higher impulse voltage can be obtained. Figure 1 is a connection mode between multiple impulse voltage generators: the voltage input terminal of the next impulse voltage generator is connected to the charging protection resistor RC2 of the previous impulse voltage generator, and the impulse voltage of the next stage is generated The wave head resistance RF of the device is connected to the discharge ball receiving end of the upper stage impulse voltage generator; The ball receiving end is connected with the pulse output end.

In this way, all n stages of the impulse generator are connected in series at the moment of ignition, and the maximum output voltage can be obtained.

Figure 2 is another connection mode between multiple impulse voltage generators. In this mode, there are an even number of impulse voltage generators, wherein: the voltage input terminal of the next impulse voltage generator and the previous impulse voltage connected to the charging protection resistor RC2 of the generator; and: the wave head resistance RF of the odd-numbered impulse voltage generator is connected to the discharge ball receiving end of the upper-stage impulse voltage generator, and the main capacitor CS2 of the even-numbered impulse voltage generator is connected to The end connected to the wave head resistance Rf is directly connected to the end connected to the main capacitor CS2 of the upper stage impulse voltage generator and the end connected to the wave head resistance Rf; The receiving end of the discharge ball is connected; the voltage input end of the first-stage impulse voltage generator is connected with the output end of the charging power supply, and the receiving end of the discharge ball of the last-stage impulse voltage generator is connected with the pulse output end.

Figure 3 is the connection mode of multiple impulse voltage generators in parallel connection, in which: the voltage input ends of the impulse voltage generators of each level are connected in parallel, the discharge ball receiving ends of the impulse voltage generators of each level are connected in parallel; The main capacitor CS2 of the voltage generator is connected in parallel with one end connected to the wave head resistance Rf; and the resistance Rt is disconnected from the receiving end of the discharge ball; the voltage input end of the first stage impulse voltage generator is connected with the output end of the charging power supply, The discharge ball receiving end of the primary impulse voltage generator is connected with the pulse output end.

This connection method is generally used in the impact test of transformers and reactors, because the tail time of this test is only determined by the impedance of the test object. In this connection, the generator can produce the maximum output energy. The pulse output terminal in the utility model is preferably connected with the pressure equalizing ring.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (4)

1. A surge voltage generation test device is characterized in that, comprising: a charging power supply, a surge voltage generator connected to the charging power supply, The charging power supply includes: a charging transformer T, the primary side of the charging transformer T is connected in parallel with the resistor R2 and then forms a series circuit with the resistor R1 and the input power supply; The capacitor Cb, the rectifier silicon stack D2, the charging protection resistor RC1, the DC high resistance RZ, and the protection resistor RB are connected to the ground; the connection point between the voltage multiplier capacitor Cb and the rectifier silicon stack D2 is also grounded through the rectifier silicon stack D1; The low-voltage end of the protective resistor RC1 is connected to the voltage input end of the impulse voltage generator as the output end of the charging power supply; The impulse voltage generator includes: a voltage input terminal, a charging protection resistor RC2 connected to the voltage input terminal, a main capacitor CS1, and a discharge ball discharge terminal; the main capacitor CS1 is connected to one end of the main capacitor CS2, and the main capacitor CS2 The other end is connected to the wave tail resistance Rt and the wave head resistance Rf respectively, and the wave tail resistance Rt is connected to the receiving end of the discharge ball; And when the voltage input terminal of the impulse voltage generator is directly connected to the output terminal of the charging power supply, the wave head resistance RF of the impulse voltage generator is grounded, and the discharge terminal of the impulse voltage generator passes through the resistor R3 and Capacitor C is connected to the pulse amplifier. 2. A kind of impulse voltage generating test device according to claim 1, characterized in that there are more than two impulse voltage generators, wherein: the voltage input terminal of the impulse voltage generator of the next stage and the impulse voltage of the previous stage The charging protection resistor RC2 of the voltage generator is connected, and the wave head resistance RF of the next-stage impulse voltage generation test device is connected with the discharge ball receiving end of the previous stage impulse voltage generation test device; and the voltage of the first-stage impulse voltage generator The input end is connected with the output end of the charging power supply, and the discharge ball receiving end of the last stage impulse voltage generator is connected with the pulse output end. 3. A kind of impulse voltage generating test device according to claim 1, characterized in that there are an even number of said impulse voltage generators, wherein: the voltage input terminal of said next stage impulse voltage generating test device is the same as that of the previous one connected to the charging protection resistor RC2 of the impulse voltage generation test device of the first stage; and: the wave head resistance RF of the odd-numbered impulse voltage generator is connected to the discharge ball receiving end of the upper-stage impulse voltage generation test device, and the even-numbered impulse voltage generator The end of the main capacitor CS2 of the generator connected to the wave head resistance Rf is directly connected to the end of the main capacitor CS2 of the previous impulse voltage generating test device connected to the wave head resistance Rf; the discharge ball of the even-numbered impulse voltage generator receives connected to the discharge ball receiving end of the previous impulse voltage generating test device; the voltage input end of the first stage impulse voltage generator is connected to the output end of the charging power supply, and the discharge ball accepting end of the last stage impulse voltage generator is connected to the pulse connected to the output. 4 . The impulse voltage generating test device according to claim 3 , wherein the pulse output terminal is connected to a voltage equalizing ring. 5 .