CN103487617A - Three-phase primary voltage-current through device - Google Patents

Abstract

A three-phase primary pressure and primary flow device relates to a detection device. The current test device cannot synchronously output three-phase high voltage and three-phase high current, and cannot accurately verify the operation function, which can no longer meet the current needs. The invention includes a power control box, a three-phase integrated step-up transformer, and a split-type high-isolation current booster; the power control box is provided with a three-phase four-wire power input terminal, a ground terminal, a main power switch for incoming lines, and a voltage input switch. , Voltage output voltage regulator, current input switch, current output voltage regulator, voltage output terminal, current output terminal and voltage and current monitoring meter. The technical solution does not need to disconnect the secondary wiring, prevents false recovery, and has high accuracy.

Description

Three-phase primary pressure and primary flow device

technical field

The invention relates to a detection device.

Background technique

The rapid growth of electric power construction and the large-scale popularization of substations have put forward higher requirements for the reliability of the equipment put into operation before they are put into operation. The current test equipment cannot simultaneously output three-phase high voltage and three-phase high current, and cannot accurately verify the operation function, can no longer meet the current needs.

Contents of the invention

The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, to provide a three-phase primary pressure and primary current flow device, so as to achieve synchronous output of three-phase high voltage and three-phase high current, and can Exactly verify the purpose of running a function. For this reason, the present invention takes the following technical solutions.

The three-phase primary voltage and primary flow device is characterized in that it includes a power control box, a three-phase integrated step-up transformer, and a split type high-isolation current booster; the power control box is provided with a three-phase four-wire power input terminal , grounding terminal, incoming main power switch, voltage input switch, voltage output voltage regulator, current input switch, current output voltage regulator, voltage output terminal, current output terminal and voltage and current monitoring meter, three-phase four-wire The power input terminal is connected to one end of the main power switch of the incoming line through a wire, and the other end of the main power switch of the incoming line is connected to one end of the voltage input switch and one end of the current input switch through a wire, and the other end of the voltage input switch is connected to the voltage output through a wire. The other end of the current input switch is connected to the input end of the current output voltage regulator through a wire, the output end of the voltage output voltage regulator is connected to the voltage output terminal through a wire, and the output end of the current output voltage regulator is connected through The wire is connected to the current output terminal; the input terminal of the three-phase integrated step-up transformer is connected to the voltage output terminal, and the input terminal of the split type high isolation current booster is connected to the current output terminal; the three-phase integrated The output terminal of the step-up transformer is used to connect with the circuit under test; the output terminal of the high-isolation current booster is used for connecting with the circuit under test. This technical solution can simulate the real one-time pressurization and one-time current addition, without disconnecting the secondary wiring, preventing false recovery, and verifying whether the wiring of the primary equipment and the secondary equipment is correct, and whether the ratio configuration of the current transformer is correct, in a more realistic way. As well as the phase sequence and polarity of the connection; it can also be compared and analyzed with the test data in the background to complete a set of related function and data tests before operation, laying a solid foundation for a successful operation.

As a further improvement and supplement to the above technical solutions, the present invention also includes the following additional technical features.

The voltage and current monitoring meter includes a voltmeter for measuring three-phase voltage output, a first ammeter for monitoring three-phase voltage boost, and a second ammeter for measuring three-phase high current output.

The high isolation current booster includes three mutually independent current boosters, the first current booster is provided with a primary coil and a secondary coil, the number of turns of the primary coil is more than the number of turns of the secondary coil, and the output terminal of the secondary coil Connect the current transformer to measure the three-phase high current value through the second ammeter. Each current booster is composed of two coils, the input end with more turns and thinner wire diameter is connected to the current output terminal of the operation box; the output end with fewer turns and thicker wire diameter is connected to the measured line.

The input end of the three-phase integrated step-up transformer is connected to a voltmeter with three-phase voltage output, and the output end of the three-phase integrated step-up transformer is connected to the first ammeter.

The output end of the three-phase integrated step-up transformer is connected to one end of the voltage output switch through a wire, the output end of the high isolation current booster is connected to one end of the current output switch through a wire, and the other end of the voltage output switch is provided with a A first current transformer and a voltage transformer connected to the first ammeter and voltmeter; the other end of the current output switch is provided with a second current transformer.

Beneficial effects: This technical solution can simulate the real one-time pressurization and one-time application of current, without disconnecting the secondary wiring, preventing false recovery, verifying whether the wiring of the primary equipment and the secondary equipment is correct in a more realistic way, and the ratio configuration of the current transformer Whether it is correct, as well as the phase sequence of the connection, polarity, etc., high efficiency and good accuracy; it can also be compared and analyzed with the test data in the background to complete a set of related functions and data tests before operation, laying the foundation for a successful operation solid foundation.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic structural view of the power control box of the present invention.

Fig. 3 is the wiring diagram of the present invention.

In the figure: 1- power control box; 101- main power switch for incoming line; 102- voltage input switch; 103- voltage output voltage regulator; 104- current input switch; 105- current output voltage regulator; 106- voltmeter; 107-first ammeter; 108-second ammeter; 2-boost transformer; 3-high isolation current booster; 4-second current transformer; 5-current output switch; 6-voltage output switch; 7-voltage mutual inductance device.

Detailed ways

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1, 2, and 3, the present invention includes a power control box 1, a three-phase integrated step-up transformer 2, and a split-type high-isolation current booster 3 . The power control box 1 is provided with a three-phase four-wire power input terminal, a grounding terminal, an incoming main power switch 101, a voltage input switch 102, a voltage output voltage regulator 103, a current input switch 104, and a current output voltage regulator 105 , voltage output terminal, current output terminal and voltage and current monitoring meter, the three-phase four-wire power supply input terminal is connected to one end of the main power switch 101 of the incoming line through a wire, and the other end of the main power switch 101 of the incoming line is respectively connected to the voltage through a wire. The input switch 102 is connected to one end of the current input switch 104, the other end of the voltage input switch 102 is connected to the input end of the voltage output voltage regulator 103 through a wire, and the other end of the current input switch 104 is connected to the input of the current output voltage regulator 105 through a wire. The output end of the voltage output voltage regulator 103 is connected to the voltage output terminal through a wire, and the output end of the current output voltage regulator 105 is connected to the current output terminal through a wire; the three-phase integrated step-up transformer 2 The input terminal is connected to the voltage output terminal, and the input terminal of the split type high isolation current booster 3 is connected to the current output terminal; the output terminal of the three-phase integrated step-up transformer 2 is used to be connected to the circuit under test; high isolation The output terminal of the current booster 3 is used to connect with the circuit under test. The voltage and current monitoring meter includes a voltmeter 106 for measuring three-phase voltage output, a first ammeter 107 for monitoring three-phase boost voltage, and a second ammeter 108 for measuring three-phase high current output. The high-isolation booster 3 includes three mutually independent boosters, the first booster is provided with a primary coil and a secondary coil, the number of turns of the primary coil is more than the number of turns of the secondary coil, and the output of the secondary coil is terminal is connected to the second current transformer 4 to measure the three-phase large current value through the second ammeter 108 . The output end of the three-phase integrated step-up transformer 2 is connected to one end of the voltage output switch 6 through a wire, the output end of the high isolation current booster 3 is connected to one end of the current output switch 5 through a wire, and the output end of the voltage output switch 6 The other end is provided with a first current transformer and a voltage transformer 7 connected to the first ammeter 107 and voltmeter 106; the other end of the current output switch 5 is provided with a second current transformer 4.

The three-phase one-time pressure and one-time flow device shown in Figures 1-3 above is a specific embodiment of the present invention, which has already reflected the substantive features and progress of the present invention, and can be used according to actual needs under the inspiration of the present invention , equivalent modification of its shape, structure, etc., are all within the scope of protection of this scheme.

Claims (4)

1. Three-phase primary pressure and primary flow device, characterized in that it includes a power control box (1), a three-phase integrated step-up transformer (2), and a split type high-isolation current booster (3); the power supply The control box (1) is equipped with a three-phase four-wire power input terminal, a ground terminal, a main power switch for incoming lines (101), a voltage input switch (102), a voltage output voltage regulator (103), a current input switch (104), The current output voltage regulator (105), the voltage output terminal, the current output terminal and the voltage and current monitoring meter, the three-phase four-wire power supply input terminal are connected to one end of the incoming main power switch (101) through wires, and the incoming main The other end of the power switch (101) is respectively connected to one end of the voltage input switch (102) and one end of the current input switch (104) through a wire, and the other end of the voltage input switch (102) is connected to the input end of the voltage output voltage regulator (103) through a wire The other end of the current input switch (104) is connected to the input end of the current output voltage regulator (105) through a wire, and the output end of the voltage output voltage regulator (103) is connected to the voltage output terminal through a wire, and the current output regulator The output terminal of the transformer (105) is connected to the current output terminal through a wire; the input terminal of the three-phase integrated step-up transformer (2) is connected to the voltage output terminal, and the split type high isolation current booster ( The input terminal of 3) is connected to the current output terminal; the output terminal of the three-phase integrated step-up transformer (2) is used to connect with the tested circuit; the output terminal of the high isolation current booster (3) is used to be connected to the tested circuit . 2. The three-phase primary voltage and primary current flow device according to claim 1, characterized in that: said voltage and current monitoring meter includes a voltmeter (106) for measuring three-phase voltage output, a three-phase boost voltage monitor The first ammeter (107) for measuring the three-phase high current output and the second ammeter (108) for measuring the three-phase high current output. 3. The three-phase primary pressure and primary flow device according to claim 2, characterized in that: the high-isolation upflow device (3) includes three independent upflow devices, the first upflow device A primary coil and a secondary coil are provided, the number of turns of the primary coil is more than the number of turns of the secondary coil, and the output end of the secondary coil is connected to the second current transformer (4) to measure the three-phase large current value through the second ammeter (108) . 4. The three-phase primary voltage and primary current flow device according to claim 3, characterized in that: the output end of the three-phase integrated step-up transformer (2) is connected to one end of the voltage output switch (6) through a wire , the output end of the high-isolation current booster (3) is connected to one end of the current output switch (5) through a wire, and the other end of the voltage output switch (6) is provided with the first ammeter (107) and the voltmeter (106 ) connected to the first current transformer and voltage transformer (7); the other end of the current output switch (5) is provided with a second current transformer (4).

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