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Double injection synthetic test method of high voltage series TCR

A technology of thyristor valve and test method, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of reducing power supply capacity, etc., and achieve the effect of simple principle, easy realization, easy adjustment and transformation

Active Publication Date: 2006-09-20
CHINA ELECTRIC POWER RES INST +1
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AI Technical Summary

Problems solved by technology

The basic idea is to use two sets of power supply systems to provide high current and high voltage strength for the thyristor valve respectively, thereby greatly reducing the power supply capacity, but there is a big difference in the synthesis method of voltage strength and current strength

Method used

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  • Double injection synthetic test method of high voltage series TCR
  • Double injection synthetic test method of high voltage series TCR
  • Double injection synthetic test method of high voltage series TCR

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Referring to the attached figure, the block diagram of the high-voltage series thyristor valve double-injection test device is as follows figure 1 and figure 2 As shown, it mainly includes high voltage and high current rate of change pulse source and its regulating circuit, low-voltage AC and DC high current source and its regulating circuit, high-voltage circuit and low-voltage circuit isolation devices S1, S2 and test valve.

[0021] The high voltage and high current rate of change pulse source and its regulating circuit are used to provide the necessary positive and negative high voltage and its rate of change and high rate of current change for the test valve. It applies high voltage to the test valve by closing S1 and disconnecting S2 during the cut-off period of the test valve to test the forward voltage withstand capability of the test v...

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Abstract

The invention supplies a high voltage series connecting thyristor double injecting testing method. For bidirectional thyristor valve, it adopts low voltage AC heavy current power supply to suppler AC current, the angle of flow is controlled by sample valve bursting angle, at each instant of before opening or closing on each direction of heavy current, the current short time impulse is supplied by high voltage circuit; and for single direction thyristor valve, it adopts low voltage DC heavy current to supply power, at the end moment of phase changing of the inversion valve, the current impulse would be injected into the high voltage circuit. By adjusting the waveform of the high voltage circuit to make the sample valve bear a suitable positive or negative high voltage, before the next DC current arriving, another short time high current impulse would be supplied to the sample valve to testing the performance of buffer circuit of the sample valve under high losing.

Description

technical field [0001] The invention relates to a method for testing a thyristor valve in a power system and a power electronic system, in particular to a double-injection synthesis test method for a high-voltage serial thyristor valve. Background technique [0002] With the gradual promotion of the application of power electronics technology in power systems, high-voltage valves based on thyristor series voltage equalization technology have become the core components of various high-power power electronic devices. For example, Static Var Compensator (SVC), Thyristor Controlled Series Compensator (TCSC), High Voltage Direct Current Transmission (HVDC), etc. The operation test is an important test method related to improving the design and manufacturing level of various high-voltage series thyristor valves and improving their reliability. At present, the synthesis test method is generally used in the world to carry out the operation test of the thyristor valve. The basic id...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00H02M1/10
Inventor 温家良查鲲鹏汤广福
Owner CHINA ELECTRIC POWER RES INST
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