Computer simulation testing system for high voltage direct current transmission equipment

Abstract

The invention provides a computer simulation testing system for high voltage direct current transmission equipment. The computer simulation testing system for the high voltage direct current transmission equipment comprises a control protection system, a valve base electronic cabinet, a simulation return cabinet, a converter valve cabinet, an RTDS interface device and a real-time data simulation system. The control protection system is used for transmitting 12-path triggering signals to the valve base electronic cabinet, the valve base electronic cabinet is used for transmitting TTM board single-double pulse driving signals to the converter valve cabinet through the simulation return cabinet, and the RTDS interface device is used for transmitting terminal voltage signals for pulsing converter valves to the converter valve cabinet and supplying power to TTM boards inside the converter valve cabinet. According to the computer simulation testing system for the high voltage direct current transmission equipment, an RTDS is used for simulating the operation of a power system, the converter valve cabinet is used for simulating the converter valves, the expansion of the series of thyristors of the converter valves is achieved through the simulation return cabinet, in this way, a high voltage direct current transmission converter valve tower is equivalently reduced to the size of four standard electric screen cabinets, simulation testing can be conducted in a computer simulation laboratory, and the performance verification of valve base electronic equipment and TTMs and the test verification of direct current transmission control strategies and methods can be achieved.

Description

technical field [0001] The invention relates to a test system, in particular to a computer simulation test system for high-voltage direct current transmission equipment. Background technique [0002] HVDC transmission technology is used for long-distance transmission of electric energy through overhead lines and submarine cables; at the same time, it is also used for the connection between independent power systems in some occasions where traditional AC connection is not suitable. The world's first commercial high-voltage direct current transmission line was born in Sweden in 1954 to connect the mainland of Sweden and Gotland, and was completed by ASEA (now ABB Group). [0003] In a HVDC transmission system, electric energy is derived from one point of the three-phase AC grid, converted into DC at the converter station, and transmitted to the receiving point through overhead lines or cables; after the DC is converted into AC at the other side of the converter station, it is ...

AI Technical Summary

Problems solved by technology

[0013] In the prior art, the power system RTDS of the high-voltage direct current transmission project before it is put into operation is not connected to the actual thyristor level and the simulation return link. The usual test wiring is composed of VBE, RTDS, and direct current transmission control and protection system. The simulation of the valve side is realized by modifying the software in VBE, which cannot accurately reflect the action response of the TTM board (thyristor trigger monitoring board) and the thyristor level to the control protection command and trigger pulse, especially the thyristor level. When the control signal is abnormal, it cannot effectively simulate valve side faults such as single valve failure

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