Test system of valve-based control equipment

Abstract

The invention relates to a test system of valve-based control equipment. The test system is connected with a converter valve and inputs test current to the converter valve, wherein the test current issmaller than the normal operating current of the converter valve. The test system includes a current acquisition module and a pole control module, wherein the current acquisition module is used for acquiring the present current value of the converter valve in real time, and the pole control module is connected with the current acquisition module and comprises at least one processor and a memory in communication connection with the at least one processor, wherein the memory stores instructions that can be executed by the at least one processor, so that a certain method can be realized when theat least one processor executes the instructions. The method includes the following steps that: the present current value is compared with a preset fault current threshold value; whether a fault occurs on the converter valve is judged according to a comparison result; when the fault occurs on the converter valve, action signals returned by the valve-based control equipment are received; whether the action signals are corresponding to the fault occurring on the converter valve is judged; when the action signals are corresponding to the fault occurring on the converter valve, it is judged thatthe valve-based control equipment works normally.

Description

technical field [0001] The invention relates to the field of direct current transmission, in particular to a test system for valve base control equipment. Background technique [0002] The converter valve is responsible for the heavy duty of DC-AC conversion and AC-DC conversion in the DC transmission project. It is the core equipment of the DC transmission project. When the modular multilevel converter valve technology (MMC) is applied in the field of HVDC transmission, Hundreds or even thousands of sub-modules need to be connected in series, and each sub-module must be independently controlled, protected and monitored; as the interface device of the control protection system and the converter valve, the valve base control system (VBC) is responsible for all sub-modules and the entire bridge. The operation control and safety protection of the entire system of the arm and even the converter valve are important tasks. The valve base controller (VBC) connects the upper level ...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that in the prior art, various working conditions of the converter valve cannot be pre-tested, which reduces the reliability of VBC operation, and then affects the stability of the entire converter valve.

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