Thyristor Valve Test System Logical Cooperation
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Solution Overview
Problem
The existing test systems for thyristor valves require frequent insertion and removal of optical fibers, leading to contamination, wear, and optical signal failures, increasing the workload and risk of errors during functional testing at engineering sites.
Innovation Solution
A test system where the VBE and tester cooperate logically, using existing fibers between VBE and TCU, eliminating the need for fiber insertion and removal, and allowing the tester to connect directly to the thyristor valve via cables, with a dedicated test mode that applies sinusoidal and surge voltages to verify thyristor functionality without direct VBE-tester connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If optical fibers are frequently inserted and removed for testing, then test functionality is achieved, but optical interface contamination and wear occur
Solution Approach 1:
The patent extracts the fiber insertion/removal operation from the testing process by enabling direct electrical connection between the tester and TCU, eliminating the need to disconnect optical fibers for testing purposes
Solution Approach 2:
The patent introduces an intermediary testing mode where the VBE acts as a mediator, allowing the tester to communicate with the TCU through electrical signals without requiring physical fiber disconnection, thus preserving optical interface integrity
2Productivity
If multiple fiber insertions and removals are performed during testing, then comprehensive testing is achieved, but optical path damage increases
Solution Approach 1:
The patent establishes a preliminary electrical connection between the tester and TCU that remains in place throughout the testing process, allowing multiple test functions to be performed without repeated physical connection changes
Solution Approach 2:
The patent removes the harmful fiber disconnection operation from the testing workflow by implementing a dedicated electrical testing interface that provides all necessary test capabilities without optical fiber manipulation
3Measurement precision
If optical fibers are disconnected for testing, then direct optical signal measurement is possible, but connection complexity increases
Solution Approach 1:
The patent uses the VBE as an intermediary device that receives optical signals from the TCU and converts them to electrical signals that the tester can measure, eliminating the need for direct fiber disconnection while maintaining measurement capability
Solution Approach 2:
The patent replaces the mechanical fiber disconnection approach with an electrical signal measurement system that achieves the same testing objectives through electrical interfaces rather than optical fiber manipulation
Data Source
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AI summary
A thyristor valve test system based on cooperation of logic functions of software, wherein the test system comprises: a thyristor valve (5) to be tested, a VBE (3) and a tester (4), and the VBE (3) has a dedicated test mode, the tester (4) provides three steps for each test item. The thyristor valve (5) to be tested and the VBE (3) are connected by optical fibers (1), and the thyristor valve (5) to be tested and the tester (4) are connected by cables (2), and there is no connection between the VBE (3) and the tester (4).