HVDC Valve Control Error Detection via Hardware Monitoring
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Solution Overview
Problem
Current HVDC transmission systems face challenges in efficiently analyzing and processing measurement data to determine the cause of events and maintaining stable data flow, leading to limitations in event processing and reliability.
Innovation Solution
A device and method for controlling HVDC transmission systems that include a communication unit, a control unit for checking data line errors and connection states based on databack signals, and an output unit for generating valve control signals, enabling reliable data output and error notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data monitoring is performed using software in a typical HVDC transmission system, then the system can transmit and distribute measurement data, but the time required to check the cause of events and perform processing is excessively long
Solution Approach 1:
The patent replaces software-based data monitoring with a hardware-based monitoring unit that actively monitors data lines and detects errors in real-time. This hardware substitution eliminates the time-consuming software processing delays, enabling immediate detection and notification of data errors and line connection issues, thus dramatically improving event processing speed.
2Ease of operation
If a typical HVDC transmission system simply distributes analyzed data to valve control modules, then data distribution is straightforward, but the system cannot effectively analyze the cause of events or process errors
Solution Approach 1:
The patent segments the data monitoring function into a dedicated hardware monitoring unit separate from the main control system. This monitoring unit independently checks data line errors and line connection errors, providing reliable error detection and analysis capabilities while maintaining simple data distribution through the existing valve control modules.
Solution Approach 2:
The patent introduces a hardware monitoring unit as an intermediary between the data acquisition system and the valve control modules. This intermediary actively monitors data integrity, detects errors, and provides reliable error information, thereby enhancing the system's event analysis capability without complicating the overall data distribution architecture.
3Device complexity
If the system lacks active monitoring of data validity and connection states, then the system structure remains simple, but the reliability of valve control data cannot be ensured
Solution Approach 1:
The hardware monitoring unit performs self-service by autonomously monitoring data lines, detecting errors, and generating error notifications without requiring complex external monitoring systems. This self-monitoring capability ensures valve control data reliability while maintaining relatively simple system architecture.
Data Source
AI summary
A device for controlling a high voltage direct current (HVDC) transmission system is provided. The device includes: a communication unit communicating with a control device; a control unit obtaining a databack signal received through the communication unit, checking a data line error and a line connection error based on an obtained databack signal, and outputting a valve control signal based on the databack signal; and an output unit outputting the valve control signal to a valve control device based on control of the control unit.