Voltage Grid Protection Monitoring With Outsourced Diagnostics
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Solution Overview
Problem
Existing voltage grid monitoring systems do not provide additional insights beyond reducing overvoltage and indicating the current state of protection devices, lacking the capability for comprehensive evaluation and diagnostics.
Innovation Solution
A monitoring system that incorporates a protection device with a communication interface to transmit state values to a separate evaluation unit, enabling outsourced diagnostics and complex evaluations that would be impossible in conventional protection devices due to space constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the protection device includes all evaluation and diagnostic functions, then comprehensive diagnostics can be performed, but the device size and complexity increase significantly
Solution Approach 1:
The system divides the monitoring functionality into two segments: the protection device (SPD) that remains simple and compact, and the separate evaluation unit that performs complex diagnostics. The SPD only transmits state values via communication interface, while the evaluation unit receives and analyzes data from multiple sources including weather data, grid data, and operational data to generate comprehensive diagnostic information.
Solution Approach 2:
A separate evaluation unit acts as an intermediary between the protection device and the user/grid operator. This intermediary receives state values from the protection device, combines them with additional data from weather services, grid operators, and manufacturing information, performs complex evaluations, and presents the results in a user-friendly format without requiring the protection device itself to be complex.
2Measurement precision
If complex evaluation algorithms are implemented in the protection device, then accurate diagnostics are achieved, but installation space requirements increase
Solution Approach 1:
The complex evaluation algorithms and diagnostic functionality are extracted from the protection device and placed in a separate evaluation unit. This allows the protection device to maintain its compact form factor suitable for standard installation locations, while the evaluation unit handles all computationally intensive tasks requiring significant processing power and memory.
3Loss of information
If the protection device transmits detailed state data, then comprehensive evaluation is enabled, but communication data volume increases
Solution Approach 1:
The protection device transmits only essential state values (partial action) rather than complete raw data, which is sufficient for the evaluation unit to perform comprehensive diagnostics when combined with additional data sources. This selective transmission reduces communication overhead while maintaining diagnostic capability.
Data Source
AI summary
A monitoring system for monitoring a voltage grid (12) has a protection device (16) which is to be incorporated into the voltage grid (12) and which comprises at least one triggering protection component (18). The protection device (16) has at least one communication interface (26), which is configured to transmit a state value of the protection device (16) to an evaluation unit (30) that is formed separately from the protection device (16) and is configured to perform an evaluation, so that an outsourced evaluation is provided. In addition, a method of monitoring a voltage grid (12) is described.