Process Bus Transformer Setting Validation for Accurate Measurements

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Solution Overview

Problem

Current process bus systems experience measurement errors due to synchronization issues and missing settings, leading to mal-operation of protection functions, which require manual effort and domain expertise to resolve.

Innovation Solution

An engineering tool that identifies and marks missing transformer settings, fetches values from global metadata, and publishes them to a remote database to reduce measurement errors and provide visual aids for technicians.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual identification of transformer settings is performed by technicians, then domain expertise and customer care support are utilized, but measurement errors occur due to missing settings and synchronization issues

Engineering Contradiction:
Improvemeasurement accuracyVSAvoidmanual configuration effort
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system performs self-configuration by automatically identifying transformer settings from ICD/IID files and populating them in the SCD file without requiring manual technician intervention. The merging device and subscriber device exchange capability information files that contain transformer settings, enabling automatic population of configuration parameters.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Transformer settings are identified and prepared in advance during the capability description phase. The ICD/IID files contain pre-defined transformer settings that are later automatically transferred to the SCD file, eliminating the need for manual configuration during commissioning.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If ICD/IID files from different vendors are used without crucial settings, then device compatibility is maintained, but measurement errors occur due to missing transformer settings

Engineering Contradiction:
Improvevendor interoperabilityVSAvoidprotection function operation
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system uses a universal capability information file format (ICD/IID) that can represent transformer settings from any vendor in a standardized manner. This allows different vendor devices to interoperate while ensuring all necessary transformer settings are captured and transferred to the SCD file.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system validates that required transformer settings are present in the ICD/IID files and provides feedback through visual notifications to technicians about missing settings. This ensures completeness of configuration data before system operation, preventing measurement errors.

Inventive Principle:
Principle #23Feedback

3Device complexity

If visual aids are not provided to technicians, then system simplicity is maintained, but technical expertise is required to analyze root causes of compatibility issues

Engineering Contradiction:
Improvesystem simplicityVSAvoidtroubleshooting capability
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The system uses visual notifications with color-coded indicators to highlight missing transformer settings in the SCD file. This provides intuitive visual feedback to technicians about configuration issues without adding complex diagnostic tools, making troubleshooting accessible to users with varying levels of expertise.

Inventive Principle:
Principle #32Color changes

4Productivity

If delay correction settings are not pre-calculated, then configuration flexibility is maintained, but additional engineering effort is required during commissioning

Engineering Contradiction:
Improvecommissioning speedVSAvoidcalculation requirement
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Delay correction settings are pre-calculated and included in the capability information files (ICD/IID) during device manufacturing. This eliminates the need for on-site calculation and calibration during commissioning, significantly reducing engineering effort and commissioning time.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4194978B1Measurement error reduction in a process bus system
Publication Date: 2024.08.07 SIEMENS AG
  • EP4194978B1 patent drawingFigure 1
  • EP4194978B1 patent drawingFigure 2
  • EP4194978B1 patent drawingFigure 3

AI summary

Embodiments of the present invention relate to a method and device for reducing measurement error/s. The method (400) receives (402) a file by an engineering tool (204) from a system configurator tool (202) and parses (404) the file to identify a value associated with a transformer setting for a process bus device (104A). The method (400) fetches (406) information from installation data to identify the value when the value is not identified in the file and stores (408) the value in the engineering tool (204) when the value is identified in the file or in the information. The method (400) marks (410) the value as a missing value to visually notify a technician (208) when the value is not identified in the information or the file. The method (400) publishes (412) the value at a remote database (212) for process bus subscriber device/s (104B, 106A-106D).