Power System Network Stability Calculation and Error Prediction

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Solution Overview

Problem

Current power system network stability calculations and error prediction methods do not provide operators with sufficient information to determine network stability or predict potential errors proactively, leading to increased risk and impact of power failures.

Innovation Solution

A device and method that calculates network stability using standard object information, including connection state and time stability, to predict errors and display predictive information, enabling operators to respond promptly to potential issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If standard object information is provided according to IEC62351-7, then network maintenance is standardized, but operators cannot intuitively determine network stability or predict errors

Engineering Contradiction:

Improvenetwork stabilityVSAvoidstability prediction information

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent introduces an intermediary device that receives standard object information from the power system network and transforms it into intuitive stability assessment results. This intermediary processes raw data (connection states, retry counts, alternative paths) and presents processed information (stability scores, error predictions) that operators can easily understand and act upon, resolving the gap between standardized data and actionable insights.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces manual analysis of standard object information with an automated calculation system. The device automatically computes connection state stability, connection time stability, and overall network stability using predefined formulas, eliminating the need for operators to manually interpret complex standardized data and enabling real-time stability assessment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If only alarm information is provided to operators, then error detection is simplified, but operators cannot respond proactively before errors occur

Engineering Contradiction:

Improveerror detectionVSAvoidresponse time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent implements preliminary action by calculating and presenting stability assessment results that predict potential errors before they occur. The device analyzes current network states and trends to forecast stability issues, enabling operators to take preventive measures before actual errors or alarms occur, thus reducing response time and preventing accidents.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent establishes a feedback loop where the device continuously monitors standard object information, calculates stability metrics, and provides feedback to operators in real-time. This continuous feedback mechanism allows operators to observe stability trends and respond to deteriorating conditions before they escalate into actual errors, bridging the gap between simple alarm detection and proactive error prevention.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If detailed standard object information is collected, then network monitoring is comprehensive, but operators cannot intuitively assess connection stability

Engineering Contradiction:

Improvenetwork monitoring precisionVSAvoidstability assessment

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent applies segmentation by dividing the comprehensive standard object information into distinct stability components: connection state stability (based on connection states and retry counts) and connection time stability (based on connection durations). Each component is calculated separately using specific formulas, allowing operators to understand different aspects of network stability independently while maintaining comprehensive monitoring precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transforms detailed standard object information into simplified stability parameters through mathematical calculations. Raw data such as connection states, retry counts, and alternative path information are converted into standardized stability scores and assessment results, making comprehensive network monitoring information intuitively understandable and actionable for operators.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10394975B2Device and method for calculating stability and predicting error of power system network

Publication Date: 2019.08.27 KOREA ELECTRIC POWER CORP

AI summary

The present invention relates to a device and a method for calculating stability and predicting an error of a power system network, the device comprising: a standard object information reception unit for receiving standard object information provided by a power system network; a connection state stability calculation unit for calculating connection state stability (Sstate) using the standard object information; a connection time stability calculation unit for calculating connection time stability (Stime) using the standard object information; a network connection stability calculation unit for calculating a final network connection stability using the network connection state stability (Sstate) and the connection time stability (Stime); and an error prediction information display unit for displaying error prediction information including at least one of network path information, a network state value, the final network connection stability, the connection state stability (Sstate), and the connection time stability (Stime).