State and Topology Processor for Power System Monitoring
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Solution Overview
Problem
Current systems for monitoring and controlling electrical power systems lack effective methods to process and analyze network data, measurement data, and user-defined thresholds to provide accurate substation state and topology outputs, refined current and voltage measurements, and alarms in real-time.
Innovation Solution
A device comprising Intelligent Electronic Devices (IEDs) and a Data Processor that receives power system network data, measurement data, and user-defined thresholds to produce refined current and voltage measurements and alarms by processing dynamic and static topology data, applying correction factors, and performing consistency and symmetrical component checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If real-time processing of power system network data, measurement data, and user-defined thresholds is implemented, then operational efficiency and reliability are enhanced, but device complexity increases
Solution Approach 1:
The processor is divided into multiple functional modules including a data reception module, a data processing module, and an output module. The data processing module further segments tasks into topology processing, measurement refinement, consistency checking, and alarm generation. This modular segmentation enables real-time processing while managing complexity through organized functional divisions.
Solution Approach 2:
The state and topology processor is designed as a multi-functional device that simultaneously performs topology analysis, measurement data refinement, consistency verification, and alarm generation. By consolidating these diverse functions into a single universal processor, the system achieves real-time comprehensive monitoring without requiring multiple separate devices, thus enhancing productivity while controlling overall system complexity.
2Measurement precision
If accurate substation state and topology outputs and refined measurements are produced, then measurement precision improves, but device complexity increases
Solution Approach 1:
The processor performs preliminary topology processing and data validation before final measurement refinement. By pre-processing the network data and establishing the substation topology structure in advance, the system prepares the data framework needed for accurate measurement calculations, thereby improving measurement precision while organizing complex algorithms into manageable sequential steps.
Solution Approach 2:
The system implements consistency checking that compares processed measurements against expected physical laws and system constraints. This feedback mechanism verifies the accuracy of refined measurements and triggers reprocessing if inconsistencies are detected, ensuring high measurement precision through iterative validation while managing algorithmic complexity through structured verification protocols.
Data Source
AI summary
A State and Topology Processor (STP) may be communicatively coupled to one or more intelligent electronic devices (IEDs) communicatively coupled to a electrical power system to obtain one or more current measurements, voltage measurements, and dynamic topology data therefrom. The STP may receive the measurement data and may determine a current topology and a voltage topology therefrom. A current processor may use the current topology and the current measurements to refine the measurements, perform KCL, unbalance, symmetrical component, and consistency checks on the electrical power system. The voltage processor may use the voltage topology and the voltage measurements to perform similar checks on the electrical power system. One or more alarms may be generated responsive to the checks. The data may be displayed to a user in a display of a human machine interface and/or may be transmitted to a user programmable task module, and/or an external control unit.