Detection of Errors in Three-Phase Line Models Using Synchronized Phasor Measurements
| Autor: | Ali Abur, Ramtin Khalili |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
business.industry 020209 energy Phasor Estimator CPU time 02 engineering and technology Transmission system symbols.namesake Three-phase Distributed generation Lagrange multiplier 0202 electrical engineering electronic engineering information engineering symbols business Error detection and correction Algorithm |
| Zdroj: | ISGT-Europe |
| Popis: | Recent proliferation of distributed energy sources in distribution or sub-transmission systems necessitates close monitoring of these three-phase power grids which typically operate under unbalanced loading conditions. Unlike the transmission systems where the network equations are commonly based on the positive sequence component models, a detailed three phase model will have to be used in implementing network applications for these systems. In the specific case of the state estimator, where measurement and parameter errors may bias the solution, bad data and parameter error detection algorithms should also be incorporated. Implementing the state estimator and error detection algorithms for three-phase systems impose additional computational burden and modifications to the state estimation code. This paper proposes a practical solution to avoid these issues by using synchronized phasor measurements and modal decoupling. The previously developed parameter error detection algorithm based on the normalized Lagrange multipliers (NLM) test is applied to the measurements independently in each mode in parallel, not only saving CPU time but also avoiding new code development for a three-phase estimator. Different parameter error scenarios are created and tested to verify the effectiveness of the proposed error detection approach. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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