Sensitivity‐based optimal reliability design of AC/UHVDC systems
| Autor: | Zhuopeng Li, Yitian Jiang, Shenghu Li, Zhengyang Wu, Zhang Hao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
021103 operations research
Computer science 020209 energy 0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology Steady state probability Reliability engineering Power flow Operation mode Control and Systems Engineering 0202 electrical engineering electronic engineering information engineering System level Sensitivity (control systems) Electrical and Electronic Engineering Reliability design Reliability (statistics) |
| Zdroj: | IET Generation, Transmission & Distribution. 13:356-367 |
| ISSN: | 1751-8695 |
| Popis: | In this study, a sensitivity-based optimal reliability design (ORD) model of the AC/UHVDC (ultra-high-voltage DC) system is proposed. The model can be used to adjust the reliability parameters of the replaceable AC equipments and UHVDC components to satisfy the pre-specified system reliability while minimising the total cost. The corresponding sensitivities provide references to identify the non-coherency equipments and to adjust the reliability parameters while avoiding the repeated calculation of the system reliability. To realise the proposed ORD model, the optimal power flow model considering the unbalanced operation mode of the UHVDC is proposed, and the incremental transition rate of the UHVDC is derived, thus to quantify the system reliability indices. Combined with the sensitivity model of the UHVDC itself, the state probability is used to connect the reliability indices at the system level and the UHVDC components’ parameters, obtaining a direct solution of the corresponding sensitivities. The numerical results based on the modified IEEE reliability test system (RTS) test system are provided to validate the feasibility and accuracy of the proposed models. |
| Databáze: | OpenAIRE |
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