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Reasonable design of major substation in load center ensures the rationality of overall network infrastructure and maintains system load serving capability. In the paper, a risk-based approach is proposed to evaluate substation loadability in transmission planning process. A variety of contingencies was applied to estimate loss of load using sensitivity analysis. Risk indices of load loss for incremental...
This paper is a result of ongoing activity carried out by Understanding, Prediction, Mitigation and Restoration of Cascading Failures Task Force under IEEE Computer Analytical Methods Subcommittee (CAMS). The task force's previous papers [1, 2] are focused on general aspects of cascading outages such as understanding, prediction, prevention and restoration from cascading failures. This is the second...
This paper proposes a probabilistic load flow (PLF) method considering market factors in power system analysis. Market-based power system brings a great many uncertainties and challenges to system operation and planning and market factors cannot be ignored in probabilistic load flow calculation. The method proposed in this paper is based on combined Cumulants and Gram-Charlier expansion and incorporates...
Renewable energy integration with the power systems will change the power systems in many ways. Renewable resources in remote areas will trigger extensive transmission upgrades to deliver green energy to the load centers. The intermittent and non-dispatchable characteristics of the renewable resources will impact both long-term system adequacy and real-time system security. Uncertainty of the development...
Ensuring the reliable operation of the power grid is more challenging, and vital, than ever. Industry restructuring presents transmission system planners with a range of uncertainties that traditional methods cannot address. EPRI's Probabilistic Reliability Assessment (PRA) program offers energy companies new, more-accurate tools for assessing grid reliability under restructured market conditions...
EPRI has developed a probabilistic risk assessment (PRA) method under power delivery reliability initiative. Unlike the traditional deterministic contingency analysis, PRA combines a probabilistic measure of the likelihood of undesirable events with a measure of the consequence of the events into a single index. EPRI internally developed the PRA program that uses contingency analysis results as well...
Unlike the traditional deterministic contingency analysis, probabilistic risk assessment (PRA) combines a probabilistic measure of the likelihood of undesirable events with a measure of the consequence of the events (that is, the impact) into a single index - probabilistic risk index (PRI). The developed PRA program uses contingency analysis results as well as the transmission facility outage information...
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