The sparse formulation of ISPS and its application to voltage stability margin sensitivity and estimation

Long, Bo; Ajjarapu, Venkataramana

doi:10.1109/59.780907

Cited by 38 publications

(29 citation statements)

References 10 publications

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“…The probabilistic method to assessing the risk of voltage collapse in this paper is based on sensitivities of load margin around the bifurcation point [5], [6]. Here, we assume the risk calculation is being done for a near term future, and consequently, changes in operating conditions are small.…”

Section: Discussionmentioning

confidence: 99%

“…Both the randomness of the loadability and the corresponding contingency are listed in Table III. They are obtained from the expression (5).…”

Section: A Probability Of Collapsementioning

confidence: 99%

“…Its expected value is , and the variance is . 5 The probability distribution of maximum loadability is therefore, (5) and depends on the value of the parameters, their variability, and how they correlate with each other.…”

Section: Short-term Parametric Deviationmentioning

confidence: 99%

“…Based on the given expectation of , a Continuation Power Flow (CPF) [4] or other techniques will provide an expectation of maximum loadability and the margin sensitivities with respect to these parameters ( [5], [6]). Then, (4) where is the system maximum loadability; it is random due to the random parameters .…”

Section: Short-term Parametric Deviationmentioning

confidence: 99%

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Risk based voltage security assessment

Wan

McCalley

Vittal

2000

IEEE Trans. Power Syst.

129

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Abstract-The objective of this paper is to provide a risk-based approach to security assessment for a voltage stability constrained power system. It is motivated by a perception that today's deterministic reliability criteria to voltage stability assessment often results in operating restrictions that are not commensurate with the corresponding level of risk. The risk calculation provided in this paper accounts for both the future uncertainties on the system and the consequences associated with voltage collapse and violation of limits. Although the main purpose of this paper is to provide a method of evaluation, we also give an introduction to show how this reliability "leading indicator" penetrates the traditional rigid reliability boundary and how it may be used to price reliability in order to make a trade off between reliability and economics.

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Section: Discussionmentioning

confidence: 99%

“…Both the randomness of the loadability and the corresponding contingency are listed in Table III. They are obtained from the expression (5).…”

Section: A Probability Of Collapsementioning

confidence: 99%

Section: Short-term Parametric Deviationmentioning

confidence: 99%

Section: Short-term Parametric Deviationmentioning

confidence: 99%

See 2 more Smart Citations

Risk based voltage security assessment

Wan

McCalley

Vittal

2000

IEEE Trans. Power Syst.

129

View full text Add to dashboard Cite

show abstract

“…Using this kind of quantitative sensitivity measure, one would be able to further apply the methodology to estimate the system transfer margin limited by voltage collapse without actually re-calculating PV curves [9,10]. Furthermore, if system dynamics are a consideration, the sensitivity of a stability index can also be defined with respect to the DAE model of the system [11].…”

Section: • Sensitivity Based Margin Optimizationmentioning

confidence: 99%