On-Line Contingency Selection Algorithm for Voltage Security Analysis

Nara, K.; Tanaka, K.; Kodama, H.; Shoults, R. R.; Chen, M. S.; Olinda, P. Van; Bertagnolli, David B.

doi:10.1109/mper.1985.5528820

Cited by 8 publications

(13 citation statements)

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“…The observation of the above example shows that the solution is obtained at p 1 = p 1 and that the larger objective is obtained for the less constrained case without (13). This is the case even if uncertainty in p 2 exists.…”

Section: Approximate Solution Of Region Size Problem For Rss In This mentioning

confidence: 80%

“…subject to (12)- (14). We note that the solution of (36) is not necessarily the optimal solution of the original problem of (27) since p =p does not provide the exact binding point of the line flow constraint of (13). In general, line flow limit (13) is less important since its violation for a short period may be permitted in actual power system operation.…”

Section: Approximate Solution Of Region Size Problem For Rss In This mentioning

confidence: 99%

“…In general, line flow limit (13) is less important since its violation for a short period may be permitted in actual power system operation. Nevertheless, the obtained solution satisfies all the constraints including (13), and therefore provides a slightly relaxed value of the objective, which is practically useful. The obtained solution exactly captures DS balance (12), which is critically important to avoid the system collapse.…”

Section: Approximate Solution Of Region Size Problem For Rss In This mentioning

confidence: 99%

“…Especially, the issue of power system security will be a critical problem in operation planning as well as real-time operation. So far, power system security has been maintained based on the N-1 security criterion, which has been refined through various basic studies on the security control scheme [1][2][3], relating optimal power flow method [4][5][6][7][8][9][10][11], and various techniques supporting the scheme [12][13][14]. These methods are deterministic and highly depend on the accuracy of load forecast and prediction of the system conditions.…”

Section: Introductionmentioning

confidence: 99%

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A new method of evaluating robust power system security against uncertainties

Yorino

Abdillah

Isoya

et al. 2015

IEEJ Transactions Elec Engng

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The rapid expansion of renewable energy (RE) generation is leading to severe problems related to the reliability of network operation. Power system security is threatened by increased uncertainties of RE outputs and reduced controllable resources. Therefore, it is important to evaluate the robustness of the system controllability in order to preserve system security against uncertainties of RE outputs. We refer to the robustness of the system in this context as ‘robust power system security’. This paper proposes a new formulation for evaluating the robust security region in controllable parameter space where the conventional N‐1 security criterion suffices in the presence of uncertainties. We specify the confidence interval (CI) of uncertain parameters and obtain the worst case feasible region defined by a set of security constraints, which is a very new approach in the treatment of uncertainties. We use the minimum set of static constraints in the load dispatching problem with CI of RE prediction to evaluate the security region, which is referred to as the robust static security region (RSS) in this paper. The proposed method is useful to assess the degree of difficulty of system planning and operation from the viewpoint of the balance between controllable generator capacity and RE uncertainties. © 2015 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Approximate Solution Of Region Size Problem For Rss In This mentioning

confidence: 80%

Section: Approximate Solution Of Region Size Problem For Rss In This mentioning

confidence: 99%

Section: Approximate Solution Of Region Size Problem For Rss In This mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A new method of evaluating robust power system security against uncertainties

Yorino

Abdillah

Isoya

et al. 2015

IEEJ Transactions Elec Engng

View full text Add to dashboard Cite

show abstract

“…The approach that we present in this paper differs from and is complementary to [1]- [20] in using post contingency measurements online rather than pre contingency calculations based on the state estimator. Our measurement-based approach is less accurate than state estimator methods, but can work independently of the state estimator, is fast, and handles multiple contingencies more easily.…”

Section: Previous Work a Contingency Analysismentioning

confidence: 99%

Monitoring voltage collapse margin with synchrophasors across transmission corridors with multiple lines and multiple contingencies

Ramirez

Dobson

2015

2015 IEEE Power &Amp; Energy Society General Meeting

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We use synchrophasor measurements of the complex voltage and current at both ends of multiple transmission lines that connect areas of a power system to monitor the online voltage collapse margin. A new reduction is used to reduce the multiple transmission lines to a single line equivalent and determine how to combine the synchrophasor measurements. Generator reactive power limits can be accommodated. The results show that this methodology can capture the effect of multiple contingencies inside the transmission corridors, giving awareness to the operators about the severity of contingencies with respect to voltage stability. KeywordsVoltage measurement, Power system stability, Transmission line measurements, Stability criteria, Power measurement, Current measurement Disciplines Electrical and Computer Engineering | Power and Energy CommentsThis is a manuscript of a proceeding published as Ramirez, Lina, Abstract-We use synchrophasor measurements of the complex voltage and current at both ends of multiple transmission lines that connect areas of a power system to monitor the online voltage collapse margin. A new reduction is used to reduce the multiple transmission lines to a single line equivalent and determine how to combine the synchrophasor measurements. Generator reactive power limits can be accommodated. The results show that this methodology can capture the effect of multiple contingencies inside the transmission corridors, giving awareness to the operators about the severity of contingencies with respect to voltage stability.

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Voltage instability detection using synchrophasor measurements: A review

Chappa¹,

Thakur

2020

Int Trans Electr Energ Syst

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Summary This article presents the concept of voltage instability and a critical review of the literature available for detecting voltage instability in the power system. Initially, the problem of voltage instability, the signification of P‐V, Q‐V curves, the effect of load models, on‐load tap changer (OLTC), and over‐excitation limits of generators on voltage instability are lucidly explained. A very brief description of conventional methodologies for voltage instability detection is also presented. This literature review mainly focuses on methodologies based on synchrophasor measurements including both local and global measurements. These methodologies' feasibility for real‐time application has been investigated. The indices that are compared for instability detection may serve as an introduction to measurement‐based voltage instability detection methodologies. The measurement‐based indices that are analyzed and compared are mainly based on the concept of Thevenin parameters estimation, generator equivalent models, nodal reactive power loss concept, and apparent power difference criteria. Thus, this paper attempted to compile all the work reported so far for voltage instability detection using synchrophasor measurements and for each methodology merits and demerits are lucidly discussed and are tabulated.

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On-Line Contingency Selection Algorithm for Voltage Security Analysis

Cited by 8 publications

References 0 publications

A new method of evaluating robust power system security against uncertainties

A new method of evaluating robust power system security against uncertainties

Monitoring voltage collapse margin with synchrophasors across transmission corridors with multiple lines and multiple contingencies

Voltage instability detection using synchrophasor measurements: A review

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