Voltage Stability Probabilistic Assessment in Composite Systems: Modeling Unsolvability and Controllability Loss

Rodrigues, A.B.; Prada, R.B.; Silva, Maria da Guia da

doi:10.1109/tpwrs.2009.2039234

Cited by 47 publications

(34 citation statements)

References 33 publications

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“…Tracing and locating long-term voltage instability risk in power system planning is proposed in [21]. Incorporation of voltage stability margin and limits in composite power system evaluation is also introduced in [22]- [24]. Further, Begovic and Phadke [25] have proposed a control of voltage stability using sensitivity analysis.…”

Section: Voltage and Reactive Power Limitsmentioning

confidence: 99%

A risk sensitivity-based approach to hardening power systems against catastrophic failures

Benidris

Elsaiah

Mitra

2014

2014 North American Power Symposium (NAPS)

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This paper introduces a method based on risk sensitivity analysis to determine strategies to harden power systems against catastrophic failures. The proposed method utilizes sensitivity analysis of the risk index with respect to the control variables to identify vulnerabilities that can be corrected by strategic or tactical measures. For any initiating event, the sensitivity of the risk of load curtailments with respect to the power quality constraints such as voltage and reactive power is derived, and thereby preventive/correction actions are determined. In this paper, in addition to the insertion of compensation equipments, rescheduling of generation is considered to increase the reactive power reserve. In order to evaluate the sensitivity of the risk index with respect to the power quality constraints, voltage and reactive power constraints are incorporated with a non-linear programming optimization problem with an objective of minimum load curtailments. The model is applied on a modified version of the IEEE Reliability Test System (IEEE-MRTS). Results are reported, discussed, and thoroughly analyzed.

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Section: Voltage and Reactive Power Limitsmentioning

confidence: 99%

A risk sensitivity-based approach to hardening power systems against catastrophic failures

Benidris

Elsaiah

Mitra

2014

2014 North American Power Symposium (NAPS)

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“…The PV stability analysis should consider how to accurately express the system's risks. Several researchers have studied the risk-assess based voltage stability problems using probabilistic methods [9].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Wind Power Integrated to the Power Systems Using Probabilistic Load Flow Based on PFV with LS

Mohammed

Wang

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Power flow analysis (PFA) is one of the most important issues of power system analysis and design. This paper aims at developing and applying a high-speed sampling method to produce large-capacity sample set based on pattern feature vector with layer structure (PFV with LS) of IEEE 14-bus system data analytical methods. In this study, sampling based pattern vectors are constructed in three layers. The first and second layer vectors are very low dimensional, and the sampling of the third layer is in parallel for each local area. Samples generated by this sampling method can be applied to the calculation of probabilistic load flow (PLF) and probabilistic static security assessment. Simulation results show that the proposed method can improve efficiency of PLF analysis and probabilistic static security assessment. The advantages of using PLF based on PFV with LS as the power flow limit can minimize the complicated mathematical equations. Furthermore, the algorithm is very simple and accurate, especially when the system connected to the wind power. IntroductionIn recent years, power system operation faces a new challenge due to deregulation and restructuring of electricity markets. The PFA is necessary for planning, operation, economic scheduling and exchange of power between utilities. This paper extends the application of the security assessment index. It aims to show the detailed mathematical model of the uncertainties for the grid connected wind farms. Power grid contains other power generation and wind power uncertainties. However, the effects of the uncertainty can be reduced by accurate calculation.Power flow (PF) is the very important tool for the analysis power systems, and it is used in operational and planning. The objective of PF is calculating unspecified bus voltage angles and magnitudes, active and reactive powers, as well as line loadings and their associated real and reactive losses for certain generation and load conditions. Different mathematical techniques have been used to examine PF analysis. These techniques are Newton-Raphson (NR), Fast-Decoupled (FD), and GaussSeidel (GS) methods.One of the best PF methods is NR method. The NR process usually converges faster than other methods, but it takes longer computational time per iteration. However, the proposed method in this paper is a concern in accounting for any kind of limit generation, not only line and curve but also the combination of line and curve with discontinuities.The load flow (LF) studies are performed for power system planning, operation, and control. LF studies data is also used for contingency analysis, outage security assessment, as well as for optimal dispatching and stability. The LF problem has received more attention than all the other power system

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“…When the load voltage exceeds the limits allowed due to the DG disturb, voltage instability might occur. Static voltage stability of the grid integrating DG mostly depends on the capacity (namely penetration), type (including different control methods) and the integrating location of DG [8][9][10][11]. Reference [8] and [9] study the impact of different DG type on the static voltage stability with the variation of integrating location and penetration of DG.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of static voltage stability for distributed generation integrated into power system and its impacts analysis

Xu¹,

Li²,

Zou³

et al. 2013

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Static voltage stability of the grid integrating distributed generation (DG) mostly depends on the capacity and control methods of DG. The analytic expression of load voltage regard to the penetration of DG is derived in this paper, and on the basis, the load voltage and the PV characteristic is analyzed under different DG penetrations. Then the impact of the different reactive power control strategies on load PV characteristic is compared. Using the extended line voltage stability index to analyze the static voltage stability of the grid integrating DG, the effects of reactive power control strategies on the line voltage stability index is studied. The results show that constant voltage control is more conducive to enhance the static voltage stability.

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Voltage Stability Probabilistic Assessment in Composite Systems: Modeling Unsolvability and Controllability Loss

Cited by 47 publications

References 33 publications

A risk sensitivity-based approach to hardening power systems against catastrophic failures

A risk sensitivity-based approach to hardening power systems against catastrophic failures

Assessment of Wind Power Integrated to the Power Systems Using Probabilistic Load Flow Based on PFV with LS

Characteristics of static voltage stability for distributed generation integrated into power system and its impacts analysis

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