Power system contingency ranking using fast decoupled load flow method

Gongada, Sandhya Rani; Rao, T. S. S. R. K.; Rao, P. Mallikarjuna; Salima, Shaik

doi:10.1109/iceeot.2016.7755544

Cited by 15 publications

(5 citation statements)

References 5 publications

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“…Therefore, severe contingencies are chosen from the contingency set using the contingency screening method. In the screening process, the performance index is calculated as the violation rate of flow and voltage [20,21]. A higher performance index denotes more severe contingency.…”

Section: Contingency Screeningmentioning

confidence: 99%

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Robust prequalification process of a distribution system operator considering N‐1 contingency

Jeong

Kim

Park

et al. 2022

IET Renewable Power Gen

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A distributed energy resource aggregator (DERA) participates in the wholesale energy market (WEM) on behalf of aggregated distributed renewable energy sources (DRESs). The DERA manages DRESs according to the dispatch signal from the system operator (SO). However, a conventional independent SO that operates the WEM and transmission system does not monitor the distribution system. Therefore, overvoltage or overflow problems can occur during the generation of DRESs in a distribution system in which bids are accepted in the WEM. To address these problems, previous studies proposed the prequalification process. In the process, a distribution SO (DSO), which is responsible for the reliability of the distribution system, reviews DERA's bids before it is submitted to the WEM. However, these studies do not consider the outages of the system components. Therefore, we propose an N‐1 contingency prequalification process (N‐1 PP). The DSO manages the DERA's bid considering both the uncertainties and system states after the reconfiguration in contingency situations. In the proposed scheme, the DERA's bid is reviewed for severe faults and post‐reconfiguration systems. The results indicate that the N‐1 PP is more stable and durable than the prequalification process of previous studies.

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Section: Contingency Screeningmentioning

confidence: 99%

“…However, it is time-demanding to review all possible contingencies. Therefore, in the proposed N-1 PP, we choose several severe contingencies using screening methods used in the transmission system operation [20,21]. Next, the DERA's bid is reviewed considering the chosen contingencies and subsequent reconfigurations.…”

Section: Introductionmentioning

confidence: 99%

Robust prequalification process of a distribution system operator considering N‐1 contingency

Jeong

Kim

Park

et al. 2022

IET Renewable Power Gen

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“…One of the drawbacks of the performance indicator presented above is that this relationship only considers the overload of lines and other network equipment and does not take into account the voltage of the buses. In order to solve this problem, the efficiency index for bus voltage is usually defined as the following equation [37,39]:…”

Section: Performance Index Of Voltage (Piv)mentioning

confidence: 99%

Security Analysis of Hybrid Multi-Carrier Energy Systems

2021

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Multi-carrier energy systems (MCESs) provide collaboration between various kinds of energy carriers to supply the electricity, heating, and cooling demands. With the widespread use of MCESs in recent years, the security assessment of energy systems has attracted the attention of many contemporary researchers. However, the complexity of an MCES, including electrical, natural gas, and district heating networks, and different uncertainties imposes vast challenges to keep a safe operation energy supply. In this paper, a systematic methodology for the security analysis of MCESs is presented. For this purpose, considering electrical, natural gas, and district heating networks, an integrated model of energy systems is introduced. The security analysis of this framework is evaluated using some indices. In this approach, two well-known performance indices, including power performance index (PIP) and voltage performance index (PIV), are used to analyze the electrical networks’ security. Besides, the concept of Energy not supplied (ENS) is used for natural gas and district heating networks. In this regard, security analysis of a typical MCES including the IEEE 14-bus electrical network, the IEEE 30-bus electrical network, 20-node Belgian natural gas network, and 14-node district heating network is examined. The applicability of the proposed technique will be proven using comprehensive simulation analysis.

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“…That is why approximate methods as the quasi-decoupled load-flow method [16] have been used. This algorithm has been extended for the specific case of distribution networks [17] and adapted for the ranking of line contingencies [18]. Despite these various advantages and its wide range of application, this method still involves solving two linear systems, which is a time consuming operation even for sparse matrices.…”

Section: Introductionmentioning

confidence: 99%

Fast load-flow calculations based on spanning trees

Guichard,

Retière,

Mayou

2023

2023 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE)

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In this article a method is implemented for computing load flows that does not rely on the full resolution of a linear system. Instead, we solve very quickly many local load flows corresponding to dipoles (the electrical power is injected at two nodes) with an algorithm based on a Hamiltonian formalism, as it is usually done in quantum physics. The computational burden is quadratic in the size of the network when the dipoles are defined by the lines of a spanning tree of the network. This leads to a considerable speedup when compared to traditional methods relying on the full system inversion as well as methods involving other subproblems.

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Power system contingency ranking using fast decoupled load flow method

Cited by 15 publications

References 5 publications

Robust prequalification process of a distribution system operator considering N‐1 contingency

Robust prequalification process of a distribution system operator considering N‐1 contingency

Security Analysis of Hybrid Multi-Carrier Energy Systems

Fast load-flow calculations based on spanning trees

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