Network Topology Optimization with Security Constraints

Bacher, R.; Glavitsch, H.

doi:10.1109/tpwrs.1986.4335024

Cited by 145 publications

(62 citation statements)

References 3 publications

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“…It is not necessary to have all of these opening schemes evaluated by the comprehensive evaluation model and fuzzy evaluation algorithm, which usually costs a lot of computation time. Thus, the generated opening schemes should be filtered first using the filtering index defined in (11) in Section 3 The weighted factors of filtering index are assigned as λ1 = 0.5, λ2 = 0.5. Four generated opening schemes (No.…”

Section: Actual Ac/dc Interconnected Power Systemmentioning

confidence: 99%

Decision Optimization for Power Grid Operating Conditions with High- and Low-Voltage Parallel Loops

Yang¹,

Zhao²,

Tian

et al. 2017

Applied Sciences

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Abstract:With the development of higher-voltage power grids, the high-and low-voltage parallel loops are emerging, which lead to energy losses and even threaten the security and stability of power systems. The multi-infeed high-voltage direct current (HVDC) configurations widely appearing in AC/DC interconnected power systems make this situation even worse. Aimed at energy saving and system security, a decision optimization method for power grid operating conditions with high-and low-voltage parallel loops is proposed in this paper. Firstly, considering hub substation distribution and power grid structure, parallel loop opening schemes are generated with GN (Girvan-Newman) algorithms. Then, candidate opening schemes are preliminarily selected from all these generated schemes based on a filtering index. Finally, with the influence on power system security, stability and operation economy in consideration, an evaluation model for candidate opening schemes is founded based on analytic hierarchy process (AHP). And a fuzzy evaluation algorithm is used to find the optimal scheme. Simulation results of a New England 39-bus system and an actual power system validate the effectiveness and superiority of this proposed method.

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Section: Actual Ac/dc Interconnected Power Systemmentioning

confidence: 99%

Decision Optimization for Power Grid Operating Conditions with High- and Low-Voltage Parallel Loops

Yang¹,

Zhao²,

Tian

et al. 2017

Applied Sciences

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“…Twenty nine line violations were found in the base case, with line overloads ranging from 110 to 237 percent. 9 Next, we opened line 153, the single line that improves the system dispatch cost the most, and conducted the n-1 contingency analysis. This resulted in 28 violations: 23 violations that occurred for the same contingency and on the same line as for the base case, and five violations not occurring in the base case.…”

Section: Contingency Analysismentioning

confidence: 99%

“…Transmission switching has been explored in the literature as a control method for problems such as over-or under-voltage situations, line overloads [6], loss and/or cost reduction [7], improving system security [8], or a combination of these [9] [10] [11]. Our investigation of optimal transmission switching extends this literature by probing the degree to which transmission switching could increase economic efficiency of power system dispatch.…”

mentioning

confidence: 94%

Optimal Transmission Switching

Fisher

O’Neill

Ferris

2008

IEEE Trans. Power Syst.

530

220

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Abstract--In this paper, we formulate the problem of finding an optimal generation dispatch and transmission topology to meet a specific inflexible load as a mixed integer program. Our model is a mixed-integer linear program because it employs binary variables to represent the state of the equipment and linear relationships to describe the physical system. We find that on the standard 118-bus IEEE test case a savings of 25 percent in system dispatch cost can be achieved.

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“…But things are changing gradually. There are researches employing linear programming algorithm to find the optimal line switching scheme with minimum power losses [11,12]. These researches only consider the branch active power flow constraint, and the bus voltage constraint is neglected.…”

Section: Introductionmentioning

confidence: 99%

Decision Optimization for Power Grid Operating Condition with High and Low Voltage Parallel Loops

Yang¹,

Zhao²,

Tian

et al. 2017

Preprint

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With the development of higher voltage power grid, the high and low voltage parallel loops are emerging, which lead to energy losses, even threaten the security and stability of power system. The multi-infeed HVDC configurations widely appearing in AC/DC interconnected power system make this situation even worse. Aimed at energy saving and system security, a decision optimization method for power grid operating condition with high and low voltage parallel loops is proposed in this paper. Firstly, considering hub substation distribution and power grid structure, parallel loop opening schemes are generated with GN algorithm. Then, candidate opening schemes are preliminarily selected from all these generated schemes based on a filtering index. Finally, with the influence on power system security, stability and operation economy in consideration, an evaluation model for candidate opening schemes is founded based on analytic hierarchy process (AHP). And a fuzzy evaluation algorithm is used to find the optimal scheme. Simulation results of New England 39-bus system and an actual power system validate the effectiveness and superiority of this proposed method.

show abstract

Network Topology Optimization with Security Constraints

Cited by 145 publications

References 3 publications

Decision Optimization for Power Grid Operating Conditions with High- and Low-Voltage Parallel Loops

Decision Optimization for Power Grid Operating Conditions with High- and Low-Voltage Parallel Loops

Optimal Transmission Switching

Decision Optimization for Power Grid Operating Condition with High and Low Voltage Parallel Loops

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