Distributed Reactive Power Regulation Considering Load Voltage and Power Loss

Zhong, Lingshu; Guan, Lin; Zhang, Junbo; Gong, Yitao; Chung, C. Y.

doi:10.1109/access.2020.2969817

Cited by 11 publications

(7 citation statements)

References 27 publications

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“…where u and v are normal distributions of zero mean and variances σ 2 u and σ 2 v , respectively. Here, σ u obeys the Lévy distribution given by (11), and σ v ¼ 1. Subsequently, the step size, η, is determined as:…”

Section: Simulation Results Obtained From Optimal Allocation Of Dgs U...mentioning

confidence: 99%

“…However, the performed analysis is based on the mathematical approach, which is not very effective as compared to the optimization algorithms due to the continuously varying parameters of large distribution networks. The study conducted in Reference [11] discusses control of reactive power in distribution networks to reduce the active power loss and enhance the load voltage profile. To achieve this, the role of distributed reactive power regulators is elaborated in terms of various aspects.…”

Section: Introductionmentioning

confidence: 99%

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A power loss minimization strategy based on optimal placement and sizing of distributed energy resources

Mirsaeidi

Devkota

et al. 2022

Int J Numerical Modelling

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Due to the enhanced price of electricity, the gradual depletion of fossil fuels, and the global warming concerns, power loss minimization through deployment of distributed generators (DGs) has attracted significant attention in recent decades. This paper proposes a genetic algorithm (GA) based strategy for minimization of active and reactive power losses through optimal location and size of DGs. It also quantifies and tallies the total network power losses for the cases with random as well as optimal allocation of DGs. To validate the accuracy of the obtained results from GA, another nature-inspired optimization algorithm, cuckoo search, is also deployed. The simulation results on IEEE 30 and 118 bus systems indicate that the proposed strategy not only can effectively reduce the total network active and reactive power losses but also lead to the improvement of network voltage profile.

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Section: Simulation Results Obtained From Optimal Allocation Of Dgs U...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A power loss minimization strategy based on optimal placement and sizing of distributed energy resources

Mirsaeidi

Devkota

et al. 2022

Int J Numerical Modelling

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“…The IEEE 39-bus transmission system (the system model of which can be found in [25]) coupled with modified IEEE-33 bus distribution systems (the system model of which can be found in [24]) is adopted to evaluate the effectiveness of the proposed real-time dispatch strategy for coupled transmission and distribution systems. Ten 33-bus distribution systems are connected to bus 11 of the 39-bus transmission system, while each 33-bus system is connected with eight dispatchable DERs at distribution buses 9, 11, 13, 21, 22, 25, 27, and 29.…”

Section: Case Studymentioning

confidence: 99%

“…converges to Equation (21) according to a series of theoretical derivations (under generalization of the LinDistFlow model [20,21] to radial systems) and numerical simulations [22][23][24].…”

mentioning

confidence: 99%

Real-Time Dispatch of Coupled Transmission and Distribution Systems within a Distributed and Cooperative Framework

Zhong

Guan

2020

Energies

Self Cite

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This paper presents a real-time dispatch strategy for coupled transmission and distribution systems within a distributed and cooperative control framework to maintain reliable and secure operation with minimum generation costs and maximum renewable energy consumption. The presented strategy transforms each distribution system into a dispatchable active source via an average-consensus-based active power control of renewable distributed energy resources (DERs) at the distribution level and then dispatches the active power reference of conventional generators as well as the distribution systems in a measurement-based way at a transmission level. The voltage fluctuation caused by the DER active power control is smoothened with a distributed voltage control method, which can also reduce the active power loss in the distribution systems. Compared to existing real-time dispatch strategies, the proposed strategy can eliminate security issues in the transmission system in a short time by regulating large amounts of DERs at a distribution level in a simple and easy controlled structure, in which the differences in the communication conditions and privacy requirements between the distribution and transmission systems are adequately considered.

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“…Reactive power optimization of power systems is a hot topic in the research of renewable energy integration. In the early stage, scholars paid more attention to the single-objective optimization problem to promote wind power or photovoltaic integration, and established corresponding optimization models with the objectives of minimizing operational costs (Ai et al, 2021), maximizing renewable energy consumption (Hui et al, 2019), and minimizing voltage offset (Zhong et al, 2020). However, with the increment of renewable integration, the operation of the power system becomes more complex, and the traditional single-objective optimization gradually develops into multi-objective optimization.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective reactive power optimization strategy of power system considering large-scale renewable integration

Chen²,

Dong³

et al. 2023

Front. Energy Res.

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To fully tap the abilities of renewables in reactive power optimization, this paper develops a detailed model for the power regulation capabilities of wind turbines and photovoltaic units and studies their impact on the power system’s operation. First, the power system model with renewables integration is established using AC power flow. The wind turbines and photovoltaic units are modeled in detail according to their topologies and operating characteristics, and then further simplified according to the feasible region. An improved DC power flow model is adopted to handle the non-linear characteristics of the power system. On this basis, a multi-objective reactive power optimization model is constructed to minimize the power generation cost, wind and solar power curtailment, and voltage offset. Finally, comparisons between two types of models in different scenarios are designed. Numerical simulations demonstrate that the participation of renewables in reactive power regulation can improve the operational economy and voltage stability of power systems.

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Distributed Reactive Power Regulation Considering Load Voltage and Power Loss

Cited by 11 publications

References 27 publications

A power loss minimization strategy based on optimal placement and sizing of distributed energy resources

A power loss minimization strategy based on optimal placement and sizing of distributed energy resources

Real-Time Dispatch of Coupled Transmission and Distribution Systems within a Distributed and Cooperative Framework

Multi-objective reactive power optimization strategy of power system considering large-scale renewable integration

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