Centralized Control of System Voltage/Reactive Power Using Genetic Algorithm

Nimpitiwan, N.; Chaiyabut, C.

doi:10.1109/isap.2007.4441598

Cited by 13 publications

(10 citation statements)

References 8 publications

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“…Table IV shows the results of and the impact factors , , and when a three-phase short circuit fault occurs on line 24-25. These impact factors are calculated by (23), (25), (27), and (29).…”

Section: B Ieee 30-bus System 1) Voltage Change and Impact Factor Camentioning

confidence: 99%

“…Based on agent coordination, a distributed non-cooperative MPC formulation with neighbor-to-neighbor communication is proposed for long-term voltage control in multi-area power systems [22]. Other methods include genetic algorithm [23], Lagrangian decomposition algorithm [24], and graph theory for neighborhood compensation [25]. The above coordinated control methods are targeted for the transmission system.…”

Section: Introductionmentioning

confidence: 99%

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Coordinated Voltage Control With Online Energy Margin Constraints

Liu

2016

IEEE Trans. Power Syst.

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Based on data available from phase measurement units (PMUs), this paper proposes an energy margin constrained online coordinated voltage control (CVC) algorithm. First, the energy function model is established, which is based on detailed device models that include the effects of shunt capacitor banks, reactive power output of generators and under-load-tap-changers (ULTCs). In order to improve the computational efficiency, a Lie derivative-based method is used to map the energy change into the system trajectory along the energy manifold. Then, the change of energy margin based on the Lie derivative is used as the objective function and the reactive power margin is used as a constraint to formulate a linear programming problem. A coordinated strategy is proposed to help achieve the optimal solution when the linear programming problem is solved. In comparison with the other control modes, the proposed method improves the stability margin and the control effectiveness of voltage profile. Numerical results are provided for a three-machine system, the IEEE-30 bus system and the New England-39 bus benchmark system. Index Terms-Coordinated strategy (CS), coordinated voltage control (CVC), energy margin, voltage stability.Qun-Ying Liu (M'13) received the B.Eng. degree and M.S. and Ph.D. degrees in electrical engineering from

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Section: B Ieee 30-bus System 1) Voltage Change and Impact Factor Camentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coordinated Voltage Control With Online Energy Margin Constraints

Liu

2016

IEEE Trans. Power Syst.

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“…The concept of fairness in the sense of economics has been briefly introduced in [6] where fairness criteria namely "free from envy", "efficiency", "accountability" and "altruism" have been checked for a centralized optimization method of multi-TSO power system. Successful centralized coordination has been reported only for rather small-scale power systems [7][8][9]. …”

Section: A Centralized Coordination Schemesmentioning

confidence: 99%

Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part I: Principal

Moradzadeh

Boel

2012

AMR

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This two-part paper deals with the coordination of the control actions in a network of many interacting components, where each component is controlled by independent control agents. As a case study we consider voltage control in large electric power systems, where ever-increasing pressures from the liberalization and globalization of the electricity market has led to partitioning the power system into multiple areas each operated by an independent Transmission System Operator (TSO). Coordination of local control actions taken by those TSOs is a very challenging problem as poorly coordinated operation of TSOs may endanger the power system security by increasing the risk of blackouts. This coordination problem involves many other issues such as communication, abstraction and last but not least optimization. This first part of the paper is devoted to the principals of the coordination control, addressing some of those issues using as a case study the problem of coordination control for avoiding voltage collapse in large-scale multi-area power systems.

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“…Centralized methods are also presented in the literature. [14][15][16] It should be noted that centralized methods need reliable communications channels which requires high investment, but decentralized or local strategies are based on voltage and reactive power control of the point of common coupling (PCC) and don't need investment in communications and sensors. This paper uses fuzzy logic as a decentralized control strategy to control reactive power and voltage at PCC.…”

Section: Introductionmentioning

confidence: 99%

Coordination of Inverter-Based Distributed Generation Units and Reactive Power Compensators in Power Systems

Rezaei¹,

Esmaeili²,

Mohammadi-Abdar³

2014

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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High penetration of wind turbines and photovoltaic arrays in distribution system can result in overvoltages and voltage variation. However, with help of their converters, voltage and reactive power control of these distributed generation units (DG) is possible. Reactive power capability of wind turbines and photovoltaic systems are explained in this paper and a decentralized control method is used to control the voltage of the units. Furthermore, coordination of DGs and the reactive power compensators is considered to avoid power losses and voltage fluctuation. IEEE 33 bus distribution network is considered as test system and simulations are performed. The results show that the voltage profile is improved with reactive power support of DGs and proposed method is successful in voltage control of the system. Nomenclature= maximum allowed converter current = maximum allowed rotor current = maximum allowed stator current = maximum allowed converter voltage P = active power of DG = active power of rotor = active power of stator = reactive power capability of DG = reactive power limit caused by converter current = reactive power limit caused by converter voltage s = slip = grid voltage at the point of common coupling X = total equivalent reactance = mutual reactance = stator leakage reactance

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Centralized Control of System Voltage/Reactive Power Using Genetic Algorithm

Cited by 13 publications

References 8 publications

Coordinated Voltage Control With Online Energy Margin Constraints

Coordinated Voltage Control With Online Energy Margin Constraints

Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part I: Principal

Coordination of Inverter-Based Distributed Generation Units and Reactive Power Compensators in Power Systems

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