Hybrid transmission expansion planning and reactive power planning considering the real network uncertainties

2021 ◽  
Author(s):  
Hamdi Abdi ◽  
Mansour Moradi ◽  
Reza Rashidi
Keyword(s):  
Reactive Power ◽  
The Real ◽  
Real Network ◽  
Expansion Planning ◽  
Transmission Expansion Planning ◽  
Transmission Expansion ◽  
Hybrid Transmission ◽  
Reactive Power Planning

scholarly journals Renewable Generation and Transmission Expansion Planning Coordination with Energy Storage System: A Flexibility Point of View

2021 ◽  
Vol 11 (8) ◽  
pp. 3303
Author(s):  
Mohammad Reza Ansari ◽  
Sasan Pirouzi ◽  
Mostafa Kazemi ◽  
Amirreza Naderipour ◽  
Mohamed Benbouzid
Keyword(s):  
Energy Storage ◽  
Power Flow ◽  
Wind Farm ◽  
Reactive Power ◽  
Wind Farms ◽  
Expansion Planning ◽  
Transmission Expansion Planning ◽  
Transmission Expansion ◽  
Ac Power ◽  
The Impact

This paper presents a method for coordinated network expansion planning (CNEP) in which the difference between the total cost and the flexibility benefit is minimized. In the proposed method, the generation expansion planning (GEP) of wind farms is coordinated with the transmission expansion planning (TEP) problem by using energy storage systems (ESSs) to improve network flexibility. To consider the impact of the reactive power in the CNEP problem, the AC power flow model is used. The CNEP constraints include the AC power flow equations, planning constraints of the different equipment, and the system operating limits. Therefore, this model imposes hard nonlinearity onto the problem, which is linearized by the use of first-order Taylor’s series and the big-M method as well as the linearization of the circular plane. The uncertainty of loads, the energy price, and the wind farm generation are modeled by scenario-based stochastic programming (SBSP). To determine the effectiveness of the proposed solution approach, it is tested on the IEEE 6-bus and 24-bus test systems using GAMS software.

scholarly journals A Novel Methodology for Optimal SVC Location Considering N-1 Contingencies and Reactive Power Flows Reconfiguration

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6652
Author(s):  
Diego Carrión ◽  
Edwin García ◽  
Manuel Jaramillo ◽  
Jorge W. González
Keyword(s):  
Power Systems ◽  
Large Scale ◽  
Reactive Power ◽  
Voltage Profile ◽  
Expansion Planning ◽  
Transmission Expansion Planning ◽  
Transmission Expansion ◽  
Ac Power ◽  
The Stability ◽  
Line Switching

In this research, an alternative methodology is proposed for the location of Static VAR Compensators (SVC) in power systems, considering the reconfiguration of reactive power flows through the optimal switching of the transmission stage, which resembles the contingency restriction N-1 usually considered in transmission expansion planning. Based on this methodology, the contingency index was determined, which made it possible to determine which is the contingency that generates the greatest voltage degradation in the system. For the quantification of reactive flows, optimal AC power flows were used, which minimize the operating costs of the power system subject to transmission line switching restrictions, line charge-ability, voltages and node angles. To determine the node in which the compensation should be placed, the contingency index criterion was used, verifying the voltage profile in the nodes. The proposed methodology was tested in the IEEE test systems of 9, 14 nodes and large-scale systems of 200, 500 and 2000 bus-bars; to verify that the proposed methodology is adequate, the stability of the EPS was verified. Finally, the model allows satisfactorily to determine the node in which the SVC is implemented and its compensation value.

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