scholarly journals Sparsity-based error detection in DC power flow state estimation

2016 ◽  
Author(s):  
M.H. Amini ◽  
Mostafa Rahmani ◽  
Kianoosh G. Boroojeni ◽  
George Atia ◽  
S.S. Iyengar ◽  
...  
Keyword(s):  
State Estimation ◽  
Error Detection ◽  
Power Flow ◽  
Flow State ◽  
Dc Power

Error Detection of DC Power Flow Using State Estimation

2016 ◽  
pp. 31-51
Author(s):  
Kianoosh G. Boroojeni ◽  
M. Hadi Amini ◽  
S. S. Iyengar
Keyword(s):  
State Estimation ◽  
Error Detection ◽  
Power Flow ◽  
Dc Power

Harmonic Distortion and Power Flow State Estimation for Distribution Systems Based on Evolutionary Strategies

2015 ◽  
Vol 13 (9) ◽  
pp. 3066-3071 ◽  
Author(s):  
Walace do Nascimento Sepulchro ◽  
Lucas Frizera Encarnacao ◽  
Marcelo Brunoro
Keyword(s):  
State Estimation ◽  
Power Flow ◽  
Distribution Systems ◽  
Harmonic Distortion ◽  
Evolutionary Strategies ◽  
Flow State

Impacts of Short-Term Generation Rights Transaction on Transmission Loss for Power System

2013 ◽  
Vol 805-806 ◽  
pp. 1140-1147
Author(s):  
Mei Juan Xue ◽  
Li Xiao Yao ◽  
Jia Jun Liu ◽  
Feng Xin Yao
Keyword(s):  
Power System ◽  
Power Allocation ◽  
Power Flow ◽  
Transmission Loss ◽  
Spline Interpolation ◽  
Flow Equation ◽  
Flow State ◽  
Short Term ◽  
Practical Situation ◽  
Dc Power

This paper calculate the transmission loss caused by generation right trade and its impact on system based on the DC power flow equation. This method takes into account each power flow state and more accord with the practical situation of generation right trade. By analyzing the mechanism and process of generation right trade, to the unreasonable method that averagely allocate the trading power in trading hours under the daily generation right trade mode, this paper propose a method to fit a trading power allocation curve based on cubic spline interpolation and power system. The curve can be adjusted by trading power and replace the traditional averagely allocate method. Combined with three kinds of allocating situation, the rationality of this paper has been tested on IEEE-13 bus system.

scholarly journals A Full-Newton AC-DC Power Flow Methodology for HVDC Multi-Terminal Systems and Generic DC Network Representation

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1658
Author(s):  
Leandro Almeida Vasconcelos ◽  
João Alberto Passos Filho ◽  
André Luis Marques Marcato ◽  
Giovani Santiago Junqueira
Keyword(s):  
Power Systems ◽  
Direct Current ◽  
Power Flow ◽  
Large Scale ◽  
Flow Problem ◽  
Control Strategies ◽  
Problem Formulation ◽  
Expansion Planning ◽  
Dc Power ◽  
Power Flow Problem

The use of Direct Current (DC) transmission links in power systems is increasing continuously. Thus, it is important to develop new techniques to model the inclusion of these devices in network analysis, in order to allow studies of the operation and expansion planning of large-scale electric power systems. In this context, the main objective of this paper is to present a new methodology for a simultaneous AC-DC power flow for a multi-terminal High Voltage Direct Current (HVDC) system with a generic representation of the DC network. The proposed methodology is based on a full Newton formulation for solving the AC-DC power flow problem. Equations representing the converters and steady-state control strategies are included in a power flow problem formulation, resulting in an expanded Jacobian matrix of the Newton method. Some results are presented based on HVDC test systems to confirm the effectiveness of the proposed approach.

A Novel Interline DC Power-Flow Controller (IDCPFC) for Meshed HVDC Grids

2016 ◽  
Vol 31 (4) ◽  
pp. 1719-1727 ◽  
Author(s):  
Wu Chen ◽  
Xu Zhu ◽  
Liangzhong Yao ◽  
Guangfu Ning ◽  
Yan Li ◽  
...  
Keyword(s):  
Power Flow ◽  
Dc Power ◽  
Flow Controller ◽  
Power Flow Controller

Transmission Network Expansion Planning with Security Constraints and Uncertainty in Load Specifications

2008 ◽  
Vol 9 (4) ◽  
Author(s):  
Ashu Verma ◽  
Pradeep R. Bijwe ◽  
Bijaya Ketan Panigrahi
Keyword(s):  
Power Flow ◽  
Planning Problem ◽  
Transmission Network ◽  
Network Expansion ◽  
Security Issues ◽  
Expansion Planning ◽  
Dc Power ◽  
Sample Test ◽  
Binary Genetic Algorithm ◽  
Long Range Planning

Transmission network expansion planning is a very critical problem due to not only the huge investment cost involved, but also the associated security issues. Any long range planning problem is confronted with the challenge of non-statistical uncertainty in the data. Although large number of papers have been published in this area, the efforts to tackle the above mentioned security and uncertainty issues have been relatively very few, due to the formidable complexity involved. This paper tries to bridge this gap by proposing a technique to tackle these problems. Boundary DC power flow is used to ascertain the worst power flows on the lines. A simple basic binary Genetic algorithm is used to solve the optimization problem as an illustration. Results for two sample test systems have been obtained to demonstrate the potential of the proposed method.

scholarly journals Interval State Estimation of Distribution Network With Power Flow Constraint

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 40826-40835 ◽  
Author(s):  
Zhi Wu ◽  
Huiyu Zhan ◽  
Wei Gu ◽  
Shujiang Zheng ◽  
Bojiang Li
Keyword(s):  
State Estimation ◽  
Power Flow ◽  
Distribution Network ◽  
Estimation Of Distribution

scholarly journals Linear power-flow analysis method for AC-DC electric power networks

2021 ◽  
Author(s):  
Mohammadreza Vatani
Keyword(s):  
Power Systems ◽  
Linear Model ◽  
Power Flow ◽  
Linear Models ◽  
Power Converters ◽  
Power Balance ◽  
Balance Equations ◽  
Dc Power ◽  
Phase Angles ◽  
Dc Power Systems

AC-DC power systems have been operating more than sixty years. Nonlinear bus-wise power balance equations provide accurate model of AC-DC power systems. However, optimization tools for planning and operation require linear version, even if approximate, for creating tractable algorithms, considering modern elements such as DERs (distributed energy resources). Hitherto, linear models of only AC power systems are available, which coincidentally are called DC power flow. To address this drawback, linear bus-wise power balance equations are developed for AC-DC power systems and presented. As a first contribution, while AC and DC lines are represented by susceptance and conductance elements, AC-DC power converters are represented by a proposed linear relationship. As a second contribution, a three-step linear AC-DC power flow method is proposed. The first step solves the whole network considering it as a linear AC network, yielding bus phase angles at all busses. The second step computes attributes of the proposed linear model of all AC-DC power converters. The third step solves the linear model of the AC-DC system including converters, yielding bus phase angles at AC busses and voltage magnitudes at DC busses. The benefit of the proposed linear power flow model of AC-DC power system, while an approximation of the nonlinear model, enables representation of bus-wise power balance of AC-DC systems in complex planning and operational optimization formulations and hence holds the promise of phenomenal progress. The proposed linear AC-DC power systems is tested on numerous IEEE test systems and demonstrated to be fast, reliable, and consistent.

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