Combined FACTS and Microgrid-Based Congestion Management in Transmission Lines

2021 ◽  
pp. 1063-1073
Author(s):  
G. Ramesh ◽  
V. Ranjith Babu
Keyword(s):  
Transmission Lines ◽  
Congestion Management

scholarly journals Power Transmission Congestion Management Based on Quasi-Dynamic Thermal Rating

Processes ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 244 ◽  
Author(s):  
Yanling Wang ◽  
Zidan Sun ◽  
Zhijie Yan ◽  
Likai Liang ◽  
Fan Song ◽  
...  
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Power Transmission ◽  
Meteorological Data ◽  
Congestion Management ◽  
Alarm System ◽  
Transmission Congestion ◽  
Ieee Standard ◽  
Operation Risk ◽  
Operation Flexibility

Transmission congestion not only increases the operation risk, but also reduces the operation efficiency of power systems. Applying a quasi-dynamic thermal rating (QDR) to the transmission congestion alarm system can effectively alleviate transmission congestion. In this paper, according to the heat balance equation under the IEEE standard, a calculation method of QDR is proposed based on the threshold of meteorological parameters under 95% confidence level, which is determined by statistical analysis of seven-year meteorological data in Weihai, China. The QDR of transmission lines is calculated at different time scales. A transmission congestion management model based on QDR is established, and the transmission congestion alarm system including conductor temperature judgment is proposed. The case shows that transmission congestion management based on QDR is feasible, which improves the service life and operation flexibility of the power grid in emergencies and avoids power supply shortages caused by unnecessary trip protection.

scholarly journals Dynamic analysis of voltage angle droop controlled HVDC systems in curative congestion management scenarios

2019 ◽  
Vol 217 ◽  
pp. 01004
Author(s):  
Yang Zhou ◽  
Stefan Dalhues ◽  
Ulf Häger
Keyword(s):  
Power System ◽  
Dynamic Behavior ◽  
Transmission Lines ◽  
Power Flow ◽  
Congestion Management ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Management Scenarios ◽  
Hvdc System ◽  
Good Ability

The integration of the voltage-source converter based high voltage direct current (VSC-HVDC) system makes the set-point of its active power adaptive to the changes in the power flow, and contributes to the curative congestion management. To further exploit the dynamic behavior of a hybrid AC/DC power system in curative congestion management scenarios, this paper investigates a novel control scheme for voltage angle droop controlled HVDC (VAD-HVDC) systems. The proposed scheme to alleviate the circuit overload is estimated firstly by calculating the severity index when the power flow changes under N-1 situations. Then the voltage angle controlled HVDC system is applied on the modified IEEE 39-bus 10-machine test power system for the time-domain simulation. The dynamic behavior in the HVDC station validates that the VAD control can stabilize the DC voltage and possess a good ability against interference. In addition, the dynamic characteristics analysis on the AC transmission lines proves that the hybrid AC/DC system integrated with the VAD controlled HVDC system are in possession of good stability after the N-1 contingency event. The VAD controller employed in the HVDC system is capable of effective congestion management to mitigate the critical loadings on the transmission lines.

scholarly journals EFFECTIVE LOCATION OF THYRISTOR CONTROLLED PHASE ANGLE REGULATOR (TC-PAR) FOR CONGESTION MANAGEMENT

2013 ◽  
pp. 165-168
Author(s):  
SAURABH K. SINGH ◽  
V. P. RAJDERKAR
Keyword(s):  
Phase Angle ◽  
Transmission Lines ◽  
Electric Energy ◽  
Congestion Management ◽  
Optimal Location ◽  
Voltage Profile ◽  
System Sensitivity ◽  
Facts Devices ◽  
Improved Stability ◽  
Static Security

FACTS is one aspect of the power electronics revolution that is taking place in all areas of electric energy. FACTS devices can be an alternative to reduce the flows in heavily loaded lines, resulting in an increased loadability, low system loss, improved stability of the network, reduced cost of production and fulfilled contractual requirement by controlling the power flows in the network. This paper investigates a methodology for placement of thyristor controlled phase angle regulator (TCPAR) in order to relieve congestion in the transmission lines while increasing static security margin and voltage profile of a given power system. Sensitivity-Based Methodology is opted for finding the optimal location The effectiveness of the purposed methods is demonstrated on modified IEEE 30-bus system by using Power World Simulator Software version 12.0.

scholarly journals Congestion Management and Transmission Line Loss Reduction using TCSC and Market Split Based

2019 ◽  
Vol 8 (9S) ◽  
pp. 339-346
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Congestion Management ◽  
Transmission System ◽  
System Stability ◽  
Deregulated Power System ◽  
Congestion Effect ◽  
Flexible Alternating Current Transmission

Due to increasing power demand in a deregulated power system, the stability of the power system may get affected and sometimes it may also cause congestion in the transmission lines of power networks. It is a major issue for a deregulated power system and its management provides a competition environment to different market players. In this paper, market split based approach is used to tackle the problem of congestion which split the system into zones. Locational Marginal Pricing (LMP) method is used to access the prices at different buses. The objective is to minimize the congestion effect. DC optimal power flow based system is used to solve such type of problem. TCSC (Thyristor-Controlled Series Compensation), FACTS (Flexible Alternating Current Transmission System) device is used to reduce the losses in a transmission system. Market splitting based approach is effective to manage the prices at different buses and system stability is increased by using TCSC. The whole work is carried out on IEEE 14 bus system.

scholarly journals Simultaneous Placements of TCSC and VSCDG for Congestion Management

2020 ◽  
Vol 9 (5) ◽  
pp. 80-86
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Optimal Solution ◽  
Congestion Management ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Second Stage ◽  
Power Transmission Systems ◽  
Genetic Algorithm Method ◽  
Congested Systems

Relieving congestion is a major technical issue in power transmission systems. In this paper, simultaneous placement of Thyristor controlled series capacitors (TCSC) and Voltage source converter based distribution generators (VSC-DG) are used for relieving congestion, minimize system cost and maintain the system in secure state. The system has been analyzed in three stages: (i) first stage, the congestions are made in different transmission network by overload and line outages, (ii) second stage, relieving congestion of transmission lines by using TCSC and VSCDG, where these devices are placed simultaneously at their optimal locations, (iii) comparative cost analysis is done between normal and congested systems. The proposed approach is tested on the 62-bus Indian power system network. The optimal solution of the test systems are obtained by genetic algorithm method and its solutions are compared with primal linear programming. All the results are validated through Power World Simulator and GA toolbox in MATLAB.

scholarly journals Optimal Location of multi-type FACTS for Power System Security Enhancement

2019 ◽  
Vol 9 (2) ◽  
pp. 5345-5349
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Power Transmission ◽  
Transmission Loss ◽  
Optimal Parameter ◽  
Congestion Management ◽  
Optimal Location ◽  
Transmission Congestion ◽  
Facts Devices ◽  
Improved Stability

-Transmission congestion results from the contingencies in the power system and increasing load demand that has to be supplied through predetermined corridors in case of restructured environment. The Flexible AC Transmission Systems (FACTS) devices when deployed in a power system can result in improving the system performance in terms increased loading capability of transmission lines, reduction in losses, improved stability and security of the system by relieving stress on congested lines. This work deals with congestion management of the power transmission network by employing FACTS devices, with the help of Genetic Algorithm (GA) based optimization algorithm. Optimal location of FACTS placement and optimal parameter settings of these devices are the objectives for the optimization problem. The optimization process aims at maximizing the loading capability by the network by transferring power from overloaded lines to adjacent lightly loaded lines. FACTS devices considered are TCSC, SVC and UPFC for the alleviation of the overload on transmission lines and to reduce overall transmission loss of the system. An IEEE 30-bus system is used to illustrate the effectiveness of the proposed method.

scholarly journals Use of Hybrid Phase Shifter for Congestion Management in A Grid with RESs and EVs: Transmission Efficiency Benefit in Comparison with Phase Shifting Transformer

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Salah Eldeen Gasim Mohamed
Keyword(s):  
Transmission Lines ◽  
Power Flow ◽  
Phase Shifter ◽  
Renewable Energy Sources ◽  
Congestion Management ◽  
Transmission Efficiency ◽  
Test System ◽  
Phase Shifters ◽  
Phase Shifting ◽  
Facts Devices

Integration of renewable energy sources (RESs) and electric vehicles (EVs) to electric power grids is increasing. These RESs and EVs may introduce major problems to grid such as transmission lines congestion. Owing to the causative factors nature, congestion may regularly happen and continue forlong commulative time. Thus, transmission efficiency (TE) is a major factorwhen relieving congestion. Congestion can be relieved by using phase shifting transformers (PSTs), hybrid phase shifters (HPSs), or flexible AC transmission system (FACTS) devices. However, PSTs have technical drawbacks such as their large steps, which may result in increased losses, and FACTS devices cost is high. This paper investigates benefits of using an HPS rather than a PST in terms of TE. As HPS operates continuously, it provides more precise control of active power flow than PST. A modified IEEE-14 bus test system is used and a security margin is kept in each simulated case with HPS/PST. Results revealed higher TE when an HPS is used. Thus, RESs and EVs can be more optimally hosted with HPSs.

scholarly journals Linear Sensitivity Analysis and Series Compensation for Transmission Congestion Management

10.29007/1hvd ◽  
2018 ◽  
Author(s):  
Jalpa Jobanputra ◽  
Chetan Kotwal
Keyword(s):  
Transmission Lines ◽  
Power Flow ◽  
Reactive Power ◽  
Congestion Management ◽  
Test System ◽  
Shift Factor ◽  
Distribution Factor ◽  
Transmission Congestion ◽  
Series Compensation ◽  
Two Stages

Optimal utilization of transmission system without congestion in the network is most important as congestion can violet the security of the system. Sufficient amount of reactive power support needs to be provided in the system in order to maintain the power flow limits on transmission lines and voltage limits at bus bars. This Paper focuses on analysis of congestion occurrence with N-1 contingencies for line flow limits in case of line and generator outages using linear sensitivity factors and congestion management using series compensation. Generation shift factor and line outage distribution factor are used to find sensitive lines and series compensation in two stages are applied to the most sensitive lines to relieve congestion. Standard IEEE 6 bus test system is used to analyze contingencies and congestion mitigation. All the simulations are performed using power world simulator version 19.0. Mathematical calculations are also performed for the same 6-bus system for validation of results.

scholarly journals Transmission Congestion Management by using LMP Method in De-Regulated Electricity Market

2019 ◽  
Vol 8 (2S11) ◽  
pp. 2017-2020
Keyword(s):  
Electricity Markets ◽  
Transmission Lines ◽  
Electricity Market ◽  
Power Flow ◽  
Congestion Management ◽  
Test System ◽  
Alternative Methods ◽  
Transmission Congestion ◽  
Advantages And Disadvantages ◽  
Primal Dual

The power transmission network has the problem of management due to congestion in the open access system. Power flow due to transactions in transmission lines can cause overloads. This condition is known as congestion. There are several alternative methods for congestion management which are suitable for different electricity markets. In this paper the Locational Marginal Pricing (LMP) method is discussed for an assessment of transmission congestion management and results are obtained to manage the transmission congestion such as redispatching existing generators outside the congested area to supply power to the customer. The primal dual IP algorithm is used to calculate the LMP’s and congestion cost values. The proposed work has been implemented on a 14-bus test system to illustrate the advantages and disadvantages of this method

Sign in / Sign up

Export Citation Format

Share Document