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 Mitigating Congestion in a Power System and Role of FACTS Devices

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Madhvi Gupta ◽  
Vivek Kumar ◽  
Gopal Krishna Banerjee ◽  
N. K. Sharma
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Thermal Loading ◽  
Power Transmission ◽  
Maximum Load ◽  
Congestion Management ◽  
Transmission System ◽  
Transmission Congestion ◽  
Facts Devices ◽  
Transfer Capability

Congestion management refers to avoiding or relieving congestion. In transmission lines, congestion management is one of the most important issues for the reliable operation of power system in the deregulated environment. Restructuring has brought considerable changes in all possible domains including electric supply industry. By virtue of restructuring, electricity has now become a commodity and has converted into a deregulated one. The traditional regulated power system has now become a competitive power market. In the present scenario, the real time transmission congestion is the operating condition in which the transfer capability to implement all the traded transactions simultaneously is not enough due to either some expected contingencies or market settlement. Thus, congestion is associated with one or more violations of the physical, operational, and policy constraints under which grids operate. Thus, congestion management is about managing the power transmission and distribution among valuable consumers priority-wise. Placement of FACTS (Flexible Alternating Current Transmission System) devices for generation rescheduling and load-shedding play a crucial role in congestion management. FACTS devices are used to enhance the maximum load ability of the transmission system. FACTS increases the flexibility of power system, makes it more controllable, and allows utilization of existing network closer to its thermal loading capacity without jeopardizing the stability. FACTS technology can boost the transfer capability in stability limited systems by 20–30%. As a result, more power can reach consumers with a shorter project implementation time and a lower investment cost. This review work unites the various publications on congestion management in past few decades.

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 Power Transmission Lines Congestion Control with Proper Placement of Smart Wire

2019 ◽  
Vol 8 (9S) ◽  
pp. 617-621
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Transmission Lines ◽  
Power Transmission ◽  
Congestion Management ◽  
Voltage Profile ◽  
Distribution Factor ◽  
Transmission Congestion ◽  
Severe Problem ◽  
In Series

Congestion is severe problem that affects the power system security as it violates the various operating limits of the power system so congestion management is an important task for independent system operator. For managing congestion, smart wire module has been used in series with transmission line. When smart wire is connected in series with most congested line, there is improvement in voltage profile, reduction in transmission line loading and losses. Transmission Congestion Distribution Factor (TCDF) is calculated to know congestion in lines and congestion is managed with the help of smart wire module. It is observed that value of TCDF also reduced when smart wire is connected. Work has been carried out on IEEE 15 bus system on MATLAB.

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.

A Multi-objective Hybrid Heuristic Approach for Optimal Setting of FACTS Devices in Power System Operation

2016 ◽  
Vol 5 (3) ◽  
pp. 120
Author(s):  
Sai Ram Inkollu ◽  
Venkata Reddy Kota
Keyword(s):  
Power System ◽  
Power Flow ◽  
Transmission Loss ◽  
Search Algorithm ◽  
Gravitational Search Algorithm ◽  
Test System ◽  
Optimal Location ◽  
Voltage Profile ◽  
Loss Minimization ◽  
Facts Devices

<p>Improvement of power system performance in terms of increased voltage profile and decreased transmission loss is becoming one of the challenging tasks to the system operators under open access environment. Apart from traditional power flow controlling devices, use of Flexible AC Transmission System (FACTS) devices can give an attractive solution for the operation and control of deregulated power system. The type, size, location and number of FACTS devices are to be optimized appropriately in order to get the targeted benefits. In this paper, two FACTS devices, Thyristor Controller Phase Shift Transformer (TCPST) and Interline Power Flow Controller (IPFC) are selected to obtain the required performance such as improvement of voltage profile and loss minimization. To search the optimal location and optimal rating of the selected FACTS devices, a hybrid algorithm which formulated with Particle Swarm Optimization (PSO) and Gravitational Search Algorithm (GSA) is proposed. At the first step, the optimization problem is solved for finding the optimal location of FACTS devices using PSO with an objective of voltage profile maximization and later GSA is implemented to optimize their parameters with an objective of transmission loss minimization. The proposed method is implemented on IEEE 30-bus test system and from the simulation results it can be proved that this technique is well suited for real-time application.  </p><p align="center"><strong><br /></strong></p>

scholarly journals Optimal Placement of FACTS Controllers for Congestion Management in the Deregulated Power System

2018 ◽  
Vol 8 (3) ◽  
pp. 1336
Author(s):  
S. Surender Reddy
Keyword(s):  
Power System ◽  
Optimal Power Flow ◽  
Transmission Loss ◽  
Electrical Power ◽  
Congestion Management ◽  
Optimal Location ◽  
Optimal Placement ◽  
Total System ◽  
Electrical Power System ◽  
Facts Controllers

This paper proposes a methodology to determine the optimal location of Flexible AC Transmission System (FACTS) controllers for Congestion Management (CM) in the restructured electrical power system. An approach to find the optimum placement of Thyristor Controlled Phase Angle Regulators (TCPAR) and Thyristor Controlled Series Compensators (TCSC) has been proposed in this paper. The proposed methodology is based on the sensitivity of transmission loss which a controller is installed. The total system losses and the power flows are considered as the performance indices. The traditional optimal power flow (OPF) problem is modified to include the market players, who will compete and trade simultaneously, ensuring the system operation stays within the security limits. In this paper, pool and bilateral contracts are considered. Here, an integrated methodology is proposed that includes the FACTS Controllers in a bilateral contract framework to maintain the system security and to minimize the deviations from the contractual requirements. The simulation results on IEEE 30 bus system show that the sensitivity factors could be used effectively for the optimal location of FACTS controllers in response to the required objectives.

scholarly journals REVIEW PAPER ON OPTIMAL LOCATION OF SHUNT FACTS DEVICES BY EVOLUTIONARY PROGRAMMING BASED ON OPTIMAL POWER FLOW IN POWER SYSTEM.

2016 ◽  
pp. 196-199
Author(s):  
PRANALI H. DEKATE
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Power Transmission ◽  
Sensitivity Index ◽  
Voltage Profile ◽  
Computation Techniques ◽  
Facts Devices ◽  
Optimal Power

The modern power system is operating closed to its voltage and thermal instability limits. The present transmission network was not originally planned for heavy power trading in the market. The time is to maximize the utilization of existing transmission lines and to manage the congestion. FACTS (Flexible AC transmission system) devices are having capability of improving power transmission, improving voltage profile, minimizing power losses, etc. This paper presents a review on how FACTS devices are used to provide the maximum relief to the congested line by computation techniques. The proposed paper uses sensitivity index to locate FACTS devices optimally. These computation techniques are used solve the OPF (Optimal Power Flow) problems on various IEEE buses.

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