Optimal Setting of Interline Power Flow Controller for Congestion and Contingency Management (original) (raw)
Related papers
Periodica Polytechnica Electrical Engineering and Computer Science, 2015
Contingency assessment is an essential task for the stable and reliable operation of a power system as it predicts the effect of outages in transmission lines and generator units. In this paper, a recurrence of severity based placement strategy for Interline Power Flow Controller (IPFC) has been proposed. Contingency ranking of the lines has been done using Composite Severity Index. A probabilistic based strategy has been adopted for the placement of IPFC. IPFC is placed on the line which has the highest probability of severity during the occurrence for different outages. To verify the proposed methodology, it has been tested on IEEE 14 and 30 bus system. The load on the bus with highest load is further increased gradually up to the critical value and the results have been presented and analyzed to ascertain the effectiveness of IPFC for contingency management.
Ain Shams Engineering Journal, 2015
As a result of privatization of the electrical industry the power transmission lines have to transfer power at their maximum transmission limits because of the competitive scenario of the electrical market. Hence, secured operation of power system has become one of the most important issues of modern era. In this paper, a probability of severity based placement strategy for Interline Power Flow Controller (IPFC) has been proposed based on Composite Severity Index (CSI). The composite severity index provides an exact measure of stress in the line in terms of mega watt overloading and voltage instability. IPFC is placed on the line which has the highest probability of severity during the occurrence of different outages. The IPFC has been tuned for a multiobjective function using Differential Evolution (DE) and the results have been compared with genetic Algorithm (GA). To verify the proposed method, it has been tested and implemented on IEEE 14 and 57 bus systems.
Contingency Selection and Ranking Approach for Power Systems
International Journal of Computing and Digital Systems
In this paper, an efficient technique based on ranking lines and generators outage contingencies according to their severity has been developed. The technique is based on a defined performance index (PI). The elements of this PI are obtained by calculating the generators and lines, outages distributing factors instead of repeating the load flow analysis. Results for the Saudi Electric Company (SEC) in the central operating area have been obtained with the proposed technique and are compared with those obtained by the conventional ac-dc load flow methods.
IJEER, 2015
In order to increase transmission line stability, control power flow and improve the security of transmission systems FACTS technology has been extensively employed. And these devices must be optimally placed in the transmission systems for their best usage. In this paper to control the congestion in the transmission lines we use DLUF (Disparity Line Utilization Factor) for the appropriate placement of IPFC. The difference between the percentages MVA utilization of each line connected to the same bus is determined by the DLUF. The IPFC is placed in the lines with maximum DLUF. Krill Herd Algorithm has been used for optimal tuning of IPFC for a multi objective function. The multi objective function comprises of minimization of active power loss, security margin, voltage deviation and capacity of installed IPFC. The effectiveness of proposed method is tested for IEEE-30 bus test system.
Power System Contingency Ranking Using Fast Decoupled Load Flow Method
Voltage instability is the phenomena associated with heavily loaded power systems. It is normally aggravated due to large disturbance. The Power system security is one of the significant aspects, where the proper action needs to be taken for the unseen contingency. In the event of contingency, the most serious threat to operation and control of power system is insecurity. Therefore, the contingency analysis is a key for the power system security. The contingency ranking using the performance index is a method for the line outages in a power system, which ranks the highest performance index line first and proceeds in a descending manner based on the calculated PI for all the line outages. This helps to take the prior action to keep the system secure. In this paper Fast Decoupled power flow method is used for the power system contingency ranking for the line outage based on the Active power and Voltage performance index. The ranking is given by considering the overall performance index, which is the summation of Active power and voltage performance index. The proposed method is implemented on a IEEE-14 bus system.
Inventions
In these post COVID times, the world is going through a massive restructuring which India can use to its benefit by attracting foreign industrial investment. The major requirement is a reliable and ecofriendly electrical power source. Of late, renewable energy sources have increasingly become popular as alternative source of electricity. They can provide immense aid in improving the reliability of the power system, when placed properly. The alternative integrated energy sources along with FACTS devices can provide a promising future for reliable power systems. In this paper, an effective location for the solar power unit and Interline Power Flow Controller using Line Severity Index is proposed in order to avoid contingencies. An Indian 62 bus system and IEEE 57 bus system are considered for the study. The Firefly algorithm is used to tune the IPFC in the Integrated Energy Systems scenario, for a dual objective function. The effect of placement of the solar unit and the optimized IPF...
Optimal Location of IPFC for Improving Power System Performance Using Cuckoo Search Algorithm
This paper presents a new scheme based on cuckoo search algorithm (CSA) for enhancing the performance of interline power flow controller (IPFC) under multiline transmission for reducing the transmission line congestion to a great extent. Optimal placement of IPFC is done by subtracting line utilization factor (SLUF) and CSA-based optimal tuning. The multi objective function consists of active power loss, security margin, bus voltage limit violation and capacity of installed IPFC. The multi objective function is tuned by CSA and the optimal location for minimizing the congestion in transmission lines is obtained. The simulation is performed using MATLAB for the case study using an IEEE 30-bus test system. The performance of CSA has been studied under different loading conditions and compared with two other optimization techniques such as particle swarm optimization (PSO) and differential evolution algorithm (DEA). The result shows that the proposed CSA outperforms the other two methods and it best suits the power system security.
Improved Transmission line Contingency Analysis Using Fast Decoupled Load Flow
2013
Contingency analysis technique is being widely used to predict the effect of outages in power systems, like failures of equipment, transmission line etc. The off line analysis to predict the effect of individual contingency is a tedious task as a power system contains large number of components. Practically, only selected contingencies will lead to severe conditions in power system like violation of voltage and active power flow limits. The process of identifying these severe contingencies is referred as contingency selection and this can be done by calculating performance indices for each contingencies. In this paper, the contingency selection by calculating two kinds of performance indices; active power performance index (PIP)
Sensitivity Based Network Contingency Ranking Using Newton Raphson Power Flow Method
In the area of power system planning and operation, contingency analysis plays an important role. In the present days, on-line security assessment is done by contingency ranking, with the help of various computer software, incorporating iterative method like Newton Raphson power flow for obtaining the magnitudes of different parameters. The motive of contingency ranking is to create a short list of potential contingencies quickly and rank them according to their severity in an accurate manner. In this paper sensitivity based wide performance index with respect to outage have been presented. The Newton-Raphson power flow results were used to construct two kinds of performance indices, namely the real power performance index and voltage performance index, which reflect the degree of severity of contingencies. Then full AC load flow was performed for each contingency case, to study the contingency effect. The effectiveness of the proposed method has been demonstrated by contingency screening and ranking on a standard 6-bus and IEEE 14-bus system.
Optimal Control Strategy to Alleviate Line Congestion in Power System using Bus Power Rescheduling
Journal of Electrical Systems, 2020
The Line flow limit is one of the major challenges faced by electric utilities. The prevailing load conditions cause congestion in transmission line. A decisive control action is essential to relieve the congestion by allowing the power to flow in a different route in the same system. The rerouting of power is possible by controlling the generation at a bus or controlling the load in such a way that the power is rerouted through the other lines present in the power system. In this paper, an attempt has been made to relieve the congestion using a sensitivity based direct method and Genetic algorithm (GA) based optimization technique, wherein the power flows in the transmission lines are maintained within the security limits by using both generation shifting and load control. GA is used to calculate the amount of generation and load control required for congestion management in the system. The results of the sensitivity based direct method for congestion management are compared with t...