Research on Dynamic Stability Improvement by Using STATCOM in Power System

2014 ◽  
Vol 960-961 ◽  
pp. 1124-1127
Author(s):  
Si Yu Li ◽  
Jia Dong Huang ◽  
Cui Ma
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Voltage Stability ◽  
Reactive Power ◽  
Stability Margin ◽  
Test System ◽  
Nonlinear Loads ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Unbalanced Loads

Nowadays, unbalanced loads or nonlinear loads produce a bad effect on the power quality of utility mains. Also, it is necessary for reactive power to be compensated because the most of industrial loads is inductive and make a lagging displacement power factor. Reactive power compensation utilizing STATCOM is one of the most important methods to improve power quality. In this paper, the technical feature of STATCOM is introduced and then a comparison with SVC is made. The effect of STATCOM on static voltage stability in power systems has been studied. Based on PSD-BPA software, effect of STATCOM is determined. Static voltage stability margin enhancement using STATCOM and SVC is compared in the modified IEEE 14-bus test system. Test results show very encouraging result.

scholarly journals ACTIVE POWER LOSS REDUCTION & STATIC VOLTAGE STABILITY MARGIN ENHANCEMENT BY AERIFORM NEBULA ALGORITHM

2017 ◽  
Vol 5 (10) ◽  
pp. 375-389
Author(s):  
K. Lenin
Keyword(s):  
Power Loss ◽  
Voltage Stability ◽  
Reactive Power ◽  
Stability Margin ◽  
Test System ◽  
Superior Performance ◽  
Static Voltage Stability ◽  
Optimal Reactive Power Dispatch ◽  
Voltage Stability Margin ◽  
Power Loss Reduction

In this paper, Aeriform Nebula Algorithm (ANA) has been used for solving the optimal reactive power dispatch problem. Aeriform Nebula Algorithm (ANA) is stirred from the deeds of cloud. ANA imitate the creation behavior, modify behavior and expand deeds of cloud. The projected Aeriform Nebula Algorithm (ANA) has been tested on standard IEEE 30 bus test system and simulation results shows clearly about the superior performance of the proposed Aeriform Nebula Algorithm (ANA) in reducing the real power loss and voltage stability has been enhanced.

scholarly journals REDUCTION OF ACTIVE POWER LOSS & STATIC VOLTAGE STABILITY MARGIN ENHANCEMENT BY VIRAL SYSTEM ALGORITHM

2020 ◽  
Vol 5 (12) ◽  
pp. 275-290
Author(s):  
K. Lenin
Keyword(s):  
Power Loss ◽  
Voltage Stability ◽  
Reactive Power ◽  
Stability Margin ◽  
Test System ◽  
Superior Performance ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Fitness Value ◽  
Feasibility Region

This paper presents Viral Systems Algorithm (VSA) for solving optimal reactive power problem. VSA have proven to be very efficient when dealing with problems of high complexity. The virus infection expansion corresponds to the feasibility region exploration, and the optimum corresponds to the organism lowest fitness value. Many available algorithms usually present weaknesses and cannot guarantee the optimum output for the problem in a bounded time. Projected Viral Systems Algorithm (VSA) has been tested on standard IEEE 30 bus test system and simulation results show clearly about the superior performance of the proposed Viral Systems Algorithm (VSA) in reducing the real power loss and static voltage stability margin (SVSM) index has been enhanced.

Static Voltage Stability Margin Enhancement Using Shunt Capacitor, SVC and STATCOM

2015 ◽  
Vol 781 ◽  
pp. 288-291 ◽  
Author(s):  
Natakorn Thasnas ◽  
Apirat Siritaratiwat
Keyword(s):  
Power Flow ◽  
Voltage Stability ◽  
Stability Margin ◽  
Test System ◽  
Stability Study ◽  
Flow Process ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Shunt Compensation ◽  
Shunt Capacitor

This paper presents the study of static voltage stability margin enhancement using shunt capacitor, SVC and STATCOM. AC and DC representations of shunt compensation devices are used in the continuation power flow process in static voltage stability study. Various performance measures including PV curves, voltage profiles, and power losses are compared. Placement and sizing techniques of shunt compensation devices are proposed for loading margin enhancement. The study has been carried out on the IEEE 14 bus test system.

scholarly journals REAL POWER LOSS MINIMIZATION AND MAXIMIZATION OF STATIC VOLTAGE STABILITY MARGIN BY HYBRIDIZED ALGORITHM

2017 ◽  
Vol 5 (7) ◽  
pp. 506-519
Author(s):  
K. Lenin
Keyword(s):  
Reactive Power ◽  
Stability Margin ◽  
Bat Algorithm ◽  
Test System ◽  
Exploration And Exploitation ◽  
Loss Minimization ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Reactive Power Dispatch ◽  
Power Problem

This paper presents a new Hybridized Algorithm (HA) for solving the multi-objective reactive power dispatch problem. Inspired by Genetic Algorithm (GA), Particle Swarm Optimization (PSO) & the Bat Algorithm (BA), the HA was designed to retain some advantages of each method to improve the exploration and exploitation of the search. Scrutinizing PSO and BA reveals some differences, in that BA rejects the historical experience of each individual’s own position but admits an improved personal solution with some probability. We will adjust some of the updating mechanisms of BA and add a mutation method in order to try to solve reactive power problem more accurately. Proposed (HA) algorithm has been tested on standard IEEE 30 bus test system and simulation results shows clearly about the good performance of the proposed algorithm.

scholarly journals Transmission congestion management considering voltage stability margin

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Nilesh K. Patel ◽  
Bhavik N. Suthar ◽  
Jalpa Thakkar
Keyword(s):  
Power Generation ◽  
Voltage Stability ◽  
Reactive Power ◽  
Stability Margin ◽  
Congestion Management ◽  
Test System ◽  
Optimization Techniques ◽  
Voltage Profile ◽  
Transmission Congestion ◽  
Voltage Stability Margin

AbstractThis paper presents a solution for the transmission congestion management considering voltage stability issues using optimal generation rescheduling. While practicing congestion management using optimization techniques, the control variables remain under their upper or lower limits but it may lead to the lowered level of voltage security after optimization. To counterbalance this adverse effect, a modified objective function has been used. The reactive power generation rescheduling and reactive support from capacitors have been incorporated along with active power generation rescheduling to manage congestion as well as to improve the network voltage stability margin. The Random Inertia Weight Particle Swarm Optimization (RANDIW-PSO) algorithm has been employed in this paper to obtain optimized solutions. The proposed methodology is tested on the New-England test system for different realistic scenarios. The results confirm a noteworthy decline in congestion cost along with the improvement in network voltage stability margin. Moreover, system performance has been improved in terms of system power losses, increased reactive power reserve at generators and voltage profile.

scholarly journals VORTEX OPTIMIZATION ALGORITHM FOR SOLVING OPTIMAL REACTIVE POWER DISPATCH PROBLEM

2018 ◽  
Vol 6 (1) ◽  
pp. 266-276
Author(s):  
K. Lenin
Keyword(s):  
Reactive Power ◽  
Solution Space ◽  
Stability Margin ◽  
Solution Procedure ◽  
Problem Solution ◽  
Static Voltage Stability ◽  
Optimal Reactive Power Dispatch ◽  
Voltage Stability Margin ◽  
Vortex Nature ◽  
Power Problem

In this paper, a new Vortex Optimization (VO) algorithm is proposed to solve the reactive power problem. The idea is generally focused on a typical Vortex flow in nature and enthused from some dynamics that are occurred in the sense of Vortex nature. In a few words, the algorithm is also a swarm-oriented evolutional problem solution methodology; since it comprises numerous techniques related to removal of feeble swarm members and trying to progress the solution procedure by supporting the solution space through fresh swarm members. In order to evaluate the performance of the proposed Vortex Optimization (VO) algorithm, it has been tested in Standard IEEE 30 bus systems and compared to other standard algorithms. Simulation results reveal about the best performance of the proposed algorithm in reducing the real power loss and static voltage stability margin index has been enhanced.

scholarly journals Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Natakorn Thasnas ◽  
Apirat Siritaratiwat
Keyword(s):  
Optimal Power Flow ◽  
Voltage Stability ◽  
Stability Margin ◽  
Stability Index ◽  
System Stability ◽  
Line Voltage ◽  
Voltage Stability Index ◽  
Static Voltage Stability ◽  
Voltage Stability Margin ◽  
Stability Indices

Nowadays, the changes of economic, environment, and regulations are forcing the electric utilities to operate systems at maximum capacity. Therefore, the operation and control of power system to improve the system stability has been receiving a great deal of attention. This paper presents an approach for enhancing the static voltage stability margin and reducing the power losses of the system with voltage security-constrained optimal power flow (VSC-OPF) that is based on static line voltage stability indices. The control approaches incorporate the voltage stability criteria into the conventional OPF. The minimization of the summation of fast voltage stability index (FVSI), line stability index (Lmn), and line voltage stability index (LVSI) is used as the objective functions. The performance and effectiveness of the proposed control approaches are evaluated on the standard IEEE 30-bus, 57-bus, and 118-bus test systems under normal and contingency conditions. The comparison analysis is carried out with different cases including minimization of generation cost. The proposed control approaches indicate the promising results and offer efficient countermeasures against the voltage instability of the system.

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