Corrective Measures in Islanding Scheme at Bhusawal Thermal Power Station - Case Study

2012 ◽  
Vol 13 (2) ◽  
Author(s):  
Makarand Sudhakar Ballal ◽  
Hiralal M. Suryawanshi
Keyword(s):  
Power Systems ◽  
Power System ◽  
Thermal Power Station ◽  
Dynamic Performance ◽  
Thermal Power ◽  
Synchronous Generators ◽  
Power Station ◽  
Power System Restoration ◽  
Restoration Time ◽  
System Restoration

System islanding is often considered as the final stage of power system defense plans. The goal is to preserve stable areas of the faulted power systems. The islanding scheme plays an important role in the power system restoration phase as it can make the power system restoration less complex and reduce the overall restoration time. The basis for islanding is not standard but rather depends upon the nature of the utility. Even though the formation of islands is dominated by geographical proximity of the synchronous generators to maintain generation-load balance, there are some factors which can assist in designing a better islanding scheme. These factors are the type and location of the fault and the dynamic performance of every island on the system against the fault. This paper present the application of islanding scheme and its performance operation for the scheme commissioned at 132 kV Deepnagar Bhusawal Thermal Power Station (BTPS). The methods and constraints of islanding scheme are discussed in details. Case studies regarding performance of islanding scheme are also described.

scholarly journals Power System Restoration Using Multilayer Perceptron

2021 ◽  
Vol 1 (1) ◽  
pp. 10-14
Author(s):  
Deepak Kumar
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electricity Market ◽  
Multilayer Perceptron ◽  
Transmission Network ◽  
Economic Competition ◽  
Power System Restoration ◽  
Multilayer Perceptron Network ◽  
System Restoration ◽  
Power Needs

In recent years, power systems are being operated nearer to their limits due to economic competition and deregulation. Also, nowadays the challenge is to include large and ever increasing amounts of decentralized generated power into the existing transmission network and at the same time comply with the electricity market transmission demands. Both factors increase the risk of blackout. After which, power needs to be restored as quickly and reliably as possible and, accordingly, detailed power system restoration plans are required. The multilayer perceptron network is chosen for a more precise examination.

scholarly journals Robust Coordinated Design of Power System Stabilizer and Excitation System Using Genetic Algorithm to Enhance the Dynamic Stability of Al-Zara Thermal Power Station Generation in Syria

2012 ◽  
Vol 23 (1) ◽  
pp. 59-81
Author(s):  
Riad Al-Mustfa Riad Al-Mustfa
Keyword(s):  
Genetic Algorithm ◽  
Power System ◽  
Thermal Power Station ◽  
Thermal Power ◽  
Operating Conditions ◽  
Power System Stabilizer ◽  
Power Station ◽  
Excitation System ◽  
Large Perturbation ◽  
System Stabilizer

In this paper, a new formula of Power System Stabilizer (PSS) was adopted. The design of PSS and Excitation system (an Exciter) parameters is formulated as an optimization problem. A continuous genetic algorithm (GA) is employed for searching optimized parameters. A multi-objective function includes the deviation in the oscillatory rotor speed of the generator is minimized in time-domain to improve the stability performance of the system. The design is performed using linearized models of a real thermal power system, Al-Zara Thermal Power Station in Syria, at four operating conditions and large perturbation. A cubic Hermite interpolation technique is employed to determine the smoothest possible curve that passes through its data set obtained by the GA. The effectiveness and robustness of the designed stabilizer is investigated and compared with conventional PSS. The simulation results show that the GA stabilizer (GAPSS + GAExciter) are able to provide better damping over a wide operating range with large perturbation and improve the overall systems’ performance.

scholarly journals Restoration Aid Expert System for Power Systems

2020 ◽  
Vol 152 ◽  
pp. 03008
Author(s):  
Heung-Jae Lee ◽  
Jung-Hyun Oh
Keyword(s):  
Expert System ◽  
Power Systems ◽  
Power System ◽  
Power Flow ◽  
Practical Application ◽  
Power Outage ◽  
Real Power ◽  
Power System Restoration ◽  
System Restoration ◽  
Flow Case

This paper propose an intelligent restoration aid system that assists the decision of power system operators for reliable and fast restoration processes when a blackout happened in massive power systems. This system consists of a topology processor and intelligent restoration aid system. The topology processor identifies the real-time embedded topology structure between power system facilities and determines the power outage section. The power system restoration aid system determines the feasible restoration path in terms of overloads and real power flow. Case studies demonstrate a promising possibility of practical application.

scholarly journals Collaborative Optimization of Post-Disaster Damage Repair and Power System Operation

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2611 ◽  
Author(s):  
Han Zhang ◽  
Gengfeng Li ◽  
Hanjie Yuan
Keyword(s):  
Power Systems ◽  
Power System ◽  
Collaborative Optimization ◽  
System Operation ◽  
Power System Operation ◽  
Power System Restoration ◽  
Damage Repair ◽  
Proposed Model ◽  
System Restoration ◽  
Post Disaster

After disasters, enhancing the resilience of power systems and restoring power systems rapidly can effectively reduce the economy damage and bad social impacts. Reasonable post-disaster restoration strategies are the most critical part of power system restoration work. This paper co-optimizes post-disaster damage repair and power system operation together to formulate the optimal repair route, the unit output and transmission switching plan. The power outage loss will be minimized, with possible small expense of damage repair and power system operation cost. The co-optimization model is formulated as a mixed integer second order cone program (MISOCP), while the AC-power-flow model, the complex power system restoration constraints and the changing processes of component available states are synthetically considered to make the model more realistic. Lagrange relaxation (LR) decomposes the model into the damage repair routing sub problem and the power system operation sub problem, which can be solved iteratively. An acceleration strategy is used to improve the solving efficiency. The proposed model and algorithm are validated by the IEEE 57-bus test system and the results indicate that the proposed model can realize the enhancement of resilience and the economic restoration of post-disaster power systems.

Sustained Overvoltage Control Considering Power System Restoration Dynamic Process

2014 ◽  
Vol 986-987 ◽  
pp. 577-580
Author(s):  
Bin Chen ◽  
Hong Tao Wang ◽  
Zhong Kang Wei ◽  
Chun Yi Wang
Keyword(s):  
Power System ◽  
Dynamic Process ◽  
Safety Margin ◽  
Current Situation ◽  
Simulation Test ◽  
Power System Restoration ◽  
Restoration Time ◽  
System Restoration ◽  
Voltage Violation

Changeable sensitivity and safety margin are proposed in this paper, which can avoid the voltage violation according to the operation of the current situation. A simulation test is presented to demonstrate the proposed method can decrease adjusting amounts and restoration time efficiently.

scholarly journals Application hybrid GSAPSO Technique for AGC in Inter Connected Power System with Generation Rate Constant

2022 ◽  
Vol 20 ◽  
pp. 271-288
Author(s):  
Pabitra Mohan Dash ◽  
Asini Baliarsingh ◽  
Sangram Keshori Mohaptra
Keyword(s):  
Power Systems ◽  
Power System ◽  
Rate Constant ◽  
Dynamic Performance ◽  
Thermal Power ◽  
Robustness Analysis ◽  
Optimization Techniques ◽  
Generation Rate ◽  
Initial Attempt ◽  
Dynamic Performance Analysis

An attempt has been taken in this work to effectively implement the combination of GSA and PSO (hGSA-PSO) technique towards AGC in two-area inter-connected power systems with generation rate constraint (GRC) is considered. For the design and analysis, a initial attempt has been taken to optimize parameters of proportional-integral-derivative (PID) controller in two area non-reheat thermal power system employing GSA and hGSA-PSO algorithm with ITAE objective function. A sensitivity studies carried out for the robustness of the system by changing the operating condition and variation of the parameter and generation rate constant (GRC= ±0.05 and ±0.025) is considered. The performances of the proposed controller has been evaluated with those of some previously published optimization techniques such as GA and BOFA based optimized controller parameters for the same power system. This study of the present work is extended to two area multi sources power system to test the robustness analysis of the system by comparing the hGSA-PSO optimized to PI controller with same structure of system by selecting with and without GRC for showing the dynamic performance analysis of the system in term of settling time and overshoot.

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