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Disturbance to the electric power system often occurs with different impact. Those power system disturbances cannot be avoided but it can be mitigated by having a premeditated action which refers to the risk assessment. This paper presents the bootstrap technique that used to assess the risk of a power system at every uncertainty level of system states and load variations. In addition, the risk based...
This paper presents a new optimization approach for tuning conventional PID controller parameters of a static var compensator (SVC) which controls a synchronous machine. SVC is designed and implemented to improve the damping of a synchronous generator. Particle Swarm Optimization (PSO) method based PID controller using SVC is implemented in this study. The study involves the optimization of proportional...
There are various approach used to prevent from the occurrence of power system blackout in order to ensure the sustainability and efficiency of energy supply. Generally, power system blackout can be mitigated by referring to the risk assessment of a power system. This paper presents the risk assessment of a power system performed by using the proposed bootstrap technique and the fuzzy set technique...
Distributed Generation (DG) has gained increasing popularity as a viable element of electric power systems. DG as a small scale generation sources located at or near load center is usually deployed within the distribution system. Presence of DG has many positive impacts such as reducing transmission and distribution network congestion, differing costly upgrades, and improving the overall system performance...
Application of the viable technologies in the new millennium has discovered successfulness in reducing undesirable problems related to power system operation. The advent of computational intelligence methods are mostly assisting to achieve high efficiency for controlling the changing of sophisticated process flow in industrials. Congestion problem in power system is a crucial issue as it leads to...
Providing high security and reliability for a power system is compulsory for a transmission service provider (TRANSCO) as this will affect the performance in terms of stability and economy. This can only be achieved by means of ancillary services like reactive power provision. However, to cover the cost of supplying such services, determination of appropriate methods for allocating the cost to consumers...
This paper presents Evolutionary Programming (EP) based optimization technique for estimating PI controller parameters of a static var compensator (SVC) which controls a synchronous machine. SVC is one type of Flexible AC Transmission Systems (FACTS) device, designed and implemented to improve the damping of a synchronous generator, as well as controlling the system voltage. This paper introduced...
A new method to select suitable generators for the purpose of power scheduling has been proposed in this paper, namely Fast Voltage Stability Index Generation Tracing (FVSI-GT). Contrary to previous power tracing techniques which select the generators based on the magnitude of traced power, the proposed technique performs the generator selection based on the stability index contributed by individual...
The inability of traditional methods in providing fair and non-discriminatory transmission service pricing has attracted many researchers to streamline the existing methods, or invent some methods that can improve the weakness. Transaction based allocation like MW mile, contract path, and postage stamp allocation are the examples of traditional technique applied by many transmission service providers...
In deregulated power system, the only way to provide fair and non-discriminatory transmission service pricing is by applying electricity tracing methods. The weakness of conventional methods like transaction based allocation has resulted to inaccurate transmission cost allocation as the physical power system constraints are not taken into account; whereas the proportional sharing principle (PSP) based...
Effective and efficient management of voltage and reactive power devices is one of the most challenging tasks in power grid operation especially in a large power grid. A Coordinated Voltage Control (CVC) approach that consists of primary voltage control (PVR), secondary voltage control (SVR) and tertiary voltage control (TVR) is the most effective solutions for reactive power and voltage control....
The determination of available transfer capability (ATC) must accommodate a reasonable range of transmission reliability margin (TRM) so that the transmission network is secure from uncertainty that may occur during a power transfer. This paper presents a computationally accurate method in determining the TRM with large amount of uncertainty using the parametric bootstrap technique. The parametric...
There are various types of method applied for allocating reactive power usage charge among generators and loads, and the most frequent techniques are transaction based charge allocation, sensitivity analysis and reactive power tracing. Studies have revealed that application of power tracing in reactive power market has reflected an acceptable economic signal and in virtue of that, this paper proposes...
In this paper, a heuristic DG optimization technique for radial distribution feeders is proposed. Significant search space reductions obtained through a small number of DG tests is offered. A sufficient sensitivity test analysis applicable for DG applications is proposed. Sample test system is examined using the proposed technique and the results are compared with those obtained via other method....
This paper presents an intelligent-based sizing algorithm for the design of grid-connected photovoltaic (GCPV) system using artificial immune system (AIS). AIS had been used to select the optimal PV module and inverter from pre-developed PV module and inverter database such that the expected technical performance of the design could be optimized. The AIS had outperformed the genetic algorithm (GA)...
Transmission loss, voltage regulation and voltage drop are three main issues in distribution system. In recent years, distributed generations (DG) installation approaches have been addressed widely in many parts of the world. Depending on their operating characteristics and location, DG can significantly affect the power losses and voltage profile in distribution system. Thus, prior to the installation...
On account of the inability of transaction based charging method to provide fair and non-discriminatory transmission service pricing, tracing the flow of electricity becomes an essential part in deregulated power system and has attracted many researchers regarding on how to improve and streamline the method of charge allocation. The existing power tracing techniques still necessitate for an assumption...
Thunderstorm is a form of weather characteristic containing strong wind, lightning, heavy rain and sometimes snow or hail. It can be associated with a cloud type of cumulonimbus. Depending on its type, thunderstorm has great potential to produce serious damage to human life and property. Therefore, there are many sophisticated instrument used to record weather data such as Doppler radar and satellite...
This paper presents a new stochastic optimization technique for tuning conventional PI controller parameters of a static var compensator (SVC) which controls a synchronous machine. As a type of Flexible AC Transmission Systems (FACTS) device, SVC is designed and implemented to improve the damping of a synchronous generator. Computational intelligence technique based PI controller using SVC is implemented...
Total system losses of the power system relate to the reactive power management in the network. This paper presents a method to minimize the system losses by utilizing Reactive Power Planning (RPP) approach. In this technique, the control variables of RPP were formulated as an optimization problem and Multiagent Immune Evolutionary Programming (MAIEP) was engaged to determine the optimal solution...
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