scholarly journals ANALISIS KINERJA PMS REL 2 BAY TRAFO 6 MENGGUNAKAN THERMOVISION METHODE DI GARDU INDUK SUNYARAGI

Foristek ◽  
2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Agus Siswanto ◽  
Reza Alfian ◽  
Erfan Subyanta
Keyword(s):  
Power System ◽  
Contact Resistance ◽  
Electric Power ◽  
Electrical Power ◽  
Good Condition ◽  
Peak Load ◽  
Electrical Energy ◽  
Electric Power System ◽  
Electrical Power System ◽  
T Phase

In an effort to provide reliable and efficient electrical energy, substations have an important role in regulating the demand for electric power loads and as a center for securing electrical power system components in a certain area. Frequent disturbances become a benchmark for an electric power system whether or not it is good or not in an effort to provide reliable and efficient energy. One of the maintenance measures is temperature measurement using thermal imagers, which is commonly referred to as thermovision measurement.Thermal imager is a tool that can be used for predictive maintenance activities to monitor the condition and performance of an equipment so that the possibility of equipment failure can be minimized. In October 2020, after thermovisiting transformer bay 6 at the Sunyaragi substation, it was discovered that there was a hotspot on the T-phase separation blade, causing heating of the blade, the above conditions can result in a decrease in PMS performance, with the worst condition if left alone can result in damage to the PMS blade and can also melt when the peak load is on the transformer 6. Under these conditions, maintenance is carried out by maintaining contact resistance, insulation resistance, and grounding resistance. The results of the analysis of contact resistance after maintenance show that the equipment is in good condition and still suitable for use, with a value of 7μΩ for the R phase, 6.5μΩ for the S phase, and 6.7μΩ for the T phase.

Integration of battery storage into the German electrical power system

2017 ◽  
Vol 59 (1) ◽  
Author(s):  
David Steber
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electrical Power ◽  
Electric Power System ◽  
Control Algorithms ◽  
Battery Storage ◽  
Electrical Power System ◽  
Development Scenarios ◽  
First Results ◽  
Storage Technologies

AbstractThe further integration of storage into the electric power system is unavoidable regarding the still increasing share of renewables and current market developments. Therefore a lot of different storage technologies are available today. The presented PhD-Thesis project will focus on integrating battery storage to the power system under different system and market conditions. Therefore, coupled control algorithms for single and virtual battery storage systems have to be developed depending on the battery's scope. For analyzing the reliability of different battery's scopes, the developed models will be integrated into an electric power system model for studying their influence on the power system and market concerning different development scenarios (renewables, nuclear phase-out). First actions dealt with the provision of Frequency Containment Reserve (FCR) power by a virtual battery storage under certain conditions in Germany. First results show appropriate working of implemented control algorithms and reliability for different shareholders.

scholarly journals Analysis of 6-Pulse and 12-Pulse in Conversion of the 115VAC/400Hz to 270 VDC for Application on Fighter

AVIA ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
D R Agustiningsih, E Suwondo, M Kusni
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electrical Power ◽  
Electric Power System ◽  
Pulse Transformer ◽  
Military Aircraft ◽  
Electrical Power System ◽  
Distortion Factor ◽  
Electric Aircraft ◽  
Pneumatic Power

The development of aircraft secondary power technology is moving from mechanical power, pneumatic power and hydraulic power to electric power. The trend toward electric power is known as More Electric Aircraft (MEA). Modern military aircraft are designed using 270VDC for electric power system. Today, some military aircraft still use 115VAC/400Hz for their electrical power system. If this type of aircraft need provides 270VDC electrical power, then they require Multi-Pulse Transformer Rectifier Unit (TRU). The development of this type TRU has not been aimed to comply with aircraft military standards. This research investigates the variation of the number of pulses (p) and firing angle (α) to the amplitude ripple voltage, output voltage, and distortion factor in order to comply with the MIL-STD-704F standards. The multi-pulse transformer rectifier unit being analyzed consists of 6-Pulse and 12-Pulse. The research shows that the amplitude ripple voltage and distortion factor of the 6-Pulse TRU do not comply MIL-STD-704F. The amplitude ripple voltage and distortion factor of 12-Pulse comply MIL-STD-704F with firing angle (α) ≤4°.Keywords: Transformer Rectifier Unit, thyristor, ripple voltage, distortion factor, firing angle

A DESIGN FOR A SUSTAINABLE ELECTRICAL POWER SYSTEM

2014 ◽  
Vol 10 (01) ◽  
pp. 55-67
Author(s):  
S. Z. STEFANOV ◽  
PAUL P. WANG
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electrical Power ◽  
Green Energy ◽  
Electric Power System ◽  
Electrical Power System ◽  
Maxwell’S Demon ◽  
Scheme Design ◽  
Maxwell's Demon ◽  
Synchronization Protocol

A sustainable electric power system (EPS) is designed in this paper. First, a protocol is given, via which Maxwell's demon transfers green energy into optimally secure and efficient EPS. Then a morphogenesis scheme (design) of a homeostatic demon is determined, so that the demon can achieve sustainable EPS stability. It is shown that synchronization protocol complicates the sustainable EPS and that the beneficial design transforms the sustainable EPS in a complex community. A sustainability test is introduced for the sake of coping with the issue in the sense the test serves to determine the EPS is indeed sustainable.

BASIN CONFIGURATION OF A SIX-DIMENSIONAL MODEL OF AN ELECTRIC POWER SYSTEM

2002 ◽  
Vol 12 (06) ◽  
pp. 1333-1356 ◽  
Author(s):  
YOSHISUKE UEDA ◽  
HIROYUKI AMANO ◽  
RALPH H. ABRAHAM ◽  
H. BRUCE STEWART
Keyword(s):  
Power Systems ◽  
Power System ◽  
Initial Conditions ◽  
Electrical Power ◽  
Practical Importance ◽  
Intervention Strategy ◽  
Basins Of Attraction ◽  
Electric Power System ◽  
Point Of View ◽  
Electrical Power System

As part of an ongoing project on the stability of massively complex electrical power systems, we discuss the global geometric structure of contacts among the basins of attraction of a six-dimensional dynamical system. This system represents a simple model of an electrical power system involving three machines and an infinite bus. Apart from the possible occurrence of attractors representing pathological states, the contacts between the basins have a practical importance, from the point of view of the operation of a real electrical power system. With the aid of a global map of basins, one could hope to design an intervention strategy to boot the power system back into its normal state. Our method involves taking two-dimensional sections of the six-dimensional state space, and then determining the basins directly by numerical simulation from a dense grid of initial conditions. The relations among all the basins are given for a specific numerical example, that is, choosing particular values for the parameters in our model.

A Review of the Smart Grid Concept for Electrical Power System

2022 ◽  
pp. 1361-1385
Author(s):  
Amam Hossain Bagdadee ◽  
Li Zhang
Keyword(s):  
Smart Grid ◽  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Smart Grids ◽  
Electrical Power ◽  
Future Generation ◽  
Electric Power Systems ◽  
Basic Information ◽  
Electrical Power System

The review this article conducts is an extensive analysis of the concept of a smart grid framework with the most sophisticated smart grid innovation and some basic information about smart grid soundness. Smart grids as a new scheme for energy and a future generation framework encourages the expansion of information and progress. The smart grid framework concord will potentially take years. In this article, the focus is on developing smart networks within the framework of electric power systems.

Multi-Objective Economic Emission Load Dispatch Solution Using Evolutionary Algorithm with and without Considering Wind Power Penetration and Valve Point Effect

2014 ◽  
Vol 626 ◽  
pp. 177-183
Author(s):  
K. Thenmalar ◽  
S. Ramesh ◽  
K.S. Anuja
Keyword(s):  
Quadratic Programming ◽  
Power System ◽  
Wind Power ◽  
Power Plants ◽  
Electrical Power ◽  
Electrical Energy ◽  
Fuel Cost ◽  
Electrical Power System ◽  
Bacterial Foraging Optimization ◽  
Multi Objective

The electrical power system is considered as the most complex man-made systems mainly due to their wide geographical coverage. Electrical energy industries contributes environmental pollution which rise questions concern environmental protection and methods of eliminating or reducing pollution from power plants either by design or by operational strategies. Electric power plants are mainly aimed to operate al low fuel cost strategies .In this paper a Multi –Objective Economic Emission Load Dispatch problem is solved to minimize the emission of nitrogen oxides (NOx) , oxides of other fuels that release during generation of electricity and fuel cost considering both Thermal generators and Wind turbines. A large number of iterations and oscillation are those of the major concern in solving the economic load dispatch problem by using the BFO(bacterial foraging optimization) method. By applying BFO method the economic dispatch problem is optimized to minimize the total generation cost of a power system while satisfying various equality and inequality constraints. The effect of Wind power on overall emission is also investigated here using Quadratic programming by wolf’s method. This method has better convergence characteristic. Wolf’s method is an extended simplex procedure which can be applied to Quadratic programming problems in which all the problem variables are non-negative.

scholarly journals Integrating Wind Electrical Energy for the Marine Electrical Power System

2019 ◽  
Vol 9 (1) ◽  
pp. 4413-4418
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Wind Energy ◽  
Wind Power ◽  
Electrical Power ◽  
Electrical Energy ◽  
Energy Output ◽  
Future Research ◽  
Electrical Power System ◽  
Bus System

Utilization of renewable energy for the reduction of fuel consumption and green house gas (GHG) emissions in the shipping industry has been increased rapidly in the recent years. Wind energy is a clean renewable energy with no pollution which is abundantly available at sea. This paper proposes two different possible configurations of connecting wind power energy into the ship’s main grid bus system . Wind electrical energy output has been connected to ship’s main ac bus system in one configuration and it is connected to ship’s main dc bus system. Even though Wind assisted ship propulsion (WASP) had been started already in the last decades in the form of wing sails, kites, Flettener rotor etc which could assist auxiliary propulsion of the ships, the application of wind power generator on the ship is not often applied. Therefore this paper has a relevant significance in applying wind electrical energy for the marine electrical power system needs. This paper also reveals the benefits and challenges in the area of onboard wind generation and opens future research possibilities in integrating wind energy into marine industry.

scholarly journals Impacts of Placement of Wind Turbine Generators on IEEE 13 Node Radial Test Feeder In-Line Transformer Fuse-Fuse Protection Coordination

2020 ◽  
Vol 5 (6) ◽  
pp. 665-674
Author(s):  
Kemei Peter Kirui ◽  
David K. Murage ◽  
Peter K. Kihato
Keyword(s):  
Power System ◽  
Short Circuit ◽  
Electrical Power ◽  
Distribution Network ◽  
Electrical Energy ◽  
Distribution Transformer ◽  
Electrical Power System ◽  
Turbine Generators ◽  
Wind Turbine Generators ◽  
Network Operations

The ever increasing global demand on the electrical energy has lead to the integration of Distributed Generators (DGs) onto the distribution power systems networks to supplement on the deficiencies on the electrical energy generation capacities. The high penetration levels of DGs on the electrical distribution networks experienced over the past decade calls for the grid operators to periodically and critically asses the impacts brought by the DGs on the distribution network operations. The assessment on the impacts brought by the DGs on the distribution network operations is done by simulating the dynamic response of the network to major disturbances occurring on the network like the faults once the DGs have been connected into it. Connection of Wind Turbine Generators (WTGs) into a conventional electrical energy distribution network has great impacts on the short circuit current levels experienced during a fault and also on the protective devices used in protecting the distribution network equipment namely; the transformers, the overhead distribution lines, the underground cables and the line compensators and the shunt capacitors commonly used/found on the relatively long rural distribution feeders. The main factors which contribute to the impacts brought by the WTGs integration onto a conventional distribution network are: The location of interconnecting the WTG/s into the distribution feeder; The size/s of the WTG/s in terms of their electrical wattage penetrating the distribution network; And the type of the WTG interfacing technology used labeled/classified as, Type I, Type II, Type III and Type IV WTGs. Even though transformers are the simplest and the most reliable devices in an electrical power system, transformer failures can occur due to internal or external conditions that make the transformer incapable of performing its proper functions. Appropriate transformer protection should be used with the objectives of protecting the electrical power system in case of a transformer failure and also to protect the transformer itself from the power system disturbances like the faults. This paper was to investigate the effects of integrating WTGs on a distribution transformer Fuse-Fuse conventional protection coordination scheme. The radial distribution feeder studied was the IEEE 13 node radial test feeder and it was simulated using the Electrical Transient Analysis Program (ETAP) software for distribution transformer Fuse-Fuse protection coordination analysis. The IEEE 13 Node radial test feeder In-line transformer studied is a three-phase  step down transformer having a star solidly grounded primary winding supplied at  and a star solidly grounded secondary winding feeding power at a voltage of . The increase on the short circuit currents at the In-line transformer nodes due to the WTG integration continuously reduces the time coordination margins between the upstream fuse F633 and the downstream fuse F634 used to protect the transformer.

scholarly journals RANCANG BANGUN SIMULASI DISPLAY ARUS GANGGUAN RELAI PROTEKSI SEL 551 DI MASTER STATION PADA SCADA SURVALENT SEBAGAI UPAYA MEMPERBAIKI SAIDI

2015 ◽  
Vol 18 (2) ◽  
Author(s):  
Dzulfikar Muhammad Azhar ◽  
Yuniarto Yuniarto
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Fault Location ◽  
Electrical Power ◽  
Electric Power System ◽  
Fault Current ◽  
Electrical Power System ◽  
Control Center ◽  
Current Value ◽  
Master Station

Dzulfikar Muhammad Azhar, Yuniarto, in this paper explian that disruption of the power distribution network of 20 KV greatly influence the level of reliability of electric power system. Localize interference by means of network down one by one causing a long recovery time. As a result, SAIDI relatively high value. Protection Relays 551 SEL has a feature that can save the nominal fault current value last received. The value stored in the relay memory. Value of fault current can be processed into the distance nuisance. Thus, the fault current value can help officers to track the fault location based on distance. SCADA as a system that monitors and controls the electrical power system equipment remotely in real time on duty to display the current value of disturbance located at 551 SEL protection relays to be sent to the Control Center or the Master Station. Keywords : SCADA, fault current, relay protection 551 SEL

Advance in Renewable Energy Using Piezoelectric Power-Harvesting Devices

2013 ◽  
Vol 310 ◽  
pp. 548-551
Author(s):  
Noorradiyah Ismail ◽  
Rasli Abd Ghani
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Electrical Power ◽  
Experimental Tests ◽  
Electrical Energy ◽  
System Structure ◽  
Electrical Power System ◽  
Power Harvesting ◽  
Piezoelectric Energy ◽  
Control Circuits

This paper presents a designing piezoelectric harvesting energy device by having mechanical stressWhole system of the designing must be verified and validated through extensive experimental tests. The system structure consists of controller circuit that uses to simulate the system and show the amount of voltage. This generated electrical energy can be harvested using the principle of piezoelectric energy conversion. The propose design is divided into three categories, which are designing the prototype, electronic part and mechanical part. Designing proper mechanisms for exciting the piezoelectric device is necessary also proper electronic control circuits must be designed and modeled. It is used before implementing to the energy storage using a typical bettery. The project gives a new idea to develop a renewable energy as an electrical power system that can generate a power from having a lot of force from people moving so that they would not only depend on the hydro and coal power system.

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