Abstract:In the new paradigm, electric power system development should provide a negotiation space mechanism between all players with the objective function to maximize payoff distributed to each player in the system. Uncertainty risk and operate effectively and efficiently become a high consideration for all players in the decision making processes to select an investment and power system operation. This paper deals with simultaneous and desentralized with multiple objectives scenario within a global framework. The planning mechanism is prepared on the basis of cooperative game theory. Its coperative framework will encouraged an independently, distributed decision making in the competitive structure environtment. Main contributions of this paper are: a general model for power system planning in the form of cooperative game theory, and its time and spatial decomposition. This method will be implemented in Garver test system. Index Terms: power system planning, game theory, Shapley bilateral, coalition formation, static security IntroductionDecentralized policy of natural resources management, existing disparity of electric demand in sector classification and in regional level, also the needs for unbundling vertically integrated electric power business stimulate and modify significantly the process and mechanism in power system planning and development. Traditionally, electric power system planning was conducted as a centralized planning with the objective function to minimize investment and operation cost in a framework of welfare maximization for an established reliability services. In line with the restructuring of power industry, some research works have appeared on power system planning on the basis of competitive structure. Due to the the complexity of the problem itself, and some ambiguities in the policies regarding relationship between long-term planning horizon and day by day operations of deregulated power system, the models developed so far are not yet able to compatible to the needs of planners and policymakers.In the new paradigm, electric power system development should provide a negotiation space mechanism between all players with the objective function to maximize payoff distributed to each player in the system. Uncertainty risk and operate effectively and efficiently become a high consideration for all players, including independent power producers, transmission owners, independent system operators and consumers in the decision making to select an investment and power system operation. Consequently, power system planning deals with a decentralized planning with multiple objectives scenario within a global framework, and its planning mechanism should be able to evolve adaptively on a number of planning horizons.There have been a few research works on simultaneous generation and transmission expansion planning. Initial work conducted by incorporating the costs of generation and transmission facilities in a single objective formulation, that minimize total investment cost. A transportation models h...
This paper analyzes the effect of multiple Distributed Renewable Energy Generation penetration on improving the performance of the B3 feeder typical distribution system structure in Painan, Indonesia. Analysis uses a simple concept of load and distributed generation current injection at the distributed main, lateral and sublateral lines. The algorithm begins from completion of the main line variables, then uses an algorithm to complete the lateral line variables associated with the main line variable, and finally calls algorithms to resolve the sublateral variables associated with the lateral line variable. The results have shown that integrating three Distributed Renewable Energy Generation units to this distributed system has increased the minimum voltage of the main line from 17.35 kV to 20.37 kV, reduced active power loss from 1914.747 kW to 569.925 kW, and diminished reactive power loss from 650.747 kVAr to 188.624 kVAr.
The electric arc furnace can cause voltage flicker and produce harmonics that can impact the power system. This is due to the characteristics of electric arc furnace as a nonlinear load. Designing an electric arc furnace model is intended to study the characteristics of the electric arc furnace and its impact to the power system. The voltage flicker model of Chua's Chaotic Circuit and differential equations of the arc length will be used in the modeling of the electric arc furnace. In accordance with the purposes of this study, the model of electric arc furnace will be applied to the design and placement plan in the power system. Before applying the electric arc furnace model to the power system, the v-i characteristic of electric arc furnace, harmonics, flicker, and other preinstallation requirements will be studied as mentioned in the grid code.
Indonesia is an archipelago country consisting of five major islands and scattered of approximately 17,000 smaller islands. It is also the fourth most populous country in the world and has relatively high energy demand, especially for electricity. The Java-Bali system is the largest electricity system and the highest electricity demand in Indonesia but with a scarce energy resource. Meanwhile, the Sumatra system has a lower electricity demand but an abundant of available energy resources. Thus, in order to increase the national electrification ratio and the power supply in Java-Bali system, a ± 500 kV high voltage direct current (HVDC) system will be operated in 2018 to transfer 3000 MW from Sumatra island to Java Island through 504 km dc transmission line (including 40 km sea-cable) by a conventional type, i.e. Line Commutated Converter (LCC). This 3000 MW is produced from 6×600 MW coal power plant located in South Sumatra. The rest of this power will be transmitted to the Sumatra System. Sumatra system is relatively small compared to the 6×600 MW coal power plant and 3000 MW HVDC link that will be installed in Muara Enim 500 kV bus. Sumatra system with a lower effective short circuit ratio (ESCR) value (indicated weak AC system) than Java-Bali system will have a significant impacts with the operation of this Sumatra-Java HVDC link, which mean that Sumatra system is not strong enough from the system stability point of view. This paper describes the modelling and analysis of bipolar HVDC link between Sumatra and Java under steady state and transient conditions and also system impact study using DIgSILENT Powerfactory software packages.Simulation shows that faults which temporarily or permanently occur will disturb the HVDC power transfer from Sumatra to Java System. These faults such as a three-phase rectifier AC fault or a three-phase inverter AC fault that can cause a commutation failure or loss of an HVDC pole, can lead Sumatra system having a large and poorly damped power and voltage oscillation. Thus, this can lead to system instability. Unlike in Sumatra, the power transfer receiver side, Java HVAC network system, is very strong, because the HVDC inverter bus at X-Bogor is located around 500 kV network. Simulation also shows the effect of the biggest unit size generator trip and in Sumatra and Java System. Some defense schemes such as isolating the new 6 x 600 MW coal power plants through 500 kV Muara Enim bus splitting, 500/275 kV inter bus transformer tripping and also generators tripping can reduce the fault impacts.
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