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Transmission congestion is a major economic and reliability concern in today's electric power systems. However, as the industry undergoes changes, it becomes critically important to better understand the fundamental role of transmission and its technical and financial effects on the electricity provision. Thermal limits, voltage drop regulation, and voltage stability limits are among the most common...
Recently, a massive focus has been made on demand response (DR) programs, aimed for electricity price reduction, transmission lines congestion resolving, security enhancement and improvement of market performance. The paper develops a method for optimally selecting the locations of DR programs in the network together with their capacities to achieve the maximum technical benefits derived from the...
Recently, the deregulation and liberalization in power market increase the competition in retail and power sector. Therefore, power company needs to reduce operational cost and maximizes the profit by operating generator with higher efficiency. On the other hand, energy consumption is increasing rapidly due to the proliferation of all-electric houses. So the controllable load such as electric water...
Distribution factors have been used to identify the contributions of the transmission users towards line flows in an electricity market. They are the basis of transmission usage charges in many cases more fairly. However, the existing distribution factors still have various limitations which prevent the wider application of this technique in electricity market practices. In this paper, a new technique...
In many countries, the electric power system and market interconnection is undergoing. Especially in Europe, there is a large interconnection project aiming pan-European power market. ETSO and Europex charged to develop harmonization of network access rules propose flow-based market coupling to manage cross-border congestion. In this methods, Power transmission distribution factor (PTDF) is used to...
This paper proposes a method for choosing the best transmission system expansion plan(TSEP) using nodal/bus delivery marginal rate criterion (BMRk) defined newly in this paper. The objective method minimizes a total cost which is an investment budget for constructing new transmission lines subject to the BMRk which means a nodal deterministic reliability level requirement at specified load point....
In the deregulated environment, in order to sustain a regional electricity business, transmission restructuring is necessary. In transmission construction, the system stability, environmental problems and the economy must all be considered. Therefore, the purpose of this paper is to propose a new transmission planning prioritization method using a Pareto optimal set as a multi-objective evaluation...
This paper explains the way in which the current U.S. electric system contains insufficient incentives for long-term investments in transmission. Moreover, it highlights some key issues that should be considered to improve these investment incentives. The paper shows that, under the current U.S. transmission system, independent merchant investors, transmission rights' holders, and generation firms...
The possibility for market participants to place their bids in all the markets of an interconnection irrespective of where they are physically connected is investigated in this paper. A mechanism is proposed for managing the resulting congestion. It consists in iteratively sharing the transmission line capacities between the different market operators based each time on their present schedules. The...
This paper aims at understanding and assessing the main methods proposed by ETSO and EuroPEX to define and allocate interconnection capacities in Europe. We model these methods and evaluate their technical and economic efficiency on a 7-node network. We find first, that, unsurprisingly, the allocation methods are all the more efficient as the Kirchhoff laws are integrated more precisely in the market...
A new method for transmission line expansion planning using the branch and bound method is presented in this paper. Some candidate alternatives should be chosen in the beginning of planning procedures. To obtain the economical optimal scheme, all of these candidate alternatives should be considered, so this paper gave a concept of the planning set for describing all elements such as the transmission...
This investigation focuses on development of new methodologies for implementing power systems optimization for forecasting Location Marginal Prices (LMP) in deregulated electricity markets. The proposed approach uses the LMP method to show relationships between generator bids, power system constraints, and electricity demand. The proposed approach uses Unit Commitment, Economic Dispatch, and Optimal...
Transmission planning in the modern paradigm of deregulation is a delicate balancing activity. More reliable network structures may be needed to establish successful competitive electricity markets. This paper proposes a framework for evaluating transmission network expansion plans considering economic and supply reliability indices based on expected congestion cost (ECC) and expected outage cost...
In this paper, the contract path method and MW-mile method that are classified into the embedded cost method are addressed, and a new practical wheeling charging that resolves the existing disadvantages is proposed by using the identification method of transaction paths. By applying the proposed method that reflects the use of transmission systems, the wheeling charge that gives the incentive for...
Allocation of transmission loss between network users is a challenging and contentious issue in a fully deregulated system. Also, the cost of loss must be compensated in a fair manner by users which use the transmission network. Power flow tracing can find the extent of network usage by the users that can be used for loss allocation. In this paper, proportional tracing and optimal real power tracing...
This paper presents a direct transmission network cost allocation method by finding the coefficients of real and reactive power generations and load demands in the complex line flow. A mathematical model which clearly demonstrates the participation of each generator and each load in the line flow has been established. An attempt to calculate the locational marginal price (LMP) is done. Effectiveness...
This paper provides the evaluation method and model of the externality of the transmission projects, and identifies both negative and positive externalities, as well as makes quantitative and qualitative analysis of externality. In order to quantify the impact of transmission construction projects on the power flow distribution, power supply and demand, as well as the power price of the neighboring...
Transmission network was recognized as natural monopoly and almost everywhere subject to some kind of regulation in a restructured electricity market. The role of the transmission system is to provide an indiscriminate access for all market players along with an acceptable level of reliability and security. Regulating authorities have to decide about the augmentation investment. As an on going research...
This paper presents a backpropagation feed forward algorithm methodology for the problem of available power transfer capability calculations. The computation of ATC is very important to the transmission system security and market forecasting in a deregulated power systems. Based on the AC power distribution factor formulation of the problem, the inputs for the neural network are generator status,...
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