Abstract
Future power systems will be based on the more active role of distribution system and its cooperation with transmission system. The main issue, which will appear in the network, is the congestion. Congestion management will become one of the crucial elements of power system operation since Distributed Energy Resources (DERs) will be playing a more important role in power systems. Moreover, the evolution also changed the character of the systems to be more dynamic—the need for precise description of power flow and shares of particular nodes in line flows will emerge. This paper presents the potential solution to the congestion management problem by using the active role of the distribution system, which may dismantle the congestions by offering flexibility services. The tools which will be indispensable in this process will be Power Flow Tracing (PFT) methods. The main goal of this paper is to present modification of PFT method and its possible applications. The correctness of the Modified Inage Domain (MID) method is verified. The identification, verification and possible applications of the new MID method are also shown in the paper. It has been proven that the new method may be used in applications of allocation of transmission cost and in application in modern power systems for advanced congestion management.
Highlights
The development of the electricity sector, especially Renewable Energy Sources (RES) and Distributed Energy Resources (DERs), is partially caused by the European legislative packages, which are setting valuable targets in different areas such as the European Union (EU) target of 32% of renewable energy in 2030 [1].investments in the sector are growing in popularity, due to its profitability and positive impact on society
Nowadays most of the Low Voltage (LV) and even Medium Voltage (MV) distribution grid is not being metered smartly; they are oversized to the parameters, which normally are not reached in peak of demand
Since the application of proposed methodology is rather restricted to balancing market or for use of transmission system operator, the Power Transfer Distribution Factors (PTDF) are treated as singular change in demand in considered node
Summary
The development of the electricity sector, especially Renewable Energy Sources (RES) and DERs, is partially caused by the European legislative packages, which are setting valuable targets in different areas such as the European Union (EU) target of 32% of renewable energy in 2030 [1]. Alongside the growth of generation from renewable sources, the future grid will have to be either interconnected by DC connections or will have to have dynamic responses from smaller generations or loads located in the distribution sector It will require a significant amount of capacity installed to satisfy the need for power with large amounts of curtailment. Nowadays most of the Low Voltage (LV) and even Medium Voltage (MV) distribution grid is not being metered smartly; they are oversized to the parameters, which normally are not reached in peak of demand (since frequently peaks for demands are not reached in the same time) It will not be the case in the example for photovoltaic (PV) located in small area (connected to the same distribution line) and that is why currently the congestions mostly do not happen in the distribution network.
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