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In recent years the penetration of renewable energy based resources has increased significantly. This development has a high impact on the network control behavior. The renewable energy sources can be used to contribute to the ancillary services for enhancing the quality of service and the resilience of the power system. In the current study, an approach of applying a reactive power management using...
Currently, Russian power sector has switched to the market model for controlling electric power industry functioning and development. Due to a need to consider numerous specific features characteristic of the market-based industry, modern criteria for designing electric networks should obviously differ from the criteria of “planned economy” approach. The paper considers new method for long-term transmission...
This paper deals with a novel way to provide dynamic frequency support to isolated power systems by a fast control of the load through the grid voltage. Following the promising results of a preliminary analysis based on dynamic simulations, a field test was carried out in the archipelago of Guadeloupe at the beginning of 2014. It confirmed that the proposed control can significantly improve the transient...
In this paper we introduce the Car as Power Plant as an integrated system that provides electricity using fuel cell vehicles in parking buildings. Using a socio-technical systems design approach, we show that to study its implementation we need to investigate its long-term development as well as the operational feasibility.
The impact of the increasing photo-voltaic generation on the primary frequency response of an isolated power system is examined. The installed PV capacity of a small power system, with a peak load of 250 MW, is increased from 70 MW to 190 MW. Then, the evolution of the primary frequency response following unit outages is studied. In this work, the simulation of one year day-ahead scheduling, followed...
This paper discusses some problems related with the current Brazilian electricity market, brings out some dilemmas that should be examined in order to implement a more market oriented approach, and proposes a new market design to overcome these issues. The proposed market design is based on the concept of energy right accounts as virtual reservoirs and aims at enhancing the flexibility to enable market...
The paper examines parallel operation of two adjacent steam power plants (SPP) under coordinated reactive power (Q) - voltage control. A coordinated reactive power-voltage controller (CQVC) performs optimal coordination of the synchronous generators' Q outputs in order to maintain the voltage at a SPP HV busbars. When the plants are equipped with CQVC, they are both trying to control the same voltage,...
Currently PV modules are positioned to receive the highest amount of incident radiation in a year. Therefore, the generation pattern is independent of the consumption and a large storage is required to compensate for the same. This paper studies the possibility of orienting the modules differently in order to match the consumption more efficiently.
Constant power factor control of a power conditioning system in a large-scale photovoltaic generation system (PV system), such as a mega-solar system, is introduced to mitigate voltage variations on a distribution line. However, it is difficult for the control to mitigate the voltage variation on a long distribution line because of the loss on the distribution line. This paper proposes an advanced...
Strategically integrating gas, electricity and heating systems through hybrid heaters could provide power system planning benefits. This research establishes the system-wide value from deployment of different hybrid heating technologies and encourages systems integration to optimize power system investments in a system with high wind penetration. In particular, the widespread deployment of hybrid...
The significant penetration of renewable energy sources (RES), like wind and solar power plants, into distribution networks has changed their operation considerably and brought new challenges for distributed system operators (DSOs). One of the main problems associated with high penetration of variable RES into distribution networks is voltage rise problem along the radial distribution feeders, with...
The increase in the size of the current eletric power systems (EPSs) has led to the development of monitoring techniques of EPSs, which includes SCADA (Supervisory Control and Data Acquisition) systems, WAMS (Wide Area Measurement System) and also, disturbance records systems. Disturbance records systems are based on oscillographic records, generated by Digital Fault Recorders (DFRs) and allows the...
Long-term simulations of electric power systems are an essential tool for power system planning and operation. As power systems are extraordinarily complex, simplifying assumption have to be made to find computational tractable model formulations. In this paper we define aggregation methods 1) for simulation time, 2) for generation units and 3) for load demand units. The performance of the aggregation...
The increasing penetration of distributed energy resources (DERs) in the distribution grid, in combination with the liberalization of the electricity markets, introduces small-scale electricity producers in a market architecture designed for large-scale power plants. This work examines a double-auction electricity market for a residential area, designed to facilitate the electricity exchange between...
This paper deals with the application of a practically oriented methodology for the phase shaping of all the PSSs in a multimachine power system. The phase shaping is carried out independently for each generating plant, but the PSS gains are determined by a coordinated tuning process considering the entire multimachine system. Results are presented for the implementation of this methodology to a 110-machine...
The paper presents a framework for alleviating line overloads and mitigating consequences of cascading events. For a network in emergency conditions due to single or multiple line overloads, graph-partitioning algorithm is developed to identify subnetworks for which the overloaded lines acts as “power gates”. The alleviation of overloaded lines, which bridge the identified subnetworks, is achieved...
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...
The present paper reports different results of a pan-European study being carried out in the frame of the European GridTech project. Specific attention is paid on the techno-economic evaluation of the application of innovative grid-impacting technologies towards RES exploitation in the future European system: three main technology categories are addressed. This paper focuses particularly on the effects...
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