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We present and analyze distributed control schemes for frequency regulation in a smart grid. We use energy storage, conventional generators, wind generators and demand response to provide frequency support while having no communication or data sharing between them. All participants observe the system frequency and act independently in a decentralized manner to provide frequency regulation. We also...
The shift in the electricity industry from regulated monopolies to competitive markets as well as the widespread introduction of fluctuating renewable energy sources bring new challenges to power systems. Some of these challenges can be mitigated by using demand response (DR) and energy storage to provide power system services. The aim of this paper is to provide a unified framework that allows us...
Microgrid is one of new conceptual power systems for smooth installation of many distributed generations (DGs), loads and energy storage system (ESS). The microgrid can operate both in grid-connected and islanded operation mode. The balance between supply and demand of power is one of the most importance means of improving energy efficiency. This paper presents a discussion on the management and control...
Various energy storage systems have been adopted in power systems for economic and reliability reasons. In order to maintain the reliability of power systems, reserve power needs to be scheduled against possible generation unit outages. The variation of wind power outputs also requires additional reserve power in addition to the reserve for the possible generation unit outages. Superconducting Magnetic...
In this paper, a frequency control method is introduced for photovoltaic-diesel hybrid system by using a load estimator and an energy storage system. The proposed method is compared with a fuzzy based frequency control method. Simulation results show that the proposed method is feasible to reduce the frequency deviations of the isolated power utility and delivers maximum power compared to the fuzzy...
This paper describes a method to enhance the load frequency control in a power system with distributed generations (DG). In this paper, a power storage system is used with photovoltaic generation and wind power generation. The microgrid system at Aichi Institute of Technology in Japan is used as a simulation model. For each simulation, which was carried out by using a power transmission simulator,...
Under the deregulation of the electric power industry, the provision of ancillary service takes on an important role. Energy storage systems can provide ancillary service in addition to generators. However, as energy storage systems are still quite expensive, it would be helpful to estimate the potential revenue from the ancillary service. The value of ancillary service related to active power, for...
As wind turbine output is proportional to the cubic of wind speed, the wind turbine generator output fluctuates due to wind speed variations. Hence, if the power capacity of wind power generators becomes large, wind power generator output can have an influence on the power system frequency. Some methods for smoothing the wind generator output fluctuations using several types of energy storage systems...
This paper proposes a structure of an HILS based development system for MMS. This system is composed of RTDS and its hardware interface devices, MMS, communication emulator modules. The RTDS is operated for real-time simulation for both microgrid and microsource models. By using this HILS system, the secondary regulation action of MMS during an islanded operation is evaluated. The secondary regulation...
Due to the recent expansion of renewable energy applications, wind energy conversion is receiving much interest all over the world. However, output fluctuations of wind generators cause network frequency variations in power systems. This can decrease the power quality and then cause a restriction of wind farm installation, especially in an isolated power system, for example, power system in a small...
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