چکیده سخنرانی:
A microgrid is defined as a group of Distributed Energy Resources (DERs) and loads that act locally as a single controllable entity and can operate in both grid-connected and islanded modes. Microgrids are considered a critical link in the evolution from vertically integrated bulk power systems to smart decentralized networks, by facilitating the integration of DERs. Entities, such as government agencies, utilities, military bases, and universities around the world are deploying microgrids, and an increasing number of these systems are expected to be developed in the next decade. In general, stability in microgrids has been treated from the perspective of conventional bulk power systems. However, the nature of the stability problem and dynamic performance of a microgrid are considerably different than those of a conventional power system due to intrinsic differences between microgrids and bulk power systems, such as size, feeder types, high share of Renewable Energy Sources (RES), converter-interfaced components, low inertia, measurement devices such as Phase-Locked Loop (PLL), unbalanced operation, etc. This seminar discusses the findings of the award-winning IEEE PES Task Force on Microgrid Stability Definitions, Analysis, and Modeling, which defines concepts and identifies relevant issues related to stability in microgrids. The seminar presents definitions and classification of microgrid stability, considering pertinent microgrid features such as voltage-frequency dependence, unbalancing, low inertia, and generation intermittency. A few examples will be also presented, highlighting some of the stability classes discussed during the seminar.
Project Coordinator of Iran Microgrid Design and Implementation in Niroo Research Institute (NRI)
چکیده سخنرانی:
Microgrid is a small-scale power grid in the low voltage level, consisting of (almost low-inertia) electronically-coupled RERs/DERs, that must be able able to solve energy issues, and enhance the flexibility locally and can operate either in grid-connected or islanded (autonomous) mode of operation. Due to the low inertia nature of distributed energy resources (DERs), stabilization of voltage and frequency and power sharing in the presence of harmonic loads are critical issues in islanded mode operation of AC microgrids. In contrast, power quality issues and adjusting the power balance of supply and demand are the main objectives in grid-connected operations. Besides, with the development of microgrids’ control systems, the concept of resiliency has become more critical. Resilience means the ability to prepare for adapting to the changing conditions, and to withstand and recover rapidly from disruption. Grid resiliency depends on many factors, but a fundamental element is being able to forecast what is going to happen in advance. Some standard indices that can assess resiliency are operation resiliently against cyber-physical attacks, natural disasters, and small and large-signal disturbances. In this talk, we discuss the main aspects of the design, control, stability and cyber-resiliency of modern AC microgrids.
چکیده سخنرانی:
Power electronics technology is in the heart of the ongoing green transition. In particular,power electronic converter systems (PELS) serve as grid interfaces to renewableenergy sources, storage systems, electric vehicles, and flexible loads.
Therefore, as fundamental building blocks, power converters will not only have amajor effect on the efficiency and reliability of future power systems but will also bein charge of ensuring their stable and secure operation. Challenges such as decreasedsystem inertia, static voltage deviations and dynamic voltage instability arisenaturally in this scenario. Moreover, a well-coordinated cooperative effort of manyPELS requires the tight coupling of power electronics with advanced computation andcommunication technologies. This will make the power-converter based system increasinglyvulnerable to cyber-attacks.
This speech will discuss in more detail some of the research challengesmentioned above and present several recent research results where artificial intelligence(AI) inspired solutions have been developed. The speech will also discuss futureresearch directions in the field of AI applied to converter-based power systems.
شروع ارسال مقالات
1399/07/05آخرین مهلت ارسال مقالات کامل
1399/08/22آخرین ارسال فایل نهایی مقاله
1399/08/30تاریخ اعلام نتایج داوری مقالات
1399/09/01آخرین مهلت ثبت نام
1399/09/06