Experimental testing for stability analysis of distributed energy resources components with storage devices and loads

Abstract

-The distributed energy resources (DER) contains several technologies, such as diesel engines, small wind turbines, photovoltaic inverters, etc. The control of DER components with storage devices and (controllable) loads, such as batteries, capacitors, dump loads, are central to the concept of the Micro Grids (MGs). A MG can operate interconnected to the main distribution grid or in islanded mode. This paper presents experimental tests for static and dynamic stability analysis carried out in a dedicated laboratory for research in distributed control and micro-grid with a high share of renewable energy production. Moreover to point out, on a laboratory scale, the coupling between DR and storage and to effectively compensate wind fluctuations a number of tests have been done. In order to find out the parameters of various types of DER components for dynamic simulation models a number of tests are required under different operation modes and loads. The testing reporting here includes three modes of operation: stand alone, parallel/hybrid and grid connection.

Study and Analysis of an Intelligent Microgrid Energy Management Solution with Distributed Energy Sources

“…There are three different combinations of DES operation in Off Grid mode [3,19]. Considering sufficient PV generation is available, during this time, UPS will serve all secured critical loads and BESS will be charged to serve during intermittency periods.…”

“…A microgrid is a miniature version of the bulk power system with distributed energy resources capable of serving as an independent electrical island separated from the bulk power system [2]. Microgrids employ environmentally benign energy sources like solar, wind, and fuel cells [3]. The higher the penetration of sustainable energy sources the more the socio-economic benefits will be.…”

“…The higher the penetration of sustainable energy sources the more the socio-economic benefits will be. The recent advances in control and communication technology facilitate robust and intelligent control of microgrids [3][4][5]. In emerging economies, to encourage independent sustainable energy generation, there is a strong regulatory framework which in turn will constitute the microgrid building blocks.…”

“…The proposed microgrid system comprises sources like the utility grid, a diesel generator, photovoltaic (PV) generator, and a battery energy storage system (BESS) [3,6]. The loads are classified The communication network will carry the control and feedback signals over the network.…”

Sliding Mode Controller and Lyapunov Redesign Controller to Improve Microgrid Stability: A Comparative Analysis with CPL Power Variation

“…Microgrid systems offer environment-friendly distributed generation by local renewable energy resources [1][2][3][4][5][6][7][8][9][10]. From an economic aspect, it reduces the overall cost (combining the generation, transmission, and distribution) considerably.…”