izpis_h1_title_alt

Ukrepi za izboljšanje stabilnosti EES ob prisotnosti baterijskih hranilnikov električne energije
LASNIK, JERNEJ (Author), Rudež, Urban (Mentor) More about this mentor... This link opens in a new window

.pdfPDF - Presentation file, Download (6,71 MB)

Abstract
Vzdrževanje frekvence v ozkih tolerancah okoli nazivne je eden izmed ključnih pogojev za stabilno obratovanje elektroenergetskih sistemov. V magistrskem delu je opisana problematika zagotavljanja visoke ravni frekvenčne stabilnosti pri višjih deležih pretvorniško-priključene proizvodnje. Za zagotavljanje stabilnega obratovanja elektroenergetskih sistemov prihodnosti bodo potrebni dodatni ukrepi, eden izmed njih je uporaba baterijskih hranilnikov energije. Z dinamičnimi simulacijami je prikazan vpliv hitrega odziva baterijskih hranilnikov energije (Li-ion tehnologija) na frekvenčni odziv dveh otočnih sistemov v slovenskem elektroenergetskem sistemu. Za regulacijo delovne moči baterijskega sistema je bil uporabljen princip po statiki. Rezultati simulacij potrjujejo pozitiven vpliv na frekvenčno stabilnost že pri relativno visokih nastavitvah statike. Še posebej to velja za manjša omrežja, v katerih je frekvenca v splošnem manj stabilna. Ker je v nekaterih primerih prišlo do nihanja obratujočih generatorjev, je bila za določitev vpliva baterijskega sistema na oscilatorno stabilnost na istih otočnih sistemih izvedena modalna analiza v frekvenčnem prostoru. Ta ni pokazala bistvenega negativnega učinka, tako v primeru uporabe principa po statiki kot tudi sintetične inercije. Ker so v simulacijah uporabljene določene predpostavke, so kljub pozitivnim rezultatom za njihovo potrditev potrebne nadaljnje analize in testi v praksi.

Language:Slovenian
Keywords:frekvenčna stabilnost, oscilatorna stabilnost, baterijski hranilnik električne energije, regulacija s statiko, sintetična inercija
Work type:Master's thesis/paper (mb22)
Organization:FE - Faculty of Electrical Engineering
Year:2020
Views:92
Downloads:36
Metadata:XML RDF-CHPDL DC-XML DC-RDF
 
Average score:(0 votes)
Your score:Voting is allowed only to logged in users.
:
Share:AddThis
AddThis uses cookies that require your consent. Edit consent...

Secondary language

Language:English
Title:Improving power-system stability by battery energy storage
Abstract:
Maintaining frequency levels within narrow tolerances around the nominal value is one of the key conditions for stable power grid operation. This document describes the problem of ensuring a high level of frequency stability in power systems with high penetration of power electronic interfaced power sources. Additional measures will be needed to ensure stable power grid operation in the future, one of which is the use of battery energy storage systems. Dynamic simulations are used to present the influence of battery energy storage system (Li-ion technology) fast responses to the frequency response of two islanded systems in the Slovenian power grid. Droop-based control was used for regulating the battery active power output. Simulation results show a positive influence on frequency stability even at relatively high droop settings. This is especially true for smaller networks where frequency is generally less stable. Since generator oscillations were triggered in some cases, the influence of battery energy storage system response on oscillatory stability was analysed by means of modal analysis. The latter didn't show a significant negative effect, either in the case of droop-based or synthetic-inetia-based active power control. Since certain assumptions are used in the simulations, further analyses and practical tests are needed to confirm them.

Keywords:frequency stability, oscillatory stability, battery energy storage system, droop control, synthetic inertia

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections:

Comments

Leave comment

You have to log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back