Odborna a VaV cinnost

Odborne zamereni
  •   distribuce elektricke energie
  •   kvalita elektricke energie
  •   provoz a rizeni distribucni soustavy
  •   navrh a planovani distribucnich siti
  •   provoz distribuovanych zdroju

Vyznamne publikace

Portfolio odbornych studii


Vyhodnoceni dlouhodobeho monitorovani napetovych jevu v distribucni soustave (2010 - 2020)
  • analyza historickych dat dlouhodobeho monitorovani napetovych jevu, pocet a rozdeleni sledovanych udalosti na vsech napetovych urovnich (110 kV, VN a NN) behem monitorovaciho obdobi
  • detailni analyza vybranych mereni s extremnim vyskytem udalosti co do jejich poctu ci delky trvani ci extremnim narustem zaznamenanych udalosti oproti predchozimu obdobi

Vyhodnoceni toku cinneho a jaloveho vykonu v siti E.ON Distribuce, a.s. (2017)
  •   doplneni hodnoceni provedeneho pracovniky E.Onu v siti 110 kV
  •   nove vyhodnoceni pomeru v uzlove oblasti 22 kV
  •   doplneni vyhodnoceni pomeru v dalsich cca 200 distribucnich trafostanicich vn/nn

Hodnoceni provozu vetrnych a fotovoltaickych elektraren pripojovanych do distribucni site VN (2016 - 2017)
  •   vyhodnoceni vyskytu odchylek napeti, toku cinneho a jaloveho vykonu, a uciniku elektraren

Posouzeni bezpecneho spinani vyvodu napajenych rozdilnymi transformovnami 110/22 kV (2014 - 2015)
  • odhad vyrovnavacich proudu po sepnuti ruznych uzlovych oblasti 22 kV, zavislost vyrovnavaciho proudu na fazovem posunu napeti mezi napajecimi body, porovnani s vysledky experimentalniho mereni vyrovnavacich proudu
  • stanoveni velikosti pruchoziho proudu a jeho uciniku podel propojenych vyvodu 22 kV pri ruznem zatizeni vyvodu, vykonu zdroju pripojenych ve vyvodech a rozdilovem uhlu napeti v napajecich trafostanicich
  • posouzeni bezpecneho rozepnuti propojenych vyvodu spinacim prvkem umistenym v urcitem useku na propojenych vyvodech

Automatizace VN siti v konceptu Smart Grid (2011)
  •  trendy v distribucni automatizaci, prinosy zavadeni prvku distribucni automatizace
  •  zmapovani trhu s automatizovanymi prvky a metod pro urceni optimalniho nasazeni prvku distribucni automatizace, vysledky nekterych zahranicnich studii
  •  pripadova studie dopadu nasazeni automatizovanych prvku na ukazatele nepretrzitosti dodavky pro vybrany vyvod venkovni site VN a porovnat prinos a navratnost jednotlivych navrzenych variant (vyvod Kasejovice).

Ucast v projektech


CrossEnergy - Cross border energy infrastructure - future design for a changing region

Program preshranicni spoluprace Ceska republika - Svobodny stat Bavorsko Cil EUS 2014-2020.
01/2017 - 12/2019  - clen resitelskeho tymu

Vyzkum a vyvoj metod a nastroju pro podporu rozhodovani v procesu bezpecne integrace elektraren vyuzivajicich obnovitelnych zdroju energie (BIOZE) do elektrizacni soustavy CR
Projekt  TA01020865 (TACR - Technologicka agentura Ceske republiky)
2011-2015 - clen resitelskeho tymu

Software pro predikci cetnosti kratkodobych poklesu napeti v distribucni soustave
Projekt GP102/03/P091 (GACR - Grantova agentura Ceske republiky)
2003-2005 - hlavni resitel

Analyza a simulace nespecifickych poruch v elektrickych sitich a predikcni rizeni dodavek elektricke energie
Projekt GA102/02/0949 (GACR - Grantova agentura Ceske republiky)
2002-2004 - clen resitelskeho tymu

Progresivni technologie a systemy pro energetiku
Vyzkumne centrum MSMT (Ministerstva skolstvi, mladeze a telovychovy), projekt 1M06059
2006-2011 - clen resitelskeho tymu

Vykonove a ridici systemy elektromechanickych premen energie
Dilci ukol: Optimalizace a rizeni toku energii
projekt MSM 232200008 (Ministerstvo skolstvi, mladeze a telovychovy)
1999-2004 - clen resitelskeho tymu


Reasearch activities

Specializations
  •   electricity distribution systems
  •   power quality
  •   distribution system operation and regualtion
  •   distribution grid design
  •   distribution generation operation

Most important publications

Portfolio of studies and analysis

Evaluation of long-term voltage event monitoring in distribution system (2010-2020)
- evaluation of the number and severity of voltage dips and swells in all voltage levels (110 kV, MV and LV)
- detailed analysis of selected measurements with extreme occurrence of dips or swells, identification of causes - time aggregation of measured voltage events

Evaluation of active and reactive power flows in the E.ON Distribuce distribution system (2017)
- evaluation of power flows and reverse flow in 110 kV system, 22 kV system (two supply 110/22 kV transformers, and MV feeders), in 260 MV/LV distribution substations

Impact of wind power plant operation on MV distribution grids (2016)
Impact of photovoltaic power plant operation on MV distribution grids (2017)
 - evaluation of voltage variation a flicker in delivery points
 - evaluation of active and reactive power flows and their distribution

Study of interconnected MV feeders fed from different 110 kV/MV substations (2014- 2015)
- simulation of power flow along the interconnected feeders, comparison with field measurement
- impact of the difference between the voltage phasors at interconnected substations, feeder loading and distributed generation on power profile of interconnected feeders
- evaluation of interrupting capability of sectionalizing switches allocated along feeders
- assessment of feeder section with potential switching problems

Distribution automation in MV overhead networks (2011)
- review of DA trends, methods for optimal sectionalizing switches allocation and results of published studies
- review of DA market (reclosers, sectionalizing switches, fault indicators)
- case study - sectionalizing switches allocation along a MV overhead feeder and impact on SAIDI and SAIFI, economic evaluation

Research projects

CrossEnergy - Cross border energy infrastructure - future design for a changing region
01/2017 - 12/2019 - member of research team

Project of Czech Technology Agency (TACR) no. TA01020865 - Research and development of tools for safety integration of renewable energy souces into czecch power system
01/2011 - 12/2015 - member of research team

Project of Czech Grant Agency (GACR) no. 102/03/P091 - Software for prediction of voltage dips in distribution system
2003-2005 - head of the project

Project of Czech Grant Agency (GACR) no. 102/02/0949 - Analysis and simulation of special fault states in electrical distribution networks and prediction control of power supply
2002-2004 - member of research team
 
Research centre PTSE - Progressive technologies and systems for power industry, project 1M06059, 2006-2007 - member of research team

Research project MSM 23 22 00008, sub-project - Optimisation a control of power flow
1999-2002 - member of research team