{"id":6853,"date":"2021-12-16T20:30:58","date_gmt":"2021-12-16T19:30:58","guid":{"rendered":"https:\/\/onload.reinhausen.com\/de\/?p=6848"},"modified":"2023-06-02T08:35:03","modified_gmt":"2023-06-02T06:35:03","slug":"semiconductors-in-the-grid","status":"publish","type":"post","link":"https:\/\/onload.reinhausen.com\/en\/12-2021\/semiconductors-in-the-grid\/","title":{"rendered":"Semiconductors in the grid"},"content":{"rendered":"\n
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A<\/span>t first glance, the dis\u00adtrict of Nieder\u00adbobritzsch, Ger\u00admany is a com\u00admu\u00adni\u00adty like thou\u00adsands of oth\u00aders: a church, farms, busi\u00adness\u00ades, a small fac\u00adto\u00adry, a few super\u00admar\u00adkets and about 800 house\u00adholds. If you look close\u00adly, how\u00adev\u00ader, you will also find a gray con\u00adtain\u00ader. This is the vis\u00adi\u00adble sign that the future is being writ\u00adten in Nieder\u00adbobritzsch, near the Sax\u00adon city of Freiberg, where elec\u00adtricity sup\u00adpli\u00ader MITNETZ STROM and Rein\u00adhausen, togeth\u00ader with two uni\u00adver\u00adsi\u00adties, are research\u00ading how to suc\u00adcess\u00adful\u00adly imple\u00adment the ener\u00adgy rev\u00ado\u00adlu\u00adtion.
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\u201cThe ener\u00adgy rev\u00ado\u00adlu\u00adtion is tak\u00ading place pri\u00admar\u00adi\u00adly in dis\u00adtri\u00adb\u00adu\u00adtion grids. That is why we need research.\u201dJens Schwedler, Project Man\u00adag\u00ader at MITNETZ STROM<\/cite><\/p>\n<\/blockquote>\n\n\n\n

To man\u00adage this, tremen\u00addous quan\u00adti\u00adties of addi\u00adtion\u00adal elec\u00adtri\u00adcal ener\u00adgy will have to be trans\u00adport\u00aded through grids in the future. In par\u00adtic\u00adu\u00adlar, the decar\u00adboniza\u00adtion of the heat\u00ading and trans\u00adporta\u00adtion sec\u00adtors will strain the grids in the years and decades to come (see ONLOAD 07). Grid oper\u00ada\u00adtors are look\u00ading for new solu\u00adtions to expand the grids. At Rein\u00adhausen, Stephan Rupp and Dirk W\u00fcsten\u00adberg are work\u00ading intense\u00adly on the top\u00adic. \u201cWe\u2019re look\u00ading for new answers to the ques\u00adtion of how grids will be able to absorb the grow\u00ading amounts of ener\u00adgy and how, at the same time, to close the gap between gen\u00ader\u00ada\u00adtion and demand that results from the increas\u00ading volatil\u00adi\u00adty,\u201d says Busi\u00adness Devel\u00adop\u00ader Rupp.<\/p>\n\n\n\n

Smart distribution grids<\/h2>\n\n\n\n

Over the course of the ener\u00adgy rev\u00ado\u00adlu\u00adtion, solar elec\u00adtric\u00adi\u00adty will have to be great\u00adly expand\u00aded in the future. A major\u00adi\u00adty of sys\u00adtems can be found on roofs and facades, mean\u00ading that they are in local grids. Direct\u00ading this solar cur\u00adrent through dis\u00adtri\u00adb\u00adu\u00adtion grids to trans\u00adporta\u00adtion grids is not a use\u00adful solu\u00adtion. The grid expan\u00adsion would be extreme\u00adly cost\u00adly and it would be hard to find cus\u00adtomers for the over\u00adsup\u00adply of solar cur\u00adrent around noon\u00adtime. By the same token, in the evening hours, large quan\u00adti\u00adties of elec\u00adtric\u00adi\u00adty must be drawn from the grid as the demand grows on the con\u00adsumer side due to charg\u00ading sta\u00adtions for elec\u00adtric vehi\u00adcles and elec\u00adtri\u00adcal\u00adly pow\u00adered heat pumps.<\/p>\n\n\n\n

Do you know what to do with excess solar cur\u00adrent in dis\u00adtri\u00adb\u00adu\u00adtion grids? Grid-form\u00ading stor\u00adage units are solv\u00ading one of the most urgent prob\u00adlems of the ener\u00adgy rev\u00ado\u00adlu\u00adtion. (\u00a9360 Grad Team)<\/figcaption><\/figure>\n\n\n\n

The solu\u00adtion might be to make the dis\u00adtri\u00adb\u00adu\u00adtion grids more flex\u00adi\u00adble, which means the option to store solar cur\u00adrent near the source, i.e. in local grids. Anoth\u00ader option for ensur\u00ading flex\u00adi\u00adbil\u00adi\u00adty is to adjust the demand for elec\u00adtric\u00adi\u00adty to the sup\u00adply with the help of intel\u00adli\u00adgent load con\u00adtrol. And solu\u00adtions that also offer autonomous oper\u00ada\u00adtion of dis\u00adtri\u00adb\u00adu\u00adtion grids in the event of a mal\u00adfunc\u00adtion would be able to increase the sup\u00adply reli\u00ada\u00adbil\u00adi\u00adty.<\/p>\n\n\n\n

\"m4w-zoom-img\"<\/figure>\n\n\n\n

Jens Schwedler, who works as a project man\u00adag\u00ader on the local grids of the future at dis\u00adtri\u00adb\u00adu\u00adtion grid oper\u00ada\u00adtor MITNETZ STROM in cen\u00adtral Ger\u00admany, says, \u201cAround 55,000 sys\u00adtems for renew\u00adable ener\u00adgy are con\u00adnect\u00aded to our dis\u00adtri\u00adb\u00adu\u00adtion grids.\u201d There\u00adfore, for Schwedler, it is obvi\u00adous: \u201cIn addi\u00adtion to off\u00adshore appli\u00adca\u00adtions, the ener\u00adgy rev\u00ado\u00adlu\u00adtion is tak\u00ading place pri\u00admar\u00adi\u00adly in dis\u00adtri\u00adb\u00adu\u00adtion grids. In order to main\u00adtain the pow\u00ader qual\u00adi\u00adty in the future with the increas\u00ading volatil\u00adi\u00adty of sup\u00adply and demand, there is an urgent need for action and research today!\u201d<\/p>\n\n\n

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Clever control<\/h5>\n

Intel\u00adli\u00adgent con\u00adtrol bal\u00adances the sup\u00adply and demand. If more elec\u00adtric\u00adi\u00adty is gen\u00ader\u00adat\u00aded in the dis\u00adtri\u00adb\u00adu\u00adtion grid than is need\u00aded, the sur\u00adplus is stored, heat pumps are start\u00aded up, and elec\u00adtric vehi\u00adcles are charged.<\/p>\n

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Reinhausen Inside
\nGRIDCON\u00ae<\/sup> Power Conversion System<\/h5>\n

Rein\u00adhausen imple\u00adments its ener\u00adgy stor\u00adage solu\u00adtions with this mod\u00adu\u00adlar inverter\/converter sys\u00adtem for DC and AC sup\u00adply in the low-volt\u00adage range. The sys\u00adtem ensures the pow\u00ader qual\u00adi\u00adty and sup\u00adports a broad range of field-test\u00aded appli\u00adca\u00adtions, such as
\nthe pro\u00advi\u00adsion of a replace\u00adment grid. It can be con\u00adfig\u00adured and enhanced based on cus\u00adtomer needs.<\/p>\n<\/div>\n<\/div>\n\n\n\n

Decoupled local grids<\/h2>\n\n\n\n

For cost rea\u00adsons, ful\u00adly expand\u00ading the grids and lay\u00ading them out with new cables and new trans\u00adform\u00aders for load or gen\u00ader\u00ada\u00adtion peaks is not a viable approach. \u201cIt takes more intel\u00adli\u00adgent solu\u00adtions to get the volatil\u00adi\u00adty under con\u00adtrol than just build\u00ading up expen\u00adsive over\u00adca\u00adpac\u00adi\u00adty,\u201d says Schwedler\u2019s col\u00adleague Jan Sch\u00f6n\u00adfeld. In order to research exact\u00adly these solu\u00adtions, MITNETZ STROM began a research project two years ago. Since then, Schwedler and Sch\u00f6n\u00adfeld have worked togeth\u00ader with Mit\u00adtwei\u00adda Uni\u00adver\u00adsi\u00adty of Applied Sci\u00adences, TU Dres\u00adden and Rein\u00adhausen as tech\u00adnol\u00ado\u00adgy part\u00adners. As part of the project, spon\u00adsored by the Ger\u00adman Fed\u00ader\u00adal Min\u00adistry for Eco\u00adnom\u00adic Affairs and Ener\u00adgy, they research the advan\u00adtages of decou\u00adpling local grids.<\/p>\n\n\n\n

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\u201cIt takes more intel\u00adli\u00adgent solu\u00adtions than just build\u00ading up over\u00adca\u00adpac\u00adi\u00adty.\u201d Jan Sch\u00f6n\u00adfeld, Project mem\u00adber, MITNETZ STROM<\/cite><\/p>\n<\/blockquote>\n\n\n\n

The project has the some\u00adwhat clunky name \u201cFlex\u00adi\u00adbil\u00adisierung des Net\u00adz\u00adbe\u00adtriebs durch entkop\u00adpelte Ort\u00adsnet\u00adze\u201d (Eng\u00adlish: Flex\u00adi\u00adbi\u00adliza\u00adtion of Grid Oper\u00ada\u00adtion through Decou\u00adpled Local Grids), which is short\u00adened to \u201cFlexNet-EkO.\u201d It focus\u00ades on the tran\u00adsi\u00adtion from medi\u00adum-volt\u00adage to low-volt\u00adage grids. In order to test this future solu\u00adtion in a field test, MITNETZ STROM chose the com\u00admu\u00adni\u00adty of Nieder\u00adbobritzsch. It is like thou\u00adsands of oth\u00aders in Ger\u00admany and else\u00adwhere in the world. There is also an increas\u00ading num\u00adber of solar pan\u00adels on roofs here. Par\u00adtic\u00adu\u00adlar\u00adly in the sum\u00admer, the momen\u00adtary pro\u00adduc\u00adtion pow\u00ader exceeds ener\u00adgy con\u00adsump\u00adtion. \u201cHere, we have the phe\u00adnom\u00ade\u00adnon of load flow rever\u00adsal, and the remain\u00ading renew\u00adable ener\u00adgy does not appear when the res\u00adi\u00addents actu\u00adal\u00adly need the elec\u00adtric\u00adi\u00adty,\u201d says Sch\u00f6n\u00adfeld.<\/p>\n\n\n

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FlexNet-Eko<\/h5>\n
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Mak\u00ading grid oper\u00ada\u00adtion more flex\u00adi\u00adble through decou\u00adpled local grids<\/strong><\/p>\n


\nOne of the cur\u00adrent big ques\u00adtions is how to best coor\u00addi\u00adnate flex\u00adi\u00adble con\u00adsumers and gen\u00ader\u00ada\u00adtors in a local grid, while at the same time ensur\u00ading opti\u00admal pow\u00ader qual\u00adi\u00adty, reliev\u00ading the bur\u00adden on exist\u00ading equip\u00adment and guar\u00adan\u00adtee\u00ading or even increas\u00ading the secu\u00adri\u00adty of sup\u00adply.<\/p>\n

It is exact\u00adly this ques\u00adtion that MITNETZ STROM, Mit\u00adtwei\u00adda Uni\u00adver\u00adsi\u00adty of Applied Sci\u00adences, TU Dres\u00adden, and Rein\u00adhausen are tack\u00adling as part of a research project spon\u00adsored by the Ger\u00adman Fed\u00ader\u00adal Min\u00adistry for Eco\u00adnom\u00adic Affairs and Ener\u00adgy.<\/p>\n

FlexNet-EkO has the fol\u00adlow\u00ading goals:<\/strong><\/p>\n